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#!/bin/bash
# This program 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.
# 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 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/>.
# This program is intended to write/copy images to any media or drive.
# This script depends on 'easybashgui'.
# The password function has extra dependency on 'zenity' & 'dialog'
# programs, which can be modified to work with other libraries too
# For title of each Window
export supertitle="FOSSEE Netbook Updates"
source easybashgui
# For global debugging(opens flood gates)
#set -x
# For local debugging
logfile=patcher.log
# Intermediate files/directories. Will be removed after each interation
testfile=robots.txt
files_in_all_commits=files_in_all_commits.txt
all_commits_one_liner_with_date=all_commits_one_liner_with_date.txt
all_commits_dates_with_file_paths=all_commits_dates_with_file_paths.txt
past_applied_commits=past_applied_commits.txt
local_updates=local_updates
unique_tags=unique_tags
[ ! -d $unique_tags ] && mkdir -p $unique_tags
# Default is no internet
INET_AVAILABLE=0
# Its good to have them together
generic_return_code='Working offline. Select Ok to continue.'
return_code_1="Unknown error occured. $generic_return_code"
return_code_3="File I/0 error. $generic_return_code"
return_code_4="Network failure. Unable to connect internet. $generic_return_code"
return_code_5="SSL verification failure. Check system date. $generic_return_code"
return_code_7="Protocol error. $generic_return_code"
return_code_8="Server error. $generic_return_code"
# =====================================================================================
# Functions in order they get called #
# =====================================================================================
function clean_up() {
echo "=========================== New iteration =========================">>$logfile
date >> $logfile
[ -f $testfile ] && rm -v $testfile>>$logfile
[ -f $files_in_all_commits ] && rm -v $files_in_all_commits>>$logfile
[ -f $all_commits_one_liner_with_date ] && rm -v $all_commits_one_liner_with_date>>$logfile
[ -f $all_commits_dates_with_file_paths ] && rm -v $all_commits_dates_with_file_paths>>$logfile
[ -f $past_applied_commits ] && rm -v $past_applied_commits>>$logfile
[ -d $local_updates ] && rm -rvf $local_updates/>>$logfile
}
# ======================================================================================
function check_internet() {
#wait_for internet
for each in {fossee.in,github.com};
do
wget $each/$testfile &> /dev/null
return_code=$?
[ $return_code -eq 0 ] && INET_AVAILABLE=1 && break
[ $return_code -eq 1 ] && alert_message $return_code_1 && break
[ $return_code -eq 3 ] && alert_message $return_code_3 && break
[ $return_code -eq 4 ] && alert_message $return_code_4 && break
[ $return_code -eq 5 ] && alert_message $return_code_5 && break
[ $return_code -eq 7 ] && alert_message $return_code_7 && break
done
[ $return_code -eq 8 ] && alert_message $return_code_8
}
# ======================================================================================
# Fetch updates if internet is available and formulate a CSV
function format_list_updates() {
# If internet available just merge the changes (won't update patches automatically)
[ $INET_AVAILABLE -eq 1 ] && git pull
# Create CSV of commits with only tags( git tags are used to group similar patches)
git log --pretty=\;\(%ar\)\;%d\;%s\;\(%h\) --no-walk --tags >\
$all_commits_one_liner_with_date
# Find out files in each commit(with tag)
for each in $(cat $all_commits_one_liner_with_date | cut -d ';' -f 5 | tr -d '(|)')
do
files_in_each_commit=$(git show --first-parent --pretty="format:" --name-only $each)
echo $files_in_each_commit | tr ' ' ',' >> $files_in_all_commits
done
# Create a file with [Not Updated] flag on the first column for all the tags, we will
# selectively change it to [Updated] based on previously applied patches(git tags)
paste -d ';' $all_commits_one_liner_with_date \
