484 lines
19 KiB
C
484 lines
19 KiB
C
/* assuan.c - Definitions for the Assuan IPC library
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* Copyright (C) 2001, 2002, 2003, 2005 Free Software Foundation, Inc.
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*
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* This file is part of Assuan.
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*
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* Assuan is free software; you can redistribute it and/or modify it
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* under the terms of the GNU Lesser General Public License as
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* published by the Free Software Foundation; either version 2.1 of
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* the License, or (at your option) any later version.
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*
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* Assuan is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
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*/
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#ifndef ASSUAN_H
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#define ASSUAN_H
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#include <stdio.h>
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#include <sys/types.h>
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#include <unistd.h>
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/* To use this file with libraries the following macros are often
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useful:
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#define _ASSUAN_EXT_SYM_PREFIX _foo_
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This prefixes all external symbols with "_foo_".
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#define _ASSUAN_NO_PTH
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This avoids inclusion of special GNU Pth hacks.
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#define _ASSUAN_NO_FIXED_SIGNALS
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This disables changing of certain signal handler; i.e. SIGPIPE.
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#define _ASSUAN_USE_DOUBLE_FORK
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Use a double fork approach when connecting to a server through a pipe.
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*/
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/**** Begin GPGME specific modifications. ******/
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#define _ASSUAN_EXT_SYM_PREFIX _gpgme_
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#define _ASSUAN_NO_PTH
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#define _ASSUAN_NO_FIXED_SIGNALS
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#define _ASSUAN_USE_DOUBLE_FORK
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#ifdef _ASSUAN_IN_GPGME_BUILD_ASSUAN
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int _gpgme_io_read (int fd, void *buffer, size_t count);
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int _gpgme_io_write (int fd, const void *buffer, size_t count);
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ssize_t _gpgme_ath_waitpid (pid_t pid, int *status, int options);
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#ifdef HAVE_W32_SYSTEM
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int _gpgme_ath_accept (int s, void *addr, int *length_ptr);
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#else /*!HAVE_W32_SYSTEM*/
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struct sockaddr;
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struct msghdr;
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ssize_t _gpgme_ath_select (int nfd, fd_set *rset, fd_set *wset, fd_set *eset,
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struct timeval *timeout);
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int _gpgme_ath_accept (int s, struct sockaddr *addr, socklen_t *length_ptr);
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int _gpgme_ath_connect (int s, struct sockaddr *addr, socklen_t length);
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int _gpgme_ath_sendmsg (int s, const struct msghdr *msg, int flags);
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int _gpgme_ath_recvmsg (int s, struct msghdr *msg, int flags);
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#endif /*!HAVE_W32_SYSTEM*/
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#define read _gpgme_io_read
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#define write _gpgme_io_write
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#define waitpid _gpgme_ath_waitpid
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#define select _gpgme_ath_select
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#define accept _gpgme_ath_accept
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#define connect _gpgme_ath_connect
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#define sendmsg _gpgme_ath_sendmsg
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#define recvmsg _gpgme_ath_recvmsg
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#endif /*_ASSUAN_IN_GPGME_BUILD_ASSUAN*/
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/**** End GPGME specific modifications. ******/
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#ifdef _ASSUAN_EXT_SYM_PREFIX
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#define _ASSUAN_PREFIX1(x,y) x ## y
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#define _ASSUAN_PREFIX2(x,y) _ASSUAN_PREFIX1(x,y)
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#define _ASSUAN_PREFIX(x) _ASSUAN_PREFIX2(_ASSUAN_EXT_SYM_PREFIX,x)
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#define assuan_ _ASSUAN_PREFIX(assuan_)
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#define assuan_register_command _ASSUAN_PREFIX(assuan_register_command)
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#define assuan_register_bye_notify _ASSUAN_PREFIX(assuan_register_bye_notify)
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#define assuan_register_reset_notify \
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_ASSUAN_PREFIX(assuan_register_reset_notify)
