]> git.mxchange.org Git - friendica.git/blobdiff - include/network.php
Merge pull request #803 from annando/master
[friendica.git] / include / network.php
index c1a76000ef2b021174a29af69b56004fddb7512f..3bf2626424ca546f1f3dd65fe060716709f6bb7a 100644 (file)
@@ -4,25 +4,39 @@
 // curl wrapper. If binary flag is true, return binary
 // results. 
 
+// Set the cookiejar argument to a string (e.g. "/tmp/friendica-cookies.txt")
+// to preserve cookies from one request to the next.
 if(! function_exists('fetch_url')) {
-function fetch_url($url,$binary = false, &$redirects = 0, $timeout = 0, $accept_content=Null) {
+function fetch_url($url,$binary = false, &$redirects = 0, $timeout = 0, $accept_content=Null, $cookiejar = 0) {
+
+       $stamp1 = microtime(true);
 
        $a = get_app();
 
        $ch = @curl_init($url);
-       if(($redirects > 8) || (! $ch)) 
+       if(($redirects > 8) || (! $ch))
                return false;
 
        @curl_setopt($ch, CURLOPT_HEADER, true);
-       
+
+       if($cookiejar) {
+               curl_setopt($ch, CURLOPT_COOKIEJAR, $cookiejar);
+               curl_setopt($ch, CURLOPT_COOKIEFILE, $cookiejar);
+       }
+
+//  These settings aren't needed. We're following the location already. 
+//     @curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
+//     @curl_setopt($ch, CURLOPT_MAXREDIRS, 5);
+
        if (!is_null($accept_content)){
                curl_setopt($ch,CURLOPT_HTTPHEADER, array (
                        "Accept: " . $accept_content
                ));
        }
-       
+
        @curl_setopt($ch, CURLOPT_RETURNTRANSFER,true);
-       @curl_setopt($ch, CURLOPT_USERAGENT, "Friendica");
+       //@curl_setopt($ch, CURLOPT_USERAGENT, "Friendica");
+       @curl_setopt($ch, CURLOPT_USERAGENT, "Mozilla/5.0 (compatible; Friendica)");
 
 
        if(intval($timeout)) {
@@ -59,7 +73,6 @@ function fetch_url($url,$binary = false, &$redirects = 0, $timeout = 0, $accept_
        $base = $s;
        $curl_info = @curl_getinfo($ch);
        $http_code = $curl_info['http_code'];
-
 //     logger('fetch_url:' . $http_code . ' data: ' . $s);
        $header = '';
 
@@ -73,25 +86,35 @@ function fetch_url($url,$binary = false, &$redirects = 0, $timeout = 0, $accept_
        }
 
        if($http_code == 301 || $http_code == 302 || $http_code == 303 || $http_code == 307) {
-        $matches = array();
-        preg_match('/(Location:|URI:)(.*?)\n/', $header, $matches);
-        $newurl = trim(array_pop($matches));
+               $new_location_info = @parse_url($curl_info["redirect_url"]);
+               $old_location_info = @parse_url($curl_info["url"]);
+
+               $newurl = $curl_info["redirect_url"];
+
+               if (($new_location_info["path"] == "") AND ($new_location_info["host"] != ""))
+                       $newurl = $new_location_info["scheme"]."://".$new_location_info["host"].$old_location_info["path"];
+
+               $matches = array();
+               if (preg_match('/(Location:|URI:)(.*?)\n/', $header, $matches)) {
+                       $newurl = trim(array_pop($matches));
+               }
                if(strpos($newurl,'/') === 0)
-                       $newurl = $url . $newurl;
-        $url_parsed = @parse_url($newurl);
-        if (isset($url_parsed)) {
-            $redirects++;
-            return fetch_url($newurl,$binary,$redirects,$timeout);
-        }
-    }
+                       $newurl = $old_location_info["scheme"]."://".$old_location_info["host"].$newurl;
+               if (filter_var($newurl, FILTER_VALIDATE_URL)) {
+                       $redirects++;
+                       return fetch_url($newurl,$binary,$redirects,$timeout,$accept_content,$cookiejar);
+               }
+       }
 
        $a->set_curl_code($http_code);
+       $a->set_curl_content_type($curl_info['content_type']);
 
        $body = substr($s,strlen($header));
-
        $a->set_curl_headers($header);
-
        @curl_close($ch);
+
+       $a->save_timestamp($stamp1, "network");
+
        return($body);
 }}
 
