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Stopping Apache with commandline

 
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tdonovan
Moderator


Joined: 17 Dec 2005
Posts: 610
Location: Milford, MA, USA

PostPosted: Tue 15 Aug '06 18:58    Post subject: Stopping Apache with commandline Reply with quote

If you have a C compiler, you can set the shutdown or restart Windows Events from a command-line program.

Here's some (rather quick & dirty) MS Visual C++ v6 source for such a program:
Code:
/* httpd_shutdown.c
*   Shut down a running Apache 2 server on Windows
*   Compile (VC6):     CL   httpd_shutdown.c    Advapi32.lib
*/
#include <windows.h>
#include <stdio.h>
static HANDLE shutdown_event = NULL;  /* used to signal Apache 2 to shutdown */
static HANDLE restart_event = NULL;   /* used to signal Apache 2 to restart */

main(int argc, char **argv)
{   char *signal_shutdown_name = (char *) calloc(128,1);
    BOOL result = 0;
    char *pidfilename = (char *) calloc(256,1);
    char *pidbuff = (char *) calloc(11,1);
    FILE *pidfile  = NULL;
    char *action_name[] = {"shutdown","restart"};
    int action = 0;

    if (argc < 2)
    {   printf("Usage:\n httpd_shutdown  Apache_rootdir  [restart]\n");
        return 2;
    }
    if (argc > 2 && _stricmp(argv[2],"restart") == 0)  action=1;    // restart instead of shutdown
    sprintf(pidfilename, "%s\\logs\\httpd.pid", argv[1]);           // find the PID file and open it
    pidfile = fopen(pidfilename,"r");
    if (pidfile == NULL)
    {   fprintf( stderr, "Error opening \"%s\"\n\t%s\n", pidfilename, _strerror(NULL) );
        return 1;
    }
    fread( pidbuff, sizeof( char ), 10, pidfile );   
    sprintf(signal_shutdown_name, "ap%d_%s", atoi(pidbuff), action_name[action] );  // like "ap1234_shutdown"
    printf("setting apache PID %d shutdown event:  %s\n", atoi(pidbuff), signal_shutdown_name);
    shutdown_event = OpenEvent(EVENT_MODIFY_STATE, FALSE, signal_shutdown_name);    // get the (existing) event
    if (shutdown_event == NULL)
    {   fprintf( stderr, "Could not acquire event named \"%s\"\n\t%s\n", signal_shutdown_name, _strerror(NULL) );
        return 1;
    }
    result = SetEvent(shutdown_event);                                          // set the event
    if (!result)
    {   fprintf( stderr, "Acquired but could not set event named \"%s\"\n\t%s\n",
            signal_shutdown_name, _strerror(NULL) );
        return 1;
    }
    return result;
}


It takes your Apache 2 root directory as a single argument, for example:

C:\> httpd_shutdown.exe "C:\Program Files\Apache Group\Apache22"

It works OK for me on Windows 2000 with Apache/2.2.2.
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James Blond
Moderator


Joined: 19 Jan 2006
Posts: 6225
Location: Germany, Next to Hamburg

PostPosted: Wed 16 Aug '06 15:01    Post subject: Reply with quote

i have compiled it with MinGW32 gcc C/C++/Java/Fortran Compiler 2.0.0.3

Thanks it runs great! Now I can restart my server from the internet with PHP!
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James Blond
Moderator


Joined: 19 Jan 2006
Posts: 6225
Location: Germany, Next to Hamburg

PostPosted: Thu 17 Aug '06 19:40    Post subject: Reply with quote

Hm, under Windows 2003 server it shuts Apache always down. Sad It doesn't restart. Under XP there is a Problem since SP 2.
That is realy tricky, because I use the same config file and the same binary on the 3 different PC's.

from the error log
Code:

Parent: Received restart signal -- Restarting the server.
[Thu Aug 17 19:42:45 2006] [notice] Child 3568: Exit event signaled. Child process is ending.
[Thu Aug 17 19:42:46 2006] [notice] Child 3568: Released the start mutex
[Thu Aug 17 19:42:47 2006] [notice] Child 3568: Waiting for 250 worker threads to exit.
[Thu Aug 17 19:42:47 2006] [notice] Child 3568: All worker threads have exited.
[Thu Aug 17 19:42:47 2006] [notice] Child 3568: Child process is exiting


So it tries to restart, but it don't!
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tdonovan
Moderator


Joined: 17 Dec 2005
Posts: 610
Location: Milford, MA, USA

PostPosted: Sun 20 Aug '06 16:40    Post subject: Reply with quote

I don't get that!?! Apache is apparently getting the restart signal OK. That's all this program really does - just sets the restart signal.

