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1 <?php |
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2 /** |
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3 * WordPress environment setup class. |
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4 * |
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5 * @package WordPress |
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6 * @since 2.0.0 |
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7 */ |
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8 class WP { |
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9 /** |
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10 * Public query variables. |
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11 * |
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12 * Long list of public query variables. |
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13 * |
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14 * @since 2.0.0 |
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15 * @access public |
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16 * @var array |
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17 */ |
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18 var $public_query_vars = array('m', 'p', 'posts', 'w', 'cat', 'withcomments', 'withoutcomments', 's', 'search', 'exact', 'sentence', 'calendar', 'page', 'paged', 'more', 'tb', 'pb', 'author', 'order', 'orderby', 'year', 'monthnum', 'day', 'hour', 'minute', 'second', 'name', 'category_name', 'tag', 'feed', 'author_name', 'static', 'pagename', 'page_id', 'error', 'comments_popup', 'attachment', 'attachment_id', 'subpost', 'subpost_id', 'preview', 'robots', 'taxonomy', 'term', 'cpage', 'post_type'); |
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19 |
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20 /** |
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21 * Private query variables. |
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22 * |
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23 * Long list of private query variables. |
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24 * |
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25 * @since 2.0.0 |
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26 * @var array |
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27 */ |
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28 var $private_query_vars = array( 'offset', 'posts_per_page', 'posts_per_archive_page', 'showposts', 'nopaging', 'post_type', 'post_status', 'category__in', 'category__not_in', 'category__and', 'tag__in', 'tag__not_in', 'tag__and', 'tag_slug__in', 'tag_slug__and', 'tag_id', 'post_mime_type', 'perm', 'comments_per_page', 'post__in', 'post__not_in', 'post_parent__in', 'post_parent__not_in' ); |
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29 |
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30 /** |
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31 * Extra query variables set by the user. |
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32 * |
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33 * @since 2.1.0 |
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34 * @var array |
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35 */ |
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36 var $extra_query_vars = array(); |
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37 |
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38 /** |
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39 * Query variables for setting up the WordPress Query Loop. |
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40 * |
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41 * @since 2.0.0 |
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42 * @var array |
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43 */ |
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44 var $query_vars; |
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45 |
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46 /** |
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47 * String parsed to set the query variables. |
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48 * |
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49 * @since 2.0.0 |
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50 * @var string |
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51 */ |
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52 var $query_string; |
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53 |
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54 /** |
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55 * Permalink or requested URI. |
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56 * |
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57 * @since 2.0.0 |
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58 * @var string |
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59 */ |
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60 var $request; |
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61 |
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62 /** |
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63 * Rewrite rule the request matched. |
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64 * |
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65 * @since 2.0.0 |
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66 * @var string |
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67 */ |
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68 var $matched_rule; |
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69 |
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70 /** |
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71 * Rewrite query the request matched. |
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72 * |
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73 * @since 2.0.0 |
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74 * @var string |
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75 */ |
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76 var $matched_query; |
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77 |
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78 /** |
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79 * Whether already did the permalink. |
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80 * |
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81 * @since 2.0.0 |
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82 * @var bool |
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83 */ |
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84 var $did_permalink = false; |
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85 |
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86 /** |
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87 * Add name to list of public query variables. |
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88 * |
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89 * @since 2.1.0 |
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90 * |
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91 * @param string $qv Query variable name. |
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92 */ |
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93 function add_query_var($qv) { |
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94 if ( !in_array($qv, $this->public_query_vars) ) |
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95 $this->public_query_vars[] = $qv; |
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96 } |
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97 |
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98 /** |
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99 * Set the value of a query variable. |