@@ -99,9 +122,12 @@ function fetch_url($url,$binary = false, &$redirects = 0, $timeout = 0, $accept_
 
 if(! function_exists('post_url')) {
 function post_url($url,$params, $headers = null, &$redirects = 0, $timeout = 0) {
+
+       $stamp1 = microtime(true);
+
        $a = get_app();
        $ch = curl_init($url);
-       if(($redirects > 8) || (! $ch)) 
+       if(($redirects > 8) || (! $ch))
                return false;
 
        curl_setopt($ch, CURLOPT_HEADER, true);
@@ -168,9 +194,8 @@ function post_url($url,$params, $headers = null, &$redirects = 0, $timeout = 0)
         preg_match('/(Location:|URI:)(.*?)\n/', $header, $matches);
         $newurl = trim(array_pop($matches));
                if(strpos($newurl,'/') === 0)
-                       $newurl = $url . $newurl;
-        $url_parsed = @parse_url($newurl);
-        if (isset($url_parsed)) {
+                       $newurl = $old_location_info["scheme"] . "://" . $old_location_info["host"] . $newurl;
+        if (filter_var($newurl, FILTER_VALIDATE_URL)) {
             $redirects++;
             return fetch_url($newurl,false,$redirects,$timeout);
         }
@@ -181,6 +206,9 @@ function post_url($url,$params, $headers = null, &$redirects = 0, $timeout = 0)
        $a->set_curl_headers($header);
 
        curl_close($ch);
+
+       $a->save_timestamp($stamp1, "network");
+
        return($body);
 }}
 
@@ -290,9 +318,9 @@ function webfinger_dfrn($s,&$hcard) {
                        if($link['@attributes']['rel'] === NAMESPACE_DFRN)
                                $profile_link = $link['@attributes']['href'];
                        if($link['@attributes']['rel'] === NAMESPACE_OSTATUSSUB)
-                               $profile_link = 'stat:' . $link['@attributes']['template'];     
+                               $profile_link = 'stat:' . $link['@attributes']['template'];
                        if($link['@attributes']['rel'] === 'http://microformats.org/profile/hcard')
-                               $hcard = $link['@attributes']['href'];                          
+                               $hcard = $link['@attributes']['href'];
                }
        }
        return $profile_link;
@@ -358,6 +386,7 @@ function lrdd($uri, $debug = false) {
        logger('lrdd: constructed url: ' . $url);
 
        $xml = fetch_url($url);
+
        $headers = $a->get_curl_headers();
 
        if (! $xml)
@@ -407,7 +436,7 @@ function lrdd($uri, $debug = false) {
                                elseif(x($link['@attributes'],'href'))
                                        $href = $link['@attributes']['href'];
                        }
-               }               
+               }
        }
 
        if((! isset($tpl)) || (! strpos($tpl,'{uri}')))
@@ -426,7 +455,7 @@ function lrdd($uri, $debug = false) {
 
                $lines = explode("\n",$headers);
                if(count($lines)) {
-                       foreach($lines as $line) {                              
+                       foreach($lines as $line) {
                                if((stristr($line,'link:')) && preg_match('/<([^>].*)>.*rel\=[\'\"]lrdd[\'\"]/',$line,$matches)) {
                                        return(fetch_xrd_links($matches[1]));
                                        break;
@@ -472,7 +501,7 @@ function lrdd($uri, $debug = false) {
 
        $lines = explode("\n",$headers);
        if(count($lines)) {
-               foreach($lines as $line) {                              
+               foreach($lines as $line) {
                        // TODO alter the following regex to support multiple relations (space separated)
                        if((stristr($line,'link:')) && preg_match('/<([^>].*)>.*rel\=[\'\"]lrdd[\'\"]/',$line,$matches)) {
                                $pagelink = $matches[1];
@@ -588,14 +617,14 @@ function fetch_xrd_links($url) {
 
 if(! function_exists('validate_url')) {
 function validate_url(&$url) {
-       
+
        // no naked subdomains (allow localhost for tests)
        if(strpos($url,'.') === false && strpos($url,'/localhost/') === false)
                return false;
        if(substr($url,0,4) != 'http')
                $url = 'http://' . $url;
        $h = @parse_url($url);
-       
+
        if(($h) && (dns_get_record($h['host'], DNS_A + DNS_CNAME + DNS_PTR) || filter_var($h['host'], FILTER_VALIDATE_IP) )) {
                return true;
        }
@@ -607,6 +636,9 @@ function validate_url(&$url) {
 if(! function_exists('validate_email')) {
 function validate_email($addr) {
 
+       if(get_config('system','disable_email_validation'))
+               return true;
+
        if(! strpos($addr,'@'))
                return false;
        $h = substr($addr,strpos($addr,'@') + 1);
@@ -751,7 +783,7 @@ function add_fcontact($arr,$update = false) {
                        `alias` = '%s',
                        `pubkey` = '%s',
                        `updated` = '%s'
-                       WHERE `url` = '%s' AND `network` = '%s' LIMIT 1", 
+                       WHERE `url` = '%s' AND `network` = '%s'",
                        dbesc($arr['name']),
                        dbesc($arr['photo']),
                        dbesc($arr['request']),
@@ -793,12 +825,15 @@ function add_fcontact($arr,$update = false) {
 }
 
 
-function scale_external_images($s, $include_link = true, $scale_replace = false) {
+function scale_external_images($srctext, $include_link = true, $scale_replace = false) {
 
        $a = get_app();
 
