diff --git a/apps/files_encryption/appinfo/app.php b/apps/files_encryption/appinfo/app.php
index cc78402d1d..fa293f4512 100644
--- a/apps/files_encryption/appinfo/app.php
+++ b/apps/files_encryption/appinfo/app.php
@@ -32,7 +32,7 @@ if (
&& OCA\Encryption\Crypt::mode() == 'server'
) {
- // Force the user to re-log in if the encryption key isn't unlocked
+ // Force the user to log-in again if the encryption key isn't unlocked
// (happens when a user is logged in before the encryption app is
// enabled)
OCP\User::logout();
@@ -44,4 +44,6 @@ if (
}
OCP\App::registerAdmin( 'files_encryption', 'settings' );
-OCP\App::registerPersonal( 'files_encryption', 'settings-personal' );
\ No newline at end of file
+
+// This is disabled until client-side encryption is supported:
+// OCP\App::registerPersonal( 'files_encryption', 'settings-personal' );
\ No newline at end of file
diff --git a/apps/files_encryption/lib/crypt.php b/apps/files_encryption/lib/crypt.php
index 642187b910..2591e90227 100755
--- a/apps/files_encryption/lib/crypt.php
+++ b/apps/files_encryption/lib/crypt.php
@@ -130,7 +130,7 @@ class Crypt {
* @return true / false
* @note see also OCA\Encryption\Util->isEncryptedPath()
*/
- public static function isEncryptedContent( $content ) {
+ public static function isCatfile( $content ) {
if ( !$content ) {
@@ -192,7 +192,7 @@ class Crypt {
$content
and isset( $metadata['encrypted'] )
and $metadata['encrypted'] === true
- and !self::isEncryptedContent( $content )
+ and !self::isCatfile( $content )
) {
return true;
diff --git a/apps/files_encryption/lib/keymanager.php b/apps/files_encryption/lib/keymanager.php
index 61bc50721e..c6669081a2 100755
--- a/apps/files_encryption/lib/keymanager.php
+++ b/apps/files_encryption/lib/keymanager.php
@@ -146,10 +146,59 @@ class Keymanager {
}
+ /**
+ * @brief store file encryption key
+ *
+ * @param string $path relative path of the file, including filename
+ * @param string $key
+ * @return bool true/false
+ * @note The keyfile is not encrypted here. Client code must
+ * asymmetrically encrypt the keyfile before passing it to this method
+ */
+ public static function setFileKey( \OC_FilesystemView $view, $path, $userId, $catfile ) {
+
+ $basePath = '/' . $userId . '/files_encryption/keyfiles';
+
+ $targetPath = self::keySetPreparation( $view, $path, $basePath, $userId );
+
+// // update $keytarget and $userId if key belongs to a file shared by someone else
+// $query = $dbClassName::prepare( "SELECT uid_owner, source, target FROM `*PREFIX*sharing` WHERE target = ? AND uid_shared_with = ?" );
+//
+// $result = $query->execute( array ( '/'.$userId.'/files/'.$targetPath, $userId ) );
+//
+// if ( $row = $result->fetchRow( ) ) {
+//
+// $targetPath = $row['source'];
+//
+// $targetPath_parts = explode( '/', $targetPath );
+//
+// $userId = $targetPath_parts[1];
+//
+// $rootview = new \OC_FilesystemView( '/' );
+//
+// if ( ! $rootview->is_writable( $targetPath ) ) {
+//
+// \OC_Log::write( 'Encryption library', "File Key not updated because you don't have write access for the corresponding file", \OC_Log::ERROR );
+//
+// return false;
+//
+// }
+//
+// $targetPath = str_replace( '/'.$userId.'/files/', '', $targetPath );
+//
+// //TODO: check for write permission on shared file once the new sharing API is in place
+//
+// }
+
+ // Save the keyfile in parallel directory
+ return $view->file_put_contents( $basePath . '/' . $targetPath . '.key', $catfile );