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100 * |
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101 * @since 2.3.0 |
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102 * |
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103 * @param string $key Query variable name. |
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104 * @param mixed $value Query variable value. |
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105 */ |
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106 function set_query_var($key, $value) { |
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107 $this->query_vars[$key] = $value; |
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108 } |
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109 |
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110 /** |
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111 * Parse request to find correct WordPress query. |
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112 * |
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113 * Sets up the query variables based on the request. There are also many |
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114 * filters and actions that can be used to further manipulate the result. |
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115 * |
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116 * @since 2.0.0 |
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117 * |
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118 * @param array|string $extra_query_vars Set the extra query variables. |
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119 */ |
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120 function parse_request($extra_query_vars = '') { |
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121 global $wp_rewrite; |
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122 |
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123 if ( ! apply_filters( 'do_parse_request', true, $this, $extra_query_vars ) ) |
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124 return; |
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125 |
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126 $this->query_vars = array(); |
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127 $post_type_query_vars = array(); |
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128 |
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129 if ( is_array($extra_query_vars) ) |
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130 $this->extra_query_vars = & $extra_query_vars; |
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131 else if (! empty($extra_query_vars)) |
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132 parse_str($extra_query_vars, $this->extra_query_vars); |
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133 |
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134 // Process PATH_INFO, REQUEST_URI, and 404 for permalinks. |
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135 |
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136 // Fetch the rewrite rules. |
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137 $rewrite = $wp_rewrite->wp_rewrite_rules(); |
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138 |
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139 if ( ! empty($rewrite) ) { |
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140 // If we match a rewrite rule, this will be cleared. |
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141 $error = '404'; |
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142 $this->did_permalink = true; |
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143 |
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144 $pathinfo = isset( $_SERVER['PATH_INFO'] ) ? $_SERVER['PATH_INFO'] : ''; |
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145 list( $pathinfo ) = explode( '?', $pathinfo ); |
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146 $pathinfo = str_replace( "%", "%25", $pathinfo ); |
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147 |
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148 list( $req_uri ) = explode( '?', $_SERVER['REQUEST_URI'] ); |
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149 $self = $_SERVER['PHP_SELF']; |
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150 $home_path = trim( parse_url( home_url(), PHP_URL_PATH ), '/' ); |
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151 |
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152 // Trim path info from the end and the leading home path from the |
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153 // front. For path info requests, this leaves us with the requesting |
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154 // filename, if any. For 404 requests, this leaves us with the |
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155 // requested permalink. |
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156 $req_uri = str_replace($pathinfo, '', $req_uri); |
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157 $req_uri = trim($req_uri, '/'); |
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158 $req_uri = preg_replace("|^$home_path|i", '', $req_uri); |
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159 $req_uri = trim($req_uri, '/'); |
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160 $pathinfo = trim($pathinfo, '/'); |
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161 $pathinfo = preg_replace("|^$home_path|i", '', $pathinfo); |
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162 $pathinfo = trim($pathinfo, '/'); |
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163 $self = trim($self, '/'); |
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164 $self = preg_replace("|^$home_path|i", '', $self); |
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165 $self = trim($self, '/'); |
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166 |
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167 // The requested permalink is in $pathinfo for path info requests and |
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168 // $req_uri for other requests. |
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169 if ( ! empty($pathinfo) && !preg_match('|^.*' . $wp_rewrite->index . '$|', $pathinfo) ) { |
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170 $request = $pathinfo; |
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171 } else { |
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172 // If the request uri is the index, blank it out so that we don't try to match it against a rule. |
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173 if ( $req_uri == $wp_rewrite->index ) |
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174 $req_uri = ''; |
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175 $request = $req_uri; |
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176 } |
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177 |
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178 $this->request = $request; |
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179 |
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180 // Look for matches. |
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181 $request_match = $request; |
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182 if ( empty( $request_match ) ) { |
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183 // An empty request could only match against ^$ regex |
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184 if ( isset( $rewrite['$'] ) ) { |
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185 $this->matched_rule = '$'; |
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186 $query = $rewrite['$']; |
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187 $matches = array(''); |