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#define assuan_register_cancel_notify \
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_ASSUAN_PREFIX(assuan_register_cancel_notify)
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#define assuan_register_input_notify \
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_ASSUAN_PREFIX(assuan_register_input_notify)
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#define assuan_register_output_notify \
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_ASSUAN_PREFIX(assuan_register_output_notify)
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#define assuan_register_option_handler \
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_ASSUAN_PREFIX(assuan_register_option_handler)
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#define assuan_process _ASSUAN_PREFIX(assuan_process)
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#define assuan_process_next _ASSUAN_PREFIX(assuan_process_next)
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#define assuan_get_active_fds _ASSUAN_PREFIX(assuan_get_active_fds)
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#define assuan_get_data_fp _ASSUAN_PREFIX(assuan_get_data_fp)
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#define assuan_set_okay_line _ASSUAN_PREFIX(assuan_set_okay_line)
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#define assuan_write_status _ASSUAN_PREFIX(assuan_write_status)
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#define assuan_command_parse_fd _ASSUAN_PREFIX(assuan_command_parse_fd)
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#define assuan_set_hello_line _ASSUAN_PREFIX(assuan_set_hello_line)
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#define assuan_accept _ASSUAN_PREFIX(assuan_accept)
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#define assuan_get_input_fd _ASSUAN_PREFIX(assuan_get_input_fd)
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#define assuan_get_output_fd _ASSUAN_PREFIX(assuan_get_output_fd)
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#define assuan_close_input_fd _ASSUAN_PREFIX(assuan_close_input_fd)
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#define assuan_close_output_fd _ASSUAN_PREFIX(assuan_close_output_fd)
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#define assuan_init_pipe_server _ASSUAN_PREFIX(assuan_init_pipe_server)
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#define assuan_deinit_server _ASSUAN_PREFIX(assuan_deinit_server)
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#define assuan_init_socket_server _ASSUAN_PREFIX(assuan_init_socket_server)
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#define assuan_init_connected_socket_server \
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_ASSUAN_PREFIX(assuan_init_connected_socket_server)
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#define assuan_pipe_connect _ASSUAN_PREFIX(assuan_pipe_connect)
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#define assuan_socket_connect _ASSUAN_PREFIX(assuan_socket_connect)
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#define assuan_domain_connect _ASSUAN_PREFIX(assuan_domain_connect)
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#define assuan_init_domain_server _ASSUAN_PREFIX(assuan_init_domain_server)
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#define assuan_disconnect _ASSUAN_PREFIX(assuan_disconnect)
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#define assuan_get_pid _ASSUAN_PREFIX(assuan_get_pid)
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#define assuan_transact _ASSUAN_PREFIX(assuan_transact)
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#define assuan_inquire _ASSUAN_PREFIX(assuan_inquire)
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#define assuan_read_line _ASSUAN_PREFIX(assuan_read_line)
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#define assuan_pending_line _ASSUAN_PREFIX(assuan_pending_line)
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#define assuan_write_line _ASSUAN_PREFIX(assuan_write_line)
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#define assuan_send_data _ASSUAN_PREFIX(assuan_send_data)
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#define assuan_sendfd _ASSUAN_PREFIX(assuan_sendfd)
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#define assuan_receivefd _ASSUAN_PREFIX(assuan_receivefd)
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#define assuan_set_malloc_hooks _ASSUAN_PREFIX(assuan_set_malloc_hooks)
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#define assuan_set_log_stream _ASSUAN_PREFIX(assuan_set_log_stream)
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#define assuan_set_error _ASSUAN_PREFIX(assuan_set_error)
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#define assuan_set_pointer _ASSUAN_PREFIX(assuan_set_pointer)
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#define assuan_get_pointer _ASSUAN_PREFIX(assuan_get_pointer)
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#define assuan_begin_confidential _ASSUAN_PREFIX(assuan_begin_confidential)
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#define assuan_end_confidential _ASSUAN_PREFIX(assuan_end_confidential)
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#define assuan_strerror _ASSUAN_PREFIX(assuan_strerror)
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#define assuan_set_assuan_log_stream \
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_ASSUAN_PREFIX(assuan_set_assuan_log_stream)
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#define assuan_get_assuan_log_stream \
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_ASSUAN_PREFIX(assuan_get_assuan_log_stream)
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#define assuan_get_assuan_log_prefix \
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_ASSUAN_PREFIX(assuan_get_assuan_log_prefix)
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#define assuan_set_flag _ASSUAN_PREFIX(assuan_set_flag)
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#define assuan_get_flag _ASSUAN_PREFIX(assuan_get_flag)
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/* And now the internal functions, argh... */
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#define _assuan_read_line _ASSUAN_PREFIX(_assuan_read_line)