+
+ }
+
/**
* @brief retrieve keyfile for an encrypted file
* @param string file name
- * @return string file key or false
+ * @return string file key or false on failure
* @note The keyfile returned is asymmetrically encrypted. Decryption
* of the keyfile must be performed by client code
*/
@@ -171,7 +220,17 @@ class Keymanager {
//
// }
- return $view->file_get_contents( '/' . $userId . '/files_encryption/keyfiles/' . $filePath_f . '.key' );
+ $catfilePath = '/' . $userId . '/files_encryption/keyfiles/' . $filePath_f . '.key';
+
+ if ( $view->file_exists( $catfilePath ) ) {
+
+ return $view->file_get_contents( $catfilePath );
+
+ } else {
+
+ return false;
+
+ }
}
@@ -298,55 +357,6 @@ class Keymanager {
}
- /**
- * @brief store file encryption key
- *
- * @param string $path relative path of the file, including filename
- * @param string $key
- * @return bool true/false
- * @note The keyfile is not encrypted here. Client code must
- * asymmetrically encrypt the keyfile before passing it to this method
- */
- public static function setFileKey( \OC_FilesystemView $view, $path, $userId, $catfile ) {
-
- $basePath = '/' . $userId . '/files_encryption/keyfiles';
-
- $targetPath = self::keySetPreparation( $view, $path, $basePath, $userId );
-
-// // update $keytarget and $userId if key belongs to a file shared by someone else
-// $query = $dbClassName::prepare( "SELECT uid_owner, source, target FROM `*PREFIX*sharing` WHERE target = ? AND uid_shared_with = ?" );
-//
-// $result = $query->execute( array ( '/'.$userId.'/files/'.$targetPath, $userId ) );
-//
-// if ( $row = $result->fetchRow( ) ) {
-//
-// $targetPath = $row['source'];
-//
-// $targetPath_parts = explode( '/', $targetPath );
-//
-// $userId = $targetPath_parts[1];
-//
-// $rootview = new \OC_FilesystemView( '/' );
-//
-// if ( ! $rootview->is_writable( $targetPath ) ) {
-//
-// \OC_Log::write( 'Encryption library', "File Key not updated because you don't have write access for the corresponding file", \OC_Log::ERROR );
-//
-// return false;
-//
-// }
-//
-// $targetPath = str_replace( '/'.$userId.'/files/', '', $targetPath );
-//
-// //TODO: check for write permission on shared file once the new sharing API is in place
-//
-// }
-
- // Save the keyfile in parallel directory
- return $view->file_put_contents( $basePath . '/' . $targetPath . '.key', $catfile );
-
- }
-
/**
* @brief change password of private encryption key
*
diff --git a/apps/files_encryption/lib/proxy.php b/apps/files_encryption/lib/proxy.php
index 83c5e21c4b..6f00bd13b4 100644
--- a/apps/files_encryption/lib/proxy.php
+++ b/apps/files_encryption/lib/proxy.php
@@ -68,7 +68,7 @@ class Proxy extends \OC_FileProxy {
}
- if ( Crypt::isEncryptedContent( $path ) ) {
+ if ( Crypt::isCatfile( $path ) ) {
return true;
@@ -147,7 +147,7 @@ class Proxy extends \OC_FileProxy {
// If data is a catfile
if (
Crypt::mode() == 'server'
- && Crypt::isEncryptedContent( $data )
+ && Crypt::isCatfile( $data )
) {
$split = explode( '/', $path );
@@ -269,14 +269,14 @@ class Proxy extends \OC_FileProxy {
}
public function postGetMimeType($path,$mime){
- if( Crypt::isEncryptedContent($path)){
+ if( Crypt::isCatfile($path)){
$mime = \OCP\Files::getMimeType('crypt://'.$path,'w');
}
return $mime;
}
public function postStat($path,$data){
- if( Crypt::isEncryptedContent($path)){
+ if( Crypt::isCatfile($path)){
$cached= \OC_FileCache_Cached::get($path,'');
$data['size']=$cached['size'];
