X-Git-Url: https://git.p6c8.net/jirafeau_project.git/blobdiff_plain/b402561271f0de4f4c12fc8f8c7d51d12e0a3e5c..ebcb7402a9776c5881fbba4d1d60ad50e41a097d:/lib/functions.php

diff --git a/lib/functions.php b/lib/functions.php
index 7d15e1b..b590e2b 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 $p;
 }
@@ -204,7 +211,7 @@ function jirafeau_ini_to_bytes($value)
 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')));
+               jirafeau_ini_to_bytes(ini_get('upload_max_filesize')));
 }
 
 /**
@@ -213,9 +220,7 @@ function jirafeau_get_max_upload_size_bytes()
  */
 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'))));
+    return jirafeau_human_size(jirafeau_get_max_upload_size_bytes());
 }
 
 /**
@@ -374,7 +379,7 @@ function jirafeau_upload($file, $one_time_download, $key, $time, $ip, $crypt, $l
         return (array(
                  'error' =>
                    array('has_error' => true,
-                          'why' => t('Internal error during file creation.')),
+                          'why' => t('INTERNAL_ERROR_DEL')),
                  'link' =>'',
                  'delete_link' => ''));
     }
@@ -500,20 +505,17 @@ function check_errors($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)) {
-        add_error(t('The async directory is not writable!'), VAR_ASYNC);
+        add_error(t('ASYNC_DIR_W'), VAR_ASYNC);
     }
 }
 
@@ -553,28 +555,28 @@ function jirafeau_admin_list($name, $file_hash, $link_hash)
 {
     echo '<fieldset><legend>';
     if (!empty($name)) {
-        echo t('Filename') . ": $name ";
+        echo t('FILENAME') . ": " . jirafeau_escape($name);
     }
     if (!empty($file_hash)) {
-        echo t('file') . ": $file_hash ";
+        echo t('FILE') . ": " . jirafeau_escape($file_hash);
     }
     if (!empty($link_hash)) {
-        echo t('link') . ": $link_hash ";
+        echo t('LINK') . ": " . jirafeau_escape($link_hash);
     }
     if (empty($name) && empty($file_hash) && empty($link_hash)) {
-        echo t('List all files');
+        echo t('LS_FILES');
     }
     echo '</legend>';
-    echo '<table>';
+    echo '<table border="1" width="1100">';
     echo '<tr>';
-    echo '<td>' . t('Filename') . '</td>';
-    echo '<td>' . t('Type') . '</td>';
-    echo '<td>' . t('Size') . '</td>';
-    echo '<td>' . t('Expire') . '</td>';
-    echo '<td>' . t('Onetime') . '</td>';
-    echo '<td>' . t('Upload date') . '</td>';
-    echo '<td>' . t('Origin') . '</td>';
-    echo '<td>' . t('Action') . '</td>';
+    echo '<th>' . t('FILENAME') . '</th>';
+    echo '<th>' . t('TYPE') . '</th>';
+    echo '<th>' . t('SIZE') . '</th>';
+    echo '<th>' . t('EXPIRE') . '</th>';
+    echo '<th>' . t('ONETIME') . '</th>';
+    echo '<th>' . t('UPLOAD_DATE') . '</th>';
+    echo '<th>' . t('ORIGIN') . '</th>';
+    echo '<th>' . t('ACTION') . '</th>';
     echo '</tr>';
 
     /* Get all links files. */
@@ -597,7 +599,7 @@ function jirafeau_admin_list($name, $file_hash, $link_hash)
                 }
 
