Merge pull request 'v1' (#23) from v1 into master

Reviewed-on: #23

.gitignore

@@ -9,3 +9,4 @@
 
 # Build files
 target
+Cargo.lock

Cargo.toml

@@ -1,17 +1,20 @@
 [package]
 name = "cai-watchdog"
-version = "0.1.0"
+version = "0.9.0"
 authors = ["Alexander I. Chebykin <alex.chebykin@gmail.com>"]
 edition = "2018"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-file-utils = "0.1.5"
-chrono = "0.4.19"
+file-utils = "0.1"
+chrono = "0.4"
 # Sync
 #reqwest = { version = "0.11", features = ["blocking"] }
 # Async
-reqwest = "0.11"
-tokio = { version = "1", features = ["full"] }
-ini = "1.3.0"
+reqwest = "0.12"
+tokio = { version = "1.43", features = ["full"] }
+ini = "1.3"
+exitcode = "1.1"
+sysinfo = "0.33"
+sys-locale = "0.3"

README.md

@@ -1,3 +1,183 @@
 # CAI-Watchdog
 
-Watchdog for monitoring web-services
+Watchdog for monitoring web-services and running processes
+
+## Requirements
+
+### On \*nix
+- OpenSSL 1.0.1, 1.0.2, 1.1.0, or 1.1.1 with headers (see https://github.com/sfackler/rust-openssl)
+- Perl
+- Curl
+
+### On Windows
+- PowerShell
+
+## Configuration file
+
+Default configuration file location:
+
+**On \*nix:** /etc/cai-watchdog.conf
+
+**On Windows:** current directory
+
+You can specify config file as parameter: ```cai-watchdog /path/to/config/config_file.conf``` (*nix) or ```cai-watchdog.exe drive:\path\to\config\config_file.ini``` (Windows)
+
+### Configuration file parameters
+
+```
+[main]
+check_interval = Interval between checks in seconds
+rules_count = Rules count to be loaded from config. Rules sections must be enumerated continuously [rule1], [rule2] ... etc
+on_start_command = Command to be executed when watchdog started
+
+[rule1]
+service = Service name
+uri = URI to be checked
+process = process to be checked
+email = E-mail address for notifications
+command = Command to send notification
+```
+
+In commands You can use fields ```<email>```, ```<subject>```, ```<message>```, ```<service>```, ```<uri>```, ```<process>``` and ```<state>```
+
+- ```<email>``` - E-mail address for notifications
+- ```<subject>``` - E-mail subject
+- ```<message>``` - Message text
+- ```<service>``` - Service name
+- ```<uri>``` - Service URI (for web services)
+- ```<process>``` - Process name (for OS tasks)
+- ```<state>``` - Service states are ```online``` and ```offline```, process states are ```running``` and ```stopped```
+### Scripts configurations
+
+#### *nix
+
+##### send-mail
+
+**Usage:** ```send-mail recipient 'subject' 'message'```
+
+Configuration file ```/etc/cai-watchdog/email.conf```
+
+- ```Username:``` - Set e-mail user name here
+- ```Password:``` - Set e-mail password here
+- ```SMTP Server:``` - Set SMTP server address here
+- ```Port:``` - Set SMTP port here
+
+##### send-mail-[locale]
+
+**Usage:** ```send-mail-[locale] recipient 'service' 'process-or-uri' 'state'```
+
+Configuration file ```/etc/cai-watchdog/email.conf```
+
+- ```Username:``` - Set e-mail user name here
+- ```Password:``` - Set e-mail password here
+- ```SMTP Server:``` - Set SMTP server address here
+- ```Port:``` - Set SMTP port here
+
+##### send-telegram
+
+**Usage:** ```send-telegram 'message'```
+
+Configuration file ```/etc/cai-watchdog/telegram.conf```
+
+- ```Group ID:``` - Set Telegram group ID here
+- ```Bot token:``` - Set Telegram token here
+
+##### send-telegram-[locale]
+
+**Usage:** ```send-telegram-[locale] 'service', 'process-or-uri', 'state'```
+
+Configuration file ```/etc/cai-watchdog/telegram.conf```
+
+- ```Group ID:``` - Set Telegram group ID here
+- ```Bot token:``` - Set Telegram token here
+
+#### Windows
+
+##### send-mail.ps1
+
+**Usage:** ```send-mail.ps1 recipient 'subject' 'message'```
+
+Next lines needs to be configured:
+
+- ```$EmailFrom = "yourmailadress@somedomain.com"``` - Set sender e-mail address here
+- ```$SMTPServer = "smtp.somedomain.com"``` - Set SMTP-server address here
+- ```$SMTPClient.EnableSsl = $true``` - Set SSL flag here
+- ```$SMTPClient.Credentials = New-Object System.Net.NetworkCredential("usr", "pass");``` - Set user ("usr") and password ("pass") here
+
+##### send-telegram.ps1
+
+**Usage:** ```send-telegram.ps1 'message'```
+
+- ```$Telegramtoken = "Your_Telegram_Token"``` - Set Telegram token here
+- ```$Telegramchatid = "Your_Telegram_Chat_ID"``` - Set Telegram chat ID here
+
+### How to get Telegram token and chat ID
+
+1. Open ```@BotFather``` bot
+1. Run ```/newbot``` command and give name to your new bot
+1. Enter a username for the bot
+1. Take note of the API token. We will need this later. **Note:** it is case sensitive
+1. Click the link to open a chat with the newly created bot
+
+Next you need to find your Telegram Chat ID.
+
+1. From the Telegram home screen, search for ```chatid_echo_bot```. Click Chat ID Echo to open a chat
+1. Enter ```/start``` to get the bot to send you your Telegram Chat ID
+1. Take note of the Telegram Chat ID returned
+
+### Service configuration (*nix)
+
+If you want to get messages when watchdog service is stopped, uncomment following line: ```ExecStopPost=/etc/cai-watchdog/on-stop```
+
+## User logins monitoring (*nix)
+
+Watchdog can send notifications on user login. Just add to ```/etc/profile.d/sshinfo.sh``` next lines:
+
+- For Telegram:
+    ```
+    User=$(whoami)
+    IP=$(echo $SSH_CONNECTION | awk '{ print $1 == "" ? "127.0.0.1" : $1 }')
+    CAI_WATCHDOG_PATH=/etc/cai-watchdog
+    source ${CAI_WATCHDOG_PATH}/inc-icons
+    ${CAI_WATCHDOG_PATH}/send-telegram "${ICON_INFO} SSH: User ${User} is logged in from ${IP}"
+    ```
+- For e-mail:
+    ```
+    User=$(whoami)
+    IP=$(echo $SSH_CONNECTION | awk '{ print $1 == "" ? "127.0.0.1" : $1 }')
+    CAI_WATCHDOG_PATH=/etc/cai-watchdog
+    source ${CAI_WATCHDOG_PATH}/inc-icons
+    ${CAI_WATCHDOG_PATH}/send-mail your@mail.addr '${ICON_INFO} SSH: User ${User} is logged in' '${ICON_INFO} SSH: User ${User} is logged in from ${IP}'
+    ```
+
+## User logouts monitoring (*nix)
+
+1. Create file ```/etc/pam.d/pam_session.sh``` with next content:
+
+    For Telegram:
+
+    ```
+    #!/bin/sh
+    CAI_WATCHDOG_PATH=/etc/cai-watchdog
+    if [ "$PAM_TYPE" = "close_session" ]; then
+      ${CAI_WATCHDOG_PATH}/send-telegram "SSH: User ${PAM_USER} is logged out"
+    fi
+    ```
+
+    For e-mail:
+
+    ```
+    #!/bin/sh
+    CAI_WATCHDOG_PATH=/etc/cai-watchdog
+    if [ "$PAM_TYPE" = "close_session" ]; then
+      ${CAI_WATCHDOG_PATH}/send-mail your@mail.addr 'SSH: User ${PAM_USER} is logged out' 'SSH: User is logged out'
+    fi
+    ```
+    and set executable flag on it
+
+1. Modify ```/etc/pam.d/sshd```, add line ```session     optional    pam_exec.so   quiet /etc/pam.d/pam_session.sh```
+
+## Localization
+You can find locales in ```/etc/cai-watchdog/locales/``` in *nix and in ```locales``` subfolder in Windows.
+
+locale files must be named like locale_name.conf, for example: Russian locale is ru-RU.

