X-Git-Url: https://git.p6c8.net/jirafeau.git/blobdiff_plain/6b28d8973d9d57cae8a4d1f52ec5556cbfce1840..d72f71d688234572750d55a90696a904d958ed17:/lib/functions.php diff --git a/lib/functions.php b/lib/functions.php old mode 100755 new mode 100644 index a8851aa..2c799f2 --- a/lib/functions.php +++ b/lib/functions.php @@ -2,7 +2,7 @@ /* * Jirafeau, your web file repository * Copyright (C) 2008 Julien "axolotl" BERNARD <axolotl@magieeternelle.org> - * Copyright (C) 2012 Jerome Jutteau <j.jutteau@gmail.com> + * Copyright (C) 2015 Jerome Jutteau <j.jutteau@gmail.com> * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU Affero General Public License as @@ -90,6 +90,21 @@ jirafeau_gen_random ($l) return $code; } +function is_ssl() { + if ( isset($_SERVER['HTTPS']) ) { + if ( 'on' == strtolower($_SERVER['HTTPS']) ) + return true; + if ( '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) { @@ -122,10 +137,11 @@ 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) @@ -332,7 +348,9 @@ jirafeau_upload ($file, $one_time_download, $key, $time, $ip, $crypt, $link_name /* Crypt file if option is enabled. */ $crypted = false; $crypt_key = ''; - if ($crypt == true && extension_loaded('mcrypt')) + 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) @@ -388,7 +406,7 @@ jirafeau_upload ($file, $one_time_download, $key, $time, $ip, $crypt, $link_name $password = md5 ($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. $time . @@ -428,7 +446,7 @@ jirafeau_upload ($file, $one_time_download, $key, $time, $ip, $crypt, $link_name } /** - * tells if a mime-type is viewable in a browser + * Tells if a mime-type is viewable in a browser * @param $mime the mime type * @returns a boolean telling if a mime type is viewable */ @@ -438,7 +456,7 @@ jirafeau_is_viewable ($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], $viewable); } @@ -490,10 +508,10 @@ show_errors () } } -function check_errors () +function check_errors ($cfg) { if (file_exists (JIRAFEAU_ROOT . 'install.php') - && !file_exists (JIRAFEAU_ROOT . 'lib/config.local.php')) + && !($cfg['installation_done'] === true)) { header('Location: install.php'); exit; @@ -511,15 +529,6 @@ function check_errors () if (!is_writable (VAR_ASYNC)) add_error (t('The async directory is not writable!'), VAR_ASYNC); - - if (!is_writable (VAR_BLOCK)) - add_error (t('The block directory is not writable!'), VAR_BLOCK); - - /* Check if the install.php script is still in the directory. */ - if (file_exists (JIRAFEAU_ROOT . 'install.php')) - add_error (t('Installer script still present'), - t('Please make sure to delete the installer script ' . - '"install.php" before continuing.')); } /** @@ -548,6 +557,8 @@ jirafeau_get_link ($hash) $out['link_code'] = trim ($c[9]); if (trim ($c[10]) == 'C') $out['crypted'] = true; + else + $out['crypted'] = false; return $out; } @@ -603,7 +614,7 @@ jirafeau_admin_list ($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 != $l['md5']) continue; @@ -615,7 +626,7 @@ jirafeau_admin_list ($name, $file_hash, $link_hash) '<form action = "admin.php" method = "post">' . '<input type = "hidden" name = "action" value = "download"/>' . '<input type = "hidden" name = "link" value = "' . $node . '"/>' . - '<input type = "submit" value = "' . $l['file_name'] . '" />' . + '<input type = "submit" value = "' . htmlspecialchars($l['file_name']) . '" />' . '</form>'; echo '</td>'; echo '<td>' . $l['mime_type'] . '</td>'; @@ -833,10 +844,11 @@ jirafeau_async_init ($filename, $type, $one_time, $key, $time, $ip) * @param $ref asynchronous upload reference * @param $file piece of data * @param $code client code for this operation + * @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); @@ -850,9 +862,21 @@ jirafeau_async_push ($ref, $data, $code) $p = s2p ($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 ($r, 1024)) === false) @@ -865,7 +889,7 @@ jirafeau_async_push ($ref, $data, $code) } fclose ($r); fclose ($w); - unlink ($data['tmp_name']); + unlink ($r_path); /* Update async file. */ $code = jirafeau_gen_random (4); @@ -883,7 +907,7 @@ jirafeau_async_push ($ref, $data, $code) * @param $ref asynchronous upload reference * @param $code client code for this operation * @param $crypt boolean asking to crypt or not - * @param $link_name_length link name lenght + * @param $link_name_length link name length * @return a string containing the download reference followed by a delete code or the string "Error" */ function @@ -902,9 +926,9 @@ jirafeau_async_end ($ref, $code, $crypt, $link_name_length) $crypted = false; $crypt_key = ''; - if ($crypt == true && extension_loaded('mcrypt')) + if ($crypt == true && extension_loaded('mcrypt') == true) { - $cypt_key = jirafeau_encrypt_file ($p, $p); + $crypt_key = jirafeau_encrypt_file ($p, $p); if (strlen($crypt_key) > 0) $crypted = true; } @@ -933,7 +957,7 @@ jirafeau_async_end ($ref, $code, $crypt, $link_name_length) fclose ($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 . $size . NL . @@ -951,346 +975,6 @@ jirafeau_async_end ($ref, $code, $crypt, $link_name_length) return $md5_link . NL . $delete_link_code . NL . urlencode($crypt_key); } -/** - * Delete a block. - * @param $id identifier of the block. - */ -function -jirafeau_block_delete_ ($id) -{ - $p = VAR_BLOCK . s2p ($id); - if (!file_exists ($p)) - return; - - if (file_exists ($p . $id)) - unlink ($p . $id); - if (file_exists ($p . $id . '_infos')) - unlink ($p . $id . '_infos'); - $parse = $p; - $scan = array(); - while (file_exists ($parse) - && ($scan = scandir ($parse)) - && count ($scan) == 2 // '.' and '..' folders => empty. - && basename ($parse) != basename (VAR_BLOCK)) - { - rmdir ($parse); - $parse = substr ($parse, 0, strlen($parse) - strlen(basename ($parse)) - 1); - } -} - -/** - * Create a file filled with zeros. - * @param $size size of the file. - * @return a string corresponding to an id or the string "Error" - */ -function -jirafeau_block_init ($size) -{ - if (!ctype_digit ($size) || $size <= 0) - return "Error"; - - /* Create folder. */ - $id; - do - { - $id = jirafeau_gen_random (32); - $p = VAR_BLOCK . s2p ($id); - } while (file_exists ($p)); - @mkdir ($p, 0755, true); - if (!file_exists ($p)) - { - echo "Error"; - return; - } - - /* Create block. */ - $p .= $id; - $h = fopen ($p, 'w'); - $fill = str_repeat ("\0", 1024); - for ($cnt = 0; $cnt < $size; $cnt += 1024) - { - if ($size - $cnt < 1024) - $fill = str_repeat ("\0", $size - $cnt); - if (fwrite ($h, $fill) === false) - { - fclose ($h); - jirafeau_block_delete_ ($id); - return "Error"; - } - } - fclose ($h); - - /* Generate a write/delete code. */ - $code = jirafeau_gen_random (12); - - /* Add block infos. */ - if (file_put_contents ($p . '_infos', date ('U') . NL . $size . NL . $code) === FALSE) - { - jirafeau_block_delete_ ($id); - return "Error"; - } - - return $id . NL . $code; -} - -/** Get block size in bytes. - * @param $id identifier of the block - * @return block size in bytes - */ -function -jirafeau_block_get_size ($id) -{ - $p = VAR_BLOCK . s2p ($id) . $id; - if (!file_exists ($p)) - return "Error"; - - /* Check date. */ - $f = file ($p . '_infos'); - $date = trim ($f[0]); - $block_size = trim ($f[1]); - $stored_code = trim ($f[2]); - /* Update date. */ - if (date ('U') - $date > JIRAFEAU_HOUR - && date ('U') - $date < JIRAFEAU_MONTH) - { - if (file_put_contents ($p . '_infos', date ('U') . NL . $block_size . NL . $stored_code) === FALSE) - { - jirafeau_block_delete_ ($id); - return "Error"; - } - } - /* Remove data. */ - elseif (date ('U') - $date >= JIRAFEAU_MONTH) - { - echo date ('U'). " $date "; - jirafeau_block_delete_ ($id); - return "Error"; - } - - return $block_size; -} - -/** - * Read some data in a block. - * @param $id identifier of the block - * @param $start where to read data (starting from zero). - * @param $length length to read. - * @return echo data - */ -function -jirafeau_block_read ($id, $start, $length) -{ - if (!ctype_digit ($start) || $start < 0 - || !ctype_digit ($length) || $length <= 0) - { - echo "Error"; - return; - } - - $p = VAR_BLOCK . s2p ($id) . $id; - if (!file_exists ($p)) - { - echo "Error"; - return; - } - - /* Check date. */ - $f = file ($p . '_infos'); - $date = trim ($f[0]); - $block_size = trim ($f[1]); - $stored_code = trim ($f[2]); - /* Update date. */ - if (date ('U') - $date > JIRAFEAU_HOUR - && date ('U') - $date < JIRAFEAU_MONTH) - { - if (file_put_contents ($p . '_infos', date ('U') . NL . $block_size . NL . $stored_code) === FALSE) - { - jirafeau_block_delete_ ($id); - echo "Error"; - return; - } - } - /* Remove data. */ - elseif (date ('U') - $date >= JIRAFEAU_MONTH) - { - echo date ('U'). " $date "; - jirafeau_block_delete_ ($id); - echo "Error"; - return; - } - - if ($start + $length > $block_size) - { - echo "Error"; - return; - } - - /* Read content. */ - header ('Content-Length: ' . $length); - header ('Content-Disposition: attachment'); - - $r = fopen ($p, 'r'); - if (fseek ($r, $start) != 0) - { - echo "Error"; - return; - } - $c = 1024; - for ($cnt = 0; $cnt < $length && !feof ($r); $cnt += 1024) - { - if ($length - $cnt < 1024) - $c = $length - $cnt; - print fread ($r, $c); - ob_flush(); - } - fclose ($r); -} - -/** - * Write some data in a block. - * @param $id identifier of the block - * @param $start where to writing data (starting from zero). - * @param $data data to write. - * @param $code code to allow writing. - * @return string "Ok" or string "Error". - */ -function -jirafeau_block_write ($id, $start, $data, $code) -{ - if (!ctype_digit ($start) || $start < 0 - || strlen ($code) == 0) - return "Error"; - - $p = VAR_BLOCK . s2p ($id) . $id; - if (!file_exists ($p)) - return "Error"; - - /* Check date. */ - $f = file ($p . '_infos'); - $date = trim ($f[0]); - $block_size = trim ($f[1]); - $stored_code = trim ($f[2]); - /* Update date. */ - if (date ('U') - $date > JIRAFEAU_HOUR - && date ('U') - $date < JIRAFEAU_MONTH) - { - if (file_put_contents ($p . '_infos', date ('U') . NL . $block_size . NL . $stored_code) === FALSE) - { - jirafeau_block_delete_ ($id); - return "Error"; - } - } - /* Remove data. */ - elseif (date ('U') - $date >= JIRAFEAU_MONTH) - { - jirafeau_block_delete_ ($id); - return "Error"; - } - - /* Check code. */ - if ($stored_code != $code) - { - echo "Error"; - return; - } - - /* Check data. */ - $size = $data['size']; - if ($size <= 0) - return "Error"; - if ($start + $size > $block_size) - return "Error"; - - /* Open data. */ - $r = fopen ($data['tmp_name'], 'r'); - - /* Open Block. */ - $w = fopen ($p, 'r+'); - if (fseek ($w, $start) != 0) - return "Error"; - - /* Write content. */ - $c = 1024; - for ($cnt = 0; $cnt <= $size && !feof ($w); $cnt += 1024) - { - if ($size - $cnt < 1024) - $c = $size - $cnt; - $d = fread ($r, $c); - fwrite ($w, $d); - } - fclose ($r); - fclose ($w); - unlink ($data['tmp_name']); - return "Ok"; -} - -/** - * Delete a block. - * @param $id identifier of the block. - * @param $code code to allow writing. - * @return string "Ok" or string "Error". - */ -function -jirafeau_block_delete ($id, $code) -{ - $p = VAR_BLOCK . s2p ($id) . $id; - - if (!file_exists ($p)) - return "Error"; - - $f = file ($p . '_infos'); - $date = trim ($f[0]); - $block_size = trim ($f[1]); - $stored_code = trim ($f[2]); - - if ($code != $stored_code) - return "Error"; - - jirafeau_block_delete_ ($id); - return "Ok"; -} - -/** - * Clean old unused blocks. - * @return number of cleaned blocks. - */ -function -jirafeau_admin_clean_block () -{ - $count = 0; - /* Get all blocks. */ - $stack = array (VAR_BLOCK); - while (($d = array_shift ($stack)) && $d != NULL) - { - $dir = scandir ($d); - - foreach ($dir as $node) - { - if (strcmp ($node, '.') == 0 || strcmp ($node, '..') == 0) - continue; - - if (is_dir ($d . $node)) - { - /* Push new found directory. */ - $stack[] = $d . $node . '/'; - } - elseif (is_file ($d . $node) && preg_match ('/\_infos/i', "$node")) - { - /* Read block informations. */ - $f = file ($d . $node); - $date = trim ($f[0]); - $block_size = trim ($f[1]); - if (date ('U') - $date >= JIRAFEAU_MONTH) - { - jirafeau_block_delete_ (substr($node, 0, -6)); - $count++; - } - } - } - } - return $count; -} - function jirafeau_crypt_create_iv($base, $size) { @@ -1311,7 +995,7 @@ function jirafeau_encrypt_file ($fp_src, $fp_dst) { $fs = filesize ($fp_src); - if ($fs === false || $fs == 0 || !extension_loaded('mcrypt')) + if ($fs === false || $fs == 0 || !(extension_loaded('mcrypt') == true)) return ''; /* Prepare module. */ @@ -1350,7 +1034,7 @@ function jirafeau_decrypt_file ($fp_src, $fp_dst, $k) { $fs = filesize ($fp_src); - if ($fs === false || $fs == 0 || !extension_loaded('mcrypt')) + if ($fs === false || $fs == 0 || !(extension_loaded('mcrypt') == true)) return false; /* Init module */ @@ -1376,4 +1060,121 @@ jirafeau_decrypt_file ($fp_src, $fp_dst, $k) return true; } -?> +/** + * Check if Jirafeau is password protected for visitors. + * @return true if Jirafeau is password protected, false otherwise. + */ +function jirafeau_has_upload_password ($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() +{ + if (!empty ($_SERVER['HTTP_X_FORWARDED_FOR'])) + return true; + if (!empty ($_SERVER['http_X_forwarded_for'])) + return true; + return false; +} + +/** + * 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 (',', $_SERVER['HTTP_X_FORWARDED_FOR']); + foreach ($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 + $ip = explode (':', $ip)[0]; + array_push ($ip_list, preg_replace ('/\s+/', '', $ip)); + } + } + return $ip_list; +} + +/** + * Get the ip address of the client from REMOTE_ADDR + * or from HTTP_X_FORWARDED_FOR if behind a proxy + * @returns an the client ip address + */ +function get_ip_address($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); +}