From 01b5d6290a0d704099cef17071c1fc50b3049bee Mon Sep 17 00:00:00 2001
From: paulr <me@pjr.cc>
Date: Tue, 8 Feb 2011 16:43:30 +1100
Subject: [PATCH] lots of coded stuff, the beginnings of the server/client comms bits

---
 doco/pseudo.txt                 |   36 +++++++++++++++-
 gaas/gaasd/gaasclient.php       |    9 ++++
 gaas/gaasd/gaasd.php            |   44 ++++++++++++++++++-
 gaas/lib/gaasClientMessages.php |   44 ++++++++++++++++++
 gaas/lib/gaasdClient.php        |   92 ++++++++++++++++++++++++++++++++++++++-
 gaas/lib/gaasdLib.php           |    7 +--
 gaas/lib/gaasdMessages.php      |   73 +++++++++++++++++++++++++++++++
 gaas/lib/globalLib.php          |   81 ++++++++++++++++++++++++++++++++++
 8 files changed, 378 insertions(+), 8 deletions(-)
 create mode 100644 gaas/gaasd/gaasclient.php
 create mode 100644 gaas/lib/gaasClientMessages.php
 create mode 100644 gaas/lib/gaasdMessages.php
 create mode 100644 gaas/lib/globalLib.php

diff --git a/doco/pseudo.txt b/doco/pseudo.txt
index 7aa375f..4ab05c3 100644
--- a/doco/pseudo.txt
+++ b/doco/pseudo.txt
@@ -4,4 +4,38 @@ start:
 	am I inited?
 		yes: load from datastore (AD, database, etc)
 		no: tell any request returns "uninited"
-	figure out my datastore.
\ No newline at end of file
+	figure out my datastore.
+
+	
+Setup:
+	gaasd starts up with backend set to none
+	index.php, admin.php redirect to setup.php
+	setup.php asks questions (ad/in)
+	setup.php sends gaasd setup instructions
+	gaasd checks config
+	setup.php redirects to admin.php if setup works
+	
+	
+	
+Plugins, how they work
+so in globalLib you define a message:
+define("MSG_STATUS", 18);
+
+then you define a functional prefix
+$MESSAGES[MSG_STATUS] = "gaasStatus";
+
+then in gaasClientMessages you define gaasStatus_clientsend($params) where $params is an array of parameters in the function call
+this returns a "vals" structure thats sent to "sent" to the server, then gaasStatus_clientrecv(..) which accepts that data back from the server
+
+then in gaasdMessages.php you define gaasStatus_server(...) which defines a method for handling the data at the server side.
+
+In code you then call $class->MSG_STATUS(params);
+
+
+$params in clientsend is the arguments sent via MSG_STATUS([0], [1], ...);
+
+$params is then played with to create a single text variable (such as a serialised data structure) and returned to the gasdclient and sent to the server
+
+server receives what clientsend returns in _server($params) as $params.
+
+server then returns its data via a text variable in the return which is then send back to clientrecv($params) as $params;
\ No newline at end of file
diff --git a/gaas/gaasd/gaasclient.php b/gaas/gaasd/gaasclient.php
new file mode 100644
index 0000000..8151e17
--- /dev/null
+++ b/gaas/gaasd/gaasclient.php
@@ -0,0 +1,9 @@
+<?php
+
+require_once("../lib/gaasdClient.php");
+
+$myga = new GAASClient();
+
+$myga->MSG_STATUS("asdf");
+
+?>
\ No newline at end of file
diff --git a/gaas/gaasd/gaasd.php b/gaas/gaasd/gaasd.php
index cb716a7..9ce58c6 100644
--- a/gaas/gaasd/gaasd.php
+++ b/gaas/gaasd/gaasd.php
@@ -1,7 +1,7 @@
 <?php 
 
 // get out master library for gaasd daemon
-require_once("../lib/lib.php");
+require_once("../lib/gaasdLib.php");
 