scripts/cai-watchdog.cfg.template

@@ -1,13 +0,0 @@
-[main]
-check_interval = 10000
-rules_count = 2
-[rule1]
-service = Test1
-address = http://127.0.0.1:3000/api/v1/
-email = admin@server.local
-command = ./send-telegram.ps1 <message>
-[rule2]
-service = Test2
-address = http://127.0.0.1:3300/api/v1/
-email = admin@server.local
-command = ./send-telegram.ps1 <message>

scripts/unix/etc/cai-watchdog/cai-watchdog.conf.template

@@ -0,0 +1,25 @@
+[main]
+check_interval = 10
+rules_count = 3
+on_start_command = /etc/cai-watchdog/on-start
+
+[rule1]
+service = Test1
+uri = http://127.0.0.1:3000/api/v1/
+process =
+email = admin@server.local
+command = /etc/cai-watchdog/send-telegram <message>
+
+[rule2]
+service = Test2
+uri = http://127.0.0.1:3300/api/v1/
+process =
+email = admin@server.local
+command = /etc/cai-watchdog/send-telegram <message>
+
+[rule3]
+service = Apache
+uri =
+process = httpd
+email = admin@server.local
+command = /etc/cai-watchdog/send-telegram <message>

scripts/unix/etc/cai-watchdog/email.conf.template

@@ -0,0 +1,4 @@
+Username:    user@domain.local
+Password:    str0ngP@$$word
+SMTP Server:    smtp.domain.local
+Port:    465

scripts/unix/etc/cai-watchdog/inc-icons

@@ -0,0 +1,5 @@
+#!/bin/bash
+ICON_INFO=$(echo -e "\U2139")
+ICON_WARNING=$(echo -e "\U26A0")
+ICON_OK=$(echo -e "\U2705")
+ICON_FAIL=$(echo -e "\U274C")

scripts/unix/etc/cai-watchdog/locales/ru-RU.conf

@@ -0,0 +1,26 @@
+[rules]
+cant_find_config_file = Не могу найти файл конфигурации
+check_failed = Проверка завершилась неудачей
+check_is_ok = проверка завершилась успешно
+configuration_file = Конфигурационный файл
+error = Ошибка
+execute = Выполняю
+exiting = Завершаю работу...
+failed_to_execute_process = Не удалось выполнить процесс
+is_not_running = не запущен
+is_not_running_now = сейчас не запущен
+is_offline = неактивна
+is_offline_now = сейчас неактивна
+is_online = активна
+is_online_now = сейчас активна
+is_running = запущен
+is_running_now = сейчас запущен
+process = Процесс
+service = Служба
+service_started = Служба запущена
+state_changed_to_false = состояние изменилось на истину
+state_changed_to_true = состояние изменилось на ложь
+this_help_message = Это справочное сообщение
+usage = Использование
+ver = версия
+version_info = Информация о версии

scripts/unix/etc/cai-watchdog/on-process-state-change

@@ -0,0 +1,29 @@
+#!/bin/bash
+APP_PATH=$(dirname "$0")            # relative
+APP_PATH=$(cd "$APP_PATH" && pwd)    # absolutized and normalized
+if [[ -z "$APP_PATH" ]] ; then
+    # error; for some reason, the path is not accessible
+    # to the script (e.g. permissions re-evaled after suid)
+    APP_PATH="/etc/cai-watchdog"
+fi
+
+##### DEFAULT PARAMS ORDER #####
+## $1 - <email>
+## $2 - <subject>
+## $3 - <message>
+## $4 - <service>
+## $5 - <process>
+## $6 - <status> [running | stopped]
+
+EMAIL=$1
+SUBJECT=$2
+MESSAGE=$3
+SERVICE=$4
+PROCESS=$5
+STATUS=$6
+
+## SAMPLE COMMANDS
+#${APP_PATH}/send-mail "${EMAIL}", "${SUBJECT}", "$MESSAGE"
+#${APP_PATH}/send-telegram-ru "${SERVICE}", "${PROCESS}", "$STATUS"
+
+${APP_PATH}/send-telegram "$MESSAGE"

scripts/unix/etc/cai-watchdog/on-start

@@ -0,0 +1,11 @@
+#!/bin/bash
+APP_PATH=$(dirname "$0")          # relative
+APP_PATH=$(cd "$APP_PATH" && pwd) # absolutized and normalized
+if [[ -z "$APP_PATH" ]] ; then
+    # error; for some reason, the path is not accessible
+    # to the script (e.g. permissions re-evaled after suid)
+    APP_PATH="/etc/cai-watchdog"
+fi
+
+source ${APP_PATH}/inc-icons
+${APP_PATH}/send-telegram "${ICON_INFO} Watchdog is started!"

scripts/unix/etc/cai-watchdog/on-start-ru

@@ -0,0 +1,11 @@
+#!/bin/bash
+APP_PATH=$(dirname "$0")          # relative
+APP_PATH=$(cd "$APP_PATH" && pwd) # absolutized and normalized
+if [[ -z "$APP_PATH" ]] ; then
+    # error; for some reason, the path is not accessible
+    # to the script (e.g. permissions re-evaled after suid)
+    APP_PATH="/etc/cai-watchdog"
+fi
+
+source ${APP_PATH}/inc-icons
+${APP_PATH}/send-telegram "${ICON_INFO} Watchdog запущен!"

scripts/unix/etc/cai-watchdog/on-stop

@@ -0,0 +1,11 @@
+#!/bin/bash
+APP_PATH=$(dirname "$0")          # relative
+APP_PATH=$(cd "$APP_PATH" && pwd) # absolutized and normalized
+if [[ -z "$APP_PATH" ]] ; then
+    # error; for some reason, the path is not accessible
+    # to the script (e.g. permissions re-evaled after suid)
+    APP_PATH="/etc/cai-watchdog"
+fi
+
+source ${APP_PATH}/inc-icons
+${APP_PATH}/send-telegram "${ICON_WARNING} ATTENTION! Watchdog is stopped!"

scripts/unix/etc/cai-watchdog/on-stop-ru

@@ -0,0 +1,11 @@
+#!/bin/bash
+APP_PATH=$(dirname "$0")          # relative
+APP_PATH=$(cd "$APP_PATH" && pwd) # absolutized and normalized
+if [[ -z "$APP_PATH" ]] ; then
+    # error; for some reason, the path is not accessible
+    # to the script (e.g. permissions re-evaled after suid)
+    APP_PATH="/etc/cai-watchdog"
+fi
+
+source ${APP_PATH}/inc-icons
+${APP_PATH}/send-telegram "${ICON_WARNING} ВНИМАНИЕ! Watchdog остановлен!"

