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obackup/dev/ofunctions.sh

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FUNC_BUILD=2015111601
## BEGIN Generic functions for osync & obackup written in 2013-2015 by Orsiris de Jong - http://www.netpower.fr - ozy@netpower.fr
## type -p does not work on platforms other than linux (bash). If if does not work, always assume output is not a zero exitcode
if ! type "$BASH" > /dev/null; then
echo "Please run this script only with bash shell. Tested on bash >= 3.2"
exit 127
fi
# Environment variables
_DRYRUN=0
_SILENT=0
# Initial error status, logging 'WARN', 'ERROR' or 'CRITICAL' will enable alerts flags
ERROR_ALERT=0
WARN_ALERT=0
## allow function call checks #__WITH_PARANOIA_DEBUG
if [ "$_PARANOIA_DEBUG" == "yes" ];then #__WITH_PARANOIA_DEBUG
_DEBUG=yes #__WITH_PARANOIA_DEBUG
fi #__WITH_PARANOIA_DEBUG
## allow debugging from command line with _DEBUG=yes
if [ ! "$_DEBUG" == "yes" ]; then
_DEBUG=no
SLEEP_TIME=.1
_VERBOSE=0
else
SLEEP_TIME=1
trap 'TrapError ${LINENO} $?' ERR
_VERBOSE=1
fi
SCRIPT_PID=$$
LOCAL_USER=$(whoami)
LOCAL_HOST=$(hostname)
## Default log file until config file is loaded
if [ -w /var/log ]; then
LOG_FILE="/var/log/$PROGRAM.log"
else
LOG_FILE="./$PROGRAM.log"
fi
## Default directory where to store temporary run files
if [ -w /tmp ]; then
RUN_DIR=/tmp
elif [ -w /var/tmp ]; then
RUN_DIR=/var/tmp
else
RUN_DIR=.
fi
## Log a state message every $KEEP_LOGGING seconds. Should not be equal to soft or hard execution time so your log will not be unnecessary big.
KEEP_LOGGING=1801
## Correct output of sort command (language agnostic sorting)
export LC_ALL=C
# Standard alert mail body
MAIL_ALERT_MSG="Execution of $PROGRAM instance $INSTANCE_ID on $(date) has warnings/errors."
# Default alert attachment filename
ALERT_LOG_FILE="$RUN_DIR/$PROGRAM.last.log"
# Set error exit code if a piped command fails
set -o pipefail
set -o errtrace
function Dummy {
__CheckArguments 0 $# $FUNCNAME "$@" #__WITH_PARANOIA_DEBUG
sleep .1
}
function _Logger {
local svalue="${1}" # What to log to screen
local lvalue="${2:-$svalue}" # What to log to logfile, defaults to screen value
echo -e "$lvalue" >> "$LOG_FILE"
if [ $_SILENT -eq 0 ]; then
echo -e "$svalue"
fi
}
function Logger {
local value="${1}" # Sentence to log (in double quotes)
local level="${2}" # Log level: PARANOIA_DEBUG, DEBUG, NOTICE, WARN, ERROR, CRITIAL
# <OSYNC SPECIFIC> Special case in daemon mode we should timestamp instead of counting seconds
if [ "$sync_on_changes" == "1" ]; then
prefix="$(date) - "
else
prefix="TIME: $SECONDS - "
fi
# </OSYNC SPECIFIC>
if [ "$level" == "CRITICAL" ]; then
_Logger "$prefix\e[41m$value\e[0m" "$prefix$value"
ERROR_ALERT=1
return
elif [ "$level" == "ERROR" ]; then
_Logger "$prefix\e[91m$value\e[0m" "$prefix$value"
ERROR_ALERT=1
return
elif [ "$level" == "WARN" ]; then
_Logger "$prefix\e[93m$value\e[0m" "$prefix$value"
WARN_ALERT=1
return
elif [ "$level" == "NOTICE" ]; then
_Logger "$prefix$value"
return
elif [ "$level" == "DEBUG" ]; then
if [ "$_DEBUG" == "yes" ]; then
_Logger "$prefix$value"
return
fi
elif [ "$level" == "PARANOIA_DEBUG" ]; then #__WITH_PARANOIA_DEBUG