$files_in_all_commits | \
awk 'BEGIN{FS=";";OFS=";"} {$1="[Not Updated]"} 1' > \
$all_commits_dates_with_file_paths
}
# ======================================================================================
function select_updates() {
# If no new/old update available, just quit (Ignoring HEAD based tags to avoid confusion)
no_updates=$(cat $all_commits_dates_with_file_paths | sed '/HEAD/d' | wc -c)
[ $no_updates -eq 0 ] && alert_message "No available updates !!!" && exit 0
# Look for previously applied updates(git tags)
for hash in $(cat unique_tags/*);
do
line=$(grep -on $hash $all_commits_dates_with_file_paths | cut -d ':' -f 1);\
sed -i $line's/\[Not\ Updated\]/\[Updated\]/g' $all_commits_dates_with_file_paths;
done
selected_update=$(menu -w 1000 -h 550 "$(cat $all_commits_dates_with_file_paths | sed '/HEAD/d' | \
cut -d ';' -f 1,2,3,4,5| tr ';' ' ' )" 2>&1)
[ $? -eq 1 ] && exit 0
#get hash for selected_update
selected_hash=$(echo $selected_update | grep -o \([0-9a-z]*\) | tr -d '(|)')
selected_tag=$(echo $selected_update | grep -o \(tag:\ [A-Za-z0-9._-]*\) | sed 's/(tag:\ //' |sed 's/)//')
# At a time only one version from similar group of tags will be applied, for eg: AudioMic-1 and
# AudioMic-2 (tags/commits/patches) can't be applied simultaneously as they affect same file
find $unique_tags -iname $(echo $selected_tag | cut -d '-' -f 1)\* | grep '' && [ $? -eq 0 ] && \
rm $(find $unique_tags -iname $(echo $selected_tag | cut -d '-' -f 1)\*)
# This will help identifying the unique tags among group of tags(commits/patches)
echo $selected_hash > $unique_tags/$selected_tag
# This for loop creates a copy of file(s) from given tag/commit
files_in_selected_hash=$(grep $selected_hash $all_commits_dates_with_file_paths | cut -d ';' -f6)
# For more than one file in a commit
for each_file in $(echo $files_in_selected_hash|tr ',' '\n');
do
mkdir -p $local_updates/$(dirname $each_file)
git show $selected_hash:$each_file>$local_updates/$each_file
echo "$selected_hash,$selected_tag">>$logfile
done
}
# ======================================================================================
function sudo_access() {
# Clear remember password
sudo -K
# The only place 'easybashgui' fails. So adding separate functions for both tty(consoles)
# and pts(terminals). If tty not found, it returns 1, and 'zenity' is used
tty | grep tty
if [ $? -eq 1 ]; then
while true
do
password=$(zenity --title "Enter your password to continue" --password)
# zenity dialog button 'Cancel' returns 1, and 'Yes' returns 0.
# Check for zenity 'Cancel' option
[ $? -eq 1 ] && exit 0
echo $password | sudo -S echo "test">/dev/null
# If wrong password then brek
[ $? -eq 0 ] && break
done
else
while true
do
password=$(dialog --title "Password" \
--clear \
--passwordbox "Enter your password" 10 30 \
--stdout)
[ $? -eq 1 ] && exit 0
echo $password | sudo -S echo "test">/dev/null
# If wrong password then brek
[ $? -eq 0 ] && break
done
fi
}
# ======================================================================================
function apply_updates() {
question "Do you want to apply the selected update? This will affect the following file(s):\
'/$files_in_selected_hash'" 2>&1
[ $? -eq 1 ] && exit 0
for each_file in $(echo $files_in_selected_hash | tr ',' '\n');
do
echo "##### applying updates #####">>$logfile
mv -v $local_updates/$each_file /$each_file>>$logfile
done
question "Update done. Select 'Yes' to revisit update selection menu.
Select 'Cancel' to 'Quit' this program"
[ $? -eq 1 ] && exit 0
call_functions
}
# ======================================================================================
function call_functions() {
#Function calls
clean_up
check_internet
format_list_updates
select_updates
sudo_access
apply_updates
}
# ======================================================================================
# __init__
call_functions
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