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188 } |
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189 } else { |
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190 foreach ( (array) $rewrite as $match => $query ) { |
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191 // If the requesting file is the anchor of the match, prepend it to the path info. |
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192 if ( ! empty($req_uri) && strpos($match, $req_uri) === 0 && $req_uri != $request ) |
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193 $request_match = $req_uri . '/' . $request; |
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194 |
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195 if ( preg_match("#^$match#", $request_match, $matches) || |
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196 preg_match("#^$match#", urldecode($request_match), $matches) ) { |
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197 |
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198 if ( $wp_rewrite->use_verbose_page_rules && preg_match( '/pagename=\$matches\[([0-9]+)\]/', $query, $varmatch ) ) { |
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199 // this is a verbose page match, lets check to be sure about it |
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200 if ( ! get_page_by_path( $matches[ $varmatch[1] ] ) ) |
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201 continue; |
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202 } |
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203 |
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204 // Got a match. |
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205 $this->matched_rule = $match; |
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206 break; |
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207 } |
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208 } |
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209 } |
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210 |
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211 if ( isset( $this->matched_rule ) ) { |
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212 // Trim the query of everything up to the '?'. |
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213 $query = preg_replace("!^.+\?!", '', $query); |
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214 |
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215 // Substitute the substring matches into the query. |
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216 $query = addslashes(WP_MatchesMapRegex::apply($query, $matches)); |
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217 |
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218 $this->matched_query = $query; |
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219 |
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220 // Parse the query. |
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221 parse_str($query, $perma_query_vars); |
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222 |
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223 // If we're processing a 404 request, clear the error var since we found something. |
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224 if ( '404' == $error ) |
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225 unset( $error, $_GET['error'] ); |
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226 } |
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227 |
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228 // If req_uri is empty or if it is a request for ourself, unset error. |
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229 if ( empty($request) || $req_uri == $self || strpos($_SERVER['PHP_SELF'], 'wp-admin/') !== false ) { |
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230 unset( $error, $_GET['error'] ); |
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231 |
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232 if ( isset($perma_query_vars) && strpos($_SERVER['PHP_SELF'], 'wp-admin/') !== false ) |
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233 unset( $perma_query_vars ); |
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234 |
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235 $this->did_permalink = false; |
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236 } |
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237 } |
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238 |
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239 $this->public_query_vars = apply_filters('query_vars', $this->public_query_vars); |
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240 |
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241 foreach ( get_post_types( array(), 'objects' ) as $post_type => $t ) |
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242 if ( $t->query_var ) |
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243 $post_type_query_vars[$t->query_var] = $post_type; |
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244 |
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245 foreach ( $this->public_query_vars as $wpvar ) { |
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246 if ( isset( $this->extra_query_vars[$wpvar] ) ) |
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247 $this->query_vars[$wpvar] = $this->extra_query_vars[$wpvar]; |
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248 elseif ( isset( $_POST[$wpvar] ) ) |
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249 $this->query_vars[$wpvar] = $_POST[$wpvar]; |
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250 elseif ( isset( $_GET[$wpvar] ) ) |
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251 $this->query_vars[$wpvar] = $_GET[$wpvar]; |
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252 elseif ( isset( $perma_query_vars[$wpvar] ) ) |
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253 $this->query_vars[$wpvar] = $perma_query_vars[$wpvar]; |
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254 |
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255 if ( !empty( $this->query_vars[$wpvar] ) ) { |
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256 if ( ! is_array( $this->query_vars[$wpvar] ) ) { |
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257 $this->query_vars[$wpvar] = (string) $this->query_vars[$wpvar]; |
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258 } else { |
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259 foreach ( $this->query_vars[$wpvar] as $vkey => $v ) { |
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260 if ( !is_object( $v ) ) { |
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261 $this->query_vars[$wpvar][$vkey] = (string) $v; |
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262 } |
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263 } |
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264 } |
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265 |
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266 if ( isset($post_type_query_vars[$wpvar] ) ) { |
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267 $this->query_vars['post_type'] = $post_type_query_vars[$wpvar]; |
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268 $this->query_vars['name'] = $this->query_vars[$wpvar]; |
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269 } |
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270 } |
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271 } |
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272 |
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273 // Convert urldecoded spaces back into + |
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274 foreach ( get_taxonomies( array() , 'objects' ) as $taxonomy => $t ) |