scripts/unix/etc/cai-watchdog/on-uri-state-change

@@ -0,0 +1,29 @@
+#!/bin/bash
+APP_PATH=$(dirname "$0")            # relative
+APP_PATH=$(cd "$APP_PATH" && pwd)    # absolutized and normalized
+if [[ -z "$APP_PATH" ]] ; then
+    # error; for some reason, the path is not accessible
+    # to the script (e.g. permissions re-evaled after suid)
+    APP_PATH="/etc/cai-watchdog"
+fi
+
+##### DEFAULT PARAMS ORDER #####
+## $1 - <email>
+## $2 - <subject>
+## $3 - <message>
+## $4 - <service>
+## $5 - <uri>
+## $6 - <status> [online | offline]
+
+EMAIL=$1
+SUBJECT=$2
+MESSAGE=$3
+SERVICE=$4
+URI=$5
+STATUS=$6
+
+## SAMPLE COMMANDS
+#${APP_PATH}/send-mail "${EMAIL}", "${SUBJECT}", "$MESSAGE"
+#${APP_PATH}/send-telegram-ru "${SERVICE}", "${URI}", "$STATUS"
+
+${APP_PATH}/send-telegram "$MESSAGE"

scripts/unix/etc/cai-watchdog/send-mail

@@ -0,0 +1,49 @@
+#!/bin/bash
+APP_PATH=$(dirname "$0")          # relative
+APP_PATH=$(cd "$APP_PATH" && pwd) # absolutized and normalized
+if [[ -z "$APP_PATH" ]] ; then
+    # error; for some reason, the path is not accessible
+    # to the script (e.g. permissions re-evaled after suid)
+    APP_PATH="/etc/cai-watchdog"
+fi
+
+rcpt=$1
+subj=$2
+message=$3
+
+ARGS=$(xargs echo  $(perl -anle 's/^[^:]+//g && s/:\s+//g && print' ${APP_PATH}/email.conf) < /dev/null)
+set -- $ARGS "$@";
+
+declare -A email;
+email['user']=$1
+email['pass']=$2
+email['smtp']=$3
+email['port']=$4
+
+email_content='From: "Watchdog" <'"${email['user']}"'>
+To: "Subscriber" <'"${rcpt}"'>
+Subject: '"${subj}"'
+Date: '"$(date)"'
+
+'"${message}"'
+-----
+'"${HOSTNAME}"'
+';
+
+
+echo "$email_content" | curl -s \ # -vvv \
+    --url "smtps://${email['smtp']}:${email['port']}" \
+    --user "${email['user']}:${email['pass']}" \
+    --mail-from "${email['user']}" \
+    --mail-rcpt "${rcpt}" \
+    --upload-file - \
+    -T -
+
+
+if [[ $? == 0 ]]; then
+    echo;
+    echo 'okay';
+else
+    echo "curl error code $?";
+    man curl | grep "^ \+$? \+"
+fi

scripts/unix/etc/cai-watchdog/send-mail-ru

@@ -0,0 +1,81 @@
+#!/bin/bash
+APP_PATH=$(dirname "$0")          # relative
+APP_PATH=$(cd "$APP_PATH" && pwd) # absolutized and normalized
+if [[ -z "$APP_PATH" ]] ; then
+    # error; for some reason, the path is not accessible
+    # to the script (e.g. permissions re-evaled after suid)
+    APP_PATH="/etc/cai-watchdog"
+fi
+
+source ${APP_PATH}/inc-icons
+
+RCPT=$1
+SERVICE=$2
+PROCESS_OR_URI=$3
+STATE=$4
+
+case $4 in
+  online)
+    SERVICE_OR_PROCESS="Служба"
+    STATE_STR="доступна"
+    ICON=${ICON_OK}
+    ;;
+  running)
+    SERVICE_OR_PROCESS="Процесс"
+    STATE_STR="запущен"
+    ICON=${ICON_OK}
+    ;;
+  offline)
+    SERVICE_OR_PROCESS="Служба"
+    STATE_STR="недоступна"
+    ICON=${ICON_FAIL}
+    ;;
+  stopped)
+    SERVICE_OR_PROCESS="Процесс"
+    STATE_STR="остановлен"
+    ICON=${ICON_FAIL}
+    ;;
+esac
+
+MESSAGE_TEXT="${ICON} ${SERVICE_OR_PROCESS} ${SERVICE} (${PROCESS_OR_URI}) ${STATE_STR}"
+
+
+#subj=$2
+#message=$3
+
+ARGS=$(xargs echo  $(perl -anle 's/^[^:]+//g && s/:\s+//g && print' ${APP_PATH}/email.conf) < /dev/null)
+set -- $ARGS "$@";
+
+declare -A email;
+email['user']=$1
+email['pass']=$2
+email['smtp']=$3
+email['port']=$4
+
+email_content='From: "Watchdog" <'"${email['user']}"'>
+To: "Subscriber" <'"${RCPT}"'>
+Subject: '"${MESSAGE_TEXT}"'
+Date: '"$(date)"'
+
+'"${MESSAGE_TEXT}"'
+-----
+'"${HOSTNAME}"'
+';
+
+
+echo "$email_content" | curl -s \ # -vvv \
+    --url "smtps://${email['smtp']}:${email['port']}" \
+    --user "${email['user']}:${email['pass']}" \
+    --mail-from "${email['user']}" \
+    --mail-rcpt "${RCPT}" \
+    --upload-file - \
+    -T -
+
+
+if [[ $? == 0 ]]; then
+    echo;
+    echo 'okay';
+else
+    echo "curl error code $?";
+    man curl | grep "^ \+$? \+"
+fi

scripts/unix/etc/cai-watchdog/send-telegram

@@ -0,0 +1,38 @@
+#!/bin/bash
+APP_PATH=$(dirname "$0")          # relative
+APP_PATH=$(cd "$APP_PATH" && pwd) # absolutized and normalized
+if [[ -z "$APP_PATH" ]] ; then
+    # error; for some reason, the path is not accessible
+    # to the script (e.g. permissions re-evaled after suid)
+    APP_PATH="/etc/cai-watchdog"
+fi
+
+source ${APP_PATH}/inc-icons
+
+SCRIPT_NAME=$0
+MESSAGE_TEXT=$1
+
+if [ "$#" -ne 1 ]; then
+    echo "You can pass only one argument. For string with spaces put it on quotes"
+    exit 0
+fi
+
+ARGS=$(xargs echo  $(perl -anle 's/^[^:]+//g && s/:\s+//g && print' ${APP_PATH}/telegram.conf) < /dev/null)
+set -- $ARGS "$@";
+
+GROUP_ID=$1
+BOT_TOKEN=$2
+
+# this 3 checks (if) are not necessary but should be convenient
+if [ "${MESSAGE_TEXT}" == "-h" ]; then
+  echo "Usage: `basename ${SCRIPT_NAME}` \"text message\""
+  exit 0
+fi
+
+if [ -z "${MESSAGE_TEXT}" ]
+  then
+    echo "Add message text as second arguments"
+    exit 0
+fi
+
+curl -s --data "text=${MESSAGE_TEXT}" --data "chat_id=$GROUP_ID" 'https://api.telegram.org/bot'$BOT_TOKEN'/sendMessage' > /dev/null

