wwwroot/backend/mysql/backend.inc

   1 <?php
   2 class nodes {
   3 // All mysql code should go here
   4 // Split into multiple files if needed
   5
   6 function processContent($node_content) { return processContent_hack($node_content); } //XXX TODO FIXME HACK
   7
   8 // Called for every node view. Updates node views, neurons,
   9 function update_nodes($user_id,$node_id,$referer_id) {
  10         global $node,$db,$error;
  11         $db->update("update nodes set node_views=node_views+1 where".
  12                      "node_id='".$node_id."'");
  13         if (is_numeric($referer_id) && ($referer_id)) {
  14                 $q="update neurons set synapse=synapse+1 where ".
  15                     "dst='".$node_id."' and src='$referer_id'";
  16                 $result=$db->update($q);
  17                 if (!$result) {
  18                         $q="insert into neurons set synapse_creator='".
  19                            $user_id."',dst='".$node_id.
  20                            "',src='$referer_id',synapse=1";
  21                         $db->query($q);
  22                 }
  23         }
  24
  25         // LEVENSHTEIN
  26
  27         // these 4 lines are not the source of kyberia lagging problems.
  28         // leave them. started on the 10.4.
  29         // data gained will be used for scientific purposes
  30         if ($user_id) {
  31                 $q="insert delayed into levenshtein set user_id='".
  32                     $user_id."',node_id='".$node_id."'";
  33                 $db->update($q);
  34         }
  35 }
  36
  37
  38 function putNode($what,$where,$checkpermissions=true) {
  39         global $db,$error,$error_messages;
  40         $user_id = $_SESSION['user_id'];
  41         if (!$user_id) {
  42                 $user_id=UBIK_ID;
  43         }
  44         if (!is_numeric($what) || !is_numeric($where)) {
  45                 $error=$error_messages['NUMERIC_NOT_NUMERIC'];
  46         }
  47
  48         $nodeshell = nodes::getNodeById($where,$user_id);
  49         $nodeshell_vector = $nodeshell['node_vector'];
  50
  51         if ($checkpermissions) {
  52                 $nodeshell_permissions = permissions::checkPerms($nodeshell);
  53                 if (!$nodeshell_permissions['w']) {
  54                         $error = $error_messages['WRITE_PERMISSION_ERROR'];
  55                         return false;
  56                 }
  57         }
  58
  59         $dst_vector = $nodeshell_vector.str_pad($chosen,VECTOR_CHARS,0,STR_PAD_LEFT);
  60         $q = "update neurons set synapse_created=NOW(),link='hard',synapse=synapse+1, dst_vector='$dst_vector' where src='$what' and dst='$where'";
  61         $result=$db->update($q);
  62
  63         if (!$result) $db->query("insert into neurons set synapse_creator='$user_id',synapse_created=NOW(), src='$what',dst='$where',dst_vector='$dst_vector',link='hard',synapse=1");
  64         $db->query("update nodes set lastdescendant_created=NOW(),node_children_count=node_children_count+1 where node_id='$where'");
  65 }
  66
  67 function addNode($params) {
  68         global $db,$node,$error,$error_messages;
  69         $parent_id=$params['node_parent'];
  70
  71         if ($params['flag']=='registration') $params['node_creator']=UBIK_ID;
  72
  73         if (!is_numeric($parent_id)) {
  74                 $parent_id=$node['node_id'];
  75         }
  76
  77         $parent_permissions=permissions::checkPerms($parent_id);
  78
  79         if (!$parent_permissions['w']) {
  80                 $error=$error_messages['WRITE_PERMISSION_ERROR'];
  81                 logger::log('add','error','WRITE_PERMISSION_ERROR');
  82                 return false;
  83         }
  84
  85
  86         $kset=$db->query("select user_k from users where user_id='$params[node_creator]'");
  87         $kset->next();
  88         $user_k=$kset->getString('user_k');
  89
  90         if (!$user_k && $params['node_creator']!=UBIK_ID) {
  91                 $error=$error_messages['K_SPENT'];
  92         }
  93
  94
  95
