exit after rsync error

This commit is contained in:
matthias@arch 2022-03-12 01:01:38 +01:00
parent 2f47b4c6af
commit b8c38d85ce

137
msynk.sh
View File

@ -1,15 +1,14 @@
#!/bin/bash
# Made by Matthias Quintern
# 02/2022
# 03/2022
# This software comes with no warranty.
# This software is licensed under the GPL3
# ABOUT
# Synchronizes files from a sender to a receiver using rsync
# The files can be encrypted before or decrypted after the transfer using the mkrypt script
#
# SETTINGS
#
# The directory that is searched for config files
CONFIG_DIR=~/.config/msynk/
# When using encrypt/decrypt, the source is en/decrypted to TMP_DIR and then rsynced to receiver from there
@ -22,7 +21,7 @@ mkrypt=/usr/bin/mkrypt
# Additional flags for mkrypt
mkrypt_flags=
rsync_flags=(-ruvh)
rsync_flags=(-ruh)
# rsync_flags+=(--rsh="ssh -p 69")
# r - relative
# v - verbose
@ -33,15 +32,15 @@ rsync_flags=(-ruvh)
# see "man rsync" for more
#
# UTILITY
#
FMT_MESSAGE="\e[1;34m%s\e[0m\n"
FMT_ERROR="\e[1;31mERROR: \e[0m%s\n"
FMT_SYNC="\e[1;32m:Syncing\e[0m %s\n"
# FMT_UPDATE="\e[1;33mUpdating:\e[0m %s\n"
FMT_SYNC="\e[1;32mSyncing: \e[0m%s\n"
FMT_CONFIG="\e[34m%s\e:\t\e[1;33m%s\e[0m\n"
FMT_CMD="\e[1;33mRunning: \e[0m%s\n"
# FUNCTIONS
# silence commands
quiet() { "$@" > /dev/null 2>&1; }
# check if a passed parameter is contained in file
@ -59,9 +58,7 @@ check_path_in_args()
}
#
# sync sender to receiver
#
# SYNC SENDER TO RECEIVER
sync_sender_to_receiver()
{
# perform a dry run to see which files would be deleted
@ -97,7 +94,7 @@ sync_sender_to_receiver()
dest=$receiver$(basename $path)
elif [[ -f $path ]]; then
dest=$receiver
elif [[ $sender == *@*:* ]]; then # if sender is remote, assume the path is a dir if it has a slash and a file otherwise
elif [[ $sender == *:* ]]; then # if sender is remote, assume the path is a dir if it has a slash and a file otherwise
[[ $path == *"/" ]] && dest=$receiver$(basename $path) || dest=$receiver
else
printf "$FMT_ERROR" "Invalid path: $path"; exit 1
@ -108,57 +105,67 @@ sync_sender_to_receiver()
if [[ -n $encrypt ]]; then
[[ -f $path ]] && tmp_source=$TMP_DIR$(basename $path).gpg
[[ $v -ge 3 ]] && printf "$FMT_CMD" "bash $mkrypt --encrypt $path --output $TMP_DIR $mkrypt_flags"
bash $mkrypt --encrypt $path --output $TMP_DIR $mkrypt_flags || exit 1
[[ $v -ge 3 ]] && printf "$FMT_CMD" "rsync ${rsync_flags[@]} $tmp_source $dest"
rsync "${rsync_flags[@]}" $tmp_source $dest
bash $mkrypt --encrypt $path --output $TMP_DIR $mkrypt_flags || exit 3
[[ $v -ge 3 ]] && printf "$FMT_CMD" "rsync ${rsync_flags[*]} $tmp_source $dest"
rsync ${rsync_flags[*]} $tmp_source $dest || { printf "$FMT_ERROR" "rsync exited with exit code $?"; exit 2; }
else
[[ -f $path ]] && tmp_source=$TMP_DIR$(basename $path)
[[ $v -ge 3 ]] && printf "$FMT_CMD" "rsync ${rsync_flags[@]} $path $TMP_DIR"
rsync "${rsync_flags[@]}" $path $TMP_DIR
[[ $v -ge 3 ]] && printf "$FMT_CMD" "rsync ${rsync_flags[*]} $path $TMP_DIR"
rsync ${rsync_flags[*]} $path $TMP_DIR || { printf "$FMT_ERROR" "rsync exited with exit code $?"; exit 2; }
[[ $v -ge 3 ]] && printf "$FMT_CMD" "bash $mkrypt --decrypt $tmp_source --output $(readlink -f $dest) $mkrypt_flags"
bash $mkrypt --decrypt $tmp_source --output $(readlink -f $dest) $mkrypt_flags || exit 1
bash $mkrypt --decrypt $tmp_source --output $(readlink -f $dest) $mkrypt_flags || exit 3
fi
else
printf "$FMT_CMD" "rsync ${rsync_flags[@]} $delete $path $dest"
rsync "${rsync_flags[@]}" $delete $path $dest
[[ $v -ge 3 ]] && printf "$FMT_CMD" "rsync ${rsync_flags[*]} $delete $path $dest"
rsync ${rsync_flags[*]} $delete $path $dest || { printf "$FMT_ERROR" "rsync exited with exit code $?"; exit 2; }
fi
[[ $TMP_DIR == *msynk* ]] && {
rm -rf $TMP_DIR/* || { printf "$FMT_ERROR" "Can not delete \$TMP_DIR: $TMP_DIR"; exit 1; }
} || { printf "$FMT_ERROR" "Will not delete \$TMP_DIR because it might be dangerous (path does not contain 'msynk'): $TMP_DIR"; exit 1; }
done
# put todays date in the config
if [[ -f $CONFIG_DIR/$config ]]; then
if grep -xq "date=.*" $CONFIG_DIR$config; then
[[ $v -ge 2 ]] && printf "$FMT_MESSAGE" "Updating date in $CONFIG_DIR$config."
