from given url function removeHttpHostNameFromUrl ($url) { // Remove http[s]:// $remove = explode(':', $url); $remove = explode('/', substr($remove[1], 3)); // Remove the first element (should be the hostname) unset($remove[0]); // implode() back all other elements and prepend a slash $url = '/' . implode('/', $remove); // Return prepared URL return $url; } // Sends a HTTP request (GET, POST, HEAD are currently supported) function sendHttpRequest ($requestType, $baseUrl, $requestData = array(), $removeHeader = false) { // Init response $response = array(); // Start "detecting" the request type switch ($requestType) { case 'HEAD': // Send a HTTP/1.1 HEAD request $response = sendHeadRequest($baseUrl, $requestData); break; case 'GET': // Send a HTTP/1.1 GET request $response = sendGetRequest($baseUrl, $requestData, $removeHeader); break; case 'POST': // Send a HTTP/1.1 POST request $response = sendPostRequest($baseUrl, $requestData, $removeHeader); break; default: // Unsupported HTTP request, this is really bad and needs fixing debug_report_bug(__FUNCTION__, __LINE__, 'Unsupported request detected. requestType=' . $requestType . ',baseUrl=' . $baseUrl . ',requestData()=' . count($requestData)); break; } // END - switch // Return response return $response; } // Sends a HEAD request function sendHeadRequest ($baseUrl, $requestData = array()) { // Generate full GET URL $getUrl = generateGetUrlFromBaseUrlData($baseUrl, $requestData); // Do we have http[s]:// in front of the URL? if (isFullQualifiedUrl($getUrl)) { // Remove http[s]:// from URL $getUrl = removeHttpHostNameFromUrl($getUrl); } elseif (substr($getUrl, 0, 1) != '/') { // Prepend a slash $getUrl = '/' . $getUrl; } // Extract hostname and port from script $host = extractHostnameFromUrl($baseUrl); // Generate HEAD request header $request = 'HEAD ' . trim($getUrl) . ' HTTP/1.1' . getConfig('HTTP_EOL'); $request .= 'Host: ' . $host . getConfig('HTTP_EOL'); $request .= 'Referer: ' . getUrl() . '/admin.php' . getConfig('HTTP_EOL'); if (isConfigEntrySet('FULL_VERSION')) { $request .= 'User-Agent: ' . getTitle() . '/' . getFullVersion() . getConfig('HTTP_EOL'); } else { $request .= 'User-Agent: ' . getTitle() . '/' . getConfig('VERSION') . getConfig('HTTP_EOL'); } $request .= 'Accept: image/png,image/*;q=0.8,text/plain,text/html,*/*;q=0.5' . getConfig('HTTP_EOL'); $request .= 'Accept-Charset: UTF-8,*' . getConfig('HTTP_EOL'); $request .= 'Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0' . getConfig('HTTP_EOL'); $request .= 'Connection: close' . getConfig('HTTP_EOL'); $request .= getConfig('HTTP_EOL'); // Send the raw request $response = sendRawRequest($host, $request); // Return the result to the caller function return $response; } // Send a GET request function sendGetRequest ($baseUrl, $requestData = array(), $removeHeader = false) { // Generate full GET URL $getUrl = generateGetUrlFromBaseUrlData($baseUrl, $requestData); // Do we have http[s]:// in front of the URL? if (isFullQualifiedUrl($getUrl)) { // Remove http[s]:// from url $getUrl = removeHttpHostNameFromUrl($getUrl); } elseif (substr($getUrl, 0, 1) != '/') { // Prepend a slash $getUrl = '/' . $getUrl; } // Extract hostname and port from script $host = extractHostnameFromUrl($baseUrl); // Generate GET request header $request = 'GET ' . trim($getUrl) . ' HTTP/1.1' . getConfig('HTTP_EOL'); $request .= 'Host: ' . $host . getConfig('HTTP_EOL'); $request .= 'Referer: ' . getUrl() . '/admin.php' . getConfig('HTTP_EOL'); if (isConfigEntrySet('FULL_VERSION')) { $request .= 'User-Agent: ' . getTitle() . '/' . getFullVersion() . getConfig('HTTP_EOL'); } else { $request .= 'User-Agent: ' . getTitle() . '/' . getConfig('VERSION') . getConfig('HTTP_EOL'); } $request .= 'Accept: image/png,image/*;q=0.8,text/plain,text/html,*/*;q=0.5' . getConfig('HTTP_EOL'); $request .= 'Accept-Charset: UTF-8,*' . getConfig('HTTP_EOL'); $request .