if [ "$_PARANOIA_DEBUG" == "yes" ]; then #__WITH_PARANOIA_DEBUG
_Logger "$prefix$value" #__WITH_PARANOIA_DEBUG
return #__WITH_PARANOIA_DEBUG
fi #__WITH_PARANOIA_DEBUG
else
_Logger "\e[41mLogger function called without proper loglevel.\e[0m"
_Logger "$prefix$value"
fi
}
# Portable child (and grandchild) kill function tester under Linux, BSD and MacOS X
function KillChilds {
local pid="${1}"
local self="${2:-false}"
if children="$(pgrep -P "$pid")"; then
for child in $children; do
KillChilds "$child" true
done
fi
# Try to kill nicely, if not, wait 30 seconds to let Trap actions happen before killing
if [ "$self" == true ]; then
kill -s SIGTERM "$pid" || (sleep 30 && kill -9 "$pid" &)
fi
}
function TrapError {
local job="$0"
local line="$1"
local code="${2:-1}"
if [ $_SILENT -eq 0 ]; then
echo -e " /!\ ERROR in ${job}: Near line ${line}, exit code ${code}"
fi
}
function Spinner {
if [ $_SILENT -eq 1 ]; then
return 0
fi
case $toggle
in
1)
echo -n " \ "
echo -ne "\r"
toggle="2"
;;
2)
echo -n " | "
echo -ne "\r"
toggle="3"
;;
3)
echo -n " / "
echo -ne "\r"
toggle="4"
;;
*)
echo -n " - "
echo -ne "\r"
toggle="1"
;;
esac
}
function SedStripQuotes {
echo $(echo $1 | sed "s/^\([\"']\)\(.*\)\1\$/\2/g")
}
function StripSingleQuotes {
local string="${1}"
string="${string/#\'/}" # Remove singlequote if it begins string
string="${string/%\'/}" # Remove singlequote if it ends string
echo "$string"
}
function StripDoubleQuotes {
local string="${1}"
string="${string/#\"/}"
string="${string/%\"/}"
echo "$string"
}
function StripQuotes {
local string="${1}"
echo "$(StripSingleQuotes $(StripDoubleQuotes $string))"
}
function EscapeSpaces {
local string="${1}" # String on which spaces will be escaped
echo "${string// /\ }"
}
function IsNumeric {
eval "local value=\"${1}\"" # Needed so variable variables can be processed
local re="^-?[0-9]+([.][0-9]+)?$"
if [[ $value =~ $re ]]; then
echo 1
else
echo 0
fi
}
function CleanUp {
__CheckArguments 0 $# $FUNCNAME "$@" #__WITH_PARANOIA_DEBUG
if [ "$_DEBUG" != "yes" ]; then
rm -f "$RUN_DIR/$PROGRAM."*".$SCRIPT_PID"
fi
}
function SendAlert {
__CheckArguments 0 $# $FUNCNAME "$@" #__WITH_PARANOIA_DEBUG
if [ "$_DEBUG" == "yes" ]; then
Logger "Debug mode, no warning email will be sent." "NOTICE"
return 0
fi
# <OSYNC SPECIFIC>
if [ "$_QUICK_SYNC" == "2" ]; then
Logger "Current task is a quicksync task. Will not send any alert." "NOTICE"
return 0
fi
# </OSYNC SPECIFIC>
eval "cat \"$LOG_FILE\" $COMPRESSION_PROGRAM > $ALERT_LOG_FILE"
MAIL_ALERT_MSG="$MAIL_ALERT_MSG"$'\n\n'$(tail -n 25 "$LOG_FILE")
if [ $ERROR_ALERT -eq 1 ]; then
subject="Error alert for $INSTANCE_ID"
elif [ $WARN_ALERT -eq 1 ]; then
subject="Warning alert for $INSTANCE_ID"
else
subject="Alert for $INSTANCE_ID"
fi
# Need better fallback if mail sending does not succeed
if type mutt > /dev/null 2>&1 ; then
echo "$MAIL_ALERT_MSG" | $(type -p mutt) -x -s "$subject" $DESTINATION_MAILS -a "$ALERT_LOG_FILE"
if [ $? != 0 ]; then
Logger "WARNING: Cannot send alert email via $(type -p mutt) !!!" "WARN"
else
Logger "Sent alert mail using mutt." "NOTICE"
return 0
fi
fi
