Cache system rewritten, thanks to profi-concept's hints of including not evaluating it
[mailer.git] / inc / libs / cache_functions.php
index 88b506223d9f6fdd1ecf162e97de9a05ddf664ad..d5b3639477adb24ff08b65b35794b764c33a3bc3 100644 (file)
@@ -65,10 +65,10 @@ class mxchange_cache
                // Check if path exists
                if ((is_dir($path)) && (!$tested)) {
                        // Check if we can create a file inside the path
-                       @touch($path."dummy.tmp", 'w');
+                       touch($path."dummy.tmp", 'w');
                        if (FILE_READABLE($path."dummy.tmp")) {
                                // Yes, we can do. So let's remove it
-                               @unlink($path."dummy.tmp");
+                               unlink($path."dummy.tmp");
 
                                // Is there a .htaccess file?
                                if (FILE_READABLE($path.".htaccess")) {
@@ -116,7 +116,10 @@ class mxchange_cache
                if (($status) && ((time() - $ctime) >= $this->update_interval)) {
                        // Ok, we need an update!
                        $status = false;
-               } // END - if
+               } elseif ($status) {
+                       // Check on 'cache' extension
+                       $status = $this->ext_version_matches("cache");
+               }
 
                // Return status
                return $status;
@@ -126,14 +129,14 @@ class mxchange_cache
                // This will destory an existing cache file!
                if ($this->ret == "done") {
                        // Create file
-                       if (FILE_READABLE($this->cache_inc)) @chmod($this->cache_inc, 0666);
-                       $fp = @fopen($this->cache_inc, 'w') or mxchange_die("Cannot write to cache ".$this->cache_inc." !");
+                       if (FILE_READABLE($this->cache_inc)) chmod($this->cache_inc, 0666);
+                       $this->cache_pointer = fopen($this->cache_inc, 'w') or mxchange_die("Cannot write to cache ".$this->cache_inc." !");
 
                        // Begin of cache file
-                       fwrite($fp, "\$ARRAY = \"".$array."\";\n\n");
+                       fwrite($this->cache_pointer, "<?php\n\$ARRAY = \"".$array."\";\n\n");
 
-                       // Remember file pointer
-                       $this->cache_pointer = $fp;
+                       // Add default depency
+                       $this->store_extension_version("cache");
                } else {
                        // Cannot create file
                        ADD_FATAL(__FILE__."(<font color=\"#0000aa\">".__LINE__."</font>): ".CACHE_PROBLEMS_DETECTED);
@@ -162,7 +165,7 @@ class mxchange_cache
                                }
 
                                // Write cache line to file
-                               @fwrite($this->cache_pointer, $this->add_raw_row($k, $v));
+                               fwrite($this->cache_pointer, $this->add_raw_row($k, $v));
                        }
                } else {
                        // Cannot create file
@@ -170,29 +173,34 @@ class mxchange_cache
                }
        }
 
-       function cache_close()
-       {
+       function cache_close() {
                // Quit function when no pointer is set
                if (empty($this->cache_pointer)) return;
-               if ($this->cache_pointer)
-               {
+               if (is_resource($this->cache_pointer)) {
+                       // Write footer
+                       fwrite($this->cache_pointer, "?>\n");
+
                        // Close file add destroy handler
-                       @fclose($this->cache_pointer);
+                       fclose($this->cache_pointer);
 
                        // Set rights
-                       if (FILE_READABLE($this->cache_inc)) @chmod($this->cache_inc, 0666);
+                       if (FILE_READABLE($this->cache_inc)) chmod($this->cache_inc, 0666);
 
                        // Remove pointer
                        unset($this->cache_pointer);
-               }
-               else
-               {
+               } else {
                        // Cannot create file
                        ADD_FATAL(__FILE__."(<font color=\"#0000aa\">".__LINE__."</font>): ".CACHE_PROBLEMS_DETECTED);
                }
        }
 
        function cache_load() {
+               // Is the cache already loaded?
+               if (isset($this->cache_data[$this->cache_file])) {
+                       // Return it's content!
+                       return $this->cache_data[$this->cache_file];
+               } // END - if
+
                // Is the cache file there?
                if (FILE_READABLE($this->cache_inc)) {
                        // Prepare temporary array
@@ -200,11 +208,9 @@ class mxchange_cache
                        $cache_version = null;
 
                        // Load cache file
-                       $this->cache_data[$this->cache_file] = implode("", file($this->cache_inc));
-
-                       // Execute cache file
-                       eval($this->cache_data[$this->cache_file]);
+                       require_once($this->cache_inc);
 
