X-Git-Url: https://git.p6c8.net/jirafeau_mojo42.git/blobdiff_plain/11e172891035764434fbf06bc4a6f1ff0b04fdca..7f61e026f87a7f731fc915581b720a17756aa054:/lib/functions.php diff --git a/lib/functions.php b/lib/functions.php old mode 100755 new mode 100644 index d70a17c..6c9c832 --- a/lib/functions.php +++ b/lib/functions.php @@ -2,7 +2,8 @@ /* * Jirafeau, your web file repository * Copyright (C) 2008 Julien "axolotl" BERNARD - * Copyright (C) 2012 Jerome Jutteau + * Copyright (C) 2015 Jerome Jutteau + * Copyright (C) 2015 Nicola Spanti (RyDroid) * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU Affero General Public License as @@ -15,12 +16,12 @@ * GNU Affero General Public License for more details. * * You should have received a copy of the GNU Affero General Public License - * along with this program. If not, see . + * along with this program. If not, see . */ /** * Transform a string in a path by seperating each letters by a '/'. - * @return path finishing with a '/' + * @return path finishing with a '/' */ function s2p ($s) @@ -39,23 +40,23 @@ function base_16_to_64 ($num) { $m = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ-_'; - $hex2bin = array ('0000', # 0 - '0001', # 1 - '0010', # 2 - '0011', # 3 - '0100', # 4 - '0101', # 5 - '0110', # 6 - '0111', # 7 - '1000', # 8 - '1001', # 9 - '1010', # a - '1011', # b - '1100', # c - '1101', # d - '1110', # e - '1111'); # f - $o = ''; + $hex2bin = array ('0000', # 0 + '0001', # 1 + '0010', # 2 + '0011', # 3 + '0100', # 4 + '0101', # 5 + '0110', # 6 + '0111', # 7 + '1000', # 8 + '1001', # 9 + '1010', # a + '1011', # b + '1100', # c + '1101', # d + '1110', # e + '1111'); # f + $o = ''; $b = ''; $i = 0; # Convert long hex string to bin. @@ -90,6 +91,21 @@ jirafeau_gen_random ($l) return $code; } +function +is_ssl() { + if ( isset($_SERVER['HTTPS']) ) { + if ( 'on' == strtolower($_SERVER['HTTPS']) || + '1' == $_SERVER['HTTPS'] ) + return true; + } elseif ( isset($_SERVER['SERVER_PORT']) && ( '443' == $_SERVER['SERVER_PORT'] ) ) { + return true; + } elseif (isset($_SERVER['HTTP_X_FORWARDED_PROTO'])) { + if ($_SERVER['HTTP_X_FORWARDED_PROTO'] == 'https') + return true; + } + return false; +} + function jirafeau_human_size ($octets) { @@ -98,7 +114,7 @@ jirafeau_human_size ($octets) $p = min (floor (($o ? log ($o) : 0) / log (1024)), count ($u) - 1); $o /= pow (1024, $p); return round ($o, 1) . $u[$p]; -} +} function jirafeau_clean_rm_link ($link) @@ -111,7 +127,7 @@ jirafeau_clean_rm_link ($link) while (file_exists ($parse) && ($scan = scandir ($parse)) && count ($scan) == 2 // '.' and '..' folders => empty. - && basename ($parse) != basename (VAR_LINKS)) + && basename ($parse) != basename (VAR_LINKS)) { rmdir ($parse); $parse = substr ($parse, 0, strlen($parse) - strlen(basename ($parse)) - 1); @@ -122,16 +138,17 @@ function jirafeau_clean_rm_file ($md5) { $p = s2p ("$md5"); - if (file_exists (VAR_FILES . $p . $md5)) - unlink (VAR_FILES . $p . $md5); - if (file_exists (VAR_FILES . $p . $md5 . '_count')) - unlink (VAR_FILES . $p . $md5 . '_count'); + $f = VAR_FILES . $p . $md5; + if (file_exists ($f) && is_file ($f)) + unlink ($f); + if (file_exists ($f . '_count') && is_file ($f . '_count')) + unlink ($f . '_count'); $parse = VAR_FILES . $p; $scan = array(); while (file_exists ($parse) && ($scan = scandir ($parse)) && count ($scan) == 2 // '.' and '..' folders => empty. - && basename ($parse) != basename (VAR_FILES)) + && basename ($parse) != basename (VAR_FILES)) { rmdir ($parse); $parse = substr ($parse, 0, strlen($parse) - strlen(basename ($parse)) - 1); @@ -143,7 +160,8 @@ jirafeau_clean_rm_file ($md5) * @param $value the value from php.ini * @returns an integer for this value */ -function jirafeau_ini_to_bytes ($value) +function +jirafeau_ini_to_bytes ($value) { $modifier = substr ($value, -1); $bytes = substr ($value, 0, -1); @@ -159,8 +177,6 @@ function jirafeau_ini_to_bytes ($value) $bytes *= 1024; case 'K': $bytes *= 1024; - default: - break; } return $bytes; } @@ -201,23 +217,16 @@ jirafeau_upload_errstr ($code) case UPLOAD_ERR_INI_SIZE: case UPLOAD_ERR_FORM_SIZE: return t('Your file exceeds the maximum authorized file size. '); - break; case UPLOAD_ERR_PARTIAL: case UPLOAD_ERR_NO_FILE: return - t - ('Your file was not uploaded correctly. You may succeed in retrying. '); - break; + t('Your file was not uploaded correctly. You may succeed in retrying. '); case UPLOAD_ERR_NO_TMP_DIR: case UPLOAD_ERR_CANT_WRITE: case UPLOAD_ERR_EXTENSION: return t('Internal error. You may not succeed in retrying. '); - break; - - default: - break; } return t('Unknown error. '); } @@ -275,7 +284,7 @@ jirafeau_delete_file ($md5) if (strcmp ($node, '.') == 0 || strcmp ($node, '..') == 0 || preg_match ('/\.tmp/i', "$node")) continue; - + if (is_dir ($d . $node)) { /* Push new found directory. */ @@ -291,7 +300,7 @@ jirafeau_delete_file ($md5) { $count++; jirafeau_delete_link ($node); - } + } } } } @@ -306,13 +315,15 @@ jirafeau_delete_file ($md5) * @param $key if not empty, protect the file with this key * @param $time the time of validity of the file * @param $ip uploader's ip + * @param $crypt boolean asking to crypt or not + * @param $link_name_length size of the link name * @returns an array containing some information * 'error' => information on possible errors * 'link' => the link name of the uploaded file * 'delete_link' => the link code to delete file */ function -jirafeau_upload ($file, $one_time_download, $key, $time, $ip) +jirafeau_upload ($file, $one_time_download, $key, $time, $ip, $crypt, $link_name_length) { if (empty ($file['tmp_name']) || !is_uploaded_file ($file['tmp_name'])) { @@ -327,6 +338,18 @@ jirafeau_upload ($file, $one_time_download, $key, $time, $ip) /* array representing no error */ $noerr = array ('has_error' => false, 'why' => ''); + /* Crypt file if option is enabled. */ + $crypted = false; + $crypt_key = ''; + if ($crypt == true && !(extension_loaded('mcrypt') == true)) + error_log ("PHP extension mcrypt not loaded, won't encrypt in Jirafeau"); + if ($crypt == true && extension_loaded('mcrypt') == true) + { + $crypt_key = jirafeau_encrypt_file ($file['tmp_name'], $file['tmp_name']); + if (strlen($crypt_key) > 0) + $crypted = true; + } + /* file informations */ $md5 = md5_file ($file['tmp_name']); $name = str_replace (NL, '', trim ($file['name'])); @@ -368,29 +391,29 @@ jirafeau_upload ($file, $one_time_download, $key, $time, $ip) fclose ($handle); /* Create delete code. */ - $delete_link_code = jirafeau_gen_random (8); + $delete_link_code = jirafeau_gen_random (5); - /* md5 password or empty */ + /* md5 password or empty. */ $password = ''; if (!empty ($key)) $password = md5 ($key); /* create link file */ - $link_tmp_name = VAR_LINKS . $md5 . rand (0, 10000) . ' .tmp'; + $link_tmp_name = VAR_LINKS . $md5 . rand (0, 10000) . '.tmp'; $handle = fopen ($link_tmp_name, 'w'); fwrite ($handle, $name . NL. $mime_type . NL. $size . NL. $password . NL. $time . - NL . $md5. NL . ($one_time_download ? 