}
@@ -284,7 +284,7 @@ class Proxy extends \OC_FileProxy {
}
public function postFileSize($path,$size){
- if( Crypt::isEncryptedContent($path)){
+ if( Crypt::isCatfile($path)){
$cached = \OC_FileCache_Cached::get($path,'');
return $cached['size'];
}else{
diff --git a/apps/files_encryption/lib/util.php b/apps/files_encryption/lib/util.php
index 56e4d572c2..f70839e39f 100644
--- a/apps/files_encryption/lib/util.php
+++ b/apps/files_encryption/lib/util.php
@@ -94,6 +94,7 @@ class Util {
private $view; // OC_FilesystemView object for filesystem operations
+ private $userId; // ID of the currently logged-in user
private $pwd; // User Password
private $client; // Client side encryption mode flag
private $publicKeyDir; // Dir containing all public user keys
@@ -108,6 +109,8 @@ class Util {
$this->view = $view;
$this->userId = $userId;
$this->client = $client;
+ $this->userDir = '/' . $this->userId;
+ $this->userFilesDir = '/' . $this->userId . '/' . 'files';
$this->publicKeyDir = '/' . 'public-keys';
$this->encryptionDir = '/' . $this->userId . '/' . 'files_encryption';
$this->keyfilesPath = $this->encryptionDir . '/' . 'keyfiles';
@@ -120,7 +123,9 @@ class Util {
public function ready() {
if(
- !$this->view->file_exists( $this->keyfilesPath )
+ !$this->view->file_exists( $this->encryptionDir )
+ or !$this->view->file_exists( $this->keyfilesPath )
+ or !$this->view->file_exists( $this->shareKeysPath )
or !$this->view->file_exists( $this->publicKeyPath )
or !$this->view->file_exists( $this->privateKeyPath )
) {
@@ -141,6 +146,20 @@ class Util {
*/
public function setupServerSide( $passphrase = null ) {
+ // Create user dir
+ if( !$this->view->file_exists( $this->userDir ) ) {
+
+ $this->view->mkdir( $this->userDir );
+
+ }
+
+ // Create user files dir
+ if( !$this->view->file_exists( $this->userFilesDir ) ) {
+
+ $this->view->mkdir( $this->userFilesDir );
+
+ }
+
// Create shared public key directory
if( !$this->view->file_exists( $this->publicKeyDir ) ) {
@@ -171,13 +190,13 @@ class Util {
// Create user keypair
if (
- !$this->view->file_exists( $this->publicKeyPath )
- or !$this->view->file_exists( $this->privateKeyPath )
+ ! $this->view->file_exists( $this->publicKeyPath )
+ or ! $this->view->file_exists( $this->privateKeyPath )
) {
// Generate keypair
$keypair = Crypt::createKeypair();
-
+
\OC_FileProxy::$enabled = false;
// Save public key
@@ -193,52 +212,71 @@ class Util {
}
+ $publicKey = Keymanager::getPublicKey( $this->view, $this->userId );
+
+ // Encrypt existing user files:
+ $this->encryptAll( $publicKey, $this->userFilesDir );
+
return true;
}
- public function findFiles( $directory, $type = 'plain' ) {
-
- # TODO: test finding non plain content
+ /**
+ * @brief Find all files and their encryption status within a directory
+ * @param string $directory The path of the parent directory to search
+ * @return mixed false if 0 found, array on success. Keys: name, path
+ */
+ public function findFiles( $directory ) {
+
+ // Disable proxy - we don't want files to be decrypted before
+ // we handle them
+ \OC_FileProxy::$enabled = false;
+
+ $found = array( 'plain' => array(), 'encrypted' => array(), 'legacy' => array() );
+
+ if (
+ $this->view->is_dir( $directory )
+ && $handle = $this->view->opendir( $directory )
+ ) {
- if ( $handle = $this->view->opendir( $directory ) ) {
-
while ( false !== ( $file = readdir( $handle ) ) ) {
-
+
if (
$file != "."
&& $file != ".."