scripts/unix/etc/cai-watchdog/send-telegram-ru

@@ -0,0 +1,65 @@
+#!/bin/bash
+APP_PATH=$(dirname "$0")          # relative
+APP_PATH=$(cd "$APP_PATH" && pwd) # absolutized and normalized
+if [[ -z "$APP_PATH" ]] ; then
+    # error; for some reason, the path is not accessible
+    # to the script (e.g. permissions re-evaled after suid)
+    APP_PATH="/etc/cai-watchdog"
+fi
+
+source ${APP_PATH}/inc-icons
+
+SCRIPT_NAME=$0
+SERVICE=$1
+PROCESS_OR_URI=$2
+STATE=$3
+
+case $3 in
+  online)
+    SERVICE_OR_PROCESS="Служба"
+    STATE_STR="доступна"
+    ICON=${ICON_OK}
+    ;;
+  running)
+    SERVICE_OR_PROCESS="Процесс"
+    STATE_STR="запущен"
+    ICON=${ICON_OK}
+    ;;
+  offline)
+    SERVICE_OR_PROCESS="Служба"
+    STATE_STR="недоступна"
+    ICON=${ICON_FAIL}
+    ;;
+  stopped)
+    SERVICE_OR_PROCESS="Процесс"
+    STATE_STR="остановлен"
+    ICON=${ICON_FAIL}
+    ;;
+esac
+
+MESSAGE_TEXT="${ICON} ${SERVICE_OR_PROCESS} ${SERVICE} (${PROCESS_OR_URI}) ${STATE_STR}"
+
+if [ "$#" -ne 3 ]; then
+    echo "Вы должны передать 3 аргумента - название службы, uri или название процесса и статус. Аргументы с пробелами требуется взять в кавычки"
+    exit 0
+fi
+
+ARGS=$(xargs echo  $(perl -anle 's/^[^:]+//g && s/:\s+//g && print' ${APP_PATH}/telegram.conf) < /dev/null)
+set -- $ARGS "$@";
+
+GROUP_ID=$1
+BOT_TOKEN=$2
+
+# this 3 checks (if) are not necessary but should be convenient
+if [ "${MESSAGE_TEXT}" == "-h" ]; then
+  echo "Usage: `basename ${SCRIPT_NAME}` \"text message\""
+  exit 0
+fi
+
+if [ -z "${MESSAGE_TEXT}" ]
+  then
+    echo "Add message text as second arguments"
+    exit 0
+fi
+
+curl -s --data "text=${MESSAGE_TEXT}" --data "chat_id=$GROUP_ID" 'https://api.telegram.org/bot'$BOT_TOKEN'/sendMessage' > /dev/null

scripts/unix/etc/cai-watchdog/telegram.conf.template

@@ -0,0 +1,2 @@
+Group ID:    Telegram_Group_ID
+Bot token:    Telegram_Bot_Token

scripts/unix/send-telegram.template

@@ -1,23 +0,0 @@
-#!/bin/bash
-
-GROUP_ID=<group_id>
-BOT_TOKEN=<bot_token>
-
-# this 3 checks (if) are not necessary but should be convenient
-if [ "$1" == "-h" ]; then
-  echo "Usage: `basename $0` \"text message\""
-  exit 0
-fi
-
-if [ -z "$1" ]
-  then
-    echo "Add message text as second arguments"
-    exit 0
-fi
-
-if [ "$#" -ne 1 ]; then
-    echo "You can pass only one argument. For string with spaces put it on quotes"
-    exit 0
-fi
-
-curl -s --data "text=$1" --data "chat_id=$GROUP_ID" 'https://api.telegram.org/bot'$BOT_TOKEN'/sendMessage' > /dev/null

scripts/unix/usr/lib/systemd/system/cai-watchdog.service

@@ -5,7 +5,8 @@ Description=Watchdog service
 User=wwwrun
 Group=www
 Type=simple
-ExecStart=/usr/local/bin/cai-watchdog
+ExecStart=/usr/local/sbin/cai-watchdog
+ExecStopPost=/etc/cai-watchdog/on-stop
 
 KillMode=control-group
 NotifyAccess=all

scripts/windows/cai-watchdog.ini.template

@@ -0,0 +1,25 @@
+[main]
+check_interval = 10
+rules_count = 3
+on_start_command = ./on-start.ps1
+
+[rule1]
+service = Test1
+uri = http://127.0.0.1:3000/api/v1/
+process =
+email = admin@server.local
+command = ./send-telegram.ps1 <message>
+
+[rule2]
+service = Test2
+uri = http://127.0.0.1:3300/api/v1/
+process =
+email = admin@server.local
+command = ./send-telegram.ps1 <message>
+
+[rule3]
+service = Apache
+uri =
+process = httpd.exe
+email = admin@server.local
+command = ./send-telegram.ps1 <message>

scripts/windows/locales/ru-RU.conf

@@ -0,0 +1,26 @@
+[rules]
+cant_find_config_file = Не могу найти файл конфигурации
+check_failed = Проверка завершилась неудачей
+check_is_ok = проверка завершилась успешно
+configuration_file = Конфигурационный файл
+error = Ошибка
+execute = Выполняю
+exiting = Завершаю работу...
+failed_to_execute_process = Не удалось выполнить процесс
+is_not_running = не запущен
+is_not_running_now = сейчас не запущен
+is_offline = неактивна
+is_offline_now = сейчас неактивна
+is_online = активна
+is_online_now = сейчас активна
+is_running = запущен
+is_running_now = сейчас запущен
+process = Процесс
+service = Служба
+service_started = Служба запущена
+state_changed_to_false = состояние изменилось на истину
+state_changed_to_true = состояние изменилось на ложь
+this_help_message = Это справочное сообщение
+usage = Использование
+ver = версия
+version_info = Информация о версии

scripts/windows/send-mail.ps1.template

@@ -0,0 +1,9 @@
+$EmailFrom = "yourmailadress@somedomain.com"
+$EmailTo = $args[0]
+$Subject = $args[1]
+$Body = $args[0]
+$SMTPServer = "smtp.somedomain.com"
+$SMTPClient = New-Object Net.Mail.SmtpClient($SmtpServer, 587)
+$SMTPClient.EnableSsl = $true
+$SMTPClient.Credentials = New-Object System.Net.NetworkCredential("usr", "pass");
+$SMTPClient.Send($EmailFrom, $EmailTo, $Subject, $Body)

scripts/windows/send-telegram.ps1.template

@@ -0,0 +1,8 @@
+$Telegramtoken = "Your_Telegram_Token"
+$Telegramchatid = "Your_Telegram_Chat_ID"
+
+$Message = $args[0]
+
+[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12
+
+$Response = Invoke-RestMethod -Uri "https://api.telegram.org/bot$($Telegramtoken)/sendMessage?chat_id=$($Telegramchatid)&text=$($Message)"

scripts/windowss/send-mail.ps1.template

@@ -1,11 +0,0 @@
-Function Send-Mail {
-    $EmailFrom = "yourmailadress@somedomain.com"
-    $EmailTo = $args[0]
-    $Subject = $args[1]
-    $Body = $args[0]
-    $SMTPServer = "smtp.somedomain.com"
-    $SMTPClient = New-Object Net.Mail.SmtpClient($SmtpServer, 587)
-    $SMTPClient.EnableSsl = $true
-    $SMTPClient.Credentials = New-Object System.Net.NetworkCredential("usr", "pass");
-    $SMTPClient.Send($EmailFrom, $EmailTo, $Subject, $Body)
-}

scripts/windowss/send-telegram.ps1.template

@@ -1,10 +0,0 @@
-Function Send-Telegram {
-    Param([Parameter(Mandatory=$true)][String]$Message)
-
-    $Telegramtoken = "Your_Telegram_Token"
-    $Telegramchatid = "Your_Telegram_Chat_ID"
-
-    [Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12
-
-    $Response = Invoke-RestMethod -Uri "https://api.telegram.org/bot$($Telegramtoken)/sendMessage?chat_id=$($Telegramchatid)&text=$($Message)"
-}

src/main.rs

@@ -1,25 +1,47 @@
+//! CAI-Watchdog is a lightweigth watchdog for *nix and Windows
+//! Author: Alexander I. Chebykin (CAI) <alex.chebykin@gmail.com>
+
 #[macro_use]
 extern crate ini;
+extern crate exitcode;
 