if type mail > /dev/null 2>&1 ; then
echo "$MAIL_ALERT_MSG" | $(type -p mail) -a "$ALERT_LOG_FILE" -s "$subject" $DESTINATION_MAILS
if [ $? != 0 ]; then
Logger "WARNING: Cannot send alert email via $(type -p mail) with attachments !!!" "WARN"
echo "$MAIL_ALERT_MSG" | $(type -p mail) -s "$subject" $DESTINATION_MAILS
if [ $? != 0 ]; then
Logger "WARNING: Cannot send alert email via $(type -p mail) without attachments !!!" "WARN"
else
Logger "Sent alert mail using mail command without attachment." "NOTICE"
return 0
fi
else
Logger "Sent alert mail using mail command." "NOTICE"
return 0
fi
fi
if type sendmail > /dev/null 2>&1 ; then
echo -e "$subject\r\n$MAIL_ALERT_MSG" | $(type -p sendmail) $DESTINATION_MAILS
if [ $? != 0 ]; then
Logger "WARNING: Cannot send alert email via $(type -p sendmail) !!!" "WARN"
else
Logger "Sent alert mail using sendmail command without attachment." "NOTICE"
return 0
fi
fi
if type sendemail > /dev/null 2>&1 ; then
if [ "$SMTP_USER" != "" ] && [ "$SMTP_PASSWORD" != "" ]; then
SMTP_OPTIONS="-xu $SMTP_USER -xp $SMTP_PASSWORD"
else
SMTP_OPTIONS=""
fi
$(type -p sendemail) -f $SENDER_MAIL -t $DESTINATION_MAILS -u "$subject" -m "$MAIL_ALERT_MSG" -s $SMTP_SERVER $SMTP_OPTIONS > /dev/null 2>&1
if [ $? != 0 ]; then
Logger "WARNING: Cannot send alert email via $(type -p sendemail) !!!" "WARN"
else
Logger "Sent alert mail using sendemail command without attachment." "NOTICE"
return 0
fi
fi
# If function has not returned 0 yet, assume it's critical that no alert can be sent
Logger "/!\ CRITICAL: Cannot send alert" "ERROR" # Is not marked critical because execution must continue
# Delete tmp log file
if [ -f "$ALERT_LOG_FILE" ]; then
rm "$ALERT_LOG_FILE"
fi
}
function LoadConfigFile {
__CheckArguments 1 $# $FUNCNAME "$@" #__WITH_PARANOIA_DEBUG
local config_file="${1}"
if [ ! -f "$config_file" ]; then
Logger "Cannot load configuration file [$config_file]. Cannot start." "CRITICAL"
exit 1
elif [[ "$1" != *".conf" ]]; then
Logger "Wrong configuration file supplied [$config_file]. Cannot start." "CRITICAL"
exit 1
else
grep '^[^ ]*=[^;&]*' "$config_file" > "$RUN_DIR/$PROGRAM.$FUNCNAME.$SCRIPT_PID" # WITHOUT COMMENTS
# Shellcheck source=./sync.conf
source "$RUN_DIR/$PROGRAM.$FUNCNAME.$SCRIPT_PID"
fi
}
function GetLocalOS {
__CheckArguments 0 $# $FUNCNAME "$@" #__WITH_PARANOIA_DEBUG
local local_os_var=$(uname -spio 2>&1)
if [ $? != 0 ]; then
local local_os_var=$(uname -v 2>&1)
if [ $? != 0 ]; then
local local_os_var=($uname)
fi
fi
case $local_os_var in
*"Linux"*)
LOCAL_OS="Linux"
;;
*"BSD"*)
LOCAL_OS="BSD"
;;
*"MINGW32"*)
LOCAL_OS="msys"
;;
*"Darwin"*)
LOCAL_OS="MacOSX"
;;
*)
Logger "Running on >> $local_os_var << not supported. Please report to the author." "ERROR"
exit 1
;;
esac
Logger "Local OS: [$local_os_var]." "DEBUG"
}
function GetRemoteOS {
__CheckArguments 0 $# $FUNCNAME "$@" #__WITH_PARANOIA_DEBUG
if [ "$REMOTE_OPERATION" == "yes" ]; then
CheckConnectivity3rdPartyHosts
CheckConnectivityRemoteHost
local cmd=$SSH_CMD' "uname -spio" > "'$RUN_DIR/$PROGRAM.$FUNCNAME.$SCRIPT_PID'" 2>&1'
Logger "cmd: $cmd" "DEBUG"
eval "$cmd" &
WaitForTaskCompletion $! 120 240 $FUNCNAME"-1"
retval=$?
