From: Stephen L Johnson <sjohnson@monsters.org>
Date: Mon, 24 Jun 2002 16:59:22 +0000 (+0000)
Subject: made the already_running() function smarter in checking for a running spong-client... 
X-Git-Tag: spong-2_8_0-beta1~73
X-Git-Url: http://git.etc.gen.nz/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=71961e49be5f22765481505cd89dd1bdbf7ec69c;p=spong.git

made the already_running() function smarter in checking for a running spong-client instance.
pushed daemonizing to later in the setup code. this is to allow for startup errors to be logged the console.
---

diff --git a/src/spong-client.pl b/src/spong-client.pl
index 990a9c9..a194221 100755
--- a/src/spong-client.pl
+++ b/src/spong-client.pl
@@ -12,7 +12,7 @@
 # History:
 # (1) Ported bb-local.sh script to perl. (Ed Hill Feb 26, 1997)
 #
-# $Id: spong-client.pl,v 1.21 2002/06/10 20:31:20 sljohnson Exp $
+# $Id: spong-client.pl,v 1.22 2002/06/24 16:59:22 sljohnson Exp $
 
 use lib '@@LIBDIR@@';
 
@@ -48,11 +48,25 @@ $HOST      =~ tr/A-Z/a-z/;
 
 $CHECKS = "";
 
-&load_config_files(); # Loads the user specified configuration information
-&init_logging();      # Initialize logging contexts
-Spong::Daemon::Daemonize  # Daemonize if not signalling or debugging
-  unless ($restart || $kill || $nosleep || $debug || $nodaemonize); 
-&handle_signals();    # Set up handlers, and signal the current server if asked
+load_config_files(); # Loads the user specified configuration information
+init_logging();      # Initialize logging contexts
+
+# signal the current server is asked
+if ( $restart || $kill ) { 
+   handle_signals();
+   exit 0;
+}
+
+if ( already_running() && ! ( $debug || $nosleep ) ) {
+    error( "spong-client is already running" );
+    exit 1;
+}
+
+# Deamonize if not running from command line
+daemonize() if ! ( $debug || $nodaemonize || $nosleep );
+
+# Write our pid to the spong tmp directory.
+system( "echo $$ >$SPONGTMP/spong-client.pid" ) unless $nosleep;
 
 # Find our SPONGSLEEP value
 
@@ -163,11 +177,13 @@ sub load_config_files {
    &debug( "configuration file(s) loaded" );
 }
 
-# This is part of the set up code, this sets up the signal handlers, and
-# handles any command line arguments that are given to us that tell us to
-# signal the current running spong-server program.
+# This is part of the set up code. This daemonized the program and 
+# this sets up the signal handlers
 
-sub handle_signals {
+sub daemonize {
+
+   # Daemonize
+   Spong::Daemon::Daemonize 
 
    # Clear out signal mask in case we inherit any blocked sigs
 
@@ -178,15 +194,24 @@ sub handle_signals {
    # listen for the HUP signal, and if we se that, we re-exec ourself.
 
    $SIG{'QUIT'} = \&exit_handler;
+   $SIG{'TERM'} = \&exit_handler;
    $SIG{'HUP'}  = \&hup_handler;
    $SIG{'USR1'}  = \&hup_handler;
    $SIG{'PIPE'} = \&pipe_handler;
 
+}
+
+
+# Handles any command line arguments that are given to us that tell us to
+# signal the current running spong-server program.
+
+sub handle_signals {
+
    # If the user gives us the --restart or --kill flags, then we signal the
    # currently running spong-client process, and tell it to either die, or
    # re-exec itself (which causes it to re-read it's configuration files.
 
-   if( $restart || $kill ) {
+   if( already_running() ) {
       open( PID, "$SPONGTMP/spong-client.pid") || die "Can't find pid: $!";
       my $pid = <PID>; chomp $pid;
       close PID;
@@ -196,21 +221,19 @@ sub handle_signals {
       if( $kill ) { 
 	 &debug( "telling pid $pid to die" ); kill( 'QUIT', $pid );}
       
-      exit(0);
+   } else {
+      debug("Can't find instance of spong-client running");
    }
 
-   # Check to see if we are already running 
-   &already_running() unless $nosleep;
-
-   # Write our pid to the spong tmp directory.
-   
-   system( "echo $$ >$SPONGTMP/spong-client.pid" ) unless $nosleep;
 }
 
 # This routine check to see if another instance of spong-server is already
-# running. If there is another instance, this instance will complain and die
+# running.
 
 sub already_running {
+
+   my $retcd = 0;
+
    # if there is a PID file
    if ( -f "$SPONGTMP/spong-client.pid" ) {
       # Read the pid
@@ -219,13 +242,17 @@ sub already_running {
       close PID;
 
       if ( kill 0,$pid ) {
-         `ps -fp $pid | grep spong-client >/dev/null`;
+         my $myps;
+         # If $PS has a sort pipe, skip it 
+         if ( $PS =~ m/^(.*)\|.*sort/ ) { $myps = $1 } else { $myps = $PS }
+         `$myps | grep -v grep | grep $pid | grep spong-client >/dev/null`;
          if ( ! $? ) {
-            &error("Spong-client is already running as pid $pid");
-            exit 1;
+            $retcd = 1;
          }
       }
    }
+
+   return $retcd;
 }
 
 
@@ -238,7 +265,7 @@ sub error { Spong::Log::error($_[0]); }
 # Signal handlers...
 
 sub exit_handler { 
-   &debug( "caught QUIT signal, exiting..." );
+   debug( "caught QUIT signal, exiting..." );
    unlink "$SPONGTMP/spong-client.pid" if -f "$SPONGTMP/spong-client.pid";
    exit(0);
 }