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275 if ( $t->query_var && isset( $this->query_vars[$t->query_var] ) ) |
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276 $this->query_vars[$t->query_var] = str_replace( ' ', '+', $this->query_vars[$t->query_var] ); |
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277 |
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278 // Limit publicly queried post_types to those that are publicly_queryable |
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279 if ( isset( $this->query_vars['post_type']) ) { |
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280 $queryable_post_types = get_post_types( array('publicly_queryable' => true) ); |
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281 if ( ! is_array( $this->query_vars['post_type'] ) ) { |
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282 if ( ! in_array( $this->query_vars['post_type'], $queryable_post_types ) ) |
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283 unset( $this->query_vars['post_type'] ); |
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284 } else { |
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285 $this->query_vars['post_type'] = array_intersect( $this->query_vars['post_type'], $queryable_post_types ); |
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286 } |
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287 } |
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288 |
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289 foreach ( (array) $this->private_query_vars as $var) { |
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290 if ( isset($this->extra_query_vars[$var]) ) |
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291 $this->query_vars[$var] = $this->extra_query_vars[$var]; |
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292 } |
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293 |
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294 if ( isset($error) ) |
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295 $this->query_vars['error'] = $error; |
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296 |
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297 $this->query_vars = apply_filters('request', $this->query_vars); |
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298 |
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299 do_action_ref_array('parse_request', array(&$this)); |
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300 } |
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301 |
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302 /** |
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303 * Send additional HTTP headers for caching, content type, etc. |
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304 * |
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305 * Sets the X-Pingback header, 404 status (if 404), Content-type. If showing |
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306 * a feed, it will also send last-modified, etag, and 304 status if needed. |
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307 * |
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308 * @since 2.0.0 |
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309 */ |
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310 function send_headers() { |
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311 $headers = array('X-Pingback' => get_bloginfo('pingback_url')); |
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312 $status = null; |
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313 $exit_required = false; |
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314 |
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315 if ( is_user_logged_in() ) |
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316 $headers = array_merge($headers, wp_get_nocache_headers()); |
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317 if ( ! empty( $this->query_vars['error'] ) ) { |
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318 $status = (int) $this->query_vars['error']; |
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319 if ( 404 === $status ) { |
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320 if ( ! is_user_logged_in() ) |
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321 $headers = array_merge($headers, wp_get_nocache_headers()); |
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322 $headers['Content-Type'] = get_option('html_type') . '; charset=' . get_option('blog_charset'); |
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323 } elseif ( in_array( $status, array( 403, 500, 502, 503 ) ) ) { |
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324 $exit_required = true; |
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325 } |
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326 } else if ( empty($this->query_vars['feed']) ) { |
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327 $headers['Content-Type'] = get_option('html_type') . '; charset=' . get_option('blog_charset'); |
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328 } else { |
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329 // We're showing a feed, so WP is indeed the only thing that last changed |
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330 if ( !empty($this->query_vars['withcomments']) |
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331 || false !== strpos( $this->query_vars['feed'], 'comments-' ) |
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332 || ( empty($this->query_vars['withoutcomments']) |
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333 && ( !empty($this->query_vars['p']) |
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334 || !empty($this->query_vars['name']) |
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335 || !empty($this->query_vars['page_id']) |
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336 || !empty($this->query_vars['pagename']) |
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337 || !empty($this->query_vars['attachment']) |
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338 || !empty($this->query_vars['attachment_id']) |
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339 ) |
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340 ) |
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341 ) |
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342 $wp_last_modified = mysql2date('D, d M Y H:i:s', get_lastcommentmodified('GMT'), 0).' GMT'; |
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343 else |
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344 $wp_last_modified = mysql2date('D, d M Y H:i:s', get_lastpostmodified('GMT'), 0).' GMT'; |
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345 $wp_etag = '"' . md5($wp_last_modified) . '"'; |
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346 $headers['Last-Modified'] = $wp_last_modified; |
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347 $headers['ETag'] = $wp_etag; |
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348 |
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349 // Support for Conditional GET |
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350 if (isset($_SERVER['HTTP_IF_NONE_MATCH'])) |
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351 $client_etag = wp_unslash( $_SERVER['HTTP_IF_NONE_MATCH'] ); |
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352 else $client_etag = false; |
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353 |
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354 $client_last_modified = empty($_SERVER['HTTP_IF_MODIFIED_SINCE']) ? '' : trim($_SERVER['HTTP_IF_MODIFIED_SINCE']); |
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355 // If string is empty, return 0. If not, attempt to parse into a timestamp |
