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Diffstat (limited to 'agent/gpg-stream.h')
| -rw-r--r-- | agent/gpg-stream.h | 148 |
1 files changed, 148 insertions, 0 deletions
diff --git a/agent/gpg-stream.h b/agent/gpg-stream.h new file mode 100644 index 000000000..d9c30f8bf --- /dev/null +++ b/agent/gpg-stream.h @@ -0,0 +1,148 @@ +/* stream.h - Stream I/O layer + Copyright (C) 2004 g10 Code GmbH + + This file is part of libgpg-stream. + + libgpg-stream 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. + + libgpg-stream 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 General Public License + along with libgpg-stream; if not, write to the Free Software + Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA + 02111-1307, USA. */ + +#ifndef GPG_STREAM_H +#define GPG_STREAM_H + +#include <sys/types.h> +#include <stdarg.h> + +#include <gpg-error.h> + + + +#define STREAM_BLOCK_SIZE 1024 + + + +typedef struct gpg_stream *gpg_stream_t; + +typedef gpg_error_t (*gpg_stream_func_create_t) (void **handle, + void *spec, + unsigned int flags); +typedef gpg_error_t (*gpg_stream_func_read_t) (void *handle, + char *buffer, + size_t bytes_to_read, + size_t *bytes_read); +typedef gpg_error_t (*gpg_stream_func_write_t) (void *handle, + const char *buffer, + size_t bytes_to_write, + size_t *bytes_written); +typedef gpg_error_t (*gpg_stream_func_seek_t) (void *handle, + off_t pos, + int whence); +typedef gpg_error_t (*gpg_stream_func_stat_t) (void *handle, + size_t *size); +typedef gpg_error_t (*gpg_stream_func_destroy_t) (void *handle); + +typedef struct gpg_stream_functions +{ + gpg_stream_func_create_t func_create; + gpg_stream_func_read_t func_read; + gpg_stream_func_write_t func_write; + gpg_stream_func_seek_t func_seek; + gpg_stream_func_stat_t func_stat; + gpg_stream_func_destroy_t func_destroy; +} gpg_stream_functions_t; + +#define GPG_STREAM_FLAG_READ (1 << 0) +#define GPG_STREAM_FLAG_WRITE (1 << 1) +#define GPG_STREAM_FLAG_EXCLUSIVE (1 << 2) +#define GPG_STREAM_FLAG_APPEND (1 << 3) +#define GPG_STREAM_FLAG_CREATE (1 << 4) +#define GPG_STREAM_FLAG_NONBLOCK (1 << 5) +#define GPG_STREAM_FLAG_TRUNCATE (1 << 6) +#define GPG_STREAM_FLAG_BINARY (1 << 7) + +gpg_error_t gpg_stream_create (gpg_stream_t *stream, + void *spec, + unsigned int flags, + gpg_stream_functions_t functions); + +gpg_error_t gpg_stream_create_file (gpg_stream_t *stream, + const char *filename, + unsigned int flags); + +gpg_error_t gpg_stream_create_fd (gpg_stream_t *stream, + int fd, + unsigned int flags); + +gpg_error_t gpg_stream_destroy (gpg_stream_t stream); + +gpg_error_t gpg_stream_read (gpg_stream_t stream, + char *buffer, + size_t bytes_to_read, + size_t *bytes_read); + +gpg_error_t gpg_stream_write (gpg_stream_t stream, + const char *buffer, + size_t bytes_to_write, + size_t *bytes_written); + +gpg_error_t gpg_stream_read_line (gpg_stream_t stream, + char **line, + size_t *line_length); + +gpg_error_t gpg_stream_print_va (gpg_stream_t stream, + const char *format, + va_list ap); + +gpg_error_t gpg_stream_print (gpg_stream_t stream, + const char *format, + ...); + +gpg_error_t gpg_stream_flush (gpg_stream_t stream); + +gpg_error_t gpg_stream_peek (gpg_stream_t stream, + char **buffer, + size_t *size); + +gpg_error_t gpg_stream_seek (gpg_stream_t stream, + off_t offset, + int whence); + +gpg_error_t gpg_stream_stat (gpg_stream_t stream, + size_t *size); + +typedef struct gpg_stream_spec_mem +{ + char *memory; + size_t memory_size; + unsigned int grow: 1; +} gpg_stream_spec_mem_t; + +extern gpg_stream_functions_t gpg_stream_functions_mem; + +typedef struct gpg_stream_spec_file +{ + const char *filename; + mode_t mode; +} gpg_stream_spec_file_t; + +extern gpg_stream_functions_t gpg_stream_functions_file; + +typedef struct gpg_stream_spec_fd +{ + int fd; +} gpg_stream_spec_fd_t; + +extern gpg_stream_functions_t gpg_stream_functions_fd; + +#endif |