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#define _assuan_cookie_write_data _ASSUAN_PREFIX(_assuan_cookie_write_data)
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#define _assuan_cookie_write_flush _ASSUAN_PREFIX(_assuan_cookie_write_flush)
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#define _assuan_read_from_server _ASSUAN_PREFIX(_assuan_read_from_server)
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#define _assuan_domain_init _ASSUAN_PREFIX(_assuan_domain_init)
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#define _assuan_register_std_commands \
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_ASSUAN_PREFIX(_assuan_register_std_commands)
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#define _assuan_simple_read _ASSUAN_PREFIX(_assuan_simple_read)
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#define _assuan_simple_write _ASSUAN_PREFIX(_assuan_simple_write)
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#define _assuan_simple_read _ASSUAN_PREFIX(_assuan_simple_read)
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#define _assuan_simple_write _ASSUAN_PREFIX(_assuan_simple_write)
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#define _assuan_new_context _ASSUAN_PREFIX(_assuan_new_context)
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#define _assuan_release_context _ASSUAN_PREFIX(_assuan_release_context)
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#define _assuan_malloc _ASSUAN_PREFIX(_assuan_malloc)
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#define _assuan_realloc _ASSUAN_PREFIX(_assuan_realloc)
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#define _assuan_calloc _ASSUAN_PREFIX(_assuan_calloc)
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#define _assuan_free _ASSUAN_PREFIX(_assuan_free)
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#define _assuan_log_print_buffer _ASSUAN_PREFIX(_assuan_log_print_buffer)
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#define _assuan_log_sanitized_string \
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_ASSUAN_PREFIX(_assuan_log_sanitized_string)
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#define _assuan_log_printf _ASSUAN_PREFIX(_assuan_log_printf)
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#define _assuan_set_default_log_stream \
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_ASSUAN_PREFIX(_assuan_set_default_log_stream)
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#define _assuan_w32_strerror _ASSUAN_PREFIX(_assuan_w32_strerror)
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#define _assuan_write_line _ASSUAN_PREFIX(_assuan_write_line)
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#define _assuan_close _ASSUAN_PREFIX(_assuan_close)
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#define _assuan_sock_new _ASSUAN_PREFIX(_assuan_sock_new)
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#define _assuan_sock_bind _ASSUAN_PREFIX(_assuan_sock_bind)
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#define _assuan_sock_connect _ASSUAN_PREFIX(_assuan_sock_connect)
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#endif /*_ASSUAN_EXT_SYM_PREFIX*/
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#ifdef __cplusplus
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extern "C"
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{
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#if 0
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}
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#endif
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#endif
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typedef enum
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{
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ASSUAN_No_Error = 0,
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ASSUAN_General_Error = 1,
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ASSUAN_Out_Of_Core = 2,
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ASSUAN_Invalid_Value = 3,
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ASSUAN_Timeout = 4,
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ASSUAN_Read_Error = 5,
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ASSUAN_Write_Error = 6,
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ASSUAN_Problem_Starting_Server = 7,
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ASSUAN_Not_A_Server = 8,
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ASSUAN_Not_A_Client = 9,
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ASSUAN_Nested_Commands = 10,
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ASSUAN_Invalid_Response = 11,
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ASSUAN_No_Data_Callback = 12,
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ASSUAN_No_Inquire_Callback = 13,
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ASSUAN_Connect_Failed = 14,
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ASSUAN_Accept_Failed = 15,
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/* Error codes above 99 are meant as status codes */
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ASSUAN_Not_Implemented = 100,
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ASSUAN_Server_Fault = 101,
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ASSUAN_Invalid_Command = 102,
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ASSUAN_Unknown_Command = 103,
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ASSUAN_Syntax_Error = 104,
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ASSUAN_Parameter_Error = 105,
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ASSUAN_Parameter_Conflict = 106,
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ASSUAN_Line_Too_Long = 107,
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ASSUAN_Line_Not_Terminated = 108,
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ASSUAN_No_Input = 109,
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ASSUAN_No_Output = 110,
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ASSUAN_Canceled = 111,
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ASSUAN_Unsupported_Algorithm = 112,
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ASSUAN_Server_Resource_Problem = 113,
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ASSUAN_Server_IO_Error = 114,
