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[jirafeau.git] / lib / functions.php

diff --git a/lib/functions.php b/lib/functions.php
index c42293bcdcba3dfa2e35aa8ad416ea29a7c4c64b..4736b7f35b2d1b3d9454f631f26e28b824cfadeb 100644 (file)
--- a/lib/functions.php
+++ b/lib/functions.php
@@ -143,7 +143,6 @@ function jirafeau_human_size($octets)
 // Convert UTC timestamp to a datetime field
 function jirafeau_get_datetimefield($timestamp)
 {
-
     $ts = date_create("@" . $timestamp);
     $content = '<span class="datetime" data-datetime="' . date_format($ts, 'Y-m-d H:i') . '">'
         . date_format($ts, 'Y-m-d H:i') . ' (GMT)</span>';
@@ -460,8 +459,9 @@ function jirafeau_upload($file, $one_time_download, $key, $time, $ip, $crypt, $l
     if ($crypt == true && extension_loaded('sodium') == true) {
         $crypt_key = jirafeau_encrypt_file($file['tmp_name'], $file['tmp_name'].'crypt');
         if (strlen($crypt_key) > 0) {
-            $crypted = true;
-            rename($file['tmp_name'].'crypt', $file['tmp_name']);
+            if (rename($file['tmp_name'].'crypt', $file['tmp_name']) === true) {
+                $crypted = true;
+            }
         }
     }
 
@@ -878,7 +878,7 @@ function jirafeau_fileperms($path)
 function jirafeau_admin_bug_report($cfg)
 {
     $out = "<fieldset><legend>" . t('REPORTING_AN_ISSUE') . "</legend>";
-    $out .= "If you have a problem related to Jirafeau, please <a href='https://gitlab.com/mojo42/Jirafeau/-/issues'>open an issue</a>, explain your problem in english and copy-paste the following content:<br/><br/><code>";
+    $out .= "If you have a problem related to Jirafeau, please <a href='" . JIRAFEAU_WEBSITE . "/-/issues'>open an issue</a>, explain your problem in english and copy-paste the following content:<br/><br/><code>";
 
     $out .= "# Jirafeau<br/>";
     $out .= "- version: " . JIRAFEAU_VERSION . "<br/>";
@@ -1145,11 +1145,11 @@ function jirafeau_async_end($ref, $code, $crypt, $link_name_length, $file_hash_m
     $crypted = false;
     $crypt_key = '';
     if ($crypt == true && extension_loaded('sodium') == true) {
-        //$crypt_key = jirafeau_encrypt_file($p, $p);
         $crypt_key = jirafeau_encrypt_file($p, $p.'.crypt');
         if (strlen($crypt_key) > 0) {
-            $crypted = true;
-            rename($p.'.crypt', $p);
+            if (rename($p.'.crypt', $p) === true) {
+                $crypted = true;
+            }
         }
     }
 
@@ -1212,15 +1212,15 @@ function jirafeau_crypt_create_iv($base, $size)
 }
 
 /**
- * Crypt file and returns decrypt key.
+ * Crypt file using Sodium 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 ('.')
+ * @param $fp_dst file path to the file to write crypted file (must not be the same).
+ * @return key used to encrypt the file
  */
 function jirafeau_encrypt_file($fp_src, $fp_dst)
 {
     $fs = filesize($fp_src);
-    if ($fs === false || $fs == 0 || !(extension_loaded('sodium') == true)) {
+    if ($fs === false || $fs == 0 || extension_loaded('sodium') == false || $fp_src == $fp_dst) {
         return '';
     }
 
@@ -1238,7 +1238,7 @@ function jirafeau_encrypt_file($fp_src, $fp_dst)
         $enc = sodium_crypto_secretstream_xchacha20poly1305_push($crypt_state, $to_enc);
 
         if (fwrite($w, $enc) === false) {
-           return '';
+            return '';
         }
     }
 
@@ -1252,36 +1252,41 @@ function jirafeau_encrypt_file($fp_src, $fp_dst)
 }
 
 /**
- * Decrypt file.
+ * Decrypt file using Sodium.
  * @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.
+ * @param $fp_dst file path to the file to write decrypted file (must not be the same).
+ * @param $k decryption key
+ * @return true if decryption succeeded, false otherwise
  */
 function jirafeau_decrypt_file($fp_src, $fp_dst, $k)
 {
     $fs = filesize($fp_src);
-    if ($fs === false || $fs == 0 || extension_loaded('sodium') == false) {
+    if ($fs === false || $fs == 0 || extension_loaded('sodium') == false || $fp_src == $fp_dst) {
         return false;
     }
 
     /* Decrypt file. */
-    $r = fopen(VAR_FILES . $p . $link['hash'], 'rb');
+    $r = fopen($fp_src, 'rb');
+    $w = fopen($fp_dst, 'wb');
 
     $crypt_header = fread($r, SODIUM_CRYPTO_SECRETSTREAM_XCHACHA20POLY1305_HEADERBYTES);
 
     /* Init module. */
-    $crypt_state = sodium_crypto_secretstream_xchacha20poly1305_init_pull($crypt_header, $crypt_key);
+    $crypt_state = sodium_crypto_secretstream_xchacha20poly1305_init_pull($crypt_header, $k);
 
     /* Decrypt file. */
 
     for ($i = SODIUM_CRYPTO_SECRETSTREAM_XCHACHA20POLY1305_HEADERBYTES; $i < $fs; $i += JIRAFEAU_SODIUM_CHUNKSIZE + SODIUM_CRYPTO_SECRETSTREAM_XCHACHA20POLY1305_ABYTES) {
         $to_dec = fread($r, JIRAFEAU_SODIUM_CHUNKSIZE + SODIUM_CRYPTO_SECRETSTREAM_XCHACHA20POLY1305_ABYTES);
         [$dec, $crypt_tag] = sodium_crypto_secretstream_xchacha20poly1305_pull($crypt_state, $to_dec);
-        echo $dec;
+        
+        if (fwrite($w, $dec) === false) {
+            return false;
+        }
     }
 
     fclose($r);
+    fclose($w);
 
     /* Cleanup. */
     sodium_memzero($crypt_state);
@@ -1290,11 +1295,11 @@ function jirafeau_decrypt_file($fp_src, $fp_dst, $k)
 }
 
 /**
- * Decrypt file.
+ * Decrypt file using mcrypt.
  * @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 $k string composed of the key and the iv separated by a point ('.')
- * @return key used to decrypt. a string of length 0 is returned if failed.
+ * @return true if decryption succeeded, false otherwise
  */
 function jirafeau_decrypt_file_legacy($fp_src, $fp_dst, $k)
 {
@@ -1309,6 +1314,8 @@ function jirafeau_decrypt_file_legacy($fp_src, $fp_dst, $k)
     $crypt_key = $k;
     $hash_key = md5($crypt_key);
     $iv = jirafeau_crypt_create_iv($hash_key, mcrypt_enc_get_iv_size($m));
+    /* Init module. */
+    mcrypt_generic_init($m, $hash_key, $iv);
     /* Decrypt file. */
     $r = fopen($fp_src, 'r');
     $w = fopen($fp_dst, 'c');