if [ $retval != 0 ]; then
local cmd=$SSH_CMD' "uname -v" > "'$RUN_DIR/$PROGRAM.$FUNCNAME.$SCRIPT_PID'" 2>&1'
Logger "cmd: $cmd" "DEBUG"
eval "$cmd" &
WaitForTaskCompletion $! 120 240 $FUNCNAME"-2"
retval=$?
if [ $retval != 0 ]; then
local cmd=$SSH_CMD' "uname" > "'$RUN_DIR/$PROGRAM.$FUNCNAME.$SCRIPT_PID'" 2>&1'
Logger "cmd: $cmd" "DEBUG"
eval "$cmd" &
WaitForTaskCompletion $! 120 240 $FUNCNAME"-3"
retval=$?
if [ $retval != 0 ]; then
Logger "Cannot Get remote OS type." "ERROR"
fi
fi
fi
local remote_os_var=$(cat $RUN_DIR/$PROGRAM.$FUNCNAME.$SCRIPT_PID)
case $remote_os_var in
*"Linux"*)
REMOTE_OS="Linux"
;;
*"BSD"*)
REMOTE_OS="BSD"
;;
*"MINGW32"*)
REMOTE_OS="msys"
;;
*"Darwin"*)
REMOTE_OS="MacOSX"
;;
*"ssh"*|*"SSH"*)
Logger "Cannot connect to remote system." "CRITICAL"
exit 1
;;
*)
Logger "Running on remote OS failed. Please report to the author if the OS is not supported." "CRITICAL"
Logger "Remote OS said:\n$remote_os_var" "CRITICAL"
exit 1
esac
Logger "Remote OS: [$remote_os_var]." "DEBUG"
fi
}
function WaitForTaskCompletion {
local pid="${1}" # pid to wait for
local soft_max_time="${2}" # If program with pid $pid takes longer than $soft_max_time seconds, will log a warning, unless $soft_max_time equals 0.
local hard_max_time="${3}" # If program with pid $pid takes longer than $hard_max_time seconds, will stop execution, unless $hard_max_time equals 0.
local caller_name="${4}" # Who called this function
Logger "$FUNCNAME called by [$caller_name]." "PARANOIA_DEBUG" #__WITH_PARANOIA_DEBUG
__CheckArguments 4 $# $FUNCNAME "$@" #__WITH_PARANOIA_DEBUG
local soft_alert=0 # Does a soft alert need to be triggered, if yes, send an alert once
local log_ttime=0 # local time instance for comparaison
local seconds_begin=$SECONDS # Seconds since the beginning of the script
local exec_time=0 # Seconds since the beginning of this function
while eval "$PROCESS_TEST_CMD" > /dev/null
do
Spinner
exec_time=$(($SECONDS - $seconds_begin))
if [ $((($exec_time + 1) % $KEEP_LOGGING)) -eq 0 ]; then
if [ $log_ttime -ne $exec_time ]; then
log_ttime=$exec_time
Logger "Current task still running." "NOTICE"
fi
fi
if [ $exec_time -gt $soft_max_time ]; then
if [ $soft_alert -eq 0 ] && [ $soft_max_time -ne 0 ]; then
Logger "Max soft execution time exceeded for task." "WARN"
soft_alert=1
SendAlert
fi
if [ $exec_time -gt $hard_max_time ] && [ $hard_max_time -ne 0 ]; then
Logger "Max hard execution time exceeded for task. Stopping task execution." "ERROR"
kill -s SIGTERM $pid
if [ $? == 0 ]; then
Logger "Task stopped succesfully" "NOTICE"
else
Logger "Sending SIGTERM to proces failed. Trying the hard way." "ERROR"
sleep 5 && kill -9 $pid
if [ $? != 0 ]; then
Logger "Could not stop task." "ERROR"
fi
fi
return 1
fi
fi
sleep $SLEEP_TIME
done
wait $pid
local retval=$?
