Re: [PHP] Start/Stop Service from program php
On Sat, Jul 26, 2008 at 11:48 PM, Micah Gersten [EMAIL PROTECTED] wrote: Generally, apache runs as www-data. What was the output of the command? Actually, Apache generally runs (in order) as nobody, apache, httpd, or daemon. Some distros (such as Ubuntu) or control panel installations (such as Plesk) change this default. For example, Ubuntu Feisty uses 'www-data', and Plesk uses a group of 'psacln'. From PHP, if system access (i.e. - exec(), passthru(), etc.) is allowed, the easiest way to find out which user you are with Apache on *NIX is to run this file in a browser: ?php echo `whoami`; ? -- /Daniel P. Brown Better prices on dedicated servers: Intel 2.4GHz/60GB/512MB/2TB $49.99/mo. Intel 3.06GHz/80GB/1GB/2TB $59.99/mo. Dedicated servers, VPS, and hosting from $2.50/mo. -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Start/Stop Service from program php
Generally, apache runs as www-data. What was the output of the command? Thank you, Micah Gersten onShore Networks Internal Developer http://www.onshore.com I need write a script execute some command, but try start or stop service like named, network this don't work I edit visudo and add the next lines User_Alias MYGROUP = apache, xyz [EMAIL PROTECTED] wrote: Hi I try execute unsucesfull the next code from web page ?php $cmd1 = shell_exec (sudo /sbin/service named stop); echo $cmd1; ? I need write a script execute some command, but try start or stop service like named, network this don't work I edit visudo and add the next lines User_Alias MYGROUP = apache, xyz Cmnd_Alias MYCOMMAND = /sbin/service %MYGROUP ALL = MYCOMMAND %MYGROUP ALL=(ALL) NOPASSWD: ALL But don't work. Suggest? Thanks ... -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Start/stop daemon using php
David Sveningsson schreef: Hi, I've written an application in c which I would like to start/stop as a daemon in gnu/linux. The application has the argument --daemon which forks the process and exits the parent. Then it setups a SIGQUIT signal handler to properly cleanup and terminate. It also maintains a lockfile (with the pid) so only one instance is allowed. So, to start this application I created a php site that calls exec(/path/to/binary --daemon /dev/null 2 /dev/null). Everything is working so far, but I cannot get the application to receive the SIGQUIT when I start using php and exec. Not even manually using kill in the shell. It works correctly if I start manually thought. So, is this possible to do? Doesn't exec allow applications with signal handlers? Is there some other way to terminate the application? there is nothing special about exec that makes working with the kill command different to anything else, though you might take a look at the posix_kill() command instead. e.g. posix_kill(`cat /path/to/pidfile`, SIGQUIT); you say you can't even send SIGQUIT to the daemon using kill on the command line, this suggests the problem lies in the fact that the daemon's signal handler is not actually working (when the process is daemonized). -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Start/stop daemon using php
David Sveningsson wrote: Hi, I've written an application in c which I would like to start/stop as a daemon in gnu/linux. The application has the argument --daemon which forks the process and exits the parent. Then it setups a SIGQUIT signal handler to properly cleanup and terminate. It also maintains a lockfile (with the pid) so only one instance is allowed. So, to start this application I created a php site that calls exec(/path/to/binary --daemon /dev/null 2 /dev/null). Everything is working so far, but I cannot get the application to receive the SIGQUIT when I start using php and exec. Not even manually using kill in the shell. It works correctly if I start manually thought. So obviously something is catching the SIGQUIT before it gets to your daemon. You mention a php site, so I take it you're running apache. In an apache process you then do an exec(something). I think apache is probably taking care of the SIGQUIT. So, is this possible to do? Doesn't exec allow applications with signal handlers? Is there some other way to terminate the application? Why do you have to kill it with an explicit signal - why not not have a way of communicating with the process that'll make it terminate when you raise a flag or send it a message or something. /Per Jessen, Zürich -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Start/stop daemon using php
