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  1. #1
    Regular Coder
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    Jan 2006
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    AJAX chat, not posting certain characters

    Ok, so im not very good with AJAX, so i downloaded a script for an AJAX chat, instead of making one. My problem is that it filters out characters like :, +, etc.. this makes it difficult to put smilies in... my code is this:

    PHP Code:
    <?php    
    if (!isset($SAJAX_INCLUDED)) {

        
    /*  
         * GLOBALS AND DEFAULTS
         *
         */ 
        
    $GLOBALS['sajax_version'] = '0.12';    
        
    $GLOBALS['sajax_debug_mode'] = 0;
        
    $GLOBALS['sajax_export_list'] = array();
        
    $GLOBALS['sajax_request_type'] = 'GET';
        
    $GLOBALS['sajax_remote_uri'] = '';
        
    $GLOBALS['sajax_failure_redirect'] = '';
        
        
    /*
         * CODE
         *
         */ 
         
        //
        // Initialize the Sajax library.
        //
        
    function sajax_init() {
        }
        
        
    //
        // Helper function to return the script's own URI. 
        // 
        
    function sajax_get_my_uri() {
            return 
    $_SERVER["REQUEST_URI"];
        }
        
    $sajax_remote_uri sajax_get_my_uri();
        
        
    //
        // Helper function to return an eval()-usable representation
        // of an object in JavaScript.
        // 
        
    function sajax_get_js_repr($value) {
            
    $type gettype($value);
            
            if (
    $type == "boolean") {
                return (
    $value) ? "Boolean(true)" "Boolean(false)";
            } 
            elseif (
    $type == "integer") {
                return 
    "parseInt($value)";
            } 
            elseif (
    $type == "double") {
                return 
    "parseFloat($value)";
            } 
            elseif (
    $type == "array" || $type == "object" ) {
                
    //
                // XXX Arrays with non-numeric indices are not
                // permitted according to ECMAScript, yet everyone
                // uses them.. We'll use an object.
                // 
                
    $s "{ ";
                if (
    $type == "object") {
                    
    $value get_object_vars($value);
                } 
                foreach (
    $value as $k=>$v) {
                    
    $esc_key sajax_esc($k);
                    if (
    is_numeric($k)) 
                        
    $s .= "$k: " sajax_get_js_repr($v) . ", ";
                    else
                        
    $s .= "\"$esc_key\": " sajax_get_js_repr($v) . ", ";
                }
                if (
    count($value))
                    
    $s substr($s0, -2);
                return 
    $s " }";
            } 
            else {
                
    $esc_val sajax_esc($value);
                
    $s "'$esc_val'";
                return 
    $s;
            }
        }

        function 
    sajax_handle_client_request() {
            global 
    $sajax_export_list;
            
            
    $mode "";
            
            if (! empty(
    $_GET["rs"])) 
                
    $mode "get";
            
            if (!empty(
    $_POST["rs"]))
                
    $mode "post";
                
            if (empty(
    $mode)) 
                return;

            
    $target "";
            
            if (
    $mode == "get") {
                
    // Bust cache in the head
                
    header ("Expires: Mon, 26 Jul 1997 05:00:00 GMT");    // Date in the past
                
    header ("Last-Modified: " gmdate("D, d M Y H:i:s") . " GMT");
                
    // always modified
                
    header ("Cache-Control: no-cache, must-revalidate");  // HTTP/1.1
                
    header ("Pragma: no-cache");                          // HTTP/1.0
                
    $func_name $_GET["rs"];
                if (! empty(
    $_GET["rsargs"])) 
                    
    $args $_GET["rsargs"];
                else
                    
    $args = array();
            }
            else {
                
    $func_name $_POST["rs"];
                if (! empty(
    $_POST["rsargs"])) 
                    
    $args $_POST["rsargs"];
                else
                    
    $args = array();
            }
            
            if (! 
    in_array($func_name$sajax_export_list))
                echo 
    "-:$func_name not callable";
            else {
                echo 
    "+:";
                
