X-Git-Url: https://git.p6c8.net/jirafeau_project.git/blobdiff_plain/0d312b3c20fc8d17a4808442c49b72a499d0dc76..ecfc8a70b8f33915e53ef2fc9ab14e77daa96e72:/lib/functions.php diff --git a/lib/functions.php b/lib/functions.php index 01d0638..4e22796 100644 --- a/lib/functions.php +++ b/lib/functions.php @@ -25,9 +25,16 @@ */ function s2p($s) { + $block_size = 8; $p = ''; for ($i = 0; $i < strlen($s); $i++) { - $p .= $s{$i} . '/'; + $p .= $s{$i}; + if (($i + 1) % $block_size == 0) { + $p .= '/'; + } + } + if (strlen($s) % $block_size != 0) { + $p .= '/'; } return $p; } @@ -152,10 +159,10 @@ function jirafeau_clean_rm_link($link) } } -function jirafeau_clean_rm_file($md5) +function jirafeau_clean_rm_file($hash) { - $p = s2p("$md5"); - $f = VAR_FILES . $p . $md5; + $p = s2p("$hash"); + $f = VAR_FILES . $p . $hash; if (file_exists($f) && is_file($f)) { unlink($f); } @@ -254,31 +261,31 @@ function jirafeau_delete_link($link) jirafeau_clean_rm_link($link); - $md5 = $l['md5']; - $p = s2p("$md5"); + $hash = $l['hash']; + $p = s2p("$hash"); $counter = 1; - if (file_exists(VAR_FILES . $p . $md5. '_count')) { - $content = file(VAR_FILES . $p . $md5. '_count'); + if (file_exists(VAR_FILES . $p . $hash. '_count')) { + $content = file(VAR_FILES . $p . $hash. '_count'); $counter = trim($content[0]); } $counter--; if ($counter >= 1) { - $handle = fopen(VAR_FILES . $p . $md5. '_count', 'w'); + $handle = fopen(VAR_FILES . $p . $hash. '_count', 'w'); fwrite($handle, $counter); fclose($handle); } if ($counter == 0) { - jirafeau_clean_rm_file($md5); + jirafeau_clean_rm_file($hash); } } /** * Delete a file and it's links. */ -function jirafeau_delete_file($md5) +function jirafeau_delete_file($hash) { $count = 0; /* Get all links files. */ @@ -301,17 +308,59 @@ function jirafeau_delete_file($md5) if (!count($l)) { continue; } - if ($l['md5'] == $md5) { + if ($l['hash'] == $hash) { $count++; jirafeau_delete_link($node); } } } } - jirafeau_clean_rm_file($md5); + jirafeau_clean_rm_file($hash); return $count; } + +/** hash file's content + * @param $method hash method, see 'file_hash' option. 'md5' or 'md5_outside'. + * @param $file_path file to hash + * @returns hash string + */ +function jirafeau_hash_file($method, $file_path) +{ + switch ($method) { + case 'md5_outside': + return jirafeau_md5_outside($file_path); + case 'md5': + return md5_file($file_path); + } + return md5_file($file_path); +} + +/** hash part of file: start, end and size. + * This is a partial file hash, faster but weaker. + * @param $file_path file to hash + * @returns hash string + */ +function jirafeau_md5_outside($file_path) +{ + $size = filesize($file_path); + if ($size === false) { + $size = 0; + } + $handle = fopen($file_path, "r"); + if ($handle === false) { + return false; + } + $first = fread($handle, 64); + if ($first === false) { + return false; + } + fseek($handle, $size < 64 ? 0 : $size - 64); + $last = fread($handle, 64); + fclose($handle); + return md5($first . $last . $size); +} + /** * handles an uploaded file * @param $file the file struct given by $_FILE[] @@ -326,7 +375,7 @@ function jirafeau_delete_file($md5) * '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, $crypt, $link_name_length) +function jirafeau_upload($file, $one_time_download, $key, $time, $ip, $crypt, $link_name_length, $file_hash_method) { if (empty($file['tmp_name']) || !is_uploaded_file($file['tmp_name'])) { return (array( @@ -354,18 +403,18 @@ function jirafeau_upload($file, $one_time_download, $key, $time, $ip, $crypt, $l } /* file informations */ - $md5 = md5_file($file['tmp_name']); + $hash = jirafeau_hash_file($file_hash_method, $file['tmp_name']); $name = str_replace(NL, '', trim($file['name'])); $mime_type = $file['type']; $size = $file['size']; /* does file already exist ? */ $rc = false; - $p = s2p("$md5"); - if (file_exists(VAR_FILES . $p . $md5)) { + $p = s2p("$hash"); + if (file_exists(VAR_FILES . $p . $hash)) { $rc = unlink($file['tmp_name']); } elseif ((file_exists(VAR_FILES . $p) || @mkdir(VAR_FILES . $p, 0755, true)) - && move_uploaded_file($file['tmp_name'], VAR_FILES . $p . $md5)) { + && move_uploaded_file($file['tmp_name'], VAR_FILES . $p . $hash)) { $rc = true; } if (!$rc) { @@ -379,47 +428,47 @@ function jirafeau_upload($file, $one_time_download, $key, $time, $ip, $crypt, $l /* Increment or create count file. */ $counter = 0; - if (file_exists(VAR_FILES . $p . $md5 . '_count')) { - $content = file(VAR_FILES . $p . $md5. '_count'); + if (file_exists(VAR_FILES . $p . $hash . '_count')) { + $content = file(VAR_FILES . $p . $hash. '_count'); $counter = trim($content[0]); } $counter++; - $handle = fopen(VAR_FILES . $p . $md5. '_count', 'w'); + $handle = fopen(VAR_FILES . $p . $hash. '_count', 'w'); fwrite($handle, $counter); fclose($handle); /* Create delete code. */ $delete_link_code = jirafeau_gen_random(5); - /* md5 password or empty. */ + /* hash 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 . $hash . 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 . time() . + NL . $hash. NL . ($one_time_download ? 'O' : 'R') . NL . time() . NL . $ip . NL. $delete_link_code . NL . ($crypted ? 'C' : 'O')); fclose($handle); - $md5_link = substr(base_16_to_64(md5_file($link_tmp_name)), 0, $link_name_length); - $l = s2p("$md5_link"); + $hash_link = substr(base_16_to_64(md5_file($link_tmp_name)), 0, $link_name_length); + $l = s2p("$hash_link"); if (!@mkdir(VAR_LINKS . $l, 0755, true) || - !rename($link_tmp_name, VAR_LINKS . $l . $md5_link)) { + !rename($link_tmp_name, VAR_LINKS . $l . $hash_link)) { if (file_exists($link_tmp_name)) { unlink($link_tmp_name); } $counter--; if ($counter >= 1) { - $handle = fopen(VAR_FILES . $p . $md5. '_count', 'w'); + $handle = fopen(VAR_FILES . $p . $hash. '_count', 'w'); fwrite($handle, $counter); fclose($handle); } else { - jirafeau_clean_rm_file($md5_link); + jirafeau_clean_rm_file($hash_link); } return array( 'error' => @@ -429,7 +478,7 @@ function jirafeau_upload($file, $one_time_download, $key, $time, $ip, $crypt, $l 'delete_link' => ''); } return array( 'error' => $noerr, - 'link' => $md5_link, + 'link' => $hash_link, 'delete_link' => $delete_link_code, 'crypt_key' => $crypt_key); } @@ -498,16 +547,13 @@ function check_errors($cfg) exit; } - /* check if the destination dirs are writable */ - $writable = is_writable(VAR_FILES) && is_writable(VAR_LINKS); - /* Checking for errors. */ if (!is_writable(VAR_FILES)) { - add_error(t('The file directory is not writable!'), VAR_FILES); + add_error(t('FILE_DIR_W'), VAR_FILES); } if (!is_writable(VAR_LINKS)) { - add_error(t('The link directory is not writable!'), VAR_LINKS); + add_error(t('LINK_DIR_W'), VAR_LINKS); } if (!is_writable(VAR_ASYNC)) { @@ -534,7 +580,7 @@ function jirafeau_get_link($hash) $out['file_size'] = trim($c[2]); $out['key'] = trim($c[3], NL); $out['time'] = trim($c[4]); - $out['md5'] = trim($c[5]); + $out['hash'] = trim($c[5]); $out['onetime'] = trim($c[6]); $out['upload_date'] = trim($c[7]); $out['ip'] = trim($c[8]); @@ -563,16 +609,16 @@ function jirafeau_admin_list($name, $file_hash, $link_hash) echo t('LS_FILES'); } echo ''; - echo ''; + echo '
