X-Git-Url: https://git.p6c8.net/jirafeau.git/blobdiff_plain/cbef2b93dfeb51484956c960d58af8c4557c25f5..d1ee60f610d6208a6acba1548bd18de774c7de79:/lib/functions.php diff --git a/lib/functions.php b/lib/functions.php index 48bdefd..b98486f 100644 --- a/lib/functions.php +++ b/lib/functions.php @@ -2,7 +2,7 @@ /* * Jirafeau, your web file repository * Copyright (C) 2008 Julien "axolotl" BERNARD - * Copyright (C) 2012 Jerome Jutteau + * Copyright (C) 2015 Jerome Jutteau * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU Affero General Public License as @@ -18,61 +18,187 @@ * along with this program. If not, see . */ +/** + * Transform a string in a path by seperating each letters by a '/'. + * @return path finishing with a '/' + */ +function +s2p ($s) +{ + $p = ''; + for ($i = 0; $i < strlen ($s); $i++) + $p .= $s{$i} . '/'; + return $p; +} + +/** + * Convert base 16 to base 64 + * @returns A string based on 64 characters (0-9, a-z, A-Z, "-" and "_") + */ +function +base_16_to_64 ($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 = ''; + $b = ''; + $i = 0; + # Convert long hex string to bin. + $size = strlen ($num); + for ($i = 0; $i < $size; $i++) + $b .= $hex2bin{hexdec ($num{$i})}; + # Convert long bin to base 64. + $size *= 4; + for ($i = $size - 6; $i >= 0; $i -= 6) + $o = $m{bindec (substr ($b, $i, 6))} . $o; + # Some few bits remaining ? + if ($i < 0 && $i > -6) + $o = $m{bindec (substr ($b, 0, $i + 6))} . $o; + return $o; +} + +/** + * Generate a random code. + * @param $l code length + * @return random code. + */ +function +jirafeau_gen_random ($l) +{ + if ($l <= 0) + return 42; + + $code=""; + for ($i = 0; $i < $l; $i++) + $code .= dechex (rand (0, 15)); + + 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' == $_SERVER['SERVER_PORT'] ) ) { + return true; + } + return false; +} + +function +jirafeau_human_size ($octets) +{ + $u = array ('B', 'KB', 'MB', 'GB', 'TB'); + $o = max ($octets, 0); + $p = min (floor (($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) +{ + $p = s2p ("$link"); + if (file_exists (VAR_LINKS . $p . $link)) + unlink (VAR_LINKS . $p . $link); + $parse = VAR_LINKS . $p; + $scan = array(); + while (file_exists ($parse) + && ($scan = scandir ($parse)) + && count ($scan) == 2 // '.' and '..' folders => empty. + && basename ($parse) != basename (VAR_LINKS)) + { + rmdir ($parse); + $parse = substr ($parse, 0, strlen($parse) - strlen(basename ($parse)) - 1); + } +} + +function +jirafeau_clean_rm_file ($md5) +{ + $p = s2p ("$md5"); + $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)) + { + rmdir ($parse); + $parse = substr ($parse, 0, strlen($parse) - strlen(basename ($parse)) - 1); + } +} + /** * transforms a php.ini string representing a value in an integer * @param $value the value from php.ini * @returns an integer for this value */ -function jirafeau_ini_to_bytes($value) { - $modifier = substr($value, -1); - $bytes = substr($value, 0, -1); - switch(strtoupper($modifier)) { - case 'P': - $bytes *= 1024; - case 'T': - $bytes *= 1024; - case 'G': - $bytes *= 1024; - case 'M': - $bytes *= 1024; - case 'K': - $bytes *= 1024; - default: - break; - } - return $bytes; +function jirafeau_ini_to_bytes ($value) +{ + $modifier = substr ($value, -1); + $bytes = substr ($value, 0, -1); + switch (strtoupper ($modifier)) + { + case 'P': + $bytes *= 1024; + case 'T': + $bytes *= 1024; + case 'G': + $bytes *= 1024; + case 'M': + $bytes *= 1024; + case 'K': + $bytes *= 1024; + default: + break; + } + return $bytes; } /** * gets the maximum upload size according to php.ini - * @returns the maximum upload size + * @returns the maximum upload size in bytes */ -function jirafeau_get_max_upload_size() { - return