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-rw-r--r--libtdenetwork/libgpgme-copy/gpgme/data-compat.c209
1 files changed, 209 insertions, 0 deletions
diff --git a/libtdenetwork/libgpgme-copy/gpgme/data-compat.c b/libtdenetwork/libgpgme-copy/gpgme/data-compat.c
new file mode 100644
index 00000000..37cb4ff5
--- /dev/null
+++ b/libtdenetwork/libgpgme-copy/gpgme/data-compat.c
@@ -0,0 +1,209 @@
+/* data-compat.c - Compatibility interfaces for data objects.
+ Copyright (C) 2002, 2003, 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 <errno.h>
+#include <sys/time.h>
+#include <sys/stat.h>
+#include <stdlib.h>
+
+#include "data.h"
+#include "util.h"
+
+
+/* Create a new data buffer filled with LENGTH bytes starting from
+ OFFSET within the file FNAME or stream STREAM (exactly one must be
+ non-zero). */
+gpgme_error_t
+gpgme_data_new_from_filepart (gpgme_data_t *dh, const char *fname,
+ FILE *stream, off_t offset, size_t length)
+{
+ gpgme_error_t err;
+ char *buf = NULL;
+ int res;
+
+ if (stream && fname)
+ return gpg_error (GPG_ERR_INV_VALUE);
+
+ if (fname)
+ stream = fopen (fname, "rb");
+ if (!stream)
+ return gpg_error_from_errno (errno);
+
+#ifdef HAVE_FSEEKO
+ res = fseeko (stream, offset, SEEK_SET);
+#else
+ /* FIXME: Check for overflow, or at least bail at compilation. */
+ res = fseek (stream, offset, SEEK_SET);
+#endif
+
+ if (res)
+ {
+ int saved_errno = errno;
+ if (fname)
+ fclose (stream);
+ return gpg_error_from_errno (saved_errno);
+ }
+
+ buf = malloc (length);
+ if (!buf)
+ {
+ int saved_errno = errno;
+ if (fname)
+ fclose (stream);
+ return gpg_error_from_errno (saved_errno);
+ }
+
+ while (fread (buf, length, 1, stream) < 1
+ && ferror (stream) && errno == EINTR);
+ if (ferror (stream))
+ {
+ int saved_errno = errno;
+ if (buf)
+ free (buf);
+ if (fname)
+ fclose (stream);
+ return gpg_error_from_errno (saved_errno);
+ }
+
+ if (fname)
+ fclose (stream);
+
+ err = gpgme_data_new (dh);
+ if (err)
+ {
+ if (buf)
+ free (buf);
+ return err;
+ }
+
+ (*dh)->data.mem.buffer = buf;
+ (*dh)->data.mem.size = length;
+ (*dh)->data.mem.length = length;
+ return 0;
+}
+
+
+/* Create a new data buffer filled with the content of file FNAME.
+ COPY must be non-zero (delayed reads are not supported yet). */
+gpgme_error_t
+gpgme_data_new_from_file (gpgme_data_t *dh, const char *fname, int copy)
+{
+ struct stat statbuf;
+
+ if (!fname || !copy)
+ return gpg_error (GPG_ERR_INV_VALUE);
+
+ if (stat (fname, &statbuf) < 0)
+ return gpg_error_from_errno (errno);
+
+ return gpgme_data_new_from_filepart (dh, fname, NULL, 0, statbuf.st_size);
+}
+
+
+static int
+gpgme_error_to_errno (gpgme_error_t err)
+{
+ int no = gpg_err_code_to_errno (err);
+
+ if (no)
+ {
+ errno = no;
+ return -1;
+ }
+
+ switch (gpg_err_code (err))
+ {
+ case GPG_ERR_EOF:
+ return 0;
+ case GPG_ERR_INV_VALUE:
+ errno = EINVAL;
+ return -1;
+ case GPG_ERR_NOT_SUPPORTED:
+ errno = ENOSYS;
+ return -1;
+ default:
+ /* FIXME: Yeah, well. */
+ errno = EINVAL;
+ return -1;
+ }
+}
+
+
+static ssize_t
+old_user_read (gpgme_data_t dh, void *buffer, size_t size)
+{
+ size_t amt;
+ gpgme_error_t err = (*dh->data.old_user.cb) (dh->data.old_user.handle,
+ buffer, size, &amt);
+ if (err)
+ return gpgme_error_to_errno (err);
+ return amt;
+}
+
+
+static off_t
+old_user_seek (gpgme_data_t dh, off_t offset, int whence)
+{
+ gpgme_error_t err;
+ if (whence != SEEK_SET || offset)
+ return EINVAL;
+ err = (*dh->data.old_user.cb) (dh->data.old_user.handle, NULL, 0, NULL);
+ if (err)
+ return gpgme_error_to_errno (err);
+ return 0;
+}
+
+
+static struct _gpgme_data_cbs old_user_cbs =
+ {
+ old_user_read,
+ NULL,
+ old_user_seek,
+ NULL
+ };
+
+
+/* Create a new data buffer which retrieves the data from the callback
+ function READ_CB. */
+gpgme_error_t
+gpgme_data_new_with_read_cb (gpgme_data_t *dh,
+ int (*read_cb) (void *, char *, size_t, size_t *),
+ void *read_cb_value)
+{
+ gpgme_error_t err = _gpgme_data_new (dh, &old_user_cbs);
+ if (err)
+ return err;
+
+ (*dh)->data.old_user.cb = read_cb;
+ (*dh)->data.old_user.handle = read_cb_value;
+ return 0;
+}
+
+
+gpgme_error_t
+gpgme_data_rewind (gpgme_data_t dh)
+{
+ return (gpgme_data_seek (dh, 0, SEEK_SET) == -1)
+ ? gpg_error_from_errno (errno) : 0;
+}