+use std::env;
+use std::path::Path;
 use std::thread;
 use std::time::Duration;
-use std::process::Command;
 
-/// Rule description structure
-pub struct Rule {
-    /// Monitored service name
-    pub service: String,
-    /// Monitored URI
-    pub address: String,
-    /// E-mail address for messages
-    pub email: String,
-    /// This command will be executed on state change
-    pub command: String,
-    /// Last state
-    pub last_state: bool,
+mod mods;
+
+use crate::mods::mod_debug::*;
+use crate::mods::mod_fs::*;
+use crate::mods::mod_i18n::*;
+use crate::mods::mod_os::*;
+use crate::mods::mod_tasks::*;
+
+/// Check rule
+///
+/// # Arguments
+///
+/// * `rule` Rule to be checked
+///
+/// # Example
+///
+/// ```
+/// if check(&tasks[i]).await {
+///     println!("ok");
+/// } else {
+///     println!("uh-oh... something wrong!");
+/// }
+/// ```
+async fn check(rule: &Rule) -> bool {
+    return if rule.uri.to_string() != "".to_string() {
+        check_uri(rule.uri.clone()).await
+    } else {
+        check_process(rule.process.clone())
+    };
 }
 
-/// Checks service availability
+/// Checks web-service availability
 ///
 /// # Arguments
 ///
@@ -28,13 +50,13 @@ pub struct Rule {
 /// # Example
 ///
 /// ```
-/// if if check("https://somesite.local/api/v1/".to_string()).await {
+/// if check_uri("https://somesite.local/api/v1/".to_string()).await {
 ///     println!("ok");
 /// } else {
 ///     println!("uh-oh... something wrong!");
 /// }
 /// ```
-async fn check(uri: String) -> bool {
+async fn check_uri(uri: String) -> bool {
     if let Err(_e) = reqwest::get(uri).await {
         return false;
     } else {
@@ -42,135 +64,228 @@ async fn check(uri: String) -> bool {
     }
 }
 
-/// Output to console only in debug version
+/// Print help and program version information
 ///
 /// # Arguments
 ///
-/// * `text` - Message text
+/// * `args` - Command-line arguments
 ///
 /// # Example
 ///
 /// ```
-/// debug_log("Debug version started".to_string());
+/// let args: Vec<String> = env::args().collect();
+///
+/// print_help(args.clone());
 /// ```
-fn debug_log(text: String) {
-    if cfg!(debug_assertions) {
-        println!("{}", text);
+fn print_help(args: Vec<String>) {
+    let locale = Locale::new();
+
+    if cfg!(windows) {
+        if args.len() > 1 && (args[1].to_string() == "/help".to_string() || args[1].to_string() == "/?".to_string()) {
+            const VERSION: &str = env!("CARGO_PKG_VERSION");
+
+            println!("CAI Watchdog {} {}", locale.t().ver, VERSION);
+            println!("");
+            println!("Usage: {} [/? | /help | /v | /ver | config_file]", &args[0]);
+            println!("       /? | /help  : {}", locale.t().this_help_message);
+            println!("       /v | /ver   : {}", locale.t().version_info);
+            println!("       config_file : {}", locale.t().configuration_file);
+
+            std::process::exit(exitcode::OK);
+        } else if args.len() > 1
+            && (args[1].to_string() == "/ver".to_string() || args[1].to_string() == "/v".to_string()) {
+
+            const VERSION: &str = env!("CARGO_PKG_VERSION");
+
+            println!("CAI Watchdog {} {}", locale.t().ver, VERSION);
+
+            std::process::exit(exitcode::OK);
+        }
+    } else {
+        if args.len() > 1 && (args[1].to_string() == "--help".to_string() || args[1].to_string() == "-h".to_string()) {
+            const VERSION: &str = env!("CARGO_PKG_VERSION");
+
+            println!("CAI Watchdog {} {}", locale.t().ver, VERSION);
+            println!("");
+            println!("{}: {} [-h | --help | -v | --ver | config_file]", locale.t().usage, &args[0]);
+            println!("       -h | --help : {}", locale.t().this_help_message);
+            println!("       -v | --ver  : {}", locale.t().version_info);
+            println!("       config_file : {}", locale.t().configuration_file);
+
+            std::process::exit(exitcode::OK);
+        } else if args.len() > 1
+            && (args[1].to_string() == "--ver".to_string() || args[1].to_string() == "-v".to_string()) {
+            const VERSION: &str = env!("CARGO_PKG_VERSION");
+
+            println!("CAI Watchdog {} {}", locale.t().ver, VERSION);
+
+            std::process::exit(exitcode::OK);
+        }
     }
 }
 
-/// Execute shell command
-///
-/// In linux sh command interpreter will be called.
-/// In Windows PowerShell command interpreter will be called.
-///
-/// # Arguments
-///
-/// * `command` - Command to be executed
-///
-/// # Example
-///
-/// ```
-/// execute("gedit".to_string());
-/// ```
-fn execute(command: String) {
-    debug_log(format!("execute {}", command));
-
-    let output = if cfg!(target_os = "windows") {
-        Command::new("powershell")
-                .args(["-NoLogo", "-NonInteractive", "-Command",  &command])
-                .output()
-                .expect("failed to execute process")
-    } else {
-        Command::new("sh")
-                .arg("-c")
-                .arg(&command)
-                .output()
-                .expect("failed to execute process")
-    };
-
-    let result = output.stdout;
-    debug_log(format!("{:?}", result));
-}
-
 fn main() {
-    let cfg_file = if cfg!(windows) {
-        "cai-watchdog.cfg"
+    let locale = Locale::new();
+
+    let args: Vec<String> = env::args().collect();
+
+    print_help(args.clone());
+
+    let mut config_file = get_exe_path();
+
+    if cfg!(windows) {
+        config_file = format!("{}\\cai-watchdog.ini", config_file);
     } else {
-        "/etc/cai-watchdog.cfg"
+        config_file = "/etc/cai-watchdog/cai-watchdog.conf".to_string();
+    }
+
+    let cfg_file = if args.len() > 1 {
+        &args[1]
+    } else {
+        &config_file
     };
 
+    if !Path::new(cfg_file).exists() {
+        println!("\u{26a0} {}! {}.",
+            locale.t().error,
+            locale.t().cant_find_config_file
+        );
+        println!("{}", locale.t().exiting);
+
+        std::process::exit(exitcode::CONFIG);
+    }
+
     let cfg = ini!(cfg_file);
 