Hi, You might consider D-BUS for your application and the D-BUS PHP binding which is available since some days too. This would allow you to start / stop your C application in a far more secure way than the suggested one. Please have a look at my original release annoucement at the D-BUS mailing list: http://lists.freedesktop.org/archives/dbus/2008-February/009363.html as well as the download URL: https://sourceforge.net/project/showfiles.php?group_id=17176package_id=68954 Even if the application runs on Windows you might be able to use D-BUS for communication. Daniel Brown schrieb: On Wed, Feb 27, 2008 at 7:51 AM, David Sveningsson [EMAIL PROTECTED] wrote: Hi, I've written an application in c which I would like to start/stop as a daemon in gnu/linux. The application has the argument --daemon which forks the process and exits the parent. Then it setups a SIGQUIT signal handler to properly cleanup and terminate. It also maintains a lockfile (with the pid) so only one instance is allowed. So, to start this application I created a php site that calls exec(/path/to/binary --daemon /dev/null 2 /dev/null). You can (and should) write this out like so: ? exec(/path/to/binary --daemon /dev/nul 21,$ret,$err); ? The means to append to the end of a file. You can use on /dev/null, since it's not a file, but just a black hole, but you may want to get into the habit of redirecting and appending. The 21 redirects channel 2 (STDERR) to channel 1 (STDOUT) so that all output in this case is sent to /dev/null. For any output that would otherwise be generated, $ret will hold STDOUT data, and $err will hold the STDERR code. Everything is working so far, but I cannot get the application to receive the SIGQUIT when I start using php and exec. Not even manually using kill in the shell. It works correctly if I start manually thought. So, is this possible to do? Doesn't exec allow applications with signal handlers? Is there some other way to terminate the application? You may want to launch it from a BASh script. I had written out an example for someone on this list at the beginning of the month. Feel free to check it out and use it, or use any part of it: [Download] http://pilotpig.net/code-library/daemonize.sh [View Source] http://pilotpig.net/code-library/source.php?f=daemonize.sh -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Start/stop daemon using php
On Wed, Feb 27, 2008 at 7:51 AM, David Sveningsson [EMAIL PROTECTED] wrote:
Hi, I've written an application in c which I would like to start/stop as
a daemon in gnu/linux.
The application has the argument --daemon which forks the process and
exits the parent. Then it setups a SIGQUIT signal handler to properly
cleanup and terminate. It also maintains a lockfile (with the pid) so
only one instance is allowed.
So, to start this application I created a php site that calls
exec(/path/to/binary --daemon /dev/null 2 /dev/null).
You can (and should) write this out like so:
?
exec(/path/to/binary --daemon /dev/nul 21,$ret,$err);
?
The means to append to the end of a file. You can use on
/dev/null, since it's not a file, but just a black hole, but you may
want to get into the habit of redirecting and appending. The 21
redirects channel 2 (STDERR) to channel 1 (STDOUT) so that all output
in this case is sent to /dev/null. For any output that would
otherwise be generated, $ret will hold STDOUT data, and $err will hold
the STDERR code.
Everything is working so far, but I cannot get the application to
receive the SIGQUIT when I start using php and exec. Not even manually
using kill in the shell. It works correctly if I start manually thought.
So, is this possible to do? Doesn't exec allow applications with signal
handlers? Is there some other way to terminate the application?
You may want to launch it from a BASh script. I had written out
an example for someone on this list at the beginning of the month.
Feel free to check it out and use it, or use any part of it:
[Download] http://pilotpig.net/code-library/daemonize.sh
[View Source] http://pilotpig.net/code-library/source.php?f=daemonize.sh
--
/Dan
Daniel P. Brown
Senior Unix Geek
? while(1) { $me = $mind--; sleep(86400); } ?