'O' : 'R') . NL . date ('U') . - NL . $ip . NL. $delete_link_code . NL); + NL . $md5. NL . ($one_time_download ? 'O' : 'R') . NL . time () . + NL . $ip . NL. $delete_link_code . NL . ($crypted ? 'C' : 'O')); fclose ($handle); - $md5_link = base_16_to_64 (md5_file ($link_tmp_name)); + $md5_link = substr(base_16_to_64 (md5_file ($link_tmp_name)), 0, $link_name_length); $l = s2p ("$md5_link"); if (!@mkdir (VAR_LINKS . $l, 0755, true) || !rename ($link_tmp_name, VAR_LINKS . $l . $md5_link)) { if (file_exists ($link_tmp_name)) unlink ($link_tmp_name); - + $counter--; if ($counter >= 1) { @@ -402,20 +425,21 @@ jirafeau_upload ($file, $one_time_download, $key, $time, $ip) { jirafeau_clean_rm_file ($md5_link); } - return (array( + return array( 'error' => array ('has_error' => true, 'why' => t('Internal error during file creation. ')), 'link' =>'', - 'delete_link' => '')); + 'delete_link' => ''); } - return (array ('error' => $noerr, + return array ( 'error' => $noerr, 'link' => $md5_link, - 'delete_link' => $delete_link_code)); + 'delete_link' => $delete_link_code, + 'crypt_key' => $crypt_key); } /** - * tells if a mime-type is viewable in a browser + * Tells if a mime-type is viewable in a browser * @param $mime the mime type * @returns a boolean telling if a mime type is viewable */ @@ -425,7 +449,7 @@ jirafeau_is_viewable ($mime) if (!empty ($mime)) { /* Actually, verify if mime-type is an image or a text. */ - $viewable = array ('image', 'text'); + $viewable = array ('image', 'text', 'video', 'audio'); $decomposed = explode ('/', $mime); return in_array ($decomposed[0], $viewable); } @@ -477,12 +501,12 @@ show_errors () } } -function check_errors () +function check_errors ($cfg) { if (file_exists (JIRAFEAU_ROOT . 'install.php') - && !file_exists (JIRAFEAU_ROOT . 'lib/config.local.php')) + && !($cfg['installation_done'] === true)) { - header('Location: install.php'); + header('Location: install.php'); exit; } @@ -495,15 +519,9 @@ function check_errors () if (!is_writable (VAR_LINKS)) add_error (t('The link directory is not writable!'), VAR_LINKS); - + if (!is_writable (VAR_ASYNC)) add_error (t('The async directory is not writable!'), VAR_ASYNC); - - /* Check if the install.php script is still in the directory. */ - if (file_exists (JIRAFEAU_ROOT . 'install.php')) - add_error (t('Installer script still present'), - t('Please make sure to delete the installer script ' . - '"install.php" before continuing.')); } /** @@ -518,7 +536,7 @@ jirafeau_get_link ($hash) if (!file_exists ($link)) return $out; - + $c = file ($link); $out['file_name'] = trim ($c[0]); $out['mime_type'] = trim ($c[1]); @@ -530,7 +548,8 @@ jirafeau_get_link ($hash) $out['upload_date'] = trim ($c[7]); $out['ip'] = trim ($c[8]); $out['link_code'] = trim ($c[9]); - + $out['crypted'] = trim ($c[10]) == 'C'; + return $out; } @@ -585,7 +604,7 @@ jirafeau_admin_list ($name, $file_hash, $link_hash) continue; /* Filter. */ - if (!empty ($name) && !preg_match ("/$name/i", $l['file_name'])) + if (!empty ($name) && !preg_match ("/$name/i", htmlspecialchars($l['file_name']))) continue; if (!empty ($file_hash) && $file_hash != $l['md5']) continue; @@ -594,21 +613,28 @@ jirafeau_admin_list ($name, $file_hash, $link_hash) /* Print link informations. */ echo ''; echo '' . - '
' . - '' . - '' . - '' . - '