Logger "$FUNCNAME ended for [$caller_name] with status $retval." "PARANOIA_DEBUG" #__WITH_PARANOIA_DEBUG
return $retval
}
function WaitForCompletion {
local pid="${1}" # pid to wait for
local soft_max_time="${2}" # If program with pid $pid takes longer than $soft_max_time seconds, will log a warning, unless $soft_max_time equals 0.
local hard_max_time="${3}" # If program with pid $pid takes longer than $hard_max_time seconds, will stop execution, unless $hard_max_time equals 0.
local caller_name="${4}" # Who called this function
Logger "$FUNCNAME called by [$caller_name]" "PARANOIA_DEBUG" #__WITH_PARANOIA_DEBUG
__CheckArguments 4 $# $FUNCNAME "$@" #__WITH_PARANOIA_DEBUG
local soft_alert=0 # Does a soft alert need to be triggered, if yes, send an alert once
local log_ttime=0 # local time instance for comparaison
local seconds_begin=$SECONDS # Seconds since the beginning of the script
local exec_time=0 # Seconds since the beginning of this function
while eval "$PROCESS_TEST_CMD" > /dev/null
do
Spinner
if [ $((($SECONDS + 1) % $KEEP_LOGGING)) -eq 0 ]; then
if [ $log_time -ne $SECONDS ]; then
log_time=$SECONDS
Logger "Current task still running." "NOTICE"
fi
fi
if [ $SECONDS -gt $soft_max_time ]; then
if [ $soft_alert -eq 0 ] && [ $soft_max_time != 0 ]; then
Logger "Max soft execution time exceeded for script." "WARN"
soft_alert=1
SendAlert
fi
if [ $SECONDS -gt $hard_max_time ] && [ $hard_max_time != 0 ]; then
Logger "Max hard execution time exceeded for script. Stopping current task execution." "ERROR"
kill -s SIGTERM $pid
if [ $? == 0 ]; then
Logger "Task stopped succesfully" "NOTICE"
else
Logger "Sending SIGTERM to proces failed. Trying the hard way." "ERROR"
kill -9 $pid
if [ $? != 0 ]; then
Logger "Could not stop task." "ERROR"
fi
fi
return 1
fi
fi
sleep $SLEEP_TIME
done
wait $pid
retval=$?
Logger "$FUNCNAME ended for [$caller_name] with status $retval." "PARANOIA_DEBUG" #__WITH_PARANOIA_DEBUG
return $retval
}
function RunLocalCommand {
local command="${1}" # Command to run
local hard_max_time="${2}" # Max time to wait for command to compleet
__CheckArguments 2 $# $FUNCNAME "$@" #__WITH_PARANOIA_DEBUG
if [ $_DRYRUN -ne 0 ]; then
Logger "Dryrun: Local command [$command] not run." "NOTICE"
return 0
fi
Logger "Running command [$command] on local host." "NOTICE"
eval "$command" > "$RUN_DIR/$PROGRAM.$FUNCNAME.$SCRIPT_PID" 2>&1 &
WaitForTaskCompletion $! 0 $hard_max_time $FUNCNAME
retval=$?
if [ $retval -eq 0 ]; then
Logger "Command succeded." "NOTICE"
else
Logger "Command failed." "ERROR"
fi
if [ $_VERBOSE -eq 1 ] || [ $retval -ne 0 ]; then
Logger "Command output:\n$(cat $RUN_DIR/$PROGRAM.$FUNCNAME.$SCRIPT_PID)" "NOTICE"
fi
if [ "$STOP_ON_CMD_ERROR" == "yes" ] && [ $retval -ne 0 ]; then
Logger "Stopping on command execution error." "CRITICAL"
exit 1
fi
}
## Runs remote command $1 and waits for completition in $2 seconds
function RunRemoteCommand {
local command="${1}" # Command to run
local hard_max_time="${2}" # Max time to wait for command to compleet
__CheckArguments 2 $# $FUNCNAME "$@" #__WITH_PARANOIA_DEBUG
CheckConnectivity3rdPartyHosts
CheckConnectivityRemoteHost
if [ $_DRYRUN -ne 0 ]; then
Logger "Dryrun: Local command [$command] not run." "NOTICE"
return 0
fi
Logger "Running command [$command] on remote host." "NOTICE"
cmd=$SSH_CMD' "$command" > "'$RUN_DIR/$PROGRAM.$FUNCNAME.$SCRIPT_PID'" 2>&1'
Logger "cmd: $cmd" "DEBUG"
eval "$cmd" &
WaitForTaskCompletion $! 0 $hard_max_time $FUNCNAME
retval=$?