'; echo ''; - echo ''; - echo ''; - echo ''; - echo ''; - echo ''; - echo ''; - echo ''; - echo ''; + echo ''; + echo ''; + echo ''; + echo ''; + echo ''; + echo ''; + echo ''; + echo ''; echo ''; /* Get all links files. */ @@ -598,7 +644,7 @@ function jirafeau_admin_list($name, $file_hash, $link_hash) if (!empty($name) && !@preg_match("/$name/i", jirafeau_escape($l['file_name']))) { continue; } - if (!empty($file_hash) && $file_hash != $l['md5']) { + if (!empty($file_hash) && $file_hash != $l['hash']) { continue; } if (!empty($link_hash) && $link_hash != $node) { @@ -637,7 +683,7 @@ function jirafeau_admin_list($name, $file_hash, $link_hash) '' . '' . '' . - '' . + '' . jirafeau_admin_csrf_field() . '' . '' . @@ -676,10 +722,10 @@ function jirafeau_admin_clean() if (!count($l)) { continue; } - $p = s2p($l['md5']); + $p = s2p($l['hash']); if ($l['time'] > 0 && $l['time'] < time() || // expired - !file_exists(VAR_FILES . $p . $l['md5']) || // invalid - !file_exists(VAR_FILES . $p . $l['md5'] . '_count')) { // invalid + !file_exists(VAR_FILES . $p . $l['hash']) || // invalid + !file_exists(VAR_FILES . $p . $l['hash'] . '_count')) { // invalid jirafeau_delete_link($node); $count++; } @@ -889,7 +935,7 @@ function jirafeau_async_push($ref, $data, $code, $max_file_size) * @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, $crypt, $link_name_length) +function jirafeau_async_end($ref, $code, $crypt, $link_name_length, $file_hash_method) { /* Get async infos. */ $a = jirafeau_get_async_ref($ref); @@ -913,48 +959,48 @@ function jirafeau_async_end($ref, $code, $crypt, $link_name_length) } } - $md5 = md5_file($p); + $hash = jirafeau_hash_file($file_hash_method, $p); $size = filesize($p); - $np = s2p($md5); + $np = s2p($hash); $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); + if (!file_exists(VAR_FILES . $np . $hash)) { + rename($p, VAR_FILES . $np . $hash); } /* Increment or create count file. */ $counter = 0; - if (file_exists(VAR_FILES . $np . $md5 . '_count')) { - $content = file(VAR_FILES . $np . $md5. '_count'); + if (file_exists(VAR_FILES . $np . $hash . '_count')) { + $content = file(VAR_FILES . $np . $hash. '_count'); $counter = trim($content[0]); } $counter++; - $handle = fopen(VAR_FILES . $np . $md5. '_count', 'w'); + $handle = fopen(VAR_FILES . $np . $hash. '_count', 'w'); fwrite($handle, $counter); fclose($handle); /* Create link. */ - $link_tmp_name = VAR_LINKS . $md5 . rand(0, 10000) . '.tmp'; + $link_tmp_name = VAR_LINKS . $hash . 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 . + $a['key'] . NL . $a['time'] . NL . $hash . NL . $a['onetime'] . NL . time() . NL . $a['ip'] . NL . $delete_link_code . NL . ($crypted ? 'C' : 'O')); fclose($handle); - $md5_link = substr(base_16_to_64(md5_file($link_tmp_name)), 0, $link_name_length); - $l = s2p("$md5_link"); + $hash_link = substr(base_16_to_64(md5_file($link_tmp_name)), 0, $link_name_length); + $l = s2p("$hash_link"); if (!@mkdir(VAR_LINKS . $l, 0755, true) || - !rename($link_tmp_name, VAR_LINKS . $l . $md5_link)) { + !rename($link_tmp_name, VAR_LINKS . $l . $hash_link)) { echo "Error"; } /* Clean async upload. */ jirafeau_async_delete($ref); - return $md5_link . NL . $delete_link_code . NL . urlencode($crypt_key); + return $hash_link . NL . $delete_link_code . NL . urlencode($crypt_key); } function jirafeau_crypt_create_iv($base, $size) @@ -984,10 +1030,10 @@ function jirafeau_encrypt_file($fp_src, $fp_dst) $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)); + $hash_key = md5($crypt_key); + $iv = jirafeau_crypt_create_iv($hash_key, mcrypt_enc_get_iv_size($m)); /* Init module. */ - mcrypt_generic_init($m, $md5_key, $iv); + mcrypt_generic_init($m, $hash_key, $iv); /* Crypt