'; + '' . htmlspecialchars($l['file_name']) . ''; echo ''; echo '' . $l['mime_type'] . ''; echo '' . jirafeau_human_size ($l['file_size']) . ''; echo '' . ($l['time'] == -1 ? '' : strftime ('%c', $l['time'])) . ''; - echo '' . $l['onetime'] . ''; + echo ''; + if ($l['onetime'] == 'O') + echo 'Y'; + else + echo 'N'; + echo ''; echo '' . strftime ('%c', $l['upload_date']) . ''; echo '' . $l['ip'] . ''; echo '' . '
' . + '' . + '' . + '' . + '
' . + '
' . '' . '' . '' . @@ -645,7 +671,7 @@ jirafeau_admin_clean () if (strcmp ($node, '.') == 0 || strcmp ($node, '..') == 0 || preg_match ('/\.tmp/i', "$node")) continue; - + if (is_dir ($d . $node)) { /* Push new found directory. */ @@ -691,7 +717,7 @@ jirafeau_admin_clean_async () if (strcmp ($node, '.') == 0 || strcmp ($node, '..') == 0 || preg_match ('/\.tmp/i', "$node")) continue; - + if (is_dir ($d . $node)) { /* Push new found directory. */ @@ -704,7 +730,7 @@ jirafeau_admin_clean_async () if (!count ($a)) continue; /* Delete transferts older than 1 hour. */ - if (date ('U') - $a['last_edited'] > 3600) + if (time () - $a['last_edited'] > 3600) { jirafeau_async_delete (basename ($node)); $count++; @@ -726,7 +752,7 @@ jirafeau_get_async_ref ($ref) if (!file_exists ($refinfos)) return $out; - + $c = file ($refinfos); $out['file_name'] = trim ($c[0]); $out['mime_type'] = trim ($c[1]); @@ -741,7 +767,7 @@ jirafeau_get_async_ref ($ref) /** * Delete async transfert informations - */ + */ function jirafeau_async_delete ($ref) { @@ -755,7 +781,7 @@ jirafeau_async_delete ($ref) while (file_exists ($parse) && ($scan = scandir ($parse)) && count ($scan) == 2 // '.' and '..' folders => empty. - && basename ($parse) != basename (VAR_ASYNC)) + && basename ($parse) != basename (VAR_ASYNC)) { rmdir ($parse); $parse = substr ($parse, 0, strlen($parse) - strlen(basename ($parse)) - 1); @@ -769,7 +795,7 @@ jirafeau_async_delete ($ref) * @param $key eventual password (or blank) * @param $time time limit * @param $ip ip address of the client - * @return a string containing a temporary reference followed by a code or the string "Error" + * @return a string containing a temporary reference followed by a code or the string 'Error' */ function jirafeau_async_init ($filename, $type, $one_time, $key, $time, $ip) @@ -788,10 +814,10 @@ jirafeau_async_init ($filename, $type, $one_time, $key, $time, $ip) @mkdir ($p, 0755, true); if (!file_exists ($p)) { - echo "Error"; + echo 'Error'; return; } - + /* md5 password or empty */ $password = ''; if (!empty ($key)) @@ -801,9 +827,10 @@ jirafeau_async_init ($filename, $type, $one_time, $key, $time, $ip) $p .= $ref; $handle = fopen ($p, 'w'); fwrite ($handle, - str_replace (NL, '', trim ($filename)) . NL. trim ($type) . NL. $password . NL. $time . NL . - ($one_time ? 'O' : 'R') . NL . $ip . NL . date ('U') . NL . - $code . NL); + str_replace (NL, '', trim ($filename)) . NL . + str_replace (NL, '', trim ($type)) . NL . $password . NL . + $time . NL . ($one_time ? 'O' : 'R') . NL . $ip . NL . + time () . NL . $code . NL); fclose ($handle); return $ref . NL . $code ; @@ -814,26 +841,39 @@ jirafeau_async_init ($filename, $type, $one_time, $key, $time, $ip) * @param $ref asynchronous upload reference * @param $file piece of data * @param $code client code for this operation - * @return a string containing a next code to use or the string "Error" + * @param $max_file_size maximum allowed file size + * @return a string containing a next code to use or the string "Error" */ function -jirafeau_async_push ($ref, $data, $code) +jirafeau_async_push ($ref, $data, $code, $max_file_size) { /* Get async infos. */ $a = jirafeau_get_async_ref ($ref); - + /* Check some