 // first we want to fork into the background like all good daemons should
 //$pid = pcntl_fork();
@@ -43,8 +43,50 @@ if($pid == -1) {
 		} else if(!$forked) {
 			// I am the child, i process the request
 			// all the shit down below goes in here
+			$recvd = "";
+			$continue = true;
+			while($continue) {
+				$size = socket_recv($data_socket, $recvd_a, 1024, 0);
+				$recvd .= $recvd_a;
+				if(preg_match("/.*\:EOD$/", $recvd)) {
+					// we have a full string... break out
+					$continue = false;
+					break;
+				}
+			}
+			
+			$xps = explode(":", $recvd);
+			$component =  unserialize(base64_decode($xps[1]));
+			$msg_type = $component["type"];
+			$msg = $component["data"];
+
+			$data_returned = processMessage($msg_type, $msg);
+			
+			$d_comp["type"] = $msg_type;
+			$d_comp["data"] = $data_returned;
+			
+			$realdata_returning = "AS:".base64_encode(serialize($d_comp)).":EOD";
+			
+			socket_send($data_socket, $realdata_returning, strlen($realdata_returning), 0);
+			socket_close($data_socket);
 		}
 	}
 }
 
+function processMessage($msg_type, $msg)
+{
+	global $MESSAGES;
+
+	$function = $MESSAGES[$msg_type]."_server";
+	
+	if(function_exists($function)) {
+		return $function($msg);
+	} else {
+		error_log("Call to undefined function! $function\n");
+		return false;
+	}
+	
+}
+
+
 ?>
\ No newline at end of file
diff --git a/gaas/lib/gaasClientMessages.php b/gaas/lib/gaasClientMessages.php
new file mode 100644
index 0000000..f401e1d
--- /dev/null
+++ b/gaas/lib/gaasClientMessages.php
@@ -0,0 +1,44 @@
+<?php
+
+// thie file defines the messages sent too and from the gaas client.
+function gaasStatus_clientsend($params)
+{
+	return $params[0];
+}
+
+function gaasStatus_clientrecv($params)
+{
+	print_r($params);
+	echo "Server status is $params\n";
+}
+
+
+// INIT server message
+// params are:
+// AD: "AD", "user", "pass", "domain", "client def", "admin def"
+// IN: "IN", "user", "pass"
+function gaasInitServer_clientsend($params)
+{
+	$msg["backend"] = $params[0];
+	$msg["user"] = $params[1];
+	$msg["pass"] = $params[2];
+	if($msg["backend"] == "AD") {
+		$msg["domain"] = $params[3];
+		$msg["clientdef"] = $params[4];
+		$msg["admindef"] = $params[4];
+	} else if($msg["backend"] == "IN") {
+		// we dont do anything
+	} else {
+		// invalid backend type
+		return false;
+	}
+	
+	return $msg;
+}
+
+// pretty simple, it either works or doesnt, we just pass on the result
+function gaasInitServer_clientrecv($params)
+{
+	return $params;
+}
+?>
\ No newline at end of file
diff --git a/gaas/lib/gaasdClient.php b/gaas/lib/gaasdClient.php
index 36da285..4226368 100644
--- a/gaas/lib/gaasdClient.php
+++ b/gaas/lib/gaasdClient.php
@@ -1,5 +1,95 @@
-<?php 
+<?php
+
+
+require_once("globalLib.php");
+require_once("gaasClientMessages.php");
 
 // I am the gaasd client.. i know all, i see all... I am the "only" way to interact with the gaasd server.
 
