Merge pull request 'Minor changes.' (#7) from v1 into master

Reviewed-on: https://www.cainet.info/git/cai/CAI-Watchdog/pulls/7

README.md

@@ -4,9 +4,13 @@ Watchdog for monitoring web-services
 
 ## 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)
+###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:** Nothing
+###On Windows
+- PowerShell
 
 ## Configuration file
 

scripts/unix/cai-watchdog.service

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

src/main.rs

@@ -3,9 +3,10 @@ extern crate ini;
 extern crate exitcode;
 
 use std::env;
+use std::path::Path;
+use std::process::Command;
 use std::thread;
 use std::time::Duration;
-use std::process::Command;
 
 /// Rule description structure
 pub struct Rule {
@@ -161,6 +162,13 @@ fn main() {
         "/etc/cai-watchdog.conf"
     };
 
+    if !Path::new(cfg_file).exists() {
+        println!("Error! Can't find configuration file.");
+        println!("Exiting...");
+
+        std::process::exit(exitcode::CONFIG);
+    }
+
     let cfg = ini!(cfg_file);
 
     let check_interval = cfg["main"]["check_interval"].clone().unwrap().parse::<u64>().unwrap() * 1000;