errors. */ if (count ($a) == 0 || $a['next_code'] != "$code" || empty ($data['tmp_name']) || !is_uploaded_file ($data['tmp_name'])) - return "Error"; - + return 'Error'; + $p = s2p ($ref); + /* File path. */ + $r_path = $data['tmp_name']; + $w_path = VAR_ASYNC . $p . $ref . '_data'; + + /* Check that file size is not above upload limit. */ + if ($max_file_size > 0 && + filesize ($r_path) + filesize ($w_path) > $max_file_size * 1024 * 1024) + { + jirafeau_async_delete ($ref); + return 'Error'; + } + /* Concatenate data. */ - $r = fopen ($data['tmp_name'], 'r'); - $w = fopen (VAR_ASYNC . $p . $ref . '_data', 'a'); + $r = fopen ($r_path, 'r'); + $w = fopen ($w_path, 'a'); while (!feof ($r)) { if (fwrite ($w, fread ($r, 1024)) === false) @@ -841,20 +881,20 @@ jirafeau_async_push ($ref, $data, $code) fclose ($r); fclose ($w); jirafeau_async_delete ($ref); - return "Error"; + return 'Error'; } } fclose ($r); fclose ($w); - unlink ($data['tmp_name']); - + unlink ($r_path); + /* Update async file. */ $code = jirafeau_gen_random (4); $handle = fopen (VAR_ASYNC . $p . $ref, 'w'); fwrite ($handle, $a['file_name'] . NL. $a['mime_type'] . NL. $a['key'] . NL . $a['time'] . NL . $a['onetime'] . NL . $a['ip'] . NL . - date ('U') . NL . $code . NL); + time () . NL . $code . NL); fclose ($handle); return $code; } @@ -863,32 +903,44 @@ jirafeau_async_push ($ref, $data, $code) * Finalyze an asynchronous upload. * @param $ref asynchronous upload reference * @param $code client code for this operation - * @return a string containing the download reference followed by a delete code or the string "Error" + * @param $crypt boolean asking to crypt or not + * @param $link_name_length link name length + * @return a string containing the download reference followed by a delete code or the string 'Error' */ function -jirafeau_async_end ($ref, $code) +jirafeau_async_end ($ref, $code, $crypt, $link_name_length) { /* Get async infos. */ $a = jirafeau_get_async_ref ($ref); if (count ($a) == 0 || $a['next_code'] != "$code") return "Error"; - + /* Generate link infos. */ $p = VAR_ASYNC . s2p ($ref) . $ref . "_data"; if (!file_exists($p)) - return "Error"; + return 'Error'; + + $crypted = false; + $crypt_key = ''; + if ($crypt == true && extension_loaded('mcrypt') == true) + { + $crypt_key = jirafeau_encrypt_file ($p, $p); + if (strlen($crypt_key) > 0) + $crypted = true; + } + $md5 = md5_file ($p); $size = filesize($p); $np = s2p ($md5); - $delete_link_code = jirafeau_gen_random (8); - - /* File already exist ? */ + $delete_link_code = jirafeau_gen_random (5); + + /* File already exist ? */ if (!file_exists (VAR_FILES . $np)) @mkdir (VAR_FILES . $np, 0755, true); if (!file_exists (VAR_FILES . $np . $md5)) rename ($p, VAR_FILES . $np . $md5); - + /* Increment or create count file. */ $counter = 0; if (file_exists (VAR_FILES . $np . $md5 . '_count')) @@ -900,23 +952,440 @@ jirafeau_async_end ($ref, $code) $handle = fopen (VAR_FILES . $np . $md5. '_count', 'w'); fwrite ($handle, $counter); fclose ($handle); - + /* Create link. */ - $link_tmp_name = VAR_LINKS . $md5 . rand (0, 10000) . ' .tmp'; + $link_tmp_name = VAR_LINKS . $md5 . rand (0, 10000) . '.tmp'; $handle = fopen ($link_tmp_name, 'w'); fwrite ($handle, $a['file_name'] . NL . $a['mime_type'] . NL . $size . NL . $a['key'] . NL . $a['time'] . NL . $md5 . NL . $a['onetime'] . NL . - date ('U') . NL . $a['ip'] . NL . $delete_link_code . NL); + time () . NL . $a['ip'] . NL . $delete_link_code . NL . ($crypted ? 