min(jirafeau_ini_to_bytes(ini_get('post_max_size')), jirafeau_ini_to_bytes(ini_get('upload_max_filesize'))); +function +jirafeau_get_max_upload_size_bytes () +{ + return min (jirafeau_ini_to_bytes (ini_get ('post_max_size')), + jirafeau_ini_to_bytes (ini_get ('upload_max_filesize'))); } /** - * detects if a given filename is present in a directory and find an alternate filename - * @param $name the initial filename - * @param $dir the directory to explore (finishing with a '/') - * @returns an alternate filename, possibly the initial filename + * gets the maximum upload size according to php.ini + * @returns the maximum upload size string */ -function jirafeau_detect_collision($name, $dir) { - if(!file_exists($dir . $name)) { - return $name; - } - - $dot = strpos($name, '.'); - $dot = ($dot === false) ? strlen($name) : $dot; - $first = substr($name, 0, $dot); - $second = substr($name, $dot); - $i = 1; - do { - $new_name = $first . '-' . $i . $second; - $i++; - } while(file_exists($dir . $new_name)); - - return $new_name; +function +jirafeau_get_max_upload_size () +{ + return jirafeau_human_size( + min (jirafeau_ini_to_bytes (ini_get ('post_max_size')), + jirafeau_ini_to_bytes (ini_get ('upload_max_filesize')))); } /** @@ -80,28 +206,110 @@ function jirafeau_detect_collision($name, $dir) { * @param $code the error code * @returns a string explaining the error */ -function jirafeau_upload_errstr($code) { - switch($code) { - case UPLOAD_ERR_INI_SIZE: - case UPLOAD_ERR_FORM_SIZE: - return _('Your file exceeds the maximum authorized file size.'); - break; +function +jirafeau_upload_errstr ($code) +{ + switch ($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; + + 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. '); +} + +/** Remove link and it's file + * @param $link the link's name (hash) + */ + +function +jirafeau_delete_link ($link) +{ + $l = jirafeau_get_link ($link); + if (!count ($l)) + return; + + jirafeau_clean_rm_link ($link); + + $md5 = $l['md5']; + $p = s2p ("$md5"); + + $counter = 1; + if (file_exists (VAR_FILES . $p . $md5. '_count')) + { + $content = file (VAR_FILES . $p . $md5. '_count'); + $counter = trim ($content[0]); + } + $counter--; - case UPLOAD_ERR_PARTIAL: - case UPLOAD_ERR_NO_FILE: - return _('Your file was not uploaded correctly. You may succeed in retrying.'); - break; + if ($counter >= 1) + { + $handle = fopen (VAR_FILES . $p . $md5. '_count', 'w'); + fwrite ($handle, $counter); + fclose ($handle); + } - case UPLOAD_ERR_NO_TMP_DIR: - case UPLOAD_ERR_CANT_WRITE: - case UPLOAD_ERR_EXTENSION: - return _('Internal error. You may not succeed in retrying.'); - break; + if ($counter == 0) + jirafeau_clean_rm_file ($md5); +} + +/** + * Delete a file and it's links. + */ +function +jirafeau_delete_file ($md5) +{ + $count = 0; + /* Get all links files. */ + $stack = array (VAR_LINKS); + while (($d = array_shift ($stack)) && $d != NULL) + { + $dir = scandir ($d); - default: - break; - } - return _('Unknown error.'); + foreach ($dir as $node) + { + if (strcmp ($node, '.') == 0 || strcmp ($node, '..') == 0 || + preg_match ('/\.tmp/i', "$node")) + continue; + + if (is_dir ($d . $node)) + { + /* Push new found directory. */ + $stack[] = $d . $node . '/'; + } + elseif (is_file ($d . $node)) + { + /* Read link informations. */ + $l = jirafeau_get_link (basename ($node)); + if (!count ($l)) + continue; + if ($l['md5'] == $md5) + { + $count++; + jirafeau_delete_link ($node); + } + } + } + } + jirafeau_clean_rm_file ($md5); + return $count; } /** @@ -110,81 +318,128 @@ function jirafeau_upload_errstr($code) { * @param $one_time_download is the file a one time download ? * @param $key if not empty, protect the file with this key * @param $time the time of validity of the file - * @param $cfg the current configuration * @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, $cfg, $ip) { - if(empty($file['tmp_name']) || !is_uploaded_file($file['tmp_name'])) { - return(array('error' => array('has_error' => true, 'why' => jirafeau_upload_errstr($file['error'])), 'link' => '')); - } - - /* array representing no error */ - $noerr = array('has_error' => false, 'why' => ''); - - /* file informations */ - $md5 = md5_file($file['tmp_name']); - $name = trim($file['name']); - $mime_type = $file['type']; - $size = $file['size']; - - /* does file already exist ? */ - $rc = false; - if(file_exists(VAR_FILES . $md5)) { - $rc = unlink($file['tmp_name']); - } - elseif(move_uploaded_file($file['tmp_name'], VAR_FILES . $md5)) { - $rc = true; - } - if(!$rc) - { - return(array( - 'error' => array( - 'has_error' => true, - 'why' => _('Internal error during file creation.')), - 'link' => '') - ); - } - - /* increment or create count file */ - $counter=0; - if(file_exists(VAR_FILES . $md5 . '_count')) { - $content = file(VAR_FILES . $md5 . '_count'); - $counter = trim($content[0]); - } - $counter++; - $handle = fopen(VAR_FILES . $md5 . '_count', 'w'); - fwrite($handle, $counter); - fclose($handle); - - /* create link file */ - $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 . $key . NL . $time . NL . $md5 . NL . ($one_time_download ? 'O' : 'R') . NL . date('U') . NL . $ip . NL); - fclose($handle); - $md5_link = md5_file($link_tmp_name); - if(!rename($link_tmp_name, VAR_LINKS . $md5_link)) { - if ($counter > 1) { - $counter--; - $handle = fopen(VAR_FILES . $md5 . '_count', 'w'); - fwrite($handle, $counter); - fclose($handle); - } - else { - unlink($link_tmp_name); - unlink(VAR_FILE . $md5 . '_count'); - unlink(VAR_FILE . $md5); - } - return(array( - 'error' => array( - 'has_error' => true, - 'why' => _('Internal error during file creation.')), - 'link' => '') - ); - } - return(array('error' => $noerr, 'link' => $md5_link)); +function +jirafeau_upload ($file, $one_time_download, $key, $time, $ip, $crypt, $link_name_length) +{ + if (empty ($file['tmp_name']) || !is_uploaded_file ($file['tmp_name'])) + { + return (array( + 'error' => + array ('has_error' => true, + 'why' => jirafeau_upload_errstr ($file['error'])), + 'link' => '', + 'delete_link' => '')); + } + + /* 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'])); + $mime_type = $file['type']; + $size = $file['size']; + + /* does file already exist ? */ + $rc = false; + $p = s2p ("$md5"); + if (file_exists (VAR_FILES . $p . $md5)) + { + $rc = unlink ($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)) + { + $rc = true; + } + if (!$rc) + { + return (array( + 'error' => + array ('has_error' => true, + 'why' => t('Internal error during file creation.')), + 'link' =>'', + 'delete_link' => '')); + } + + /* Increment or create count file. */ + $counter = 0; + if (file_exists (VAR_FILES . $p . $md5 . '_count')) + { + $content = file (VAR_FILES . $p . $md5. '_count'); + $counter = trim ($content[0]); + } + $counter++; + $handle = fopen (VAR_FILES . $p . $md5. '_count', 'w'); + fwrite ($handle, $counter); + fclose ($handle); + + /* Create delete code. */ + $delete_link_code = jirafeau_gen_random (5); + + /* md5 password or empty. */ + $password = ''; + if (!empty ($key)) + $password = md5 ($key); + + /* create link file */ + $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. $delete_link_code . NL . ($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"); + 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) + { + $handle = fopen (VAR_FILES . $p . $md5. '_count', 'w'); + fwrite ($handle, $counter); + fclose ($handle); + } + else + { + jirafeau_clean_rm_file ($md5_link); + } + return (array( + 'error' => + array ('has_error' => true, + 'why' => t('Internal error during file creation. ')), + 'link' =>'', + 'delete_link' => '')); + } + return (array ('error' => $noerr, + 'link' => $md5_link, + 'delete_link' => $delete_link_code, + 'crypt_key' => $crypt_key)); } /** @@ -192,17 +447,19 @@ function jirafeau_upload($file, $one_time_download, $key, $time, $cfg, $ip) { * @param $mime the mime type * @returns a boolean telling if a mime type is viewable */ -function jirafeau_is_viewable($mime) { - if(!empty($mime)) { - // actually, verify if mime-type is an image or a text - $viewable = array('image', 'text'); - $decomposed = explode('/', $mime); - return in_array($decomposed[0], $viewable); - } - return false; +function +jirafeau_is_viewable ($mime) +{ + if (!empty ($mime)) + { + /* Actually, verify if mime-type is an image or a text. */ + $viewable = array ('image', 'text', 'video', 'audio'); + $decomposed = explode ('/', $mime); + return in_array ($decomposed[0], $viewable); + } + return false; } - // Error handling functions. //! Global array that contains all registered errors. $error_list = array (); @@ -212,16 +469,20 @@ $error_list = array (); * @param $title the error's title * @param $description is a human-friendly description of the problem. */ -function add_error ($title, $description) { +function +add_error ($title, $description) +{ global $error_list; - $error_list[] = '

' . $title . '
' . $description . '

'; + $error_list[] = '

' . $title. '
' . $description. '

'; } /** * Informs whether any error has been registered yet. * @return true if there are errors. */ -function has_error () { +function +has_error () +{ global $error_list; return !empty ($error_list); } @@ -229,15 +490,594 @@ function has_error () { /** * Displays all the errors. */ -function show_errors () { - if (has_error ()) { +function +show_errors () +{ + if (has_error ()) + { global $error_list; echo '
'; - foreach ($error_list as $error) { + foreach ($error_list as $error) + { echo $error; } echo '
'; } } -?> +function check_errors ($cfg) +{ + if (file_exists (JIRAFEAU_ROOT . 'install.php') + && !($cfg['installation_done'] === true)) + { + header('Location: install.php'); + exit; + } + + /* check if the destination dirs are writable */ + $writable = is_writable (VAR_FILES) && is_writable (VAR_LINKS); + + /* Checking for errors. */ + if (!is_writable (VAR_FILES)) + add_error (t('The file directory is not writable!'), VAR_FILES); + + if (!is_writable (VAR_LINKS)) + add_error (t('The link directory is not writable!'), VAR_LINKS); + + if (!is_writable (VAR_ASYNC)) + add_error (t('The async directory is not writable!'), VAR_ASYNC); +} + +/** + * Read link informations + * @return array containing informations. + */ +function +jirafeau_get_link ($hash) +{ + $out = array (); + $link = VAR_LINKS . s2p ("$hash") . $hash; + + if (!file_exists ($link)) + return $out; + + $c = file ($link); + $out['file_name'] = trim ($c[0]); + $out['mime_type'] = trim ($c[1]); + $out['file_size'] = trim ($c[2]); + $out['key'] = trim ($c[3], NL); + $out['time'] = trim ($c[4]); + $out['md5'] = trim ($c[5]); + $out['onetime'] = trim ($c[6]); + $out['upload_date'] = trim ($c[7]); + $out['ip'] = trim ($c[8]); + $out['link_code'] = trim ($c[9]); + if (trim ($c[10]) == 'C') + $out['crypted'] = true; + else + $out['crypted'] = false; + + return $out; +} + +/** + * List files in admin interface. + */ +function +jirafeau_admin_list ($name, $file_hash, $link_hash) +{ + echo '