-    let check_interval = cfg["main"]["check_interval"].clone().unwrap().parse::<u64>().unwrap();
-    let rules_count    = cfg["main"]["rules_count"].clone().unwrap().parse::<u8>().unwrap();
+    let check_interval = if cfg["main"].contains_key("check_interval") {
+        cfg["main"]["check_interval"].clone().unwrap().parse::<u64>().unwrap() * 1000
+    } else {
+        10000
+    };
 
-    let mut tasks = vec![];
+    let rules_count = if cfg["main"].contains_key("check_interval") {
+        cfg["main"]["rules_count"].clone().unwrap().parse::<u8>().unwrap()
+    } else {
+        0
+    };
+
+    let mut tasks_prc = vec![];
+    let mut tasks_web = vec![];
 
     for i in 1..rules_count + 1 {
-        let service = cfg[&format!("{}{}", "rule", i)]["service"].clone().unwrap();
-        let address = cfg[&format!("{}{}", "rule", i)]["address"].clone().unwrap();
-        let email   = cfg[&format!("{}{}", "rule", i)]["email"].clone().unwrap();
-        let command = cfg[&format!("{}{}", "rule", i)]["command"].clone().unwrap();
+        let service = if cfg[&format!("rule{}", i)].contains_key("service") {
+            cfg[&format!("rule{}", i)]["service"].clone().unwrap()
+        } else {
+            format!("Service {}", i)
+        };
+
+        let uri = if cfg[&format!("rule{}", i)].contains_key("uri") {
+            cfg[&format!("rule{}", i)]["uri"].clone().unwrap()
+        } else {
+            "".to_string()
+        };
+
+        let process = if cfg[&format!("rule{}", i)].contains_key("process") {
+            cfg[&format!("rule{}", i)]["process"].clone().unwrap()
+        } else {
+            "".to_string()
+        };
+
+        let email = if cfg[&format!("rule{}", i)].contains_key("email") {
+            cfg[&format!("rule{}", i)]["email"].clone().unwrap()
+        } else {
+            "".to_string()
+        };
+
+        let command = if cfg[&format!("rule{}", i)].contains_key("command") {
+            cfg[&format!("rule{}", i)]["command"].clone().unwrap()
+        } else {
+            "".to_string()
+        };
 
         debug_log(format!("rule {}", i));
         debug_log(format!("service {}", service));
-        debug_log(format!("address {}", address));
+        debug_log(format!("uri {}", uri));
+        debug_log(format!("process {}", process));
         debug_log(format!("email {}", email));
         debug_log(format!("command {}", command));
 
-        tasks.push(
+        if uri != "".to_string() {
+            tasks_web.push(
                 Rule{
-                service:    cfg[&format!("{}{}", "rule", i)]["service"].clone().unwrap().to_string(),
-                address:    cfg[&format!("{}{}", "rule", i)]["address"].clone().unwrap().to_string(),
-                email:      cfg[&format!("{}{}", "rule", i)]["email"].clone().unwrap().to_string(),
-                command:    cfg[&format!("{}{}", "rule", i)]["command"].clone().unwrap().to_string(),
+                    service: service,
+                    uri: uri,
+                    process: process,
+                    email: email,
+                    command: command,
+                    last_state: false,
+                }
+            );
+        } else {
+            tasks_prc.push(
+                Rule{
+                    service: service,
+                    uri: uri,
+                    process: process,
+                    email: email,
+                    command: command,
                     last_state: false,
                 }
             );
         }
-
-    loop {
-        for i in 0..tasks.len() {
-            let rt = tokio::runtime::Runtime::new().unwrap();
-            rt.block_on(async {
-                if check(tasks[i].address.clone()).await {
-                    if tasks[i].last_state != true {
-                        debug_log(format!("{} state changed to true", tasks[i].address));
-
-                        let shell_cmd = tasks[i].command.to_string()
-                            .replace("<email>", &tasks[i].email)
-                            .replace("<header>", &format!("\"Service {} ({}) online\"", tasks[i].service, tasks[i].address))
-                            .replace("<message>", &format!("\"Service {} ({}) is now online\"", tasks[i].service, tasks[i].address));
-
-                        debug_log(format!("execute {}", shell_cmd));
-
-                        execute(shell_cmd);
     }
 
-                    debug_log(format!("{} check is ok", tasks[i].address));
-
-                    tasks[i].last_state = true
+    let on_start_command = if cfg["main"].contains_key("on_start_command") {
+        cfg["main"]["on_start_command"].clone().unwrap()
     } else {
-                    if tasks[i].last_state != false {
-                        debug_log(format!("{} state changed to false", tasks[i].address));
+        "".to_string()
+    };
 
-                        let shell_cmd = tasks[i].command.to_string()
-                            .replace("<email>", &tasks[i].email)
-                            .replace("<header>", &format!("\"Service {} ({}) offline\"", tasks[i].service, tasks[i].address))
-                            .replace("<message>", &format!("\"Service {} ({}) is now offline\"", tasks[i].service, tasks[i].address));
+    debug_log(format!("\u{2139} {}", locale.t().service_started));
 
-                        debug_log(format!("execute {}", shell_cmd));
-                        execute(shell_cmd);
+    if on_start_command.to_string() != "" {
+        execute(on_start_command);
     }
 
-                    debug_log(format!("{} check failed", tasks[i].address));
+    let mut just_started_web = true;
 
-                    tasks[i].last_state = false
+    std::thread::spawn(move || {
+        loop {
+            for i in 0..tasks_web.len() {
+                let rt = tokio::runtime::Runtime::new().unwrap();
+
+                rt.block_on(async {
+                    if check(&tasks_web[i]).await {
+                        execute_web_task(&mut tasks_web[i], true, just_started_web);
+                    } else {
+                        execute_web_task(&mut tasks_web[i], false, just_started_web);
                     }
                 });
             }
 
+            just_started_web = false;
+
+            thread::sleep(Duration::from_millis(check_interval));
+        }
+    });
+
+    let mut just_started_prc = true;
+
+    loop {
+        for i in 0..tasks_prc.len() {
+            let rt = tokio::runtime::Runtime::new().unwrap();
+
+            rt.block_on(async {
+                if check(&tasks_prc[i]).await {
+                    execute_os_task(&mut tasks_prc[i], true, just_started_prc);
+                } else {
+                    execute_os_task(&mut tasks_prc[i], false, just_started_prc);
+                }
+            });
+        }
+
+        just_started_prc = false;
+
         thread::sleep(Duration::from_millis(check_interval));
     }
 }

src/mods/mod.rs

@@ -0,0 +1,5 @@
+pub mod mod_debug;
+pub mod mod_fs;
+pub mod mod_i18n;
+pub mod mod_os;
+pub mod mod_tasks;

src/mods/mod_debug.rs

@@ -0,0 +1,16 @@
+/// Output to console only in debug version
+///
+/// # Arguments
+///
+/// * `text` - Message text
+///
+/// # Example
+///
+/// ```
+/// debug_log("Debug version started".to_string());
+/// ```
+pub fn debug_log(text: String) {
+    if cfg!(debug_assertions) {
+        println!("{}", text);
+    }
+}

src/mods/mod_fs.rs

@@ -0,0 +1,26 @@
+//! CAI-Watchdog filesystem module
+//! Author: Alexander I. Chebykin (CAI) <alex.chebykin@gmail.com>
+
+use std::env;
+use std::path::PathBuf;
+
+/// Return executable path
+///
+/// Return executable path or . if can't determine it
+pub fn get_exe_path() -> String {
+    let mut dir;
+    let exe_path: String;
+
+    match env::current_exe() {
+        Ok(full_name) => {
+            dir = PathBuf::from(full_name);
+            dir.pop();
+            exe_path = dir.clone().into_os_string().into_string().unwrap();
+        },
+        Err(_e) => {
+            exe_path = ".".to_string();
+        },
+    }
+
+    return exe_path;
+}