                 /* Filter. */
-                if (!empty($name) && !preg_match("/$name/i", htmlspecialchars($l['file_name']))) {
+                if (!empty($name) && !@preg_match("/$name/i", jirafeau_escape($l['file_name']))) {
                     continue;
                 }
                 if (!empty($file_hash) && $file_hash != $l['md5']) {
@@ -609,10 +611,10 @@ function jirafeau_admin_list($name, $file_hash, $link_hash)
                 /* Print link informations. */
                 echo '<tr>';
                 echo '<td>' .
-                '<strong><a id="upload_link" href="' . JIRAFEAU_ABSPREFIX . 'f.php?h='. htmlspecialchars($node) .'" title="' .
-                    t('Download page') . '">' . htmlspecialchars($l['file_name']) . '</a></strong>';
+                '<strong><a id="upload_link" href="f.php?h='. jirafeau_escape($node) .'" title="' .
+                    t('DL_PAGE') . '">' . jirafeau_escape($l['file_name']) . '</a></strong>';
                 echo '</td>';
-                echo '<td>' . $l['mime_type'] . '</td>';
+                echo '<td>' . jirafeau_escape($l['mime_type']) . '</td>';
                 echo '<td>' . jirafeau_human_size($l['file_size']) . '</td>';
                 echo '<td>' . ($l['time'] == -1 ? '∞' : jirafeau_get_datetimefield($l['time'])) . '</td>';
                 echo '<td>';
@@ -628,17 +630,20 @@ function jirafeau_admin_list($name, $file_hash, $link_hash)
                 '<form method="post">' .
                 '<input type = "hidden" name = "action" value = "download"/>' .
                 '<input type = "hidden" name = "link" value = "' . $node . '"/>' .
-                '<input type = "submit" value = "' . t('Download') . '" />' .
+                jirafeau_admin_csrf_field() .
+                '<input type = "submit" value = "' . t('DL') . '" />' .
                 '</form>' .
                 '<form method="post">' .
                 '<input type = "hidden" name = "action" value = "delete_link"/>' .
                 '<input type = "hidden" name = "link" value = "' . $node . '"/>' .
-                '<input type = "submit" value = "' . t('Del link') . '" />' .
+                jirafeau_admin_csrf_field() .
+                '<input type = "submit" value = "' . t('DEL_LINK') . '" />' .
                 '</form>' .
                 '<form method="post">' .
                 '<input type = "hidden" name = "action" value = "delete_file"/>' .
                 '<input type = "hidden" name = "md5" value = "' . $l['md5'] . '"/>' .
-                '<input type = "submit" value = "' . t('Del file and links') . '" />' .
+                jirafeau_admin_csrf_field() .
+                '<input type = "submit" value = "' . t('DEL_FILE_LINKS') . '" />' .
                 '</form>' .
                 '</td>';
                 echo '</tr>';
@@ -1069,19 +1074,14 @@ function jirafeau_challenge_upload_password($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 == $challengedIp) {
             return true;
@@ -1097,6 +1097,42 @@ function jirafeau_challenge_upload_ip($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 $ip IP to be challenged
@@ -1105,35 +1141,9 @@ function jirafeau_challenge_upload_ip($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 */
@@ -1214,185 +1224,6 @@ function hex_to_base64($hex)
     return base64_encode($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);
-    } elseif (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.
  *
@@ -1422,3 +1253,34 @@ function jirafeau_replace_markers($content, $htmllinebreaks = false)
 
     return $content;
 }
+
+function jirafeau_escape($string)
+{
+    return htmlspecialchars($string, ENT_QUOTES);
+}
+
+function jirafeau_admin_session_start()
+{
+    $_SESSION['admin_auth'] = true;
+    $_SESSION['admin_csrf'] = md5(uniqid(mt_rand(), true));
+}
+
+function jirafeau_admin_session_end()
+{
+    $_SESSION = array();
+    session_destroy();
+}
+
+function jirafeau_admin_session_logged()
+{
+    return isset($_SESSION['admin_auth']) &&
+           isset($_SESSION['admin_csrf']) &&
+           isset($_POST['admin_csrf']) &&
+           $_SESSION['admin_auth'] === true &&
+           $_SESSION['admin_csrf'] === $_POST['admin_csrf'];
+}
+
+function jirafeau_admin_csrf_field()
+{
+    return "<input type='hidden' name='admin_csrf' value='". $_SESSION['admin_csrf'] . "'/>";
+}