1 files changed, 138 insertions, 0 deletions
diff --git a/libkdenetwork/gpgmepp/callbacks.cpp b/libkdenetwork/gpgmepp/callbacks.cpp
new file mode 100644
index 000000000..b352515d0
--- /dev/null
+++ b/libkdenetwork/gpgmepp/callbacks.cpp
@@ -0,0 +1,138 @@
+/* callbacks.cpp - callback targets for internal use:
+   Copyright (C) 2003,2004 Klarälvdalens Datakonsult AB
+
+   This file is part of GPGME++.
+ 
+   GPGME++ is free software; you can redistribute it and/or modify it
+   under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2 of the License, or
+   (at your option) any later version.
+ 
+   GPGME++ is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with GPGME; if not, write to the Free Software Foundation,
+   Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+*/
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include "callbacks.h"
+
+#include <gpgmepp/interfaces/progressprovider.h>
+#include <gpgmepp/interfaces/passphraseprovider.h>
+#include <gpgmepp/interfaces/dataprovider.h>
+#include <gpgmepp/context.h> // for Error
+
+#include <cassert>
+#include <cerrno>
+#include <unistd.h>
+#include <cstdlib>
+#include <string.h>
+#include <cstdlib>
+
+static inline gpg_error_t makeErrorFromErrno() {
+  return gpg_err_make_from_errno( (gpg_err_source_t)22, errno );
+}
+static inline gpg_error_t makeError( gpg_err_code_t code ) {
+  return gpg_err_make( (gpg_err_source_t)22, code );
+}
+
+using GpgME::ProgressProvider;
+using GpgME::PassphraseProvider;
+using GpgME::DataProvider;
+
+void progress_callback( void * opaque, const char * what,
+			int type, int current, int total ) {
+  ProgressProvider * provider = static_cast<ProgressProvider*>( opaque );
+  if ( provider )
+    provider->showProgress( what, type, current, total );
+}
+
+static void wipe( char * buf, size_t len ) {
+  for ( size_t i = 0 ; i < len ; ++i )
+    buf[i] = '\0';
+}
+
+gpgme_error_t passphrase_callback( void * opaque, const char * uid_hint, const char * desc,
+				   int prev_was_bad, int fd ) {
+  PassphraseProvider * provider = static_cast<PassphraseProvider*>( opaque );
+  bool canceled = false;
+  gpgme_error_t err = GPG_ERR_NO_ERROR;
+  char * passphrase = provider ? provider->getPassphrase( uid_hint, desc, prev_was_bad, canceled ) : 0 ;
+  if ( canceled )
+    err = makeError( GPG_ERR_CANCELED );
+  else
+    if ( passphrase && *passphrase ) {
+      size_t passphrase_length = strlen( passphrase );
+      size_t written = 0;
+      do {
+	ssize_t now_written = write( fd, passphrase + written, passphrase_length - written );
+	if ( now_written < 0 ) {
+	  err = makeErrorFromErrno();
+	  break;
+	}
+	written += now_written;
+      } while ( written < passphrase_length );
+    }
+  
+  if ( passphrase && *passphrase )
+    wipe( passphrase, strlen( passphrase ) );
+  free( passphrase );
+  write( fd, "\n", 1 );
+  return err;
+}
+
+
+
+static ssize_t
+data_read_callback( void * opaque, void * buf, size_t buflen ) {
+  DataProvider * provider = static_cast<DataProvider*>( opaque );
+  if ( !provider ) {
+    errno = EINVAL;
+    return -1;
+  }
+  return provider->read( buf, buflen );
+}
+
+static ssize_t
+data_write_callback( void * opaque, const void * buf, size_t buflen ) {
+  DataProvider * provider = static_cast<DataProvider*>( opaque );
+  if ( !provider ) {
+    errno = EINVAL;
+    return -1;
+  }
+  return provider->write( buf, buflen );
+}
+
+static off_t
+data_seek_callback( void * opaque, off_t offset, int whence ) {
+  DataProvider * provider = static_cast<DataProvider*>( opaque );
+  if ( !provider ) {
+    errno = EINVAL;
+    return -1;
+  }
+  if ( whence != SEEK_SET && whence != SEEK_CUR && whence != SEEK_END ) {
+    errno = EINVAL;
+    return -1;
+  }
+  return provider->seek( offset, whence );
+}
+
+static void data_release_callback( void * opaque ) {
+  DataProvider * provider = static_cast<DataProvider*>( opaque );
+  if ( provider )
+    provider->release();
+}
+
+gpgme_data_cbs data_provider_callbacks = {
+  &data_read_callback,
+  &data_write_callback,
+  &data_seek_callback,
+  &data_release_callback
+};
+