+       // Picture addresses can contain special characters
+       $s = htmlspecialchars_decode($srctext);
+
        $matches = null;
-       $c = preg_match_all('/\[img\](.*?)\[\/img\]/ism',$s,$matches,PREG_SET_ORDER);
+       $c = preg_match_all('/\[img.*?\](.*?)\[\/img\]/ism',$s,$matches,PREG_SET_ORDER);
        if($c) {
                require_once('include/Photo.php');
                foreach($matches as $mtch) {
@@ -817,11 +852,20 @@ function scale_external_images($s, $include_link = true, $scale_replace = false)
                                $scaled = str_replace($scale_replace[0], $scale_replace[1], $mtch[1]);
                        else
                                $scaled = $mtch[1];
-                       $i = fetch_url($scaled);
+                       $i = @fetch_url($scaled);
+                       if(! $i)
+                               return $srctext;
+
+                       $cachefile = get_cachefile(hash("md5", $scaled));
+                       if ($cachefile != '') {
+                               $stamp1 = microtime(true);
+                               file_put_contents($cachefile, $i);
+                               $a->save_timestamp($stamp1, "file");
+                       }
 
                        // guess mimetype from headers or filename
                        $type = guess_image_type($mtch[1],true);
-                       
+
                        if($i) {
                                $ph = new Photo($i, $type);
                                if($ph->is_valid()) {
@@ -844,6 +888,9 @@ function scale_external_images($s, $include_link = true, $scale_replace = false)
                        }
                }
        }
+
+       // replace the special char encoding
+       $s = htmlspecialchars($s,ENT_NOQUOTES,'UTF-8');
        return $s;
 }
 
@@ -904,7 +951,7 @@ function fix_contact_ssl_policy(&$contact,$new_policy) {
  * Return: The parsed XML in an array form. Use print_r() to see the resulting array structure.
  * Examples: $array =  xml2array(file_get_contents('feed.xml'));
  *              $array =  xml2array(file_get_contents('feed.xml', true, 1, 'attribute'));
- */ 
+ */
 
 function xml2array($contents, $namespaces = true, $get_attributes=1, $priority = 'attribute') {
     if(!$contents) return array();
@@ -962,7 +1009,7 @@ function xml2array($contents, $namespaces = true, $get_attributes=1, $priority =
 
         $result = array();
         $attributes_data = array();
-        
+
         if(isset($value)) {
             if($priority == 'tag') $result = $value;
             else $result['value'] = $value; // Put the value in a assoc array if we are in the 'Attribute' mode
@@ -978,7 +1025,7 @@ function xml2array($contents, $namespaces = true, $get_attributes=1, $priority =
 
         // See tag status and do the needed.
                if($namespaces && strpos($tag,':')) {
-                       $namespc = substr($tag,0,strrpos($tag,':')); 
+                       $namespc = substr($tag,0,strrpos($tag,':'));
                        $tag = strtolower(substr($tag,strlen($namespc)+1));
                        $result['@namespace'] = $namespc;
                }
@@ -1001,7 +1048,7 @@ function xml2array($contents, $namespaces = true, $get_attributes=1, $priority =
                 } else { // This section will make the value an array if multiple tags with the same name appear together
                     $current[$tag] = array($current[$tag],$result); // This will combine the existing item and the new item together to make an array
                     $repeated_tag_index[$tag.'_'.$level] = 2;
-                    
+
                     if(isset($current[$tag.'_attr'])) { // The attribute of the last(0th) tag must be moved as well
                         $current[$tag]['0_attr'] = $current[$tag.'_attr'];
                         unset($current[$tag.'_attr']);
@@ -1024,7 +1071,7 @@ function xml2array($contents, $namespaces = true, $get_attributes=1, $priority =
 
                     // ...push the new element into that array.
                     $current[$tag][$repeated_tag_index[$tag.'_'.$level]] = $result;
-                    
+
                     if($priority == 'tag' and $get_attributes and $attributes_data) {
                         $current[$tag][$repeated_tag_index[$tag.'_'.$level] . '_attr'] = $attributes_data;
                     }
@@ -1035,11 +1082,11 @@ function xml2array($contents, $namespaces = true, $get_attributes=1, $priority =
                     $repeated_tag_index[$tag.'_'.$level] = 1;
                     if($priority == 'tag' and $get_attributes) {
                         if(isset($current[$tag.'_attr'])) { // The attribute of the last(0th) tag must be moved as well
-                            
+
                             $current[$tag]['0_attr'] = $current[$tag.'_attr'];
                             unset($current[$tag.'_attr']);
                         }
-                        
+
                         if($attributes_data) {
                             $current[$tag][$repeated_tag_index[$tag.'_'.$level] . '_attr'] = $attributes_data;
                         }
@@ -1052,6 +1099,6 @@ function xml2array($contents, $namespaces = true, $get_attributes=1, $priority =
             $current = &$parent[$level-1];
         }
     }
-    
+
     return($xml_array);
-}  
+}