'C' : 'O')); fclose ($handle); - $md5_link = base_16_to_64 (md5_file ($link_tmp_name)); + $md5_link = substr(base_16_to_64 (md5_file ($link_tmp_name)), 0, $link_name_length); $l = s2p ("$md5_link"); if (!@mkdir (VAR_LINKS . $l, 0755, true) || !rename ($link_tmp_name, VAR_LINKS . $l . $md5_link)) echo "Error"; - + /* Clean async upload. */ jirafeau_async_delete ($ref); - return $md5_link . NL . $delete_link_code; + return $md5_link . NL . $delete_link_code . NL . urlencode($crypt_key); +} + +function +jirafeau_crypt_create_iv($base, $size) +{ + $iv = ''; + while (strlen ($iv) < $size) + $iv = $iv . $base; + $iv = substr($iv, 0, $size); + return $iv; +} + +/** + * Crypt file and returns decrypt key. + * @param $fp_src file path to the file to crypt. + * @param $fp_dst file path to the file to write crypted file (could be the same). + * @return decrypt key composed of the key and the iv separated by a point ('.') + */ +function +jirafeau_encrypt_file ($fp_src, $fp_dst) +{ + $fs = filesize ($fp_src); + if ($fs === false || $fs == 0 || !(extension_loaded('mcrypt') == true)) + return ''; + + /* Prepare module. */ + $m = mcrypt_module_open('rijndael-256', '', 'ofb', ''); + /* Generate key. */ + $crypt_key = jirafeau_gen_random (10); + $md5_key = md5($crypt_key); + $iv = jirafeau_crypt_create_iv ($md5_key, mcrypt_enc_get_iv_size($m)); + /* Init module. */ + mcrypt_generic_init($m, $md5_key, $iv); + /* Crypt file. */ + $r = fopen ($fp_src, 'r'); + $w = fopen ($fp_dst, 'c'); + while (!feof ($r)) + { + $enc = mcrypt_generic($m, fread ($r, 1024)); + if (fwrite ($w, $enc) === false) + return ''; + } + fclose ($r); + fclose ($w); + /* Cleanup. */ + mcrypt_generic_deinit($m); + mcrypt_module_close($m); + return $crypt_key; +} + +/** + * Decrypt file. + * @param $fp_src file path to the file to decrypt. + * @param $fp_dst file path to the file to write decrypted file (could be the same). + * @param $k string composed of the key and the iv separated by a point ('.') + * @return key used to decrypt. a string of length 0 is returned if failed. + */ +function +jirafeau_decrypt_file ($fp_src, $fp_dst, $k) +{ + $fs = filesize ($fp_src); + if ($fs === false || $fs == 0 || extension_loaded('mcrypt') == false) + return false; + + /* Init module */ + $m = mcrypt_module_open('rijndael-256', '', 'ofb', ''); + /* Extract key and iv. */ + $crypt_key = $k; + $md5_key = md5($crypt_key); + $iv = jirafeau_crypt_create_iv ($md5_key, mcrypt_enc_get_iv_size($m)); + /* Decrypt file. */ + $r = fopen ($fp_src, 'r'); + $w = fopen ($fp_dst, 'c'); + while (!feof ($r)) + { + $dec = mdecrypt_generic($m, fread ($r, 1024)); + if (fwrite ($w, $dec) === false) + return false; + } + fclose ($r); + fclose ($w); + /* Cleanup. */ + mcrypt_generic_deinit($m); + mcrypt_module_close($m); + return true; +} + +/** + * Check if Jirafeau is password protected for visitors. + * @return true if Jirafeau is password protected, false otherwise. + */ +function +jirafeau_has_upload_password ($cfg) +{ + return count ($cfg['upload_password']) > 0; +} + +/** + * Challenge password for a visitor. + * @param $password password to be challenged + * @return true if password is valid, false otherwise. + */ +function +jirafeau_challenge_upload_password ($cfg, $password) +{ + if (!jirafeau_has_upload_password($cfg)) + return false; + forEach ($cfg['upload_password'] as $p) + if ($password == $p) + return true; + return false; +} + +/** + * Test if visitor's IP is authorized to upload. + * @param $ip IP to be challenged + * @return true if IP is authorized, false otherwise. + */ +function +jirafeau_challenge_upload_ip ($cfg, $ip) +{ + if (count ($cfg['upload_ip']) == 0) + return true; + forEach ($cfg['upload_ip'] as $i) + { + if ($i == $ip) + return true; + // CIDR test for IPv4 only. + if (strpos ($i, '/') !