if [ $retval -eq 0 ]; then
Logger "Command succeded." "NOTICE"
else
Logger "Command failed." "ERROR"
fi
if [ -f "$RUN_DIR/$PROGRAM.$FUNCNAME.$SCRIPT_PID" ] && ([ $_VERBOSE -eq 1 ] || [ $retval -ne 0 ])
then
Logger "Command output:\n$(cat $RUN_DIR/$PROGRAM.$FUNCNAME.$SCRIPT_PID)" "NOTICE"
fi
if [ "$STOP_ON_CMD_ERROR" == "yes" ] && [ $retval -ne 0 ]; then
Logger "Stopping on command execution error." "CRITICAL"
exit 1
fi
}
function RunBeforeHook {
__CheckArguments 0 $# $FUNCNAME "$@" #__WITH_PARANOIA_DEBUG
if [ "$LOCAL_RUN_BEFORE_CMD" != "" ]; then
RunLocalCommand "$LOCAL_RUN_BEFORE_CMD" $MAX_EXEC_TIME_PER_CMD_BEFORE
fi
if [ "$REMOTE_RUN_BEFORE_CMD" != "" ]; then
RunRemoteCommand "$REMOTE_RUN_BEFORE_CMD" $MAX_EXEC_TIME_PER_CMD_BEFORE
fi
}
function RunAfterHook {
__CheckArguments 0 $# $FUNCNAME "$@" #__WITH_PARANOIA_DEBUG
if [ "$LOCAL_RUN_AFTER_CMD" != "" ]; then
RunLocalCommand "$LOCAL_RUN_AFTER_CMD" $MAX_EXEC_TIME_PER_CMD_AFTER
fi
if [ "$REMOTE_RUN_AFTER_CMD" != "" ]; then
RunRemoteCommand "$REMOTE_RUN_AFTER_CMD" $MAX_EXEC_TIME_PER_CMD_AFTER
fi
}
function CheckConnectivityRemoteHost {
__CheckArguments 0 $# $FUNCNAME "$@" #__WITH_PARANOIA_DEBUG
if [ "$_PARANOIA_DEBUG" != "yes" ]; then # Do not loose time in paranoia debug
if [ "$REMOTE_HOST_PING" != "no" ] && [ "$REMOTE_OPERATION" != "no" ]; then
eval "$PING_CMD $REMOTE_HOST > /dev/null 2>&1" &
WaitForTaskCompletion $! 180 180 $FUNCNAME
if [ $? != 0 ]; then
Logger "Cannot ping $REMOTE_HOST" "CRITICAL"
return 1
fi
fi
fi
}
function CheckConnectivity3rdPartyHosts {
__CheckArguments 0 $# $FUNCNAME "$@" #__WITH_PARANOIA_DEBUG
if [ "$_PARANOIA_DEBUG" != "yes" ]; then # Do not loose time in paranoia debug
if [ "$REMOTE_3RD_PARTY_HOSTS" != "" ]; then
remote_3rd_party_success=0
OLD_IFS=$IFS
IFS=$' \t\n'
for i in $REMOTE_3RD_PARTY_HOSTS
do
eval "$PING_CMD $i > /dev/null 2>&1" &
WaitForTaskCompletion $! 360 360 $FUNCNAME
if [ $? != 0 ]; then
Logger "Cannot ping 3rd party host $i" "WARN"
else
remote_3rd_party_success=1
fi
done
IFS=$OLD_IFS
if [ $remote_3rd_party_success -ne 1 ]; then
Logger "No remote 3rd party host responded to ping. No internet ?" "CRITICAL"
return 1
fi
fi
fi
}
#__BEGIN_WITH_PARANOIA_DEBUG
function __CheckArguments {
# Checks the number of arguments of a function and raises an error if some are missing
if [ "$_DEBUG" == "yes" ]; then
local number_of_arguments="${1}" # Number of arguments the tested function should have
local number_of_given_arguments="${2}" # Number of arguments that have been passed
local function_name="${3}" # Function name that called __CheckArguments
if [ "$_PARANOIA_DEBUG" == "yes" ]; then
Logger "Entering function [$function_name]." "DEBUG"
fi
# All arguments of the function to check are passed as array in ${4} (the function call waits for $@)
# If any of the arguments contains spaces, bash things there are two aguments
# In order to avoid this, we need to iterate over ${4} and count
local iterate=4
