Comments on: PHP SSH2 code http://blog.apokalyptik.com/2010/08/27/php-ssh2-code/ The random things that spew forth from my brain... Fri, 25 Jan 2013 23:59:19 +0000 hourly 1 http://wordpress.org/?v=3.6-beta2-24222 By: apokalyptik http://blog.apokalyptik.com/2010/08/27/php-ssh2-code/comment-page-1/#comment-9175 apokalyptik Sun, 05 Sep 2010 17:58:58 +0000 http://blog.apokalyptik.com/?p=659#comment-9175 This is just meant to be some helpful started code for a cog in a bigger application so how you wanted to go about the rest of implementation really depends on what you're doing. Probably the simplest thing would be to read the user/pass from STDIN, and keep trying an mt_rand(min,max) port possibly on multiple localhost addresses (did you know you can bind lots of 127 ip addresses to lo?) and communicate the found ip/port on STDOUT before firing up the loop. This way your controlling process could write/read relevant information from proc_open() pipes. There of course are lots of other things you could do depending on your needs. I would avoid using an IPC socket pair except maybe as a heartbeat monitor to make sure the controlling process hasn't gone away (but even that is dependent on how you're using the thing.) Also I've documented how to use password authentication with the SSH command in another post on this blog which you might be interested in reading.

]]> By: Alfred Armstrong http://blog.apokalyptik.com/2010/08/27/php-ssh2-code/comment-page-1/#comment-9170 Alfred Armstrong Sun, 05 Sep 2010 09:15:21 +0000 http://blog.apokalyptik.com/?p=659#comment-9170 One thing: since the tunnel script once created just sits there waiting, it can't be used except as a background task of some kind. So are you running it via the commandline, or forking a process from PHP?

If the former I guess it's an improvement on the ssh command because you can get passwords etc from a database and that makes life easier, but there's still a potential issue with managing the allocation of ports, isn't there? Are you using some kind of IPC so your PHP components all know what's going on?

]]> By: apokalyptik http://blog.apokalyptik.com/2010/08/27/php-ssh2-code/comment-page-1/#comment-9156 apokalyptik Fri, 03 Sep 2010 07:31:14 +0000 http://blog.apokalyptik.com/?p=659#comment-9156 Glad it helped! And yes on both counts — the lack of useful examples is frustrating AND it would be nice to be able to tell mysql_p?connect() to use it like that. Actually what would be the most useful to most people would be to have ssh2_socket_create_pair() a la socket_create_pair()

]]> By: Alfred Armstrong http://blog.apokalyptik.com/2010/08/27/php-ssh2-code/comment-page-1/#comment-9155 Alfred Armstrong Fri, 03 Sep 2010 07:25:43 +0000 http://blog.apokalyptik.com/?p=659#comment-9155 Just what I've been looking for. There's a sad lack of practical examples of usage of the ssh2_tunnel. It's a pity mysql can't be connected directly through the tunnel to save having to use a local port, isn't it?

]]> By: Thorsten Ott http://blog.apokalyptik.com/2010/08/27/php-ssh2-code/comment-page-1/#comment-9116 Thorsten Ott Sat, 28 Aug 2010 13:35:37 +0000 http://blog.apokalyptik.com/?p=659#comment-9116 That's an other great finding on your blog. I'm sure I'll need it at some point.

]]> By: Frieder http://blog.apokalyptik.com/2010/08/27/php-ssh2-code/comment-page-1/#comment-9115 Frieder Sat, 28 Aug 2010 03:26:52 +0000 http://blog.apokalyptik.com/?p=659#comment-9115 nice to know, thanks!

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