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ASSUAN_Server_Bug = 115,
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ASSUAN_No_Data_Available = 116,
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ASSUAN_Invalid_Data = 117,
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ASSUAN_Unexpected_Command = 118,
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ASSUAN_Too_Much_Data = 119,
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ASSUAN_Inquire_Unknown = 120,
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ASSUAN_Inquire_Error = 121,
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ASSUAN_Invalid_Option = 122,
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ASSUAN_Invalid_Index = 123,
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ASSUAN_Unexpected_Status = 124,
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ASSUAN_Unexpected_Data = 125,
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ASSUAN_Invalid_Status = 126,
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ASSUAN_Locale_Problem = 127,
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ASSUAN_Not_Confirmed = 128,
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/* Warning: Don't use the rror codes, below they are deprecated. */
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ASSUAN_Bad_Certificate = 201,
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ASSUAN_Bad_Certificate_Chain = 202,
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ASSUAN_Missing_Certificate = 203,
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ASSUAN_Bad_Signature = 204,
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ASSUAN_No_Agent = 205,
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ASSUAN_Agent_Error = 206,
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ASSUAN_No_Public_Key = 207,
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ASSUAN_No_Secret_Key = 208,
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ASSUAN_Invalid_Name = 209,
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ASSUAN_Cert_Revoked = 301,
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ASSUAN_No_CRL_For_Cert = 302,
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ASSUAN_CRL_Too_Old = 303,
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ASSUAN_Not_Trusted = 304,
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ASSUAN_Card_Error = 401,
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ASSUAN_Invalid_Card = 402,
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ASSUAN_No_PKCS15_App = 403,
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ASSUAN_Card_Not_Present = 404,
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ASSUAN_Invalid_Id = 405,
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/* Error codes in the range 1000 to 9999 may be used by applications
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at their own discretion. */
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ASSUAN_USER_ERROR_FIRST = 1000,
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ASSUAN_USER_ERROR_LAST = 9999
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} assuan_error_t;
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typedef assuan_error_t AssuanError; /* Deprecated. */
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/* This is a list of pre-registered ASSUAN commands */
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/* NOTE, these command IDs are now deprectated and solely exists for
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compatibility reasons. */
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typedef enum
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{
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ASSUAN_CMD_NOP = 0,
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ASSUAN_CMD_CANCEL, /* cancel the current request */
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ASSUAN_CMD_BYE,
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ASSUAN_CMD_AUTH,
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ASSUAN_CMD_RESET,
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ASSUAN_CMD_OPTION,
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ASSUAN_CMD_DATA,
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ASSUAN_CMD_END,
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ASSUAN_CMD_INPUT,
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ASSUAN_CMD_OUTPUT,
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ASSUAN_CMD_USER = 256 /* Other commands should be used with this offset*/
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} AssuanCommand;
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/* Definitions of flags for assuan_set_flag(). */
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typedef enum
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{
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/* When using a pipe server, by default Assuan will wait for the
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forked process to die in assuan_disconnect. In certain cases
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this is not desirable. By setting this flag, the waitpid will
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be skipped and the caller is responsible to cleanup a forked
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process. */
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ASSUAN_NO_WAITPID = 1
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}
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assuan_flag_t;
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#define ASSUAN_LINELENGTH 1002 /* 1000 + [CR,]LF */
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struct assuan_context_s;
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typedef struct assuan_context_s *assuan_context_t;
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typedef struct assuan_context_s *ASSUAN_CONTEXT;
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/*-- assuan-handler.c --*/
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int assuan_register_command (assuan_context_t ctx,
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const char *cmd_string,
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int (*handler)(assuan_context_t, char *));