= 'Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0' . getConfig('HTTP_EOL'); $request .= 'Connection: close' . getConfig('HTTP_EOL'); $request .= getConfig('HTTP_EOL'); // Send the raw request $response = sendRawRequest($host, $request); // Should we remove header lines? if ($removeHeader === true) { // Okay, remove them $response = removeHttpHeaderFromResponse($response); } // END - if // Return the result to the caller function return $response; } // Send a POST request function sendPostRequest ($baseUrl, $requestData, $removeHeader = false) { // Copy baseUrl to getUrl $getUrl = $baseUrl; // Do we have http[s]:// in front of the URL? if (isFullQualifiedUrl($getUrl)) { // Remove http[s]:// from url $getUrl = removeHttpHostNameFromUrl($getUrl); } elseif (substr($getUrl, 0, 1) != '/') { // Prepend a slash $getUrl = '/' . $getUrl; } // Extract host name from script $host = extractHostnameFromUrl($baseUrl); // Construct request body $body = http_build_query($requestData, '', '&'); // Generate POST request header $request = 'POST ' . trim($baseUrl) . ' HTTP/1.0' . getConfig('HTTP_EOL'); $request .= 'Host: ' . $host . getConfig('HTTP_EOL'); $request .= 'Referer: ' . getUrl() . '/admin.php' . getConfig('HTTP_EOL'); if (isConfigEntrySet('FULL_VERSION')) { $request .= 'User-Agent: ' . getTitle() . '/' . getFullVersion() . getConfig('HTTP_EOL'); } else { $request .= 'User-Agent: ' . getTitle() . '/' . getConfig('VERSION') . getConfig('HTTP_EOL'); } $request .= 'Accept: text/plain;q=0.8' . getConfig('HTTP_EOL'); $request .= 'Accept-Charset: UTF-8,*' . getConfig('HTTP_EOL'); $request .= 'Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0' . getConfig('HTTP_EOL'); $request .= 'Content-Type: application/x-www-form-urlencoded' . getConfig('HTTP_EOL'); $request .= 'Content-Length: ' . strlen($body) . getConfig('HTTP_EOL'); $request .= 'Connection: close' . getConfig('HTTP_EOL'); $request .= getConfig('HTTP_EOL'); // Add body $request .= $body; // Send the raw request $response = sendRawRequest($host, $request); // Should we remove header lines? if ($removeHeader === true) { // Okay, remove them $response = removeHttpHeaderFromResponse($response); } // END - if // Return the result to the caller function return $response; } // Sends a raw request (string) to given host (hostnames will be solved) function sendRawRequest ($host, $request) { //* DEBUG: */ die('host='.$host.',request=
'.$request.'
'); // Init errno and errdesc with 'all fine' values $errno = '0'; $errdesc = ''; // Default port is 80 $port = 80; // Initialize array $response = array('', '', ''); // Default is non-broken HTTP server implementation $GLOBALS['is_http_server_broken'] = false; // Load include loadIncludeOnce('inc/classes/resolver.class.php'); // Extract port part from host $portArray = explode(':', $host); if (count($portArray) == 2) { // Extract host and port $host = $portArray[0]; $port = $portArray[1]; } elseif (count($portArray) > 2) { // This should not happen! debug_report_bug(__FUNCTION__, __LINE__, 'Invalid ' . $host . '. Please report this to the Mailer-Project team.'); } // Get resolver instance $resolver = new HostnameResolver(); // Open connection if (isProxyUsed() === true) { // Resolve hostname into IP address $ip = $resolver->resolveHostname(compileRawCode(getProxyHost())); // Connect to host through proxy connection $fp = fsockopen($ip, bigintval(getProxyPort()), $errno, $errdesc, 30); } else { // Resolve hostname into IP address $ip = $resolver->resolveHostname($host); // Connect to host directly $fp = fsockopen($ip, $port, $errno, $errdesc, 30); } //* DEBUG: */ logDebugMessage(__FUNCTION__, __LINE__, 'ip=' . $ip . ',host=' . $host . ',isProxyUsed()=' . intval(isProxyUsed())); // Is there a link? if (!is_resource($fp)) { // Failed! logDebugMessage(__FUNCTION__, __LINE__, $errdesc . ' (' . $errno . ')'); return $response; } elseif ((!stream_set_blocking($fp, 0)) || (!stream_set_timeout($fp, 1))) { // Cannot