src/mods/mod_i18n.rs

@@ -0,0 +1,185 @@
+//! CAI-Watchdog localization module
+//! Author: Alexander I. Chebykin (CAI) <alex.chebykin@gmail.com>
+//!
+//! External localizations stored in /locales/ directory
+
+use std::borrow::Borrow;
+use std::path::Path;
+
+use crate::mods::mod_fs;
+use sys_locale::get_locale;
+
+pub struct Lang {
+    pub cant_find_config_file: String,
+    pub check_failed: String,
+    pub check_is_ok: String,
+    pub configuration_file: String,
+    pub error: String,
+    pub execute: String,
+    pub exiting: String,
+    pub failed_to_execute_process: String,
+    pub is_not_running: String,
+    pub is_not_running_now: String,
+    pub is_offline: String,
+    pub is_offline_now: String,
+    pub is_online: String,
+    pub is_online_now: String,
+    pub is_running: String,
+    pub is_running_now: String,
+    pub process: String,
+    pub service: String,
+    pub service_started: String,
+    pub state_changed_to_false: String,
+    pub state_changed_to_true: String,
+    pub this_help_message: String,
+    pub usage: String,
+    pub ver: String,
+    pub version_info: String
+
+}
+
+pub struct Locale {
+    pub locale:Lang,
+}
+
+impl Locale {
+    pub fn new() -> Self {
+        let mut l:Lang = Lang{
+            cant_find_config_file: "Can't find configuration file".to_string(),
+            check_failed: "check failed".to_string(),
+            check_is_ok: "check is ok".to_string(),
+            configuration_file: "Configuration file".to_string(),
+            error: "Error".to_string(),
+            execute: "Execute".to_string(),
+            exiting: "Exiting...".to_string(),
+            failed_to_execute_process: "Can't execute process".to_string(),
+            is_not_running: "is not running".to_string(),
+            is_not_running_now: "is not running now".to_string(),
+            is_offline: "is offline".to_string(),
+            is_offline_now: "is offline now".to_string(),
+            is_online: "is online".to_string(),
+            is_online_now: "is online now".to_string(),
+            is_running: "is running".to_string(),
+            is_running_now: "is running now".to_string(),
+            process: "Process".to_string(),
+            service: "Service".to_string(),
+            service_started: "Service started".to_string(),
+            state_changed_to_false: "state changed to false".to_string(),
+            state_changed_to_true: "state changed to true".to_string(),
+            this_help_message: "This help message".to_string(),
+            usage: "Usage".to_string(),
+            ver: "ver".to_string(),
+            version_info: "Version info".to_string()
+        };
+
+        let locale = get_locale().unwrap_or_else(|| String::from("en-US"));
+
+        let mut locale_file = mod_fs::get_exe_path();
+
+        locale_file = if cfg!(windows) {
+            format!("{}\\locales\\{}.conf", locale_file, locale)
+        } else {
+            format!("/etc/cai-watchdog/locales/{}.conf", locale)
+        };
+
+        if Path::new(&locale_file).exists() {
+            let cfg = ini!(&locale_file);
+
+            if cfg["rules"].contains_key("cant_find_config_file") {
+                l.cant_find_config_file = cfg["rules"]["cant_find_config_file"].clone().unwrap();
+            }
+            if cfg["rules"].contains_key("check_failed") {
+                l.check_failed = cfg["rules"]["check_failed"].clone().unwrap();
+            }
+            if cfg["rules"].contains_key("check_is_ok") {
+                l.check_is_ok = cfg["rules"]["check_is_ok"].clone().unwrap();
+            }
+            if cfg["rules"].contains_key("configuration_file") {
+                l.configuration_file = cfg["rules"]["configuration_file"].clone().unwrap();
+            }
+            if cfg["rules"].contains_key("error") {
+                l.error = cfg["rules"]["error"].clone().unwrap();
+            }
+            if cfg["rules"].contains_key("execute") {
+                l.execute = cfg["rules"]["execute"].clone().unwrap();
+            }
+            if cfg["rules"].contains_key("exiting") {
+                l.exiting = cfg["rules"]["exiting"].clone().unwrap();
+            }
+            if cfg["rules"].contains_key("failed_to_execute_process") {
+                l.failed_to_execute_process = cfg["rules"]["failed_to_execute_process"].clone().unwrap();
+            }
+            if cfg["rules"].contains_key("is_not_running") {
+                l.is_not_running = cfg["rules"]["is_not_running"].clone().unwrap();
+            }
+            if cfg["rules"].contains_key("is_not_running_now") {
+                l.is_not_running_now = cfg["rules"]["is_not_running_now"].clone().unwrap();
+            }
+            if cfg["rules"].contains_key("is_offline") {
+                l.is_offline = cfg["rules"]["is_offline"].clone().unwrap();
+            }
+            if cfg["rules"].contains_key("is_offline_now") {
+                l.is_offline_now = cfg["rules"]["is_offline_now"].clone().unwrap();
+            }
+            if cfg["rules"].contains_key("is_online") {
+                l.is_online = cfg["rules"]["is_online"].clone().unwrap();
+            }
+            if cfg["rules"].contains_key("is_online_now") {
+                l.is_online_now = cfg["rules"]["is_online_now"].clone().unwrap();
+            }
+            if cfg["rules"].contains_key("is_running") {
+                l.is_running = cfg["rules"]["is_running"].clone().unwrap();
+            }
+            if cfg["rules"].contains_key("is_running_now") {
+                l.is_running_now = cfg["rules"]["is_running_now"].clone().unwrap();
+            }
+            if cfg["rules"].contains_key("process") {
+                l.process = cfg["rules"]["process"].clone().unwrap();
+            }
+            if cfg["rules"].contains_key("service") {
+                l.service = cfg["rules"]["service"].clone().unwrap();
+            }
+            if cfg["rules"].contains_key("service_started") {
+                l.service_started = cfg["rules"]["service_started"].clone().unwrap();
+            }
+            if cfg["rules"].contains_key("state_changed_to_false") {
+                l.state_changed_to_false = cfg["rules"]["state_changed_to_false"].clone().unwrap();
+            }
+            if cfg["rules"].contains_key("state_changed_to_true") {
+                l.state_changed_to_true = cfg["rules"]["state_changed_to_true"].clone().unwrap();
+            }
+            if cfg["rules"].contains_key("this_help_message") {
+                l.this_help_message = cfg["rules"]["this_help_message"].clone().unwrap();
+            }
+            if cfg["rules"].contains_key("usage") {
+                l.usage = cfg["rules"]["usage"].clone().unwrap();
+            }
+            if cfg["rules"].contains_key("ver") {
+                l.ver = cfg["rules"]["ver"].clone().unwrap();
+            }
+            if cfg["rules"].contains_key("version_info") {
+                l.version_info = cfg["rules"]["version_info"].clone().unwrap();
+            }
+        }
+
+        Self {
+            locale: l
+        }
+    }
+
+    /// Return object with locale data
+    ///
+    /// If there is no localization file for current system locale, fallback (English) locale will be returned
+    ///
+    /// # Example
+    ///
+    /// ```
+    /// let locale = mod_locales::Locale::new();
+    ///
+    /// println!("\u{26a0} {}! {}.", locale.t().error, locale.t().cant_find_config_file);
+    /// println!("{}", locale.t().exiting);
+    /// ```
+    pub fn t(&self) -> &Lang {
+        return self.locale.borrow();
+    }
+}