    $result call_user_func_array($func_name$args);
                echo 
    "var res = " trim(sajax_get_js_repr($result)) . "; res;";
            }
            exit;
        }
        
        function 
    sajax_get_common_js() {
            global 
    $sajax_debug_mode;
            global 
    $sajax_request_type;
            global 
    $sajax_remote_uri;
            global 
    $sajax_failure_redirect;
            
            
    $t strtoupper($sajax_request_type);
            if (
    $t != "" && $t != "GET" && $t != "POST"
                return 
    "// Invalid type: $t.. \n\n";
            
            
    ob_start();
            
    ?>
            
            // remote scripting library
            // (c) copyright 2005 modernmethod, inc
            var sajax_debug_mode = <?php echo $sajax_debug_mode "true" "false"?>;
            var sajax_request_type = "<?php echo $t?>";
            var sajax_target_id = "";
            var sajax_failure_redirect = "<?php echo $sajax_failure_redirect?>";
            
            function sajax_debug(text) {
                if (sajax_debug_mode)
                    alert(text);
            }
            
             function sajax_init_object() {
                 sajax_debug("sajax_init_object() called..")
                 
                 var A;
                 
                 var msxmlhttp = new Array(
                    'Msxml2.XMLHTTP.5.0',
                    'Msxml2.XMLHTTP.4.0',
                    'Msxml2.XMLHTTP.3.0',
                    'Msxml2.XMLHTTP',
                    'Microsoft.XMLHTTP');
                for (var i = 0; i < msxmlhttp.length; i++) {
                    try {
                        A = new ActiveXObject(msxmlhttp[i]);
                    } catch (e) {
                        A = null;
                    }
                }
                 
                if(!A && typeof XMLHttpRequest != "undefined")
                    A = new XMLHttpRequest();
                if (!A)
                    sajax_debug("Could not create connection object.");
                return A;
            }
            
            var sajax_requests = new Array();
            
            function sajax_cancel() {
                for (var i = 0; i < sajax_requests.length; i++) 
                    sajax_requests[i].abort();
            }
            
            function sajax_do_call(func_name, args) {
                var i, x, n;
                var uri;
                var post_data;
                var target_id;
                
                sajax_debug("in sajax_do_call().." + sajax_request_type + "/" + sajax_target_id);
                target_id = sajax_target_id;
                if (typeof(sajax_request_type) == "undefined" || sajax_request_type == "") 
                    sajax_request_type = "GET";
                
                uri = "<?php echo $sajax_remote_uri?>";
                if (sajax_request_type == "GET") {
                
                    if (uri.indexOf("?") == -1) 
                        uri += "?rs=" + escape(func_name);
                    else
                        uri += "&rs=" + escape(func_name);
                    uri += "&rst=" + escape(sajax_target_id);
                    uri += "&rsrnd=" + new Date().getTime();
                    
                    for (i = 0; i < args.length-1; i++) 
                        uri += "&rsargs[]=" + escape(args[i]);

                    post_data = null;
                } 
                else if (sajax_request_type == "POST") {
                    post_data = "rs=" + escape(func_name);
                    post_data += "&rst=" + escape(sajax_target_id);
                    post_data += "&rsrnd=" + new Date().getTime();
                    
                    for (i = 0; i < args.length-1; i++) 
                        post_data = post_data + "&rsargs[]=" + escape(args[i]);
                }
                else {
                    alert("Illegal request type: " + sajax_request_type);
                }
                
                x = sajax_init_object();
                if (x == null) {
                    if (sajax_failure_redirect != "") {
                        location.href = sajax_failure_redirect;
                        return false;
                    } else {
                        sajax_debug("NULL sajax object for user agent:\n" + navigator.userAgent);
                        return false;
                    }
                } else {
                    x.open(sajax_request_type, uri, true);
                    // window.open(uri);
                    
                    sajax_requests[sajax_requests.length] = x;
                    
                    if (sajax_request_type == "POST") {
                        x.setRequestHeader("Method", "POST " + uri + " HTTP/1.1");
                        x.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
                    }
                
                    x.onreadystatechange = function() {
                        if (x.readyState != 4) 
                            return;