I don't have windows 2003, but I tried it with Apache 2.2.3 on Windows XP-SP2 and I didn't have a problem with restart:
Quote:
[Sun Aug 20 10:14:17 2006] [notice] Parent: Received restart signal -- Restarting the server.
[Sun Aug 20 10:14:17 2006] [notice] Child 3772: Exit event signaled. Child process is ending.
[Sun Aug 20 10:14:18 2006] [notice] Child 3772: Released the start mutex
[Sun Aug 20 10:14:18 2006] [notice] Digest: generating secret for digest authentication ...
[Sun Aug 20 10:14:18 2006] [notice] Digest: done
[Sun Aug 20 10:14:18 2006] [notice] Apache/2.2.3 (Win32) mod_ssl/2.2.3 OpenSSL/0.9.8b configured -- resuming normal operations
[Sun Aug 20 10:14:18 2006] [notice] Server built: Aug 17 2006 11:48:50
[Sun Aug 20 10:14:18 2006] [notice] Parent: Created child process 3740
[Sun Aug 20 10:14:19 2006] [notice] Digest: generating secret for digest authentication ...
[Sun Aug 20 10:14:19 2006] [notice] Digest: done
[Sun Aug 20 10:14:19 2006] [notice] Child 3740: Child process is running
[Sun Aug 20 10:14:19 2006] [notice] Child 3740: Acquired the start mutex.
[Sun Aug 20 10:14:19 2006] [notice] Child 3740: Starting 250 worker threads.
[Sun Aug 20 10:14:19 2006] [notice] Child 3740: Starting thread to listen on port 443.
[Sun Aug 20 10:14:19 2006] [notice] Child 3740: Starting thread to listen on port 80.
[Sun Aug 20 10:14:20 2006] [notice] Child 3772: Waiting for 250 worker threads to exit.
[Sun Aug 20 10:14:22 2006] [notice] Child 3772: All worker threads have exited.
[Sun Aug 20 10:14:22 2006] [notice] Child 3772: Child process is exiting

A couple of wild guesses you might try:
    click [Properties] for bin\httpd.exe and set [Compatibility] to Windows-2000 compatibility mode

    check the registry entry for HKEY_LOCAL_MACHINE\SOFTWARE\Apache Group\Apache\v.v.v

    check your Windows event logs

Question Other than that, I'm baffled! Question

I'd ask what version of Apache you are running; but I just tried it on several old 2.0.x installs, and even on Apache 1.3.37. To my surprise restart worked OK on all of them. I don't think the Apache restart mechanism has changed much on Windows.

-tom-
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James Blond
Moderator


Joined: 19 Jan 2006
Posts: 6225
Location: Germany, Next to Hamburg

PostPosted: Tue 11 Mar '08 18:41    Post subject: Reply with quote

I made some changes Wink

Code:

--- httpd_shutdown.c.orig   Wed Aug 16 14:06:03 2006
+++ httpd_shutdown.c   Tue Mar 11 16:44:41 2008
@@ -7,10 +7,10 @@
 static HANDLE shutdown_event = NULL;  /* used to signal Apache 2 to shutdown */
 static HANDLE restart_event = NULL;   /* used to signal Apache 2 to restart */
 
-main(int argc, char **argv)
+int main(int argc, char **argv)
 {   char *signal_shutdown_name = (char *) calloc(128,1);
     BOOL result = 0;
-    char *pidfilename = (char *) calloc(256,1);
+    char pidfilename[256];
     char *pidbuff = (char *) calloc(11,1);
     FILE *pidfile  = NULL;
     char *action_name[] = {"shutdown","restart"};
@@ -18,14 +18,14 @@
 
     if (argc < 2)
     {   printf("Usage:\n httpd_shutdown  Apache_rootdir  [restart]\n");
-        return 2;
+        return -2;
     }
-    if (argc > 2 && _stricmp(argv[2],"restart") == 0)  action=1;    // restart instead of shutdown
+    if (argc > 2 && _stricmp(argv[2],"restart") == 0){  action=1; }   // restart instead of shutdown
     sprintf(pidfilename, "%s\\logs\\httpd.pid", argv[1]);           // find the PID file and open it
     pidfile = fopen(pidfilename,"r");
     if (pidfile == NULL)
     {   fprintf( stderr, "Error opening \"%s\"\n\t%s\n", pidfilename, _strerror(NULL) );
-        return 1;
+        return -1;
     }
     fread( pidbuff, sizeof( char ), 10, pidfile );   
     sprintf(signal_shutdown_name, "ap%d_%s", atoi(pidbuff), action_name[action] );  // like "ap1234_shutdown"
@@ -33,13 +33,13 @@
     shutdown_event = OpenEvent(EVENT_MODIFY_STATE, FALSE, signal_shutdown_name);    // get the (existing) event
     if (shutdown_event == NULL)
     {   fprintf( stderr, "Could not acquire event named \"%s\"\n\t%s\n", signal_shutdown_name, _strerror(NULL) );
-        return 1;
+        return -1;
     }
     result = SetEvent(shutdown_event);                                          // set the event
     if (!result)
     {   fprintf( stderr, "Acquired but could not set event named \"%s\"\n\t%s\n",
             signal_shutdown_name, _strerror(NULL) );
-        return 1;
+        return -1;
     }
     return result;
 }
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