file. */ $r = fopen($fp_src, 'r'); $w = fopen($fp_dst, 'c'); @@ -1023,8 +1069,8 @@ function jirafeau_decrypt_file($fp_src, $fp_dst, $k) $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)); + $hash_key = md5($crypt_key); + $iv = jirafeau_crypt_create_iv($hash_key, mcrypt_enc_get_iv_size($m)); /* Decrypt file. */ $r = fopen($fp_src, 'r'); $w = fopen($fp_dst, 'c'); @@ -1070,19 +1116,14 @@ function jirafeau_challenge_upload_password($cfg, $password) } /** - * Test if visitor's IP is authorized to upload. + * Test if the given IP is whitelisted by the given list. * * @param $allowedIpList array of allowed IPs * @param $challengedIp IP to be challenged * @return true if IP is authorized, false otherwise. */ -function jirafeau_challenge_upload_ip($allowedIpList, $challengedIp) +function jirafeau_challenge_ip($allowedIpList, $challengedIp) { - // skip if list is empty = all IPs allowed - if (count($allowedIpList) == 0) { - return true; - } - // test given IP against each allowed IP foreach ($allowedIpList as $i) { if ($i == $challengedIp) { return true; @@ -1098,6 +1139,42 @@ function jirafeau_challenge_upload_ip($allowedIpList, $challengedIp) return false; } +/** + * Check if Jirafeau has a restriction on the IP address for uploading. + * @return true if uploading is IP restricted, false otherwise. + */ +function jirafeau_upload_has_ip_restriction($cfg) { + return count($cfg['upload_ip']) > 0; +} + +/** + * Test if visitor's IP is authorized to upload at all. + * + * @param $cfg configuration + * @param $challengedIp IP to be challenged + * @return true if IP is authorized, false otherwise. + */ +function jirafeau_challenge_upload_ip($cfg, $challengedIp) +{ + // If no IP address have been listed, allow upload from any IP + if (!jirafeau_upload_has_ip_restriction($cfg)) { + return true; + } + return jirafeau_challenge_ip($cfg['upload_ip'], $challengedIp); +} + +/** + * Test if visitor's IP is authorized to upload without a password. + * + * @param $cfg configuration + * @param $challengedIp IP to be challenged + * @return true if IP is authorized, false otherwise. + */ +function jirafeau_challenge_upload_ip_without_password($cfg, $challengedIp) +{ + return jirafeau_challenge_ip($cfg['upload_ip_nopassword'], $challengedIp); +} + /** * Test if visitor's IP is authorized or password is supplied and authorized * @param $ip IP to be challenged @@ -1106,35 +1183,9 @@ function jirafeau_challenge_upload_ip($allowedIpList, $challengedIp) */ function jirafeau_challenge_upload ($cfg, $ip, $password) { - // Allow if no ip restrictaion and no password restriction - if ((count ($cfg['upload_ip']) == 0) and (count ($cfg['upload_password']) == 0)) { - return true; - } - - // Allow if ip is in array - foreach ($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; - } - } - } - if (!jirafeau_has_upload_password($cfg)) { - return false; - } - - foreach ($cfg['upload_password'] as $p) { - if ($password == $p) { - return true; - } - } - return false; + return jirafeau_challenge_upload_ip_without_password($cfg, $ip) || + (!jirafeau_has_upload_password($cfg) && !jirafeau_upload_has_ip_restriction($cfg)) || + (jirafeau_challenge_upload_password($cfg, $password) && jirafeau_challenge_upload_ip($cfg, $ip)); } /** Tell if we have some HTTP headers generated by a proxy */
' . t('FILENAME') . '' . t('TYPE') . '' . t('SIZE') . '' . t('EXPIRE') . '' . t('ONETIME') . '' . t('UPLOAD_DATE') . '' . t('ORIGIN') . '' . t('ACTION') . '' . t('FILENAME') . '' . t('TYPE') . '' . t('SIZE') . '' . t('EXPIRE') . '' . t('ONETIME') . '' . t('UPLOAD_DATE') . '' . t('ORIGIN') . '' . t('ACTION') . '