== false) + { + list ($subnet, $mask) = explode('/', $i); + if ((ip2long ($ip) & ~((1 << (32 - $mask)) - 1) ) == ip2long ($subnet)) + return true; + } + } + return false; +} + +/** Tell if we have some HTTP headers generated by a proxy */ +function +has_http_forwarded() +{ + return + !empty ($_SERVER['HTTP_X_FORWARDED_FOR']) || + !empty ($_SERVER['http_X_forwarded_for']); } -?> + +/** + * Generate IP list from HTTP headers generated by a proxy + * @return array of IP strings + */ +function +get_ip_list_http_forwarded() +{ + $ip_list = array(); + if (!empty ($_SERVER['HTTP_X_FORWARDED_FOR'])) + { + $l = explode (',', $_SERVER['HTTP_X_FORWARDED_FOR']); + if ($l === FALSE) + return array(); + foreach ($l as $ip) + array_push ($ip_list, preg_replace ('/\s+/', '', $ip)); + } + if (!empty ($_SERVER['http_X_forwarded_for'])) + { + $l = explode (',', $_SERVER['http_X_forwarded_for']); + foreach ($l as $ip) + { + // Separate IP from port + $ipa = explode (':', $ip); + if ($ipa === FALSE) + continue; + $ip = $ipa[0]; + array_push ($ip_list, preg_replace ('/\s+/', '', $ip)); + } + } + return $ip_list; +} + +/** + * Get the ip address of the client from REMOTE_ADDR + * or from HTTP_X_FORWARDED_FOR if behind a proxy + * @returns the client ip address + */ +function +get_ip_address($cfg) +{ + $remote = $_SERVER['REMOTE_ADDR']; + if (count ($cfg['proxy_ip']) == 0 || !has_http_forwarded ()) + return $remote; + + $ip_list = get_ip_list_http_forwarded (); + if (count ($ip_list) == 0) + return $remote; + + foreach ($cfg['proxy_ip'] as $proxy_ip) + { + if ($remote != $proxy_ip) + continue; + // Take the last IP (the one which has been set by the defined proxy). + return end ($ip_list); + } + return $remote; +} + +/** + * Convert hexadecimal string to base64 + */ +function hex_to_base64($hex) +{ + $b = ''; + foreach (str_split ($hex, 2) as $pair) + $b .= chr (hexdec ($pair)); + return base64_encode ($b); +} + +/** + * Read alias informations + * @return array containing informations. + */ +function +jirafeau_get_alias ($hash) +{ + $out = array (); + $link = VAR_ALIAS . s2p ("$hash") . $hash; + + if (!file_exists ($link)) + return $out; + + $c = file ($link); + $out['md5_password'] = trim ($c[0]); + $out['ip'] = trim ($c[1]); + $out['update_date'] = trim ($c[2]); + $out['destination'] = trim ($c[3], NL); + + return $out; +} + +/** Create an alias to a jirafeau's link. + * @param $alias alias name + * @param $destination reference of the destination + * @param $password password to protect alias + * @param $ip client's IP + * @return a string containing the edit code of the alias or the string "Error" + */ +function +jirafeau_alias_create ($alias, $destination, $password, $ip) +{ + /* Check that alias and password are long enough. */ + if (strlen ($alias) < 8 || + strlen ($alias) > 32 || + strlen ($password) < 8 || + strlen ($password) > 32) + return 'Error'; + + /* Check that destination exists. */ + $l = jirafeau_get_link ($destination); + if (!count ($l)) + return 'Error'; + + /* Check that alias does not already exists. */ + $alias = md5 ($alias); + $p = VAR_ALIAS . s2p ($alias); + if (file_exists ($p)) + return 'Error'; + + /* Create alias folder. */ + @mkdir ($p, 0755, true); + if (!file_exists ($p)) + return 'Error'; + + /* Generate password. */ + $md5_password = md5 ($password); + + /* Store informations. */ + $p .