sed "s/date=.*/date=\"$(date)\"/" $CONFIG_DIR$config -i
else
[[ $v -ge 2 ]] && printf "$FMT_MESSAGE" "Writing current date to $CONFIG_DIR$config."
echo "date=\"$(date)\"" >> $CONFIG_DIR$config
fi
fi
[[ $v -ge 2 ]] && printf "$FMT_MESSAGE" "Running 'sync' to write cached writes to persistent storage"
sync
[[ $v -ge 1 ]] && printf "$FMT_MESSAGE" "Done!"
}
#
# HELP
#
show_help()
{
printf "\e[33mArgument Short Action:\e[0m
--help -h show this
--settings -s show current settings
--help -h Show this.
--settings -s Show current settings.
--config [name] -c use sender, receiver, paths from config file with [name]
--config [name] -c Use sender, receiver, paths from config file with [name].
--sender [path] -s sender directory, with trailing slash! Defaults to the current working directory
--receiver [path] -r receiver directory, with trailing slash!
--reverse swap receiver and sender
--sender [path] -s Sender directory, with trailing slash! Defaults to the current working directory.
--receiver [path] -r Receiver directory, with trailing slash!.
--reverse Swap receiver and sender.
--encrypt encrypt files before syncing
--decrypt decrypt files before syncing
--mkrypt-flags [flags] additional flags for mkrypt
--encrypt Encrypt files before syncing.
--decrypt Decrypt files before syncing.
--date Only process files that have been modified since the program was last run. Needs -c and (--encrypt/--decrypt).
--mkrypt-flags [flags] Additional flags for mkrypt.
--delete -d delete files that exist on receiver, but not on sender
--skip-dryrun delete without asking first
--rsync-flags [flags] additional flags for rsync
--delete -d Delete files that exist on receiver, but not on sender. Does not work with --encrypt/--decrypt.
--skip-dryrun Delete without asking first.
--rsync-flags [flags] Additional flags for rsync.
--verbose -v increase verbosity
--silent decrease verbosity
--debug maximum verbosity
--verbose -v Increase verbosity.
--silent Decrease verbosity.
--debug Maximum verbosity.
Positional arguments are:
- if using a config: a string that must be in the configs paths: eg. 'foo' will include ~/foo but nor ~/bar
@ -169,27 +176,26 @@ See the manpage for more information.
}
# SETTINGS
show_settings()
{
printf "\e[1mThe current settings are:\e[0m\n"
printf "$FMT_CONFIG" "\$TMP_DIR " "$TMP_DIR"
printf "$FMT_CONFIG" "\$TMP_FILE " "$TMP_FILE"
printf "$FMT_CONFIG" "\$CONFIG_DIR " "$CONFIG_DIR"
[[ -f $mkrypt ]] || mkrypt_installed="(file not found)"
printf "$FMT_CONFIG" "\$mkrypt " "$mkrypt $mkrypt_installed"
printf "$FMT_CONFIG" "\$rsync_flags " "${rsync_flags[*]}"