set non-blocking mode or timeout logDebugMessage(__FUNCTION__, __LINE__, socket_strerror(socket_last_error())); return $response; } // Do we use proxy? if (isProxyUsed() === true) { // Setup proxy tunnel $response = setupProxyTunnel($host, $port, $fp); // If the response is invalid, abort if ((count($response) == 3) && (empty($response[0])) && (empty($response[1])) && (empty($response[2]))) { // Invalid response! logDebugMessage(__FUNCTION__, __LINE__, 'Proxy tunnel not working?'); return $response; } // END - if } // END - if // Write request fwrite($fp, $request); // Start counting $start = microtime(true); // Read response while (!feof($fp)) { // Get info from stream $info = stream_get_meta_data($fp); // Is it timed out? 15 seconds is a really patient... if (($info['timed_out'] == true) || (microtime(true) - $start) > 15) { // Timeout logDebugMessage(__FUNCTION__, __LINE__, 'Timed out to get data from host ' . $host); // Abort here break; } // END - if // Get line from stream $line = fgets($fp, 128); // Ignore empty lines because of non-blocking mode if (empty($line)) { // uslepp a little to avoid 100% CPU load usleep(10); // Skip this continue; } // END - if // Check for broken HTTP implementations if (substr(strtolower($line), 0, 7) == 'server:') { // Anomic (see http://anomic.de, http://yacy.net) is currently broken $GLOBALS['is_http_server_broken'] = (count(getArrayKeysFromSubStrArray(strtolower($line), array('anomichttpd'))) > 0); } // END - if // Add it to response //* DEBUG: */ print 'line='.$line.'
'; $response[] = $line; } // END - while // Close socket fclose($fp); // Time request if debug-mode is enabled if (isDebugModeEnabled()) { // Add debug message... logDebugMessage(__FUNCTION__, __LINE__, 'Request took ' . (microtime(true) - $start) . ' seconds and returned ' . count($response) . ' line(s).'); } // END - if // Skip first empty lines $resp = $response; foreach ($resp as $idx => $line) { // Trim space away $line = trim($line); // Is this line empty? if (empty($line)) { // Then remove it array_shift($response); } else { // Abort on first non-empty line break; } } // END - foreach //* DEBUG: */ debugOutput('Request:
'.print_r($request, true).'
'); //* DEBUG: */ debugOutput('Response:
'.print_r($response, true).'
'); // Proxy agent found or something went wrong? if (!isset($response[0])) { // No response, maybe timeout $response = array('', '', ''); logDebugMessage(__FUNCTION__, __LINE__, 'Invalid empty response array, maybe timed out?'); } elseif ((substr(strtolower($response[0]), 0, 11) == 'proxy-agent') && (isProxyUsed() === true)) { // Proxy header detected, so remove two lines array_shift($response); array_shift($response); } // END - if // Was the request successfull? if ((!isInStringIgnoreCase('200 OK', $response[0])) || (empty($response[0]))) { // Not found / access forbidden logDebugMessage(__FUNCTION__, __LINE__, 'Unexpected status code ' . $response[0] . ' detected. "200 OK" was expected.'); $response = array('', '', ''); } else { // Check array for chuncked encoding $response = unchunkHttpResponse($response); } // END - if // Return response return $response; } // Sets up a proxy tunnel for given hostname and through resource function setupProxyTunnel ($host, $port, $resource) { // Initialize array $response = array('', '', ''); // Generate CONNECT request header $proxyTunnel = 'CONNECT ' . $host . ':' . $port . ' HTTP/1.0' . getConfig('HTTP_EOL'); $proxyTunnel .= 'Host: ' . $host . getConfig('HTTP_EOL'); // Use login data to proxy? (username at least!) if (getProxyUsername() != '') { // Add it as well $encodedAuth = base64_encode(compileRawCode(getProxyUsername()) . ':' . compileRawCode(getProxyPassword())); $proxyTunnel .= 'Proxy-Authorization: Basic ' . $encodedAuth . getConfig('HTTP_EOL'); } // END - if // Add last new-line $proxyTunnel .= getConfig('HTTP_EOL'); //* DEBUG: */ debugOutput('proxyTunnel=
' . $proxyTunnel.'