  96         $set=$db->query("select node_vector,node_children_count from nodes where node_id='$parent_id'");
  97         $set->next();
  98         $parent_vector=$set->getString('node_vector');
  99
 100         if ($set->getInt('node_children_count')>MAX_CHILDREN) {
 101                 $error=$error_messages['MAX_CHILDREN'];
 102                 return false;
 103         }
 104
 105         //working with external links
 106         $external_link=$params['external_link'];
 107
 108         $template_id=$params['template_id'];
 109         if (!is_numeric($template_id)) $template_id=DEFAULT_TEMPLATE_ID;
 110
 111         if(!isset($params['node_system_access'])) $params['node_system_access'] = $node['node_system_access'];
 112         if(!isset($params['node_external_access'])) $params['node_external_access'] = $node['node_external_access'];
 113
 114         $q="insert into nodes set
 115 node_name='".$params['node_name']."',
 116 node_external_access='".$params['node_external_access']."',
 117 node_system_access='".$params['node_system_access']."',
 118 node_creator='".$params['node_creator']."',
 119 template_id='".$template_id."',
 120 external_link='".$external_link."',
 121 node_parent='".$parent_id."',
 122 node_views=0,node_created=NOW(),
 123 node_content='".$params['node_content']."',
 124 node_vector='".$params['node_vector']."'";
 125         $db->query("start transaction");
 126         $db->query($q);
 127         $id=$db->getLastInsertId();
 128
 129 //node_content MyIsam only for FULLTEXT !!!
 130 //        $db->query("insert into node_content set node_id='$id',node_content='".$params['node_content']."'");
 131
 132         $new_id=str_pad($id,VECTOR_CHARS,"0",STR_PAD_LEFT);
 133         $new_vector=trim($parent_vector,"z").$new_id;
 134
 135         if ($params['flag']=='registration') $db->query("update nodes set node_system_access='public',node_external_access='yes',node_creator=$id where node_id=$id");
 136
 137         $db->query("update nodes set node_vector='$new_vector' where node_id='$id'");
 138         $db->query("update nodes set node_children_count=node_children_count+1 where node_id='$parent_id'");
 139
 140         $node_vector=trim(chunk_split($new_vector,VECTOR_CHARS,';'),';');
 141
 142         $ancestors=explode(";",$node_vector);
 143         foreach($ancestors as $key => $ancestor_id) {
 144                 if ($key) {
 145                         $ancestor_id=ltrim($ancestor_id,'0');
 146                         $db->query("update nodes set node_descendant_count=node_descendant_count+1,lastdescendant_created=NOW() where node_id='$ancestor_id'");
 147                 }
 148         }
 149         $db->query("update node_access set node_user_subchild_count=node_user_subchild_count+1 where node_id='$parent_id'");
 150         --$user_k;
 151         $db->query("update users set user_k='$user_k' where user_id='$params[node_creator]'");
 152         $db->query("commit");
 153         logger::log('add','ok',$id);
 154
 155         if ($_POST['code']) {
 156                 $params['node_creator']=UBIK_ID;
 157                 $params['node_parent']=WARNING_ZONE;
 158                 $params['node_name']="node $id added with code_parameter";
 159                 $params['node_content']="node <a href='/id/$id'>$id</a> added with code_parameter";
 160                 unset($_POST['code']);
 161                 nodes::addNode($params);
 162         }
 163
 164         return $id;
 165 }
 166
 167
 168 function getUserByLogin($login) {
 169         global $error, $error_messages;
 170         $q2="select user_id from users where login='".$login."'";
 171         $userset=$db->query($q2);
 172         $userset->next();
 173         $id=$userset->getString('user_id');
 174         if (is_numeric($id)) return $id;
 175         else {
 176                 $error = $error_messages['USER_NOT_FOUND'];
 177                 return false;
 178         }
 179 }
 180
 181 static function getNodeIdByName($name, $external_link=false) {
 182         global $db;
 183