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int assuan_register_bye_notify (assuan_context_t ctx,
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void (*fnc)(assuan_context_t));
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int assuan_register_reset_notify (assuan_context_t ctx,
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void (*fnc)(assuan_context_t));
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int assuan_register_cancel_notify (assuan_context_t ctx,
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void (*fnc)(assuan_context_t));
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int assuan_register_input_notify (assuan_context_t ctx,
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void (*fnc)(assuan_context_t, const char *));
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int assuan_register_output_notify (assuan_context_t ctx,
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void (*fnc)(assuan_context_t, const char *));
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int assuan_register_option_handler (assuan_context_t ctx,
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int (*fnc)(assuan_context_t,
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const char*, const char*));
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int assuan_process (assuan_context_t ctx);
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int assuan_process_next (assuan_context_t ctx);
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int assuan_get_active_fds (assuan_context_t ctx, int what,
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int *fdarray, int fdarraysize);
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FILE *assuan_get_data_fp (assuan_context_t ctx);
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assuan_error_t assuan_set_okay_line (assuan_context_t ctx, const char *line);
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assuan_error_t assuan_write_status (assuan_context_t ctx,
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const char *keyword, const char *text);
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/* Negotiate a file descriptor. If LINE contains "FD=N", returns N
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assuming a local file descriptor. If LINE contains "FD" reads a
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file descriptor via CTX and stores it in *RDF (the CTX must be
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capable of passing file descriptors). */
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assuan_error_t assuan_command_parse_fd (assuan_context_t ctx, char *line,
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int *rfd);
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/*-- assuan-listen.c --*/
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assuan_error_t assuan_set_hello_line (assuan_context_t ctx, const char *line);
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assuan_error_t assuan_accept (assuan_context_t ctx);
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int assuan_get_input_fd (assuan_context_t ctx);
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int assuan_get_output_fd (assuan_context_t ctx);
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assuan_error_t assuan_close_input_fd (assuan_context_t ctx);
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assuan_error_t assuan_close_output_fd (assuan_context_t ctx);
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/*-- assuan-pipe-server.c --*/
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int assuan_init_pipe_server (assuan_context_t *r_ctx, int filedes[2]);
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void assuan_deinit_server (assuan_context_t ctx);
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/*-- assuan-socket-server.c --*/
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int assuan_init_socket_server (assuan_context_t *r_ctx, int listen_fd);
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int assuan_init_connected_socket_server (assuan_context_t *r_ctx, int fd);
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/*-- assuan-pipe-connect.c --*/
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assuan_error_t assuan_pipe_connect (assuan_context_t *ctx, const char *name,
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char *const argv[], int *fd_child_list);
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assuan_error_t assuan_pipe_connect2 (assuan_context_t *ctx, const char *name,
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char *const argv[], int *fd_child_list,
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void (*atfork) (void*, int),
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void *atforkvalue);
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/*-- assuan-socket-connect.c --*/
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assuan_error_t assuan_socket_connect (assuan_context_t *ctx, const char *name,
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pid_t server_pid);
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/*-- assuan-domain-connect.c --*/
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/* Connect to a Unix domain socket server. RENDEZVOUSFD is
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bidirectional file descriptor (normally returned via socketpair)
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which the client can use to rendezvous with the server. SERVER s
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the server's pid. */
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assuan_error_t assuan_domain_connect (assuan_context_t *r_ctx,
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int rendezvousfd,
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pid_t server);
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/*-- assuan-domain-server.c --*/
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/* RENDEZVOUSFD is a bidirectional file descriptor (normally returned
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via socketpair) that the domain server can use to rendezvous with
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the client. CLIENT is the client's pid. */
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assuan_error_t assuan_init_domain_server (assuan_context_t *r_ctx,