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356 $client_modified_timestamp = $client_last_modified ? strtotime($client_last_modified) : 0; |
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357 |
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358 // Make a timestamp for our most recent modification... |
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359 $wp_modified_timestamp = strtotime($wp_last_modified); |
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360 |
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361 if ( ($client_last_modified && $client_etag) ? |
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362 (($client_modified_timestamp >= $wp_modified_timestamp) && ($client_etag == $wp_etag)) : |
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363 (($client_modified_timestamp >= $wp_modified_timestamp) || ($client_etag == $wp_etag)) ) { |
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364 $status = 304; |
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365 $exit_required = true; |
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366 } |
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367 } |
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368 |
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369 $headers = apply_filters('wp_headers', $headers, $this); |
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370 |
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371 if ( ! empty( $status ) ) |
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372 status_header( $status ); |
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373 |
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374 // If Last-Modified is set to false, it should not be sent (no-cache situation). |
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375 if ( isset( $headers['Last-Modified'] ) && false === $headers['Last-Modified'] ) { |
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376 unset( $headers['Last-Modified'] ); |
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377 |
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378 // In PHP 5.3+, make sure we are not sending a Last-Modified header. |
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379 if ( function_exists( 'header_remove' ) ) { |
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380 @header_remove( 'Last-Modified' ); |
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381 } else { |
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382 // In PHP 5.2, send an empty Last-Modified header, but only as a |
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383 // last resort to override a header already sent. #WP23021 |
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384 foreach ( headers_list() as $header ) { |
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385 if ( 0 === stripos( $header, 'Last-Modified' ) ) { |
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386 $headers['Last-Modified'] = ''; |
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387 break; |
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388 } |
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389 } |
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390 } |
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391 } |
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392 |
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393 foreach( (array) $headers as $name => $field_value ) |
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394 @header("{$name}: {$field_value}"); |
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395 |
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396 if ( $exit_required ) |
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397 exit(); |
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398 |
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399 do_action_ref_array('send_headers', array(&$this)); |
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400 } |
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401 |
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402 /** |
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403 * Sets the query string property based off of the query variable property. |
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404 * |
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405 * The 'query_string' filter is deprecated, but still works. Plugins should |
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406 * use the 'request' filter instead. |
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407 * |
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408 * @since 2.0.0 |
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409 */ |
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410 function build_query_string() { |
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411 $this->query_string = ''; |
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412 foreach ( (array) array_keys($this->query_vars) as $wpvar) { |
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413 if ( '' != $this->query_vars[$wpvar] ) { |
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414 $this->query_string .= (strlen($this->query_string) < 1) ? '' : '&'; |
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415 if ( !is_scalar($this->query_vars[$wpvar]) ) // Discard non-scalars. |
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416 continue; |
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417 $this->query_string .= $wpvar . '=' . rawurlencode($this->query_vars[$wpvar]); |
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418 } |
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419 } |
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420 |
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421 // query_string filter deprecated. Use request filter instead. |
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422 if ( has_filter('query_string') ) { // Don't bother filtering and parsing if no plugins are hooked in. |
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423 $this->query_string = apply_filters('query_string', $this->query_string); |
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424 parse_str($this->query_string, $this->query_vars); |
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425 } |
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426 } |
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427 |
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428 /** |
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429 * Set up the WordPress Globals. |
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430 * |
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431 * The query_vars property will be extracted to the GLOBALS. So care should |
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432 * be taken when naming global variables that might interfere with the |
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433 * WordPress environment. |
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434 * |
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435 * @global string $query_string Query string for the loop. |
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436 * @global array $posts The found posts. |
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437 * @global WP_Post|null $post The current post, if available. |
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438 * @global string $request The SQL statement for the request. |
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439 * @global int $more Only set, if single page or post. |
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440 * @global int $single If single page or post. Only set, if single page or post. |
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441 * @global WP_User $authordata Only set, if author archive. |