}
#
# PARSE ARGS
#
if [ -z $1 ]; then
show_help
exit 0
fi
all=0
BACKUP=1 # use if the script gets more functions later
# all command line args with no "-" are interpreted as part of filepaths.
all=1
paths_2=()
while (( "$#" )); do
case "$1" in
@ -219,9 +225,11 @@ while (( "$#" )); do
shift ;;
--encrypt)
encrypt=1
use_encryption=1
shift ;;
--decrypt)
decrypt=1
use_encryption=1
shift;;
-d|--delete)
delete=--delete
@ -234,6 +242,9 @@ while (( "$#" )); do
rsync_flags+=("${2}")
shift 2
else printf "$FMT_ERROR" "Missing argument for $1"; exit 1; fi ;;
--date)
use_date=1
shift ;;
--msynk-flags)
if [[ -n ${2} ]]; then # && "${2:0:1}" != "-" ]]; then # possibly problematic if $2 is an msynk flag
mkrypt_flags+=("${2}")
@ -263,14 +274,23 @@ while (( "$#" )); do
esac
done
# PREPARATION & CHECKS
# check if rsync is installed
if ! command -v rsync &> /dev/null; then
printf "$FMT_ERROR" "rsync is not installed."
exit 1
fi
# if using encryption, check if mkrypt is installed
[[ $use_encryption = 1 && ! -f $mkrypt ]] && printf "$FMT_ERROR" "Can not use encryption: mkrypt is not installed at given path: $mkrypt."
# if using a config
if [[ -n $config ]]; then
bash $CONFIG_DIR/$config || { printf "$FMT_ERROR" "Error running the config file: $CONFIG_DIR/$config"; exit 1; }
source $CONFIG_DIR$config || { printf "$FMT_ERROR" "Error running the config file: $CONFIG_DIR/$config"; exit 1; }
if [[ $use_encryption = 1 ]]; then
[[ -z $reverse ]] && encrypt=1 || decrypt=1
fi
[[ $v -ge 3 ]] && printf "$FMT_MESSAGE" "Loaded config: $CONFIG_DIR$config:: date:$date sender:$sender receiver:$receiver use_encryption:$use_encryption encrypt:$encrypt decrypt:$decrypt paths:${paths[*]}"
fi
# overwrite stuff from the config if anything else was given / set variables of no config was given
@ -288,23 +308,19 @@ if [[ -n $reverse ]]; then
receiver=$tmp_sender
fi
# make sure sender is absolute with slash
wd=$PWD
# quiet cd $sender && sender="$PWD/" || { printf "$FMT_ERROR" "Sender directory does not exist: $sender"; exit 1; }
# make sure reveiver is absolute
# cd $wd
# mkdir -p $receiver || { printf "$FMT_ERROR" "Can not create config dir: $receiver"; exit 1; }
# quiet cd $receiver && receiver="$PWD/" || { printf "$FMT_ERROR" "Receiver directory does not exist: $receiver"; exit 1; }
# make sure receiver has trailing slash
[[ $receiver != *"/" ]] && receiver=$receiver"/"
# create receiver dir if its local
[[ ! $receiver == *:* ]] && { mkdir -p $receiver || { printf "$FMT_ERROR" "Can not create receiver directory: $receiver"; exit 1; }}
echo "sender:$sender rec:$receiver paths=$paths paths2=$paths_2"
[[ $v -ge 3 ]] && printf "$FMT_MESSAGE" "sender:$sender receiver:$receiver paths:$paths paths_2:$paths_2"
# filter paths:
# - if using config: all paths from config that have a pos.arg in them
# - else: pos.args, must be relative to specified --sender
filtered_paths=()
if [[ -n $config ]]; then
[[ $sender != *"/" ]] && sender=$sender"/"
for path in ${paths[@]}; do
if check_path_in_args; then
filtered_paths+=($sender$path)
@ -312,20 +328,23 @@ if [[ -n $config ]]; then
done
else
for path in ${paths_2[@]}; do # add slash if directory
# quiet cd $sender
[[ -d $path ]] && [[ $path != *"/" ]] && path=$path"/"
# quiet cd $sender && quiet cd $path && filtered_paths+=($PWD/) || {
# quiet cd $sender && ls -d $path && filtered_paths+=($PWD/$path)
# }
filtered_paths+=($sender$path)
done
fi
cd $wd
echo "FPaths: ${filtered_paths[@]}"
[[ $v -ge 3 ]] && printf "$FMT_MESSAGE" "Filtered paths: ${filtered_paths[@]}"
# sanity checks
[[ -z $filtered_paths ]] && { printf "$FMT_ERROR" "Missing valid paths."; exit 1; }
[[ -z $receiver ]] && { printf "$FMT_ERROR" "Missing receiver. Specifiy with --receiver"; exit 1; }
# if using --date
if [[ -n $use_date && -z $date ]]; then # if --date but date is not set, use 0 (unix time)
[[ $v -ge 1 ]] && printf "$FMT_MESSAGE" "--date passed but date not set in config, using 0 (unix time)"
date=$(date -d @0)
fi
[[ -n $use_date ]] && mkrypt_flags+=("--date \"${date}\"")
# RUN!
sync_sender_to_receiver
exit 0