 184         $qh = sprintf('select node_id from nodes where node_name = "%s"', mysql_real_escape_string($name));
 185         if ($external_link)
 186                 $qh .= sprintf(' and external_link="%s"', mysql_real_escape_string($external_link));
 187
 188         $set = $db->query($qh);
 189         $set->next();
 190         return $set->getString('node_id');
 191 }
 192
 193 function getNodeById($node_handle,$user_id, $table_name="nodes") {
 194         global $db, $error;
 195         $q="select length(concat($table_name.node_vector)) as
 196 vector_depth,$table_name.*,$table_name.node_creator as
 197 node_owner_id,creator.node_name as owner,node_access.*,$table_name.node_id as
 198 node_id,node_parent.node_name as node_parent_name
 199 from $table_name left join $table_name as creator on creator.node_id=$table_name.node_creator
 200 left join $table_name as node_parent on $table_name.node_parent=node_parent.node_id
 201 left join node_access on (node_access.node_id='$node_handle' and node_access.user_id='$user_id')
 202 where $table_name.node_id='$node_handle'";
 203
 204         $result=$db->query($q);
 205         if (!$result->next()) {
 206                 return false;
 207         }
 208         else {
 209                 $node=addBase36id($result->getRecord());
 210                 $node['node_vector']=trim($node['node_vector'],"z");
 211                 $ancestors=str_split($node['node_vector'],VECTOR_CHARS);
 212                 foreach ($ancestors as $ancestor) {
 213                         $node['ancestors'][]=array("name"=>"","link"=>ltrim($ancestor,"0"));
 214                 }
 215         }
 216         transport_process_node($node);
 217         return $node;
 218
 219 }
 220
 221
 222 function redirByName($node_handle) {
 223         global $db, $error;
 224         $user_id=$_SESSION['user_id'];
 225         $set=$db->query("select node_id from nodes where node_name='$node_handle' and node_creator='$user_id'");
 226         if ($set->next()) {
 227                 $node_id=$set->getString('node_id');
 228                 if (!empty($node_id)) {
 229                         return nodes::getNodeById($node_id,$_SESSION['user_id']);
 230                 }
 231
 232         }
 233         $set=$db->query("select node_id from nodes where node_name='$node_handle' ");
 234         $set->next();
 235         $node_id=$set->getString('node_id');
 236         if (!empty($node_id)) {
 237                 return nodes::getNodeById($node_id,$_SESSION['user_id']);
 238         }
 239
 240 }
 241
 242 function getNodesByName($node_handle) {
 243         global $db, $error;
 244         $q="select nodes.* from nodes where node_name='$node_handle%'";
 245
 246         $result=$db->query($q);
 247
 248         while ($result->next()){
 249                 $record[]=addBase36id($result->getRecord());
 250         }
 251         return $record;
 252
 253 }
 254
 255
 256
 257 function getChildrenNodes($orderby="desc",$offset=0,$limit=DEFAULT_LISTING_AMOUNT) {
 258         global $db, $error, $node;
 259         $node_handle=$node['node_id'];
 260
 261         $q="select users.*,nodes.* from nodes
 262 left join users on users.user_id=nodes.node_creator where
 263 node_parent='$node_handle' order by node_created $orderby LIMIT $offset,$limit";
 264         echo $q;
 265         $result=$db->query($q);
 266
 267         while ($result->next()) {
 268                 $array[]=addBase36id($result->getRecord());
 269         }
 270
 271         return $array;
 272
 273 }
 274
 275
 276 function getThreadedChildrenNodes($orderby="desc",$offset=0,$limit=DEFAULT_LISTING_AMOUNT) {
 277         global $db, $error, $node;
 278         $node_handle=$node['node_id'];
 279
 280         $q="select length(node_vector) as depth,users.login,nodes.* from nodes left join users on users.user_id=nodes.node_creator where  node_vector like '".$node['node_vector'].";".$node['node_id']."%' and node_type=3 order by concat(node_vector,';',nodes.node_id,';z') desc,depth LIMIT $offset,$limit";
 281
 282         $result=$db->query($q);
 283