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442 * |
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443 * @since 2.0.0 |
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444 */ |
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445 function register_globals() { |
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446 global $wp_query; |
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447 |
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448 // Extract updated query vars back into global namespace. |
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449 foreach ( (array) $wp_query->query_vars as $key => $value ) { |
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450 $GLOBALS[ $key ] = $value; |
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451 } |
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452 |
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453 $GLOBALS['query_string'] = $this->query_string; |
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454 $GLOBALS['posts'] = & $wp_query->posts; |
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455 $GLOBALS['post'] = isset( $wp_query->post ) ? $wp_query->post : null; |
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456 $GLOBALS['request'] = $wp_query->request; |
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457 |
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458 if ( $wp_query->is_single() || $wp_query->is_page() ) { |
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459 $GLOBALS['more'] = 1; |
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460 $GLOBALS['single'] = 1; |
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461 } |
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462 |
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463 if ( $wp_query->is_author() && isset( $wp_query->post ) ) |
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464 $GLOBALS['authordata'] = get_userdata( $wp_query->post->post_author ); |
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465 } |
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466 |
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467 /** |
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468 * Set up the current user. |
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469 * |
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470 * @since 2.0.0 |
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471 */ |
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472 function init() { |
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473 wp_get_current_user(); |
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474 } |
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475 |
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476 /** |
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477 * Set up the Loop based on the query variables. |
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478 * |
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479 * @uses WP::$query_vars |
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480 * @since 2.0.0 |
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481 */ |
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482 function query_posts() { |
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483 global $wp_the_query; |
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484 $this->build_query_string(); |
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485 $wp_the_query->query($this->query_vars); |
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486 } |
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487 |
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488 /** |
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489 * Set the Headers for 404, if nothing is found for requested URL. |
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490 * |
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491 * Issue a 404 if a request doesn't match any posts and doesn't match |
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492 * any object (e.g. an existing-but-empty category, tag, author) and a 404 was not already |
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493 * issued, and if the request was not a search or the homepage. |
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494 * |
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495 * Otherwise, issue a 200. |
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496 * |
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497 * @since 2.0.0 |
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498 */ |
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499 function handle_404() { |
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500 global $wp_query; |
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501 |
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502 // If we've already issued a 404, bail. |
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503 if ( is_404() ) |
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504 return; |
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505 |
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506 // Never 404 for the admin, robots, or if we found posts. |
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507 if ( is_admin() || is_robots() || $wp_query->posts ) { |
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508 status_header( 200 ); |
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509 return; |
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510 } |
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511 |
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512 // We will 404 for paged queries, as no posts were found. |
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513 if ( ! is_paged() ) { |
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514 |
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515 // Don't 404 for these queries if they matched an object. |
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516 if ( ( is_tag() || is_category() || is_tax() || is_author() || is_post_type_archive() ) && $wp_query->get_queried_object() ) { |
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517 status_header( 200 ); |
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518 return; |
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519 } |
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520 |
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521 // Don't 404 for these queries either. |
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522 if ( is_home() || is_search() ) { |
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523 status_header( 200 ); |
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524 return; |
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525 } |
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526 } |
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527 |
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528 // Guess it's time to 404. |
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529 $wp_query->set_404(); |
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530 status_header( 404 ); |
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531 nocache_headers(); |
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532 } |
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533 |
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534 /** |
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535 * Sets up all of the variables required by the WordPress environment. |
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536 * |
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537 * The action 'wp' has one parameter that references the WP object. It |