--
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Re: [PHP] Start/stop daemon using php
@4u skrev: Hi, You might consider D-BUS for your application and the D-BUS PHP binding which is available since some days too. This would allow you to start / stop your C application in a far more secure way than the suggested one. Please have a look at my original release annoucement at the D-BUS mailing list: http://lists.freedesktop.org/archives/dbus/2008-February/009363.html as well as the download URL: https://sourceforge.net/project/showfiles.php?group_id=17176package_id=68954 D-BUS sounds excellent, I will definitely try it out. I have never coded D-BUS myself but I don't think it would be too hard. Even if the application runs on Windows you might be able to use D-BUS for communication. Currently neither the application or the frontend is planned to support windows as it is already full of very unix specific code. -- //*David Sveningsson [eXt]* Freelance coder | Game Development Student http://sidvind.com Thou shalt make thy program's purpose and structure clear to thy fellow man by using the One True Brace Style, even if thou likest it not, for thy creativity is better used in solving problems than in creating beautiful new impediments to understanding. -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Start/stop daemon using php
Per Jessen skrev: David Sveningsson wrote: Hi, I've written an application in c which I would like to start/stop as a daemon in gnu/linux. The application has the argument --daemon which forks the process and exits the parent. Then it setups a SIGQUIT signal handler to properly cleanup and terminate. It also maintains a lockfile (with the pid) so only one instance is allowed. So, to start this application I created a php site that calls exec(/path/to/binary --daemon /dev/null 2 /dev/null). Everything is working so far, but I cannot get the application to receive the SIGQUIT when I start using php and exec. Not even manually using kill in the shell. It works correctly if I start manually thought. So obviously something is catching the SIGQUIT before it gets to your daemon. You mention a php site, so I take it you're running apache. In an apache process you then do an exec(something). I think apache is probably taking care of the SIGQUIT. Yes, I am using apache (forgot to mention it). Is there a way to stop apache from catching the signals? So, is this possible to do? Doesn't exec allow applications with signal handlers? Is there some other way to terminate the application? Why do you have to kill it with an explicit signal - why not not have a way of communicating with the process that'll make it terminate when you raise a flag or send it a message or something. Currently I have no other way of communicating than a mysql database (it passes data that needs processing) so I thought it would be quick and easy to just raise a signal. I read in another mail about D-BUS which I think would be a better way of communication. /Per Jessen, Zürich -- //*David Sveningsson [eXt]* Freelance coder | Game Development Student http://sidvind.com Thou shalt make thy program's purpose and structure clear to thy fellow man by using the One True Brace Style, even if thou likest it not, for thy creativity is better used in solving problems than in creating beautiful new impediments to understanding. -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Start/stop daemon using php
David Sveningsson wrote: Per Jessen skrev: So obviously something is catching the SIGQUIT before it gets to your daemon. You mention a php site, so I take it you're running apache. In an apache process you then do an exec(something). I think apache is probably taking care of the SIGQUIT. Yes, I am using apache (forgot to mention it). Is there a way to stop apache from catching the signals? Hmm, when your daemon does a fork(), it should be perfectly capable of installing its own signal handlers. Is SIGQUIT enabled? Check your signal mask. /Per Jessen, Zürich -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
RE: [PHP] start/stop deamon
[snip] can some body tell me how to start/stop a deamon ( eg: dhcpd ) from php ? and also can v apply that same method to start/stop a some script by php ? [/snip] http://www.php.net/exec
RE: [PHP] Start / Stop
Timestamp it at the beginning and the end. Bruce Karstedt President Technology Consulting Associates, Ltd. Tel: 847-735-9488 Fax: 847-735-9474 -Original Message- From: Chris Kay [mailto:[EMAIL PROTECTED]] Sent: Monday, June 24, 2002 6:57 PM To: PHP General List Subject: [PHP] Start / Stop Importance: Low Anyone have some tips on the best way to make a Script started @ 5:45pm Script ended @ 5:50pm Script? --- Chris Kay Technical Support - Techex Communications Website: www.techex.com.au Email: [EMAIL PROTECTED] Telephone: 1300 88 111 2 - Fax: (02) 9970 5788 Address: Suite 13, 5 Vuko Place, Warriewood, NSW 2102 Platinum Channel Partner of the Year - Request DSL - Broadband for Business --- -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