+                       // Is there an array?
                        if (is_array($data)) {
                                // Cache data
                                $this->cache_data[$this->cache_file] = $data;
@@ -238,7 +244,7 @@ class mxchange_cache
                // Is the cache file there?
                if (FILE_READABLE($this->cache_inc)) {
                        // Remove cache file from system
-                       @unlink($this->cache_inc);
+                       unlink($this->cache_inc);
                        if (!FILE_READABLE($this->cache_inc)) {
                                // Close cache automatically (we don't need it anymore!)
                                $this->cache_close();
@@ -268,27 +274,13 @@ class mxchange_cache
                                }
 
                                // Flush array to cache file
-                               $fp = fopen($this->cache_inc, 'w');
-                               fwrite($fp, "\$ARRAY = \"".$ARRAY."\";\n");
-                               foreach ($dummy as $k => $v) {
-                                       if (is_array($v)) {
-                                               // Multi line(s) found
-                                               $LINE = "";
-                                               foreach($v as $k2 => $v2) {
-                                                       // Put every array element in a row...
-                                                       $LINE .= $this->add_raw_row($k, $v2);
-                                               }
-                                       } else {
-                                               // Single line found
-                                               $LINE = $this->add_raw_row($k, $v);
-                                       }
+                               $this->cache_init($ARRAY);
 
-                                       // Write line(s)
-                                       fwrite($fp, $LINE);
-                               }
+                               // Write array out
+                               $this->cache_write_array($dummy);
 
                                // Close cache file
-                               fclose($fp);
+                               $this->cache_close();
                        }
                } else {
                        // Cannot write to cache!
@@ -296,10 +288,33 @@ class mxchange_cache
                }
        }
 
+       function cache_write_array ($array) {
+               if (is_resource($this->cache_pointer)) {
+                       foreach ($array as $k => $v) {
+                               if (is_array($v)) {
+                                       // Multi line(s) found
+                                       $LINE = "";
+                                       foreach($v as $k2 => $v2) {
+                                               // Put every array element in a row...
+                                               $LINE .= $this->add_raw_row($k, $v2);
+                                       }
+                               } else {
+                                       // Single line found
+                                       $LINE = $this->add_raw_row($k, $v);
+                               }
+
+                               // Write line(s)
+                               fwrite($this->cache_pointer, $LINE);
+                       } // END - foreach
+               } else {
+                       // Cannot write array!
+                       ADD_FATAL(__FILE__."(<font color=\"#0000aa\">".__LINE__."</font>): ".CACHE_PROBLEMS_DETECTED);
+               }
+       }
+
        function cache_replace($search, $replace, $search_key, $array) {
                global $ARRAY;
-               if ((FILE_READABLE($this->cache_inc)) && (is_writeable($this->cache_inc)))
-               {
+               if ((FILE_READABLE($this->cache_inc)) && (is_writeable($this->cache_inc))) {
                        // Load cache into dummy array
                        $dummy = $this->cache_load();
 
@@ -319,27 +334,13 @@ class mxchange_cache
                                        }
 
                                        // Flush array to cache file
-                                       $fp = fopen($this->cache_inc, 'w');
-                                       fwrite($fp, "\$dummy = \"".$ARRAY."\";\n");
-                                       foreach ($dummy as $k => $v) {
-                                               if (is_array($v)) {
-                                                       // Multi line(s) found
-                                                       $LINE = "";
-                                                       foreach($v as $k2 => $v2) {
-                                                               // Put every array element in a row...
-                                                               $LINE .= $this->add_raw_row($k, $v2);
-                                                       }
-                                               } else {
-                                                       // Single line found
-                                                       $LINE = $this->add_raw_row($k, $v);
-                                               }
+                                       $this->cache_init($ARRAY);
 
-                                               // Write line(s)
-                                               fwrite($fp, $LINE);
-                                       }
+                                       // Write array out
+                                       $this->cache_write_array($dummy);
 
                                        // Close cache file
-                                       fclose($fp);
+                                       $this->cache_close();
                                }
                        }
                } else {
@@ -355,7 +356,7 @@ class mxchange_cache
                        $ext_ver = GET_EXT_VERSION($ext_name);
 
                        // Write cache line to file
-                       @fwrite($this->cache_pointer, "\$cache_version['".$ext_name."'] = \"".$ext_ver."\";\n");
+                       fwrite($this->cache_pointer, "\$cache_version['".$ext_name."'] = \"".$ext_ver."\";\n");
                } else {
                        // Cannot create file
                        ADD_FATAL(__FILE__."(<font color=\"#0000aa\">".__LINE__."</font>): ".CACHE_PROBLEMS_DETECTED);