+class GAASClient {
+	
+	// the main send/receive functions. Communicates with gaasd
+	// we always expect one send followed by one receive message
+	function sendReceive($message_type, $message)
+	{
+		// yeah... this is totally gunna work
+		global $TCP_PORT_NUMBER;
+		
+		$socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
+		$res = socket_connect($socket, "127.0.0.1", $TCP_PORT_NUMBER);
+		if(!$res) {
+			socket_close($socket);
+			return false;
+		}
+		
+		$msg["type"] = $message_type;
+		$msg["data"] = $message;
+		
+		$datacomp = base64_encode(serialize($msg));
+		$tosend = "AC:$datacomp:EOD";
+		
+		socket_send($socket, $tosend, strlen($tosend), 0);
+		
+		// get up to one meg of data - this is bad... i can feel this function
+		// hurting alot
+		// TODO FIX THIS - its garbage code... im not really sure how to handle this really
+		// we need to read back as AS:data:EOD - i think it now does.. i hope, tho we need
+		// timeouts now.
+		$recvd = "";
+		$continue = true;
+		while($continue) {
+			$size = socket_recv($socket, $recvd_a, 1024, 0);
+			$recvd .= $recvd_a;
+			if(preg_match("/.*\:EOD$/", $recvd)) {
+				// we have a full string... break out
+				$continue = false;
+				break;
+			}
+		}
+		
+		
+		// first check we got something that makes sense
+		if(preg_match("/^AS:.*:EOD/", $recvd) < 1) {
+			socket_close($socket);
+			// we have a problem jim
+			return false;
+		}
+		
+		$xps = explode(":", $recvd);
+		
+		$component =  unserialize(base64_decode($xps[1]));
+		
+		if($component["type"] != $message_type) {
+			// we have a problem jim
+			socket_close($socket);
+			return false;
+		}
+		
+		socket_close($socket);
+		
+		return $component["data"];
+	}
+	
+	// this is one thing i love about php... how truely dynamic it can be in very easy to do ways.
+	// im not entirely sure what im doing with this bit yet
+	function __call($func, $params)
+	{
+		// im a little stuck here.
+		//  want messages to be defineable in terms of plugins
+		// but i dont think this is the way to do it
+		global $MESSAGES;
+		$st_defined = constant($func);
+		//echo "func is $st_defined\n";
+		$function_send = $MESSAGES[$st_defined]."_clientsend";
+		$function_recv = $MESSAGES[$st_defined]."_clientrecv";
+		//echo "real function is $function_send, $function_recv\n";
+		
+		if(function_exists($function_send) && function_exists($function_recv)) {
+			$function_recv($this->sendReceive($st_defined, $function_send($params)));
+		} else {
+			error_log("Function, $function does not exist!");
+		}
+	}
+}
+
 ?>
\ No newline at end of file
diff --git a/gaas/lib/gaasdLib.php b/gaas/lib/gaasdLib.php
index 5cfe52f..a9fd81d 100644
--- a/gaas/lib/gaasdLib.php
+++ b/gaas/lib/gaasdLib.php
@@ -1,14 +1,11 @@
 <?php 
 
-// first include the ga4php.php file itself
-$BASE_DIR = realpath(dirname(__FILE__)."/../../");
-global $BASE_DIR;
+require_once("globalLib.php");
+require_once("gaasdMessages.php");
 
 // messy
 require_once(dirname(__FILE__)."/../../lib/ga4php.php");
 