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int rendezvousfd,
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pid_t client);
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/*-- assuan-connect.c --*/
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void assuan_disconnect (assuan_context_t ctx);
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pid_t assuan_get_pid (assuan_context_t ctx);
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/*-- assuan-client.c --*/
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assuan_error_t
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assuan_transact (assuan_context_t ctx,
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const char *command,
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assuan_error_t (*data_cb)(void *, const void *, size_t),
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void *data_cb_arg,
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assuan_error_t (*inquire_cb)(void*, const char *),
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void *inquire_cb_arg,
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assuan_error_t (*status_cb)(void*, const char *),
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void *status_cb_arg);
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/*-- assuan-inquire.c --*/
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assuan_error_t assuan_inquire (assuan_context_t ctx, const char *keyword,
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unsigned char **r_buffer, size_t *r_length,
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|
size_t maxlen);
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/*-- assuan-buffer.c --*/
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assuan_error_t assuan_read_line (assuan_context_t ctx,
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char **line, size_t *linelen);
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int assuan_pending_line (assuan_context_t ctx);
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assuan_error_t assuan_write_line (assuan_context_t ctx, const char *line );
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assuan_error_t assuan_send_data (assuan_context_t ctx,
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const void *buffer, size_t length);
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|
/* The file descriptor must be pending before assuan_receivefd is
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|
call. This means that assuan_sendfd should be called *before* the
|
|
trigger is sent (normally via assuan_send_data ("I sent you a
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|
descriptor")). */
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assuan_error_t assuan_sendfd (assuan_context_t ctx, int fd);
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assuan_error_t assuan_receivefd (assuan_context_t ctx, int *fd);
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/*-- assuan-util.c --*/
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|
void assuan_set_malloc_hooks ( void *(*new_alloc_func)(size_t n),
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void *(*new_realloc_func)(void *p, size_t n),
|
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void (*new_free_func)(void*) );
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void assuan_set_log_stream (assuan_context_t ctx, FILE *fp);
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int assuan_set_error (assuan_context_t ctx, int err, const char *text);
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void assuan_set_pointer (assuan_context_t ctx, void *pointer);
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void *assuan_get_pointer (assuan_context_t ctx);
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|
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void assuan_begin_confidential (assuan_context_t ctx);
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void assuan_end_confidential (assuan_context_t ctx);
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/* For context CTX, set the flag FLAG to VALUE. Values for flags
|
|
are usually 1 or 0 but certain flags might allow for other values;
|
|
see the description of the type assuan_flag_t for details. */
|
|
void assuan_set_flag (assuan_context_t ctx, assuan_flag_t flag, int value);
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|
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/* Return the VALUE of FLAG in context CTX. */
|
|
int assuan_get_flag (assuan_context_t ctx, assuan_flag_t flag);
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|
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/*-- assuan-errors.c (built) --*/
|
|
const char *assuan_strerror (assuan_error_t err);
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|
|
|
/*-- assuan-logging.c --*/
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|
|
|
/* Set the stream to which assuan should log message not associated
|
|
with a context. By default, this is stderr. The default value
|
|
will be changed when the first log stream is associated with a
|
|
context. Note, that this function is not thread-safe and should
|
|
in general be used right at startup. */
|
|
extern void assuan_set_assuan_log_stream (FILE *fp);
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|
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/* Return the stream which is currently being using for global logging. */
|
|
extern FILE *assuan_get_assuan_log_stream (void);
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|
|
|
/* Set the prefix to be used at the start of a line emitted by assuan
|
|
on the log stream. The default is the empty string. Note, that
|
|
this function is not thread-safe and should in general be used
|
|
right at startup. */
|
|
void assuan_set_assuan_log_prefix (const char *text);
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|
|
|
/* Return a prefix to be used at the start of a line emitted by assuan
|
|
on the log stream. The default implementation returns the empty
|
|
string, i.e. "" */
|
|
const char *assuan_get_assuan_log_prefix (void);
|
|
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|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
#endif /* ASSUAN_H */
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