= $alias; + $handle = fopen ($p, 'w'); + fwrite ($handle, + $md5_password . NL . + $ip . NL . + time () . NL . + $destination . NL); + fclose ($handle); + + return 'Ok'; +} + +/** Update an alias. + * @param $alias alias to update + * @param $destination reference of the new destination + * @param $password password to protect alias + * @param $new_password optional new password to protect alias + * @param $ip client's IP + * @return "Ok" or "Error" string + */ +function +jirafeau_alias_update ($alias, $destination, $password, + $new_password, $ip) +{ + $alias = md5 ($alias); + /* Check that alias exits. */ + $a = jirafeau_get_alias ($alias); + if (!count ($a)) + return 'Error'; + + /* Check that destination exists. */ + $l = jirafeau_get_link ($a["destination"]); + if (!count ($l)) + return 'Error'; + + /* Check password. */ + if ($a["md5_password"] != md5 ($password)) + return 'Error'; + + $p = $a['md5_password']; + if (strlen ($new_password) >= 8 && + strlen ($new_password) <= 32) + $p = md5 ($new_password); + else if (strlen ($new_password) > 0) + return 'Error'; + + /* Rewrite informations. */ + $p = VAR_ALIAS . s2p ($alias) . $alias; + $handle = fopen ($p, 'w'); + fwrite ($handle, + $p . NL . + $ip . NL . + time () . NL . + $destination . NL); + fclose ($handle); + return 'Ok'; +} + +/** Get an alias. + * @param $alias alias to get + * @return alias destination or "Error" string + */ +function +jirafeau_alias_get ($alias) +{ + $alias = md5 ($alias); + /* Check that alias exits. */ + $a = jirafeau_get_alias ($alias); + if (!count ($a)) + return 'Error'; + + return $a['destination']; +} + +function +jirafeau_clean_rm_alias ($alias) +{ + $p = s2p ("$alias"); + if (file_exists (VAR_ALIAS . $p . $alias)) + unlink (VAR_ALIAS . $p . $alias); + $parse = VAR_ALIAS . $p; + $scan = array(); + while (file_exists ($parse) + && ($scan = scandir ($parse)) + && count ($scan) == 2 // '.' and '..' folders => empty. + && basename ($parse) != basename (VAR_ALIAS)) + { + rmdir ($parse); + $parse = substr ($parse, 0, strlen($parse) - strlen(basename ($parse)) - 1); + } +} + +/** Delete an alias. + * @param $alias alias to delete + * @param $password password to protect alias + * @return "Ok" or "Error" string + */ +function +jirafeau_alias_delete ($alias, $password) +{ + $alias = md5 ($alias); + /* Check that alias exits. */ + $a = jirafeau_get_alias ($alias); + if (!count ($a)) + return "Error"; + + /* Check password. */ + if ($a["md5_password"] != md5 ($password)) + return 'Error'; + + jirafeau_clean_rm_alias ($alias); + return 'Ok'; +} + +/** + * Replace markers in templates. + * + * Available markers have the scheme "###MARKERNAME###". + * + * @param $content string Template text with markers + * @param $htmllinebreaks boolean Convert linebreaks to BR-Tags + * @return Template with replaced markers + */ +function +jirafeau_replace_markers ($content, $htmllinebreaks = false) +{ + $patterns = array( + '/###ORGANISATION###/', + '/###CONTACTPERSON###/', + '/###WEBROOT###/' + ); + $replacements = array( + $GLOBALS['cfg']['organisation'], + $GLOBALS['cfg']['contactperson'], + $GLOBALS['cfg']['web_root'] + ); + $content = preg_replace($patterns, $replacements, $content); + + if (true === $htmllinebreaks) { + $content = nl2br($content); + } + + return $content; +} \ No newline at end of file