-
-
 // first we check if our db exists, if not, we're not inited
 $initState = false;
 $backEnd = "";
diff --git a/gaas/lib/gaasdMessages.php b/gaas/lib/gaasdMessages.php
new file mode 100644
index 0000000..e518067
--- /dev/null
+++ b/gaas/lib/gaasdMessages.php
@@ -0,0 +1,73 @@
+<?php
+
+// this file defines all the messages used by gaaasd
+
+// there are only really two status messages at this point - "init" meaning we have no been defined yet
+// and "running" meaning we have been defined
+function gaasStatus_server($messages)
+{
+	global $initState, $backEnd;
+
+	$return = "init";
+	if($initState != false && $backEnd != "") {
+		$return = "running";
+	}
+	
+	return $return;
+}
+
+
+function gaasInitServer_server($msg)
+{
+	global $initState, $backEnd;
+	
+	// here we "init" the server, if we're ad, we attempt to connect to AD and if it all works
+	// we then create the db
+	// $m["backend"] = "AD|IN";
+	// AD expects:
+	// $m["domain"] = "somedomain.com";
+	// $m["user"] = "someuser";
+	// $m["pass"] = "somepassword";
+	// $m["userdef"] = "user definition paramaters";
+	// IN expects
+	// $m["user"] = "someuser";
+	// $m["pass"] = "somepass";
+	
+	if($msg["backend"] == "AD") {
+		$backEnd = "AD";
+		// attempt connect to AD, verify creds
+		$addom = $msg["domain"];
+		$adlogin = $msg["user"];
+		$adpass = $msg["pass"];
+		$adclientdef = $msg["clientdef"];
+		$adadmindef = $msg["admindef"];
+		// now wee test our logins...
+		
+		
+		// then
+		createDB();
+		confSetVal("ad.domain", $addom);
+		confSetVal("ad.user", $adlogin);
+		confSetVal("ad.pass", $adpass);
+		confSetVal("ad.encryptionkey", generateHexString(32));
+		confSetVal("ad.clientdef", $adclientdef);
+		confSetVal("ad.admindef", $adadmindef);
+		
+		$initState = "running";
+		$backEnd = "AD";
+		
+		// and that should be it... i think cept im in a forked erg.. lets assume it works, need pain i do not.
+		
+		return true;
+	} else if($msg["backend"] == "IN") {
+		// this ones simpler
+		$backEnd = "IN";
+		createDB();
+		$initState = "running";
+		// then we need to "create user";
+		return true;
+	} else {
+		return false;
+	}
+}
+?>
\ No newline at end of file
diff --git a/gaas/lib/globalLib.php b/gaas/lib/globalLib.php
new file mode 100644
index 0000000..89e24b2
--- /dev/null
+++ b/gaas/lib/globalLib.php
@@ -0,0 +1,81 @@
+<?php
+
+// the global lib sets alot of global variables, its fairly unexciting
+$BASE_DIR = realpath(dirname(__FILE__)."/../../");
+global $BASE_DIR;
+
+// the tcp port number we use for comms
+$TCP_PORT_NUMBER = 21335;
+global $TCP_PORT_NUMBER;
+
+// the messages structure, used to extend gaas if needed
+define("MSG_AUTH_USER_TOKEN", 1);
+define("MSG_ADD_USER_TOKEN", 2);
+define("MSG_DELETE_USER", 3);
+define("MSG_AUTH_USER_PASSWORD", 4);
+define("MSG_SET_USER_PASSWORD", 5);
+define("MSG_SET_USER_REALNAME", 6);
+define("MSG_SET_USER_TOKEN", 7);
+define("MSG_SET_USER_TOKEN_TYPE", 8);
+define("MSG_GET_USERS", 9);
+define("MSG_GET_OTK_PNG", 10);
+define("MSG_GET_OTK_ID", 11);
+define("MSG_DELETE_USER_TOKEN", 12);
+define("MSG_SYNC_TOKEN", 13);
+define("MSG_GET_TOKEN_TYPE", 14);
+define("MSG_GET_RADIUS_CLIENTS", 15);
+define("MSG_REMOVE_RADIUS_CLIENT", 16);
+define("MSG_ADD_RADIUS_CLIENT", 17);
+define("MSG_STATUS", 18);
+define("MSG_INIT_SERVER", 19);
+
+// the gaasd call's $MESSAGE[<MSG>]_server() for the server side
+// and $MESSAGE[<msg>]_client() for the client side 
+
+$MESSAGES[MSG_AUTH_USER_TOKEN] = "gaasAuthUserToken";
+$MESSAGES[MSG_ADD_USER_TOKEN] = "gaasAddUserToken";
+$MESSAGES[MSG_DELETE_USER] = "gaasDeleteUser";
+$MESSAGES[MSG_AUTH_USER_PASSWORD] = "gaasAuthUserPass";
+$MESSAGES[MSG_SET_USER_PASSWORD] = "gaasSetUserPass";
+$MESSAGES[MSG_SET_USER_REALNAME] = "gaasSetUserRealName";
+$MESSAGES[MSG_SET_USER_TOKEN] = "gaasSetUserToken";
+$MESSAGES[MSG_SET_USER_TOKEN_TYPE] = "gaasSetUserTokenType";
+$MESSAGES[MSG_GET_USERS] = "gaasGetUsers";
+$MESSAGES[MSG_GET_OTK_PNG] = "gaasGetOTKPng";
+$MESSAGES[MSG_GET_OTK_ID] = "gaasGetOTKID";
+$MESSAGES[MSG_DELETE_USER_TOKEN] = "gaasDeleteUserToken";
+$MESSAGES[MSG_SYNC_TOKEN] = "gaasSyncToken";
+$MESSAGES[MSG_GET_TOKEN_TYPE] = "gaasGetTokenType";
+$MESSAGES[MSG_GET_RADIUS_CLIENTS] = "gaasGetRadiusClients";
+$MESSAGES[MSG_REMOVE_RADIUS_CLIENT] = "gaasRemoveRadiusClient";
+$MESSAGES[MSG_ADD_RADIUS_CLIENT] = "gaasAddRadiusClient";
+$MESSAGES[MSG_STATUS] = "gaasStatus";
+$MESSAGES[MSG_INIT_SERVER] = "gaasInitServer";
+global $MESSAGES;
+
+function generateRandomString($len)
+{
+	$str = "";
+	$strpos = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
+	
+	for($i=0; $i<$len; $i++) {
+		$str .= $strpos[rand(0, strlen($strpos)-1)];
+	}
+	
+	return $str;
+}
+
+function generateHexString($len)
+{
+	$str = "";
+	$strpos = "0123456789ABCDEF";
+	
+	for($i=0; $i<$len; $i++) {
+		$str .= $strpos[rand(0, strlen($strpos)-1)];
+	}
+	
+	return $str;
+}
+
+
+?>
\ No newline at end of file
-- 
1.7.0.4