                        sajax_debug("received " + x.responseText);
                    
                        var status;
                        var data;
                        var txt = x.responseText.replace(/^\s*|\s*$/g,"");
                        status = txt.charAt(0);
                        data = txt.substring(2);

                        if (status == "") {
                            // let's just assume this is a pre-response bailout and let it slide for now
                        } else if (status == "-") 
                            alert("Error: " + data);
                        else {
                            if (target_id != "") 
                                document.getElementById(target_id).innerHTML = eval(data);
                            else {
                                try {
                                    var callback;
                                    var extra_data = false;
                                    if (typeof args[args.length-1] == "object") {
                                        callback = args[args.length-1].callback;
                                        extra_data = args[args.length-1].extra_data;
                                    } else {
                                        callback = args[args.length-1];
                                    }
                                    callback(eval(data), extra_data);
                                } catch (e) {
                                    sajax_debug("Caught error " + e + ": Could not eval " + data );
                                }
                            }
                        }
                    }
                }
                
                sajax_debug(func_name + " uri = " + uri + "/post = " + post_data);
                x.send(post_data);
                sajax_debug(func_name + " waiting..");
                delete x;
                return true;
            }
            
            <?php
            $html 
    ob_get_contents();
            
    ob_end_clean();
            return 
    $html;
        }
        
        function 
    sajax_show_common_js() {
            echo 
    sajax_get_common_js();
        }
        
        
    // javascript escape a value
        
    function sajax_esc($val)
        {
            
    $val str_replace("\\""\\\\"$val);
            
    $val str_replace("\r""\\r"$val);
            
    $val str_replace("\n""\\n"$val);
            
    $val str_replace("'""\\'"$val);
            return 
    str_replace('"''\\"'$val);
        }

        function 
    sajax_get_one_stub($func_name) {
            
    ob_start();    
            
    ?>
            
            // wrapper for <?php echo $func_name?>
            
            function x_<?php echo $func_name?>() {
                sajax_do_call("<?php echo $func_name?>",
                    x_<?php echo $func_name?>.arguments);
            }
            
            <?php
            $html 
    ob_get_contents();
            
    ob_end_clean();
            return 
    $html;
        }
        
        function 
    sajax_show_one_stub($func_name) {
            echo 
    sajax_get_one_stub($func_name);
        }
        
        function 
    sajax_export() {
            global 
    $sajax_export_list;
            
            
    $n func_num_args();
            for (
    $i 0$i $n$i++) {
                
    $sajax_export_list[] = func_get_arg($i);
            }
        }
        
        
    $sajax_js_has_been_shown 0;
        function 
    sajax_get_javascript()
        {
            global 
    $sajax_js_has_been_shown;
            global 
    $sajax_export_list;
            
            
    $html "";
            if (! 
    $sajax_js_has_been_shown) {
                
    $html .= sajax_get_common_js();
                
    $sajax_js_has_been_shown 1;
            }
            foreach (
    $sajax_export_list as $func) {
                
    $html .= sajax_get_one_stub($func);
            }
            return 
    $html;
        }
        
        function 
    sajax_show_javascript()
        {
            echo 
    sajax_get_javascript();
        }

        
        
    $SAJAX_INCLUDED 1;
    }
    ?>
    If you could let me know where this is taking place, and what to do to fix it, i would greatly appreciate it.

  • #2
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    someone please help

  • #3
    New Coder
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    Could you post the other file in the script, the actual chat part? The file you posted is just the AJAX framework. I don't think the problem is in there.


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