 284         while ($result->next()) {
 285                 $children_array[]=addBase36id($result->getRecord());
 286         }
 287
 288         return $children_array;
 289
 290 }
 291
 292
 293
 294 function getNodeAccessData() {
 295         global $node,$db;
 296         $q="select users.login,node_access.* from node_access left join users on users.user_id=node_access.user_id where node_id='".$node['node_id']."' and node_permission!=''";
 297         $result=$db->query($q);
 298
 299         while ($result->next()) {
 300                 $access_data[]=$result->getRecord();
 301         }
 302
 303         return $access_data;
 304
 305 }
 306
 307
 308 // Simple internal function to set node parrent
 309
 310 function setParent($node_id,$parent_id) {
 311         global $db,$node,$error,$error_messages;
 312
 313         if (!is_numeric($parent_id)) {
 314                 return false;
 315         }
 316
 317         $q="select node_vector from nodes where node_id='$parent_id'";
 318         $set=$db->query($q);
 319         $set->next();
 320         $parent_vector=$set->getString('node_vector');
 321         $new_vector=$parent_vector.str_pad($node_id,VECTOR_CHARS,"0",STR_PAD_LEFT);
 322
 323         $q="update nodes set node_parent='$parent_id',node_vector='$new_vector' where node_id='$node_id'";
 324         $db->query($q);
 325
 326         return 0;
 327 }
 328
 329 // Get nodes sorted by weight_k specific to user
 330
 331 function getKNeurons($user_id,$interval) {
 332         global $db,$node,$error,$error_messages;
 333
 334         $q="call k_neurons('$user_id','$interval')";
 335         $set=$db->query($q);
 336
 337         while ($set->next()) {
 338                 $k_array[]=$set->getRecord();
 339         }
 340
 341         return $k_array;
 342 }
 343
 344 // setSynapse
 345
 346 // Set synapse weight.
 347 // If synapse does not exists, create a new one.
 348 // Secure.
 349 // Returns true on sucess, otherwise false.
 350
 351 function setSynapse($params){
 352         global $db,$node,$error,$error_messages;
 353
 354         // security check
 355         if ((!is_numeric($params['src']))
 356                 or (!is_numeric($params['dst']))
 357                 or (!is_numeric($params['weight']))) {
 358
 359                 return false;
 360         }
 361
 362         $src=$params['src'];
 363         $dst=$params['dst'];
 364         $weight=$params['weight'];
 365
 366         // weight could be only positive
 367         if ( $weight < 0) {
 368                 return false;
 369         }
 370
 371         // if already exists
 372         $q="select count(src) from neurons where dst ='$dst' and src = '$src'";
 373         $set=$db->query($q);
 374         $set->next();
 375         $isrc=$set->getString('count(src)');
 376
 377         if ( $isrc > 0 ) {
 378                 $q="update neurons set synapse_weight='$weight'
 379                         where dst = '$dst' and src = '$src'";
 380         } else {
 381                 // FIXME no vector set
 382                 $q="insert into neurons values('$weight','$dst','$src',0,'synapse',
 383                                                 CURRENT_TIMESTAMP(),now(),NULL,$src)";
 384         }
 385         $set=$db->query($q);
 386
 387         return true;
 388 }
 389
 390 // getSynapseWeight
 391
 392 // If synapse does not exists, weight is 1
 393 // Secure.
 394 // Returns synapse weight (from user to node)
 395
 396 function getSynapseWeight($user_id,$node_id){
 397         global $db;
 398
 399         if (!is_numeric($user_id))
 400                 { return -1; }
 401         if (!is_numeric($node_id))
 402                 { return -1; }
 403
 404         $set=$db->query("select synapse_weight from neurons where src =".
 405                 $user_id." and dst = ".$node_id." and link='synapse'");
 406
 407         $set->next();
 408         $synapse_weight=$set->getString('synapse_weight');
 409
 410         if (! ($synapse_weight) ) { $synapse_weight = 1;}
 411
 412         return $synapse_weight;
 413
 414 }
 415 }
 416
 417 ?>