'); // Write request fwrite($fp, $proxyTunnel); // Got response? if (feof($fp)) { // No response received return $response; } // END - if // Read the first line $resp = trim(fgets($fp, 10240)); $respArray = explode(' ', $resp); if ((strtolower($respArray[0]) !== 'http/1.0') || ($respArray[1] != '200')) { // Invalid response! return $response; } // END - if // All fine! return $respArray; } // Check array for chuncked encoding function unchunkHttpResponse ($response) { // Default is not chunked $isChunked = false; // Check if we have chunks foreach ($response as $line) { // Make lower-case and trim it $line = trim($line); // Entry found? if ((isInStringIgnoreCase('transfer-encoding', $line)) && (isInStringIgnoreCase('chunked', $line))) { // Found! $isChunked = true; break; } // END - if } // END - foreach // Is it chunked? if ($isChunked === true) { // Good, we still have the HTTP headers in there, so we need to get rid // of them temporarly //* DEBUG: */ die('
'.htmlentities(print_r(removeHttpHeaderFromResponse($response), true)).'
'); $tempResponse = http_chunked_decode(implode('', removeHttpHeaderFromResponse($response))); // We got a string back from http_chunked_decode(), so we need to convert it back to an array //* DEBUG: */ die('tempResponse['.strlen($tempResponse).']=
'.replaceReturnNewLine(htmlentities($tempResponse)).'
'); // Re-add the headers $response = merge_array($GLOBALS['http_headers'], stringToArray("\n", $tempResponse)); } // END - if // Return the unchunked array return $response; } // Removes HTTP header lines from a response array (e.g. output from sendRequest() ) function removeHttpHeaderFromResponse ($response) { // Save headers for later usage $GLOBALS['http_headers'] = array(); // The first array element has to contain HTTP if ((isset($response[0])) && (substr(strtoupper($response[0]), 0, 5) == 'HTTP/')) { // Okay, we have headers, now remove them with a second array $response2 = $response; foreach ($response as $line) { // Remove line array_shift($response2); // Add full line to temporary global array $GLOBALS['http_headers'][] = $line; // Trim it for testing $lineTest = trim($line); // Is this line empty? if (empty($lineTest)) { // Then stop here break; } // END - if } // END - foreach // Write back the array $response = $response2; } // END - if // Return the modified response array return $response; } // Returns the flag if a broken HTTP server implementation was detected function isBrokenHttpServerImplentation () { // Determine it $isBroken = ((isset($GLOBALS['is_http_server_broken'])) && ($GLOBALS['is_http_server_broken'] === true)); // ... and return it return $isBroken; } //----------------------------------------------------------------------------- // Automatically re-created functions, all taken from user comments on www.php.net //----------------------------------------------------------------------------- if (!function_exists('http_build_query')) { // Taken from documentation on www.php.net, credits to Marco K. (Germany) and some light mods by R.Haeder function http_build_query($requestData, $prefix = '', $sep = '', $key = '') { $ret = array(); foreach ((array) $requestData as $k => $v) { if (is_int($k) && $prefix != null) { $k = urlencode($prefix . $k); } // END - if if ((!empty($key)) || ($key === 0)) { $k = $key . '[' . urlencode($k) . ']'; } // END - if if (is_array($v) || is_object($v)) { array_push($ret, http_build_query($v, '', $sep, $k)); } else { array_push($ret, $k . '=' . urlencode($v)); } } // END - foreach if (empty($sep)) { $sep = ini_get('arg_separator.output'); } // END - if return implode($sep, $ret); } } // END - if if (!function_exists('http_chunked_decode')) { /** * dechunk an HTTP 'transfer-encoding: chunked' message. * * @param $chunk The encoded message * @return $dechunk The decoded message. If $chunk wasn't encoded properly debug_report_bug() is being called * @author Marques Johansson (initial author) * @author Roland Haeder (heavy modifications and simplification) * @link http://php.net/manual/en/function.http-chunked-decode.php#89786 */ function http_chunked_decode ($chunk) { // Detect multi-byte encoding $mbPrefix = detectMultiBytePrefix($chunk); //* DEBUG: */ print 'mbPrefix=' . $mbPrefix . '
'; // Init some variables $offset = 0; $len = call_user_func_array($mbPrefix . 'strlen', array(($chunk))); $dechunk = ''; // Walk through all chunks while ($offset < $len) { // Where does the \r\n begin? $lineEndAt = call_user_func_array($mbPrefix . 'strpos', array($chunk, getConfig('HTTP_EOL'), $offset)); /* DEBUG: * print 'lineEndAt['.__LINE__.']='.$lineEndAt.'
offset['.__LINE__.']='.$offset.'
len='.$len.'
next[offset,10]=
'.replaceReturnNewLine(htmlentities(call_user_func_array($mbPrefix . 'substr', array($chunk, $offset, 10)))).'
