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-rw-r--r--libtdenetwork/libgpgme-copy/gpgme/data-stream.c101
1 files changed, 101 insertions, 0 deletions
diff --git a/libtdenetwork/libgpgme-copy/gpgme/data-stream.c b/libtdenetwork/libgpgme-copy/gpgme/data-stream.c
new file mode 100644
index 000000000..eb8768d3c
--- /dev/null
+++ b/libtdenetwork/libgpgme-copy/gpgme/data-stream.c
@@ -0,0 +1,101 @@
+/* data-stream.c - A stream based data object.
+ Copyright (C) 2002, 2004 g10 Code GmbH
+
+ This file is part of GPGME.
+
+ GPGME is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as
+ published by the Free Software Foundation; either version 2.1 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with this program; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ 02110-1301, USA. */
+
+#if HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <stdio.h>
+#include <sys/types.h>
+
+#include "data.h"
+
+
+static ssize_t
+stream_read (gpgme_data_t dh, void *buffer, size_t size)
+{
+ size_t amt = fread (buffer, 1, size, dh->data.stream);
+ if (amt > 0)
+ return amt;
+ return ferror (dh->data.stream) ? -1 : 0;
+}
+
+
+static ssize_t
+stream_write (gpgme_data_t dh, const void *buffer, size_t size)
+{
+ size_t amt = fwrite (buffer, 1, size, dh->data.stream);
+ if (amt > 0)
+ return amt;
+ return ferror (dh->data.stream) ? -1 : 0;
+}
+
+
+static off_t
+stream_seek (gpgme_data_t dh, off_t offset, int whence)
+{
+ int err;
+
+#ifdef HAVE_FSEEKO
+ err = fseeko (dh->data.stream, offset, whence);
+#else
+ /* FIXME: Check for overflow, or at least bail at compilation. */
+ err = fseek (dh->data.stream, offset, whence);
+#endif
+
+ if (err)
+ return -1;
+
+#ifdef HAVE_FSEEKO
+ return ftello (dh->data.stream);
+#else
+ return ftell (dh->data.stream);
+#endif
+}
+
+
+static int
+stream_get_fd (gpgme_data_t dh)
+{
+ fflush (dh->data.stream);
+ return fileno (dh->data.stream);
+}
+
+
+static struct _gpgme_data_cbs stream_cbs =
+ {
+ stream_read,
+ stream_write,
+ stream_seek,
+ NULL,
+ stream_get_fd
+ };
+
+
+gpgme_error_t
+gpgme_data_new_from_stream (gpgme_data_t *dh, FILE *stream)
+{
+ gpgme_error_t err = _gpgme_data_new (dh, &stream_cbs);
+ if (err)
+ return err;
+
+ (*dh)->data.stream = stream;
+ return 0;
+}