local fetch_arguments=1
local arg_list=""
while [ $fetch_arguments -eq 1 ]; do
cmd='argument=${'$iterate'}'
eval $cmd
if [ "$argument" = "" ]; then
fetch_arguments=0
else
arg_list="$arg_list [Argument $(($iterate-3)): $argument]"
iterate=$(($iterate+1))
fi
done
local counted_arguments=$((iterate-4))
if [ $counted_arguments -ne $number_of_arguments ]; then
Logger "Function $function_name may have inconsistent number of arguments. Expected: $number_of_arguments, count: $counted_arguments, see log file." "ERROR"
Logger "Arguments passed: $arg_list" "ERROR"
fi
fi
}
function old__CheckArguments {
# Checks the number of arguments and raises an error if some are missing
if [ "$_DEBUG" == "yes" ]; then
local number_of_arguments="${1}" # Number of arguments a function should have
local number_of_given_arguments="${2}" # Number of arguments that have been passed
local function_name="${3}" # Function name that called __CheckArguments
local arguments="${4}" # All other arguments
if [ "$_PARANOIA_DEBUG" == "yes" ]; then
Logger "Entering function [$function_name]." "DEBUG"
# Paranoia check... Can help finding empty arguments. __CheckArguments should be grepped out in production builds.
local count=-3 # Number of arguments minus the function calls for __CheckArguments
for i in $@; do
count=$((count + 1))
done
if [ $count -ne $1 ]; then
Logger "Function $function_name may have inconsistent number of arguments. Expected: $number_of_arguments, count: $count, see log file." "WARN"
echo "Argument list (including checks): $*" >> "$LOG_FILE"
fi
fi
if [ $number_of_arguments -ne $number_of_given_arguments ]; then
Logger "Inconsistnent number of arguments in $function_name. Should have $number_of_arguments arguments, has $number_of_given_arguments arguments, see log file." "CRITICAL"
# Cannot user Logger here because $@ is a list of arguments
echo "Argumnt list: $4" >> "$LOG_FILE"
fi
fi
}
#__END_WITH_PARANOIA_DEBUG
function PreInit {
__CheckArguments 0 $# $FUNCNAME "$@" #__WITH_PARANOIA_DEBUG
## SSH compression
if [ "$SSH_COMPRESSION" != "no" ]; then
SSH_COMP=-C
else
SSH_COMP=
fi
## Support for older config files without RSYNC_EXECUTABLE option
if [ "$RSYNC_EXECUTABLE" == "" ]; then
RSYNC_EXECUTABLE=rsync
fi
## Sudo execution option
if [ "$SUDO_EXEC" == "yes" ]; then
if [ "$RSYNC_REMOTE_PATH" != "" ]; then
RSYNC_PATH="sudo $RSYNC_REMOTE_PATH/$RSYNC_EXECUTABLE"
else
RSYNC_PATH="sudo $RSYNC_EXECUTABLE"
fi
COMMAND_SUDO="sudo"
else
if [ "$RSYNC_REMOTE_PATH" != "" ]; then
RSYNC_PATH="$RSYNC_REMOTE_PATH/$RSYNC_EXECUTABLE"
else
RSYNC_PATH="$RSYNC_EXECUTABLE"
fi
COMMAND_SUDO=""
fi
## Set rsync default arguments
RSYNC_ARGS="-rlptgoD"
if [ "$PRESERVE_ACL" == "yes" ]; then
RSYNC_ARGS=$RSYNC_ARGS" -A"
fi
if [ "$PRESERVE_XATTR" == "yes" ]; then
RSYNC_ARGS=$RSYNC_ARGS" -X"
fi
if [ "$RSYNC_COMPRESS" == "yes" ]; then
RSYNC_ARGS=$RSYNC_ARGS" -z"
fi
if [ "$COPY_SYMLINKS" == "yes" ]; then