'; /* DEBUG: */ // Get next hex-coded chunk length $chunkLenHex = call_user_func_array($mbPrefix . 'substr', array($chunk, $offset, ($lineEndAt - $offset))); /* DEBUG: * print 'chunkLenHex['.__LINE__.']='.replaceReturnNewLine(htmlentities($chunkLenHex)).'
'; /* DEBUG: */ // Validation if it is hexadecimal if (!isHexadecimal($chunkLenHex)) { // Please help debugging this //* DEBUG: */ die('ABORT:chunkLenHex=
'.replaceReturnNewLine(htmlentities($chunkLenHex)).'
'); debug_report_bug(__FUNCTION__, __LINE__, 'Value ' . $chunkLenHex . ' is no valid hexa-decimal string.'); // This won't be reached return $chunk; } // END - if // Position of next chunk is right after \r\n $offset = $offset + strlen($chunkLenHex) + strlen(getConfig('HTTP_EOL')); $chunkLen = hexdec(rtrim($chunkLenHex, getConfig('HTTP_EOL'))); /* DEBUG: * print 'chunkLen='.$chunkLen.'
offset['.__LINE__.']='.$offset.'
'; /* DEBUG: */ // Moved out for debugging $next = call_user_func_array($mbPrefix . 'substr', array($chunk, $offset, $chunkLen)); //* DEBUG: */ print 'next=
'.replaceReturnNewLine(htmlentities($next)).'
'; /* * Hack for e.g. YaCy HTTPDaemon (Anomic Server), this HTTP server * is currently (revision 7567 and maybe earlier) broken and does * not include the \r\n characters when it sents a "chunked" HTTP * message. */ $count = 0; if (isBrokenHttpServerImplentation()) { // Count occurrences of \r\n $count = call_user_func_array($mbPrefix . 'substr_count', array($next, getConfig('HTTP_EOL'))); } // END - if /* * Correct chunk length because some broken HTTP server * implementation subtract occurrences of \r\n in their chunk * lengths. */ $chunkLen = hexdec(rtrim($chunkLenHex, getConfig('HTTP_EOL'))) - ($count * strlen(getConfig('HTTP_EOL'))); // Add next chunk to $dechunk $dechunk .= call_user_func_array($mbPrefix . 'substr', array($chunk, $offset, $chunkLen)); /* DEBUG: * print('offset['.__LINE__.']='.$offset.'
lineEndAt['.__LINE__.']='.$lineEndAt.'
len='.$len.'
count='.$count.'
chunkLen='.$chunkLen.'
chunkLenHex='.$chunkLenHex.'
dechunk=
'.replaceReturnNewLine(htmlentities($dechunk)).'
chunk=
'.replaceReturnNewLine(htmlentities($chunk)).'
'); /* DEBUG: */ // Is $offset + $chunkLen larger than or equal $len? if (($offset + $chunkLen) >= $len) { // Then stop processing here break; } // END - if // Calculate offset of next chunk $offset = call_user_func_array($mbPrefix . 'strpos', array($chunk, getConfig('HTTP_EOL'), $offset + $chunkLen)) + 2; /* DEBUG: * print('offset['.__LINE__.']='.$offset.'
next[100]=
'.replaceReturnNewLine(htmlentities(call_user_func_array($mbPrefix . 'substr', array($chunk, $offset, 100)))).'
---:---:---:---:---:---:---:---:---
'); /* DEBUG: */ } // END - while // Return de-chunked string return $dechunk; } } // END - if // Extract host from script name function extractHostnameFromUrl (&$script) { // Use default SERVER_URL by default... ;) So? $url = getServerUrl(); // Is this URL valid? if (substr($script, 0, 7) == 'http://') { // Use the hostname from script URL as new hostname $url = substr($script, 7); $extract = explode('/', $url); $url = $extract[0]; // Done extracting the URL :) } // END - if // Extract host name $host = str_replace('http://', '', $url); if (isInString('/', $host)) { $host = substr($host, 0, strpos($host, '/')); } // END - if // Generate relative URL //* DEBUG: */ debugOutput('SCRIPT=' . $script); if (substr(strtolower($script), 0, 7) == 'http://') { // But only if http:// is in front! $script = substr($script, (strlen($url) + 7)); } elseif (substr(strtolower($script), 0, 8) == 'https://') { // Does this work?! $script = substr($script, (strlen($url) + 8)); } //* DEBUG: */ debugOutput('SCRIPT=' . $script); if (substr($script, 0, 1) == '/') { $script = substr($script, 1); } // END - if // Return host name return $host; } // [EOF] ?>