+/**
+ * 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 .
+ time() . 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 .
+ time() . 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 $link_name_length link name length
+ * @return a string containing the download reference followed by a delete code or the string 'Error'
+ */
+function jirafeau_async_end($ref, $code, $crypt, $link_name_length)
+{
+ /* 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 .
+ 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");
+ 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') == 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 $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, $challengedIp)
+{
+ // skip if list is empty = all IPs allowed
+ if (count($allowedIpList) == 0) {
+ return true;
+ }
+ // test given IP against each allowed IP
+ foreach ($allowedIpList as $i) {
+ if ($i == $challengedIp) {
+ return true;
+ }
+ // CIDR test for IPv4 only.
+ if (strpos($i, '/') !== false) {
+ list($subnet, $mask) = explode('/', $i);
+ if ((ip2long($challengedIp) & ~((1 << (32 - $mask)) - 1)) == ip2long($subnet)) {
+ return true;
+ }
+ }
+ }
+ return false;
+}
+
+/**
+ * Test if visitor's IP is authorized or password is supplied and authorized
+ * @param $ip IP to be challenged
+ * @param $password password to be challenged
+ * @return true if access is valid, false otherwise.
+ */
+function jirafeau_challenge_upload ($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 == $p) {
+ return true;
+ }
+ }
+ return false;
+}
+
+/** Tell if we have some HTTP headers generated by a proxy */
+function has_http_forwarded()
+{
+ return
+ !empty($_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);
+}
+
+/**
+ * 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 $content;
+}
+
+function jirafeau_escape($string)
+{
+ return htmlspecialchars($string, ENT_QUOTES);
+}
git.p6c8.net / jirafeau_project.git / blobdiff