RSYNC_ARGS=$RSYNC_ARGS" -L"
fi
if [ "$KEEP_DIRLINKS" == "yes" ]; then
RSYNC_ARGS=$RSYNC_ARGS" -K"
fi
if [ "$PRESERVE_HARDLINKS" == "yes" ]; then
RSYNC_ARGS=$RSYNC_ARGS" -H"
fi
if [ "$CHECKSUM" == "yes" ]; then
RSYNC_ARGS=$RSYNC_ARGS" --checksum"
fi
if [ $_DRYRUN -eq 1 ]; then
RSYNC_ARGS=$RSYNC_ARGS" -n"
DRY_WARNING="/!\ DRY RUN"
fi
if [ "$BANDWIDTH" != "" ] && [ "$BANDWIDTH" != "0" ]; then
RSYNC_ARGS=$RSYNC_ARGS" --bwlimit=$BANDWIDTH"
fi
## Set compression executable and extension
COMPRESSION_LEVEL=3
if type xz > /dev/null 2>&1
then
COMPRESSION_PROGRAM="| xz -$COMPRESSION_LEVEL"
COMPRESSION_EXTENSION=.xz
elif type lzma > /dev/null 2>&1
then
COMPRESSION_PROGRAM="| lzma -$COMPRESSION_LEVEL"
COMPRESSION_EXTENSION=.lzma
elif type pigz > /dev/null 2>&1
then
COMPRESSION_PROGRAM="| pigz -$COMPRESSION_LEVEL"
COMPRESSION_EXTENSION=.gz
COMPRESSION_OPTIONS=--rsyncable
elif type gzip > /dev/null 2>&1
then
COMPRESSION_PROGRAM="| gzip -$COMPRESSION_LEVEL"
COMPRESSION_EXTENSION=.gz
COMPRESSION_OPTIONS=--rsyncable
else
COMPRESSION_PROGRAM=
COMPRESSION_EXTENSION=
fi
ALERT_LOG_FILE="$ALERT_LOG_FILE$COMPRESSION_EXTENSION"
}
function PostInit {
__CheckArguments 0 $# $FUNCNAME "$@" #__WITH_PARANOIA_DEBUG
# Define remote commands
SSH_CMD="$(type -p ssh) $SSH_COMP -i $SSH_RSA_PRIVATE_KEY $REMOTE_USER@$REMOTE_HOST -p $REMOTE_PORT"
SCP_CMD="$(type -p scp) $SSH_COMP -i $SSH_RSA_PRIVATE_KEY -P $REMOTE_PORT"
RSYNC_SSH_CMD="$(type -p ssh) $SSH_COMP -i $SSH_RSA_PRIVATE_KEY -p $REMOTE_PORT"
}
function InitLocalOSSettings {
__CheckArguments 0 $# $FUNCNAME "$@" #__WITH_PARANOIA_DEBUG
## If running under Msys, some commands do not run the same way
## Using mingw version of find instead of windows one
## Getting running processes is quite different
## Ping command is not the same
if [ "$LOCAL_OS" == "msys" ]; then
FIND_CMD=$(dirname $BASH)/find
#TODO: The following command needs to be checked on msys. Does the $1 variable substitution work ?
# PROCESS_TEST_CMD assumes there is a variable $pid
PROCESS_TEST_CMD='ps -a | awk "{\$1=\$1}\$1" | awk "{print \$1}" | grep $pid'
PING_CMD="ping -n 2"
else
FIND_CMD=find
# PROCESS_TEST_CMD assumes there is a variable $pid
PROCESS_TEST_CMD='ps -p$pid'
PING_CMD="ping -c 2 -i .2"
fi
## Stat command has different syntax on Linux and FreeBSD/MacOSX
if [ "$LOCAL_OS" == "MacOSX" ] || [ "$LOCAL_OS" == "BSD" ]; then
STAT_CMD="stat -f \"%Sm\""
else
STAT_CMD="stat --format %y"
fi
}
function InitRemoteOSSettings {
__CheckArguments 0 $# $FUNCNAME "$@" #__WITH_PARANOIA_DEBUG
## MacOSX does not use the -E parameter like Linux or BSD does (-E is mapped to extended attrs instead of preserve executability)
if [ "$LOCAL_OS" != "MacOSX" ] && [ "$REMOTE_OS" != "MacOSX" ]; then
RSYNC_ARGS=$RSYNC_ARGS" -E"
fi
if [ "$REMOTE_OS" == "msys" ]; then
REMOTE_FIND_CMD=$(dirname $BASH)/find
else
REMOTE_FIND_CMD=find
fi
}
## END Generic functions
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