Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.

BUG:215923


git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdepim@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 293 insertions, 0 deletions

diff --git a/libkdenetwork/libgpgme-copy/gpgme/data.c b/libkdenetwork/libgpgme-copy/gpgme/data.c
new file mode 100644
index 000000000..22768ff53
--- /dev/null
+++ b/libkdenetwork/libgpgme-copy/gpgme/data.c
@@ -0,0 +1,293 @@
+/* data.c - An abstraction for data objects.
+   Copyright (C) 2002, 2003, 2004, 2005 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., 59 Temple Place - Suite 330, Boston, MA
+   02111-1307, USA.  */
+
+#if HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <stdlib.h>
+#include <unistd.h>
+#include <errno.h>
+#include <string.h>
+
+#include "gpgme.h"
+#include "data.h"
+#include "util.h"
+#include "ops.h"
+#include "priv-io.h"
+
+
+gpgme_error_t
+_gpgme_data_new (gpgme_data_t *r_dh, struct _gpgme_data_cbs *cbs)
+{
+  gpgme_data_t dh;
+
+  if (!r_dh)
+    return gpg_error (GPG_ERR_INV_VALUE);
+
+  *r_dh = NULL;
+  dh = calloc (1, sizeof (*dh));
+  if (!dh)
+    return gpg_error_from_errno (errno);
+
+  dh->cbs = cbs;
+
+  *r_dh = dh;
+  return 0;
+}
+
+
+void
+_gpgme_data_release (gpgme_data_t dh)
+{
+  if (!dh)
+    return;
+
+  if (dh->file_name)
+    free (dh->file_name);
+  free (dh);
+}
+
+
+/* Read up to SIZE bytes into buffer BUFFER from the data object with
+   the handle DH.  Return the number of characters read, 0 on EOF and
+   -1 on error.  If an error occurs, errno is set.  */
+ssize_t
+gpgme_data_read (gpgme_data_t dh, void *buffer, size_t size)
+{
+  if (!dh)
+    {
+      errno = EINVAL;
+      return -1;
+    }
+  if (!dh->cbs->read)
+    {
+      errno = ENOSYS;
+      return -1;
+    }
+  return (*dh->cbs->read) (dh, buffer, size);
+}
+
+
+/* Write up to SIZE bytes from buffer BUFFER to the data object with
+   the handle DH.  Return the number of characters written, or -1 on
+   error.  If an error occurs, errno is set.  */
+ssize_t
+gpgme_data_write (gpgme_data_t dh, const void *buffer, size_t size)
+{
+  if (!dh)
+    {
+      errno = EINVAL;
+      return -1;
+    }
+  if (!dh->cbs->write)
+    {
+      errno = ENOSYS;
+      return -1;
+    }
+  return (*dh->cbs->write) (dh, buffer, size);
+}
+
+
+/* Set the current position from where the next read or write starts
+   in the data object with the handle DH to OFFSET, relativ to
+   WHENCE.  */
+off_t
+gpgme_data_seek (gpgme_data_t dh, off_t offset, int whence)
+{
+  if (!dh)
+    {
+      errno = EINVAL;
+      return -1;
+    }
+  if (!dh->cbs->seek)
+    {
+      errno = ENOSYS;
+      return -1;
+    }
+
+  /* For relative movement, we must take into account the actual
+     position of the read counter.  */
+  if (whence == SEEK_CUR)
+    offset -= dh->pending_len;
+
+  offset = (*dh->cbs->seek) (dh, offset, whence);
+  if (offset >= 0)
+    dh->pending_len = 0;
+
+  return offset;
+}
+
+
+/* Release the data object with the handle DH.  */
+void
+gpgme_data_release (gpgme_data_t dh)
+{
+  if (!dh)
+    return;
+
+  if (dh->cbs->release)
+    (*dh->cbs->release) (dh);
+  _gpgme_data_release (dh);
+}
+
+
+/* Get the current encoding meta information for the data object with