src/mods/mod_os.rs

@@ -0,0 +1,70 @@
+use std::ffi::OsStr;
+use std::process::Command;
+use sysinfo::System;
+
+use crate::mods::mod_debug::*;
+use crate::mods::mod_i18n::*;
+
+/// Check is process running
+///
+/// # Arguments
+///
+/// * `process_name` Process name to be checked
+///
+/// # Example
+///
+/// ```
+/// if check_process("httpd".to_string()).await {
+///     println!("ok");
+/// } else {
+///     println!("uh-oh... something wrong!");
+/// }
+/// ```
+pub fn check_process(process_name: String) -> bool {
+    let mut sys = System::new_all();
+    let mut result: bool = false;
+
+    sys.refresh_all();
+
+    for _process in sys.processes_by_exact_name(OsStr::new(&process_name)) {
+        result = true;
+    }
+
+    return result;
+}
+
+/// Execute shell command
+///
+/// In linux sh command interpreter will be called.
+/// In Windows PowerShell command interpreter will be called.
+///
+/// # Arguments
+///
+/// * `command` - Command to be executed
+///
+/// # Example
+///
+/// ```
+/// execute("gedit".to_string());
+/// ```
+pub fn execute(command: String) {
+    let locale = Locale::new();
+
+    debug_log(format!("{} {}", locale.t().execute, command));
+
+    let output = if cfg!(target_os = "windows") {
+        Command::new("powershell")
+                .args(["-NoLogo", "-NonInteractive", "-Command",  &command])
+                .output()
+                .expect(&locale.t().failed_to_execute_process) //.expect("failed to execute process")
+    } else {
+        Command::new("sh")
+                .arg("-c")
+                .arg(&command)
+                .output()
+                .expect(&locale.t().failed_to_execute_process) //.expect("failed to execute process")
+    };
+
+    let result = output.stdout;
+    debug_log(format!("{:?}", result));
+}

src/mods/mod_tasks.rs

@@ -0,0 +1,206 @@
+use crate::mods::mod_debug::*;
+use crate::mods::mod_i18n::*;
+use crate::mods::mod_os::*;
+
+pub struct Rule {
+    /// Monitored service name
+    pub service: String,
+    /// Monitored URI
+    pub uri: String,
+    /// Monitored process name
+    pub process: String,
+    /// E-mail address for messages
+    pub email: String,
+    /// This command will be executed on state change
+    pub command: String,
+    /// Last state
+    pub last_state: bool,
+}
+
+pub fn execute_web_task(task: &mut Rule, current_state:bool, just_started: bool) {
+    let locale = Locale::new();
+
+    if task.last_state != current_state || just_started {
+        if task.command.to_string() == "".to_string() {
+            if current_state {
+                println!("\u{2705} {} {}", task.uri, locale.t().state_changed_to_true.clone());
+            } else {
+                println!("\u{274c} {} {}", task.uri, locale.t().state_changed_to_false.clone());
+            }
+        } else {
+            if current_state {
+                debug_log(
+                    format!(
+                        "\u{2705} {} {}",
+                        task.uri,
+                        locale.t().state_changed_to_true.clone()
+                    )
+                );
+            } else {
+                debug_log(
+                    format!(
+                        "\u{274c} {} {}",
+                        task.uri,
+                        locale.t().state_changed_to_false.clone()
+                    )
+                );
+            }
+
+            let subject: String = if current_state {
+                format!(
+                    "\"\u{2705} {} {} ({}) {}\"",
+                    locale.t().service,
+                    task.service,
+                    task.uri,
+                    locale.t().is_online.clone()
+                )
+            } else {
+                format!(
+                    "\"\u{274c} {} {} ({}) {}\"",
+                    locale.t().service,
+                    task.service,
+                    task.uri,
+                    locale.t().is_offline.clone()
+                )
+            };
+
+            let shell_cmd =
+                task.command.to_string()
+                    .replace("<email>", &task.email)
+                    .replace("<subject>", &subject)
+                    .replace("<message>", &subject)
+                    .replace("<service>", &task.service)
+                    .replace("<uri>", &task.uri)
+                    .replace(
+                        "<state>",
+                        if current_state {
+                            "online"
+                        } else {
+                            "offline"
+                        }
+                    );
+
+            debug_log(format!("{} {}", locale.t().execute, shell_cmd));
+
+            execute(shell_cmd);
+        }
+    }
+
+    if current_state {
+        debug_log(
+            format!(
+                "\u{2705} {} {}",
+                task.uri,
+                locale.t().check_is_ok.clone()
+            )
+        )
+    } else {
+        debug_log(
+            format!(
+                "\u{274c} {} {}",
+                task.uri,
+                locale.t().check_failed.clone()
+            )
+        );
+    }
+
+    task.last_state = current_state;
+}
+
+pub fn execute_os_task(task: &mut Rule, current_state:bool, just_started: bool) {
+    let locale = Locale::new();
+
+    if task.last_state != current_state || just_started {
+        if task.command.to_string() == "".to_string() {
+            if current_state {
+                println!(
+                    "\u{2705} {} {}",
+                    task.uri,
+                    locale.t().state_changed_to_true.clone()
+                );
+            } else {
+                println!(
+                    "\u{274c} {} {}",
+                    task.uri,
+                    locale.t().state_changed_to_false.clone()
+                )
+            }
+        } else {
+            if current_state {
+                debug_log(
+                    format!(
+                        "\u{2705} {} {}",
+                        task.uri,
+                        locale.t().state_changed_to_true.clone()
+                    )
+                )
+            } else {
+                debug_log(
+                    format!(
+                        "\u{274c} {} {}",
+                        task.uri,
+                        locale.t().state_changed_to_false.clone()
+                    )
+                )
+            }
+
+            let subject: String = if current_state {
+                format!(
+                    "\"\u{2705} {} {} ({}) {}\"",
+                    locale.t().process,
+                    task.service,
+                    task.process,
+                    locale.t().is_running.clone()
+                )
+            } else {
+                format!(
+                    "\"\u{274c} {} {} ({}) {}\"",
+                    locale.t().process,
+                    task.service,
+                    task.process,
+                    locale.t().is_not_running.clone()
+                )
+            };
+
+            let shell_cmd =
+                task.command.to_string()
+                    .replace("<email>", &task.email)
+                    .replace("<subject>", &subject)
+                    .replace("<message>", &subject)
+                    .replace("<service>", &task.service)
+                    .replace("<process>", &task.process)
+                    .replace(
+                        "<state>",
+                        if current_state {
+                            "running"
+                        } else {
+                            "stopped"
+                        }
+                    );
+
+            debug_log(format!("{} {}", locale.t().execute, shell_cmd));
+
+            execute(shell_cmd);
+        }
+    }
+
+    if current_state {
+        debug_log(
+            format!(
+                "\u{2705} {} {}",
+                task.process,
+                locale.t().is_running
+            )
+        );
+    } else {
+        debug_log(
+            format!(
+                "\u{274c} {} {}",
+                task.process,
+                locale.t().is_not_running
+            )
+        );
+    }
+
+    task.last_state = current_state;
+}