) {
-
+
$filePath = $directory . '/' . $this->view->getRelativePath( '/' . $file );
- var_dump($filePath);
-
+ // If the path is a directory, search
+ // its contents
if ( $this->view->is_dir( $filePath ) ) {
$this->findFiles( $filePath );
-
+
+ // If the path is a file, determine
+ // its encryption status
} elseif ( $this->view->is_file( $filePath ) ) {
-
- if ( $type == 'plain' ) {
-
- $this->files[] = array( 'name' => $file, 'path' => $filePath );
-
- } elseif ( $type == 'encrypted' ) {
- if ( Crypt::isEncryptedContent( $this->view->file_get_contents( $filePath ) ) ) {
-
- $this->files[] = array( 'name' => $file, 'path' => $filePath );
-
- }
+ // Disable proxies again, some-
+ // how they get re-enabled :/
+ \OC_FileProxy::$enabled = false;
- } elseif ( $type == 'legacy' ) {
+ // If the file is encrypted
+ if ( Keymanager::getFileKey( $this->view, $this->userId, $file ) ) {
- if ( Crypt::isLegacyEncryptedContent( $this->view->file_get_contents( $filePath ) ) ) {
+ $found['encrypted'][] = array( 'name' => $file, 'path' => $filePath );
+
+ // If the file uses old
+ // encryption system
+ } elseif ( Crypt::isLegacyEncryptedContent( $this->view->file_get_contents( $filePath ) ) ) {
- $this->files[] = array( 'name' => $file, 'path' => $filePath );
+ $found['legacy'][] = array( 'name' => $file, 'path' => $filePath );
- }
+ // If the file is not encrypted
+ } else {
+
+ $found['plain'][] = array( 'name' => $file, 'path' => $filePath );
}
@@ -248,18 +286,22 @@ class Util {
}
- if ( !empty( $this->files ) ) {
+ \OC_FileProxy::$enabled = true;
- return $this->files;
+ if ( empty( $found ) ) {
+
+ return false;
} else {
- return false;
+ return $found;
}
}
+ \OC_FileProxy::$enabled = true;
+
return false;
}
@@ -278,22 +320,55 @@ class Util {
\OC_FileProxy::$enabled = true;
- return Crypt::isEncryptedContent( $data );
+ return Crypt::isCatfile( $data );
}
- public function encryptAll( $directory ) {
+ /**
+ * @brief Encrypt all files in a directory
+ * @param string $publicKey the public key to encrypt files with
+ * @param string $dirPath the directory whose files will be encrypted
+ * @note Encryption is recursive
+ */
+ public function encryptAll( $publicKey, $dirPath ) {
- $plainFiles = $this->findFiles( $this->view, 'plain' );
+ if ( $found = $this->findFiles( $dirPath ) ) {
- if ( $this->encryptFiles( $plainFiles ) ) {
-
- return true;
+ // Encrypt unencrypted files
+ foreach ( $found['plain'] as $plainFilePath ) {
- } else {
-
- return false;
+ // Fetch data from file
+ $plainData = $this->view->file_get_contents( $plainFilePath );
+
+ // Encrypt data, generate catfile
+ $encrypted = Crypt::keyEncryptKeyfile( $plainData, $publicKey );
+
+ // Save catfile
+ Keymanager::setFileKey( $this->view, $plainFilePath, $this->userId, $encrypted['key'] );
+
+ // Overwrite the existing file with the encrypted one
+ $this->view->file_put_contents( $plainFilePath, $encrypted['data'] );
+ }
+
+ // FIXME: Legacy recrypting here isn't finished yet
+ // Encrypt legacy encrypted files
+ foreach ( $found['legacy'] as $legacyFilePath ) {
+
+ // Fetch data from file
+ $legacyData = $this->view->file_get_contents( $legacyFilePath );
+
+ // Recrypt data, generate catfile
+ $recrypted = Crypt::legacyKeyRecryptKeyfile( $legacyData, $legacyPassphrase, $publicKey, $newPassphrase );
+
+ // Save catfile
+ Keymanager::setFileKey( $this->view, $plainFilePath, $this->userId, $recrypted['key'] );
+
+ // Overwrite the existing file with the encrypted one
+ $this->view->file_put_contents( $plainFilePath, $recrypted['data'] );
+
+ }
+
}
}
diff --git a/apps/files_encryption/templates/settings-personal.php b/apps/files_encryption/templates/settings-personal.php
index 1274bd3bb5..c8144da563 100644
--- a/apps/files_encryption/templates/settings-personal.php
+++ b/apps/files_encryption/templates/settings-personal.php
@@ -9,17 +9,6 @@
value=""
>
-
- />
- t('Client side encryption (most secure but makes it impossible to access your data from the web interface)'); ?>
-
-
/>
- t('Server side encryption (allows you to access your files from the web interface and the desktop client)'); ?>
+ t('Server side encryption (allows you to access your files from the web interface)'); ?>