+   handle DH.  */
+gpgme_data_encoding_t
+gpgme_data_get_encoding (gpgme_data_t dh)
+{
+  return dh ? dh->encoding : GPGME_DATA_ENCODING_NONE;
+}
+
+
+/* Set the encoding meta information for the data object with handle
+   DH to ENC.  */
+gpgme_error_t
+gpgme_data_set_encoding (gpgme_data_t dh, gpgme_data_encoding_t enc)
+{
+  if (!dh)
+    return gpg_error (GPG_ERR_INV_VALUE);
+  if (enc < 0 || enc > GPGME_DATA_ENCODING_ARMOR)
+    return gpg_error (GPG_ERR_INV_VALUE);
+  dh->encoding = enc;
+  return 0;
+}
+
+
+/* Set the file name associated with the data object with handle DH to
+   FILE_NAME.  */
+gpgme_error_t
+gpgme_data_set_file_name (gpgme_data_t dh, const char *file_name)
+{
+  if (!dh)
+    return gpg_error (GPG_ERR_INV_VALUE);
+
+  if (dh->file_name)
+    free (dh->file_name);
+
+  if (file_name)
+    {
+      dh->file_name = strdup (file_name);
+      if (!dh->file_name)
+	return gpg_error_from_errno (errno);
+    }
+  else
+    dh->file_name = 0;
+
+  return 0;
+}
+
+/* Get the file name associated with the data object with handle DH,
+   or NULL if there is none.  */
+char *
+gpgme_data_get_file_name (gpgme_data_t dh)
+{
+  if (!dh)
+    return NULL;
+
+  return dh->file_name;
+}
+
+
+/* Functions to support the wait interface.  */
+
+gpgme_error_t
+_gpgme_data_inbound_handler (void *opaque, int fd)
+{
+  gpgme_data_t dh = (gpgme_data_t) opaque;
+  char buffer[BUFFER_SIZE];
+  char *bufp = buffer;
+  ssize_t buflen;
+
+  buflen = _gpgme_io_read (fd, buffer, BUFFER_SIZE);
+  if (buflen < 0)
+    return gpg_error_from_errno (errno);
+  if (buflen == 0)
+    {
+      _gpgme_io_close (fd);
+      return 0;
+    }
+
+  do
+    {
+      ssize_t amt = gpgme_data_write (dh, bufp, buflen);
+      if (amt == 0 || (amt < 0 && errno != EINTR))
+	return gpg_error_from_errno (errno);
+      bufp += amt;
+      buflen -= amt;
+    }
+  while (buflen > 0);
+  return 0;
+}
+
+
+gpgme_error_t
+_gpgme_data_outbound_handler (void *opaque, int fd)
+{
+  gpgme_data_t dh = (gpgme_data_t) opaque;
+  ssize_t nwritten;
+
+  if (!dh->pending_len)
+    {
+      ssize_t amt = gpgme_data_read (dh, dh->pending, BUFFER_SIZE);
+      if (amt < 0)
+	return gpg_error_from_errno (errno);
+      if (amt == 0)
+	{
+	  _gpgme_io_close (fd);
+	  return 0;
+	}
+      dh->pending_len = amt;
+    }
+
+  nwritten = _gpgme_io_write (fd, dh->pending, dh->pending_len);
+  if (nwritten == -1 && errno == EAGAIN)
+    return 0;
+
+  if (nwritten == -1 && errno == EPIPE)
+    {
+      /* Not much we can do.  The other end closed the pipe, but we
+	 still have data.  This should only ever happen if the other
+	 end is going to tell us what happened on some other channel.
+	 Silently close our end.  */
+      _gpgme_io_close (fd);
+      return 0;
+    }
+
+  if (nwritten <= 0)
+    return gpg_error_from_errno (errno);
+
+  if (nwritten < dh->pending_len)
+    memmove (dh->pending, dh->pending + nwritten, dh->pending_len - nwritten);
+  dh->pending_len -= nwritten;
+  return 0;
+}
+
+
+/* Get the file descriptor associated with DH, if possible.  Otherwise
+   return -1.  */
+int
+_gpgme_data_get_fd (gpgme_data_t dh)
+{
+  if (!dh || !dh->cbs->get_fd)
+    return -1;
+  return (*dh->cbs->get_fd) (dh);
+}