'; + if (!empty ($name)) + echo t('Filename') . ": $name "; + if (!empty ($file_hash)) + echo t('file') . ": $file_hash "; + if (!empty ($link_hash)) + echo t('link') . ": $link_hash "; + if (empty ($name) && empty ($file_hash) && empty ($link_hash)) + echo t('List all files'); + echo ''; + echo ''; + echo ''; + echo ''; + echo ''; + echo ''; + echo ''; + echo ''; + echo ''; + echo ''; + echo ''; + echo ''; + + /* Get all links files. */ + $stack = array (VAR_LINKS); + while (($d = array_shift ($stack)) && $d != NULL) + { + $dir = scandir ($d); + foreach ($dir as $node) + { + if (strcmp ($node, '.') == 0 || strcmp ($node, '..') == 0 || + preg_match ('/\.tmp/i', "$node")) + continue; + if (is_dir ($d . $node)) + { + /* Push new found directory. */ + $stack[] = $d . $node . '/'; + } + elseif (is_file ($d . $node)) + { + /* Read link informations. */ + $l = jirafeau_get_link ($node); + if (!count ($l)) + continue; + + /* Filter. */ + if (!empty ($name) && !preg_match ("/$name/i", $l['file_name'])) + continue; + if (!empty ($file_hash) && $file_hash != $l['md5']) + continue; + if (!empty ($link_hash) && $link_hash != $node) + continue; + /* Print link informations. */ + echo ''; + echo ''; + echo ''; + echo ''; + echo ''; + echo ''; + echo ''; + echo ''; + echo ''; + echo ''; + } + } + } + echo '
' . t('Filename') . '' . t('Type') . '' . t('Size') . '' . t('Expire') . '' . t('Onetime') . '' . t('Upload date') . '' . t('Origin') . '' . t('Action') . '
' . + '
' . + '' . + '' . + '' . + '
'; + echo '		' . $l['mime_type'] . '' . jirafeau_human_size ($l['file_size']) . '' . ($l['time'] == -1 ? '' : strftime ('%c', $l['time'])) . + '' . $l['onetime'] . '' . strftime ('%c', $l['upload_date']) . '' . $l['ip'] . '' . + '
' . + '' . + '' . + '' . + '
' . + '
' . + '' . + '' . + '' . + '
' . + '
'; +} + +/** + * Clean expired files. + * @return number of cleaned files. + */ +function +jirafeau_admin_clean () +{ + $count = 0; + /* Get all links files. */ + $stack = array (VAR_LINKS); + while (($d = array_shift ($stack)) && $d != NULL) + { + $dir = scandir ($d); + + foreach ($dir as $node) + { + if (strcmp ($node, '.') == 0 || strcmp ($node, '..') == 0 || + preg_match ('/\.tmp/i', "$node")) + continue; + + if (is_dir ($d . $node)) + { + /* Push new found directory. */ + $stack[] = $d . $node . '/'; + } + elseif (is_file ($d . $node)) + { + /* Read link informations. */ + $l = jirafeau_get_link (basename ($node)); + if (!count ($l)) + continue; + $p = s2p ($l['md5']); + if ($l['time'] > 0 && $l['time'] < time () || // expired + !file_exists (VAR_FILES . $p . $l['md5']) || // invalid + !file_exists (VAR_FILES . $p . $l['md5'] . '_count')) // invalid + { + jirafeau_delete_link ($node); + $count++; + } + } + } + } + return $count; +} + + +/** + * Clean old async transferts. + * @return number of cleaned files. + */ +function +jirafeau_admin_clean_async () +{ + $count = 0; + /* Get all links files. */ + $stack = array (VAR_ASYNC); + while (($d = array_shift ($stack)) && $d != NULL) + { + $dir = scandir ($d); + + foreach ($dir as $node) + { + if (strcmp ($node, '.') == 0 || strcmp ($node, '..') == 0 || + preg_match ('/\.tmp/i', "$node")) + continue; + + if (is_dir ($d . $node)) + { + /* Push new found directory. */ + $stack[] = $d . $node . '/'; + } + elseif (is_file ($d . $node)) + { + /* Read async informations. */ + $a = jirafeau_get_async_ref (basename ($node)); + if (!count ($a)) + continue; + /* Delete transferts older than 1 hour. */ + if (date ('U') - $a['last_edited'] > 3600) + { + jirafeau_async_delete (basename ($node)); + $count++; + } + } + } + } + return $count; +} +/** + * Read async transfert informations + * @return array containing informations. + */ +function +jirafeau_get_async_ref ($ref) +{ + $out = array (); + $refinfos = VAR_ASYNC . s2p ("$ref") . "$ref"; + + if (!file_exists ($refinfos)) + return $out; + + $c = file ($refinfos); + $out['file_name'] = trim ($c[0]); + $out['mime_type'] = trim ($c[1]); + $out['key'] = trim ($c[2], NL); + $out['time'] = trim ($c[3]); + $out['onetime'] = trim ($c[4]); + $out['ip'] = trim ($c[5]); + $out['last_edited'] = trim ($c[6]); + $out['next_code'] = trim ($c[7]); + return $out; +} + +/** + * Delete async transfert informations + */ +function +jirafeau_async_delete ($ref) +{ + $p = s2p ("$ref"); + if (file_exists (VAR_ASYNC . $p . $ref)) + unlink (VAR_ASYNC . $p . $ref); + if (file_exists (VAR_ASYNC . $p . $ref . '_data')) + unlink (VAR_ASYNC . $p . $ref . '_data'); + $parse = VAR_ASYNC . $p; + $scan = array(); + while (file_exists ($parse) + && ($scan = scandir ($parse)) + && count ($scan) == 2 // '.' and '..' folders => empty. + && basename ($parse) != basename (VAR_ASYNC)) + { + rmdir ($parse); + $parse = substr ($parse, 0, strlen($parse) - strlen(basename ($parse)) - 1); + } +} + +/** + * Init a new asynchronous upload. + * @param $finename Name of the file to send + * @param $one_time One time upload parameter + * @param $key eventual password (or blank) + * @param $time time limit + * @param $ip ip address of the client + * @return a string containing a temporary reference followed by a code or the string "Error" + */ +function +jirafeau_async_init ($filename, $type, $one_time, $key, $time, $ip) +{ + $res = 'Error'; + + /* Create temporary folder. */ + $ref; + $p; + $code = jirafeau_gen_random (4); + do + { + $ref = jirafeau_gen_random (32); + $p = VAR_ASYNC . s2p ($ref); + } while (file_exists ($p)); + @mkdir ($p, 0755, true); + if (!file_exists ($p)) + { + echo "Error"; + return; + } + + /* md5 password or empty */ + $password = ''; + if (!empty ($key)) + $password = md5 ($key); + + /* Store informations. */ + $p .= $ref; + $handle = fopen ($p, 'w'); + fwrite ($handle, + str_replace (NL, '', trim ($filename)) . NL . + str_replace (NL, '', trim ($type)) . NL . $password . NL . + $time . NL . ($one_time ? 'O' : 'R') . NL . $ip . NL . + date ('U') . NL . $code . NL); + fclose ($handle); + + return $ref . NL . $code ; +} + +/** + * Append a piece of file on the asynchronous upload. + * @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, $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"; + + $p = s2p ($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. */ + $r = fopen ($r_path, 'r'); + $w = fopen ($w_path, 'a'); + while (!feof ($r)) + { + if (fwrite ($w, fread ($r, 1024)) === false) + { + fclose ($r); + fclose ($w); + jirafeau_async_delete ($ref); + return "Error"; + } + } + fclose ($r); + fclose ($w); + 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 . $code . NL); + fclose ($handle); + return $code; +} + +/** + * Finalyze an asynchronous upload. + * @param $ref asynchronous upload reference + * @param $code client code for this operation + * @param $crypt boolean asking to crypt or not + * @param $link_name_length link name lenght + * @return a string containing the download reference followed by a delete code or the string "Error" + */ +function +jirafeau_async_end ($ref, $code, $crypt, $link_name_length) +{ + /* 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"; + + $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 (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')) + { + $content = file (VAR_FILES . $np . $md5. '_count'); + $counter = trim ($content[0]); + } + $counter++; + $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'; + $handle = fopen ($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 . $delete_link_code . NL . ($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"); + 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 . $delete_link_code . NL . urlencode($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') == true)) + 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; +} +