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538 * allows for accessing the properties and methods to further manipulate the |
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539 * object. |
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540 * |
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541 * @since 2.0.0 |
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542 * |
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543 * @param string|array $query_args Passed to {@link parse_request()} |
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544 */ |
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545 function main($query_args = '') { |
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546 $this->init(); |
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547 $this->parse_request($query_args); |
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548 $this->send_headers(); |
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549 $this->query_posts(); |
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550 $this->handle_404(); |
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551 $this->register_globals(); |
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552 do_action_ref_array('wp', array(&$this)); |
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553 } |
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554 |
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555 } |
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556 |
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557 /** |
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558 * Helper class to remove the need to use eval to replace $matches[] in query strings. |
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559 * |
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560 * @since 2.9.0 |
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561 */ |
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562 class WP_MatchesMapRegex { |
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563 /** |
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564 * store for matches |
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565 * |
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566 * @access private |
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567 * @var array |
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568 */ |
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569 var $_matches; |
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570 |
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571 /** |
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572 * store for mapping result |
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573 * |
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574 * @access public |
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575 * @var string |
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576 */ |
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577 var $output; |
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578 |
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579 /** |
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580 * subject to perform mapping on (query string containing $matches[] references |
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581 * |
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582 * @access private |
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583 * @var string |
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584 */ |
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585 var $_subject; |
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586 |
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587 /** |
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588 * regexp pattern to match $matches[] references |
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589 * |
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590 * @var string |
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591 */ |
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592 var $_pattern = '(\$matches\[[1-9]+[0-9]*\])'; // magic number |
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593 |
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594 /** |
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595 * constructor |
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596 * |
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597 * @param string $subject subject if regex |
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598 * @param array $matches data to use in map |
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599 * @return self |
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600 */ |
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601 function WP_MatchesMapRegex($subject, $matches) { |
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602 $this->_subject = $subject; |
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603 $this->_matches = $matches; |
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604 $this->output = $this->_map(); |
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605 } |
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606 |
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607 /** |
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608 * Substitute substring matches in subject. |
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609 * |
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610 * static helper function to ease use |
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611 * |
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612 * @access public |
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613 * @param string $subject subject |
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614 * @param array $matches data used for substitution |
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615 * @return string |
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616 */ |
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617 public static function apply($subject, $matches) { |
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618 $oSelf = new WP_MatchesMapRegex($subject, $matches); |
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619 return $oSelf->output; |
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620 } |
|
621 |
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622 /** |
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623 * do the actual mapping |
|
624 * |
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625 * @access private |
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626 * @return string |
|
627 */ |
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628 function _map() { |
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629 $callback = array($this, 'callback'); |
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630 return preg_replace_callback($this->_pattern, $callback, $this->_subject); |
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631 } |
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632 |
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633 /** |
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634 * preg_replace_callback hook |
|
635 * |
|
636 * @access public |
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637 * @param array $matches preg_replace regexp matches |
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638 * @return string |
|
639 */ |
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640 function callback($matches) { |
|
641 $index = intval(substr($matches[0], 9, -1)); |
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642 return ( isset( $this->_matches[$index] ) ? urlencode($this->_matches[$index]) : '' ); |
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643 } |
|
644 |
|
645 } |