diff options
Diffstat (limited to 'libkdenetwork/libgpgme-copy/gpgme/data.h')
-rw-r--r-- | libkdenetwork/libgpgme-copy/gpgme/data.h | 132 |
1 files changed, 132 insertions, 0 deletions
diff --git a/libkdenetwork/libgpgme-copy/gpgme/data.h b/libkdenetwork/libgpgme-copy/gpgme/data.h new file mode 100644 index 000000000..370751d5d --- /dev/null +++ b/libkdenetwork/libgpgme-copy/gpgme/data.h @@ -0,0 +1,132 @@ +/* data.h - Internal data object abstraction interface. + Copyright (C) 2002, 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. */ + +#ifndef DATA_H +#define DATA_H + +#if HAVE_CONFIG_H +#include <config.h> +#endif + +#include <sys/types.h> +#include <limits.h> + +#include "gpgme.h" + + +/* 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. */ +typedef ssize_t (*gpgme_data_read_cb) (gpgme_data_t dh, void *buffer, + size_t 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. */ +typedef ssize_t (*gpgme_data_write_cb) (gpgme_data_t dh, const void *buffer, + size_t 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. */ +typedef off_t (*gpgme_data_seek_cb) (gpgme_data_t dh, off_t offset, + int whence); + +/* Release the data object with the handle DH. */ +typedef void (*gpgme_data_release_cb) (gpgme_data_t dh); + +/* Get the FD associated with the handle DH, or -1. */ +typedef int (*gpgme_data_get_fd_cb) (gpgme_data_t dh); + +struct _gpgme_data_cbs +{ + gpgme_data_read_cb read; + gpgme_data_write_cb write; + gpgme_data_seek_cb seek; + gpgme_data_release_cb release; + gpgme_data_get_fd_cb get_fd; +}; + +struct gpgme_data +{ + struct _gpgme_data_cbs *cbs; + gpgme_data_encoding_t encoding; + +#ifdef PIPE_BUF +#define BUFFER_SIZE PIPE_BUF +#else +#ifdef _POSIX_PIPE_BUF +#define BUFFER_SIZE _POSIX_PIPE_BUF +#else +#define BUFFER_SIZE 512 +#endif +#endif + char pending[BUFFER_SIZE]; + int pending_len; + + /* File name of the data object. */ + char *file_name; + + union + { + /* For gpgme_data_new_from_fd. */ + int fd; + + /* For gpgme_data_new_from_stream. */ + FILE *stream; + + /* For gpgme_data_new_from_cbs. */ + struct + { + gpgme_data_cbs_t cbs; + void *handle; + } user; + + /* For gpgme_data_new_from_mem. */ + struct + { + char *buffer; + const char *orig_buffer; + /* Allocated size of BUFFER. */ + size_t size; + size_t length; + off_t offset; + } mem; + + /* For gpgme_data_new_from_read_cb. */ + struct + { + int (*cb) (void *, char *, size_t, size_t *); + void *handle; + } old_user; + } data; +}; + + +gpgme_error_t _gpgme_data_new (gpgme_data_t *r_dh, + struct _gpgme_data_cbs *cbs); + +void _gpgme_data_release (gpgme_data_t dh); + +/* Get the file descriptor associated with DH, if possible. Otherwise + return -1. */ +int _gpgme_data_get_fd (gpgme_data_t dh); + +#endif /* DATA_H */ |