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-rw-r--r--libtdenetwork/gpgmepp/callbacks.cpp138
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diff --git a/libtdenetwork/gpgmepp/callbacks.cpp b/libtdenetwork/gpgmepp/callbacks.cpp
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+/* 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
+};
+