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324 lines
10 KiB
324 lines
10 KiB
/* assuan-defs.c - Internal definitions to Assuan
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* Copyright (C) 2001, 2002, 2004, 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
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* USA.
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*/
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#ifndef ASSUAN_DEFS_H
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#define ASSUAN_DEFS_H
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#include <sys/types.h>
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#ifndef HAVE_W32_SYSTEM
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#include <sys/socket.h>
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#include <sys/un.h>
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#else
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#include <windows.h>
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#endif
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#include <unistd.h>
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#include "assuan.h"
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#ifndef HAVE_W32_SYSTEM
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#define DIRSEP_C '/'
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#else
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#define DIRSEP_C '\\'
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#endif
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#ifdef HAVE_W32_SYSTEM
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#define AF_LOCAL AF_UNIX
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/* We need to prefix the structure with a sockaddr_in header so we can
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use it later for sendto and recvfrom. */
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struct sockaddr_un
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{
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short sun_family;
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unsigned short sun_port;
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struct in_addr sun_addr;
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char sun_path[108-2-4]; /* Path name. */
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};
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/* Not needed anymore because the current mingw32 defines this in
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sys/types.h */
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/* typedef int ssize_t; */
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/* Missing W32 functions */
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int putc_unlocked (int c, FILE *stream);
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void * memrchr (const void *block, int c, size_t size);
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char * stpcpy (char *dest, const char *src);
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#endif
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#define LINELENGTH ASSUAN_LINELENGTH
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struct cmdtbl_s
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{
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const char *name;
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int (*handler)(assuan_context_t, char *line);
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};
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/* A structure to dispatch I/O functions. All these functions need to
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return 0 on success and set ERRNO on failure. */
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struct assuan_io
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{
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/* Routine to read from input_fd. */
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ssize_t (*readfnc) (assuan_context_t, void *, size_t);
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/* Routine to write to output_fd. */
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ssize_t (*writefnc) (assuan_context_t, const void *, size_t);
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/* Send a file descriptor. */
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assuan_error_t (*sendfd) (assuan_context_t, int);
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/* Receive a file descriptor. */
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assuan_error_t (*receivefd) (assuan_context_t, int *);
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};
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/* The context we use with most functions. */
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struct assuan_context_s
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{
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assuan_error_t err_no;
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const char *err_str;
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int os_errno; /* Last system error number used with certain
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error codes. */
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/* Context specific flags (cf. assuan_flag_t). */
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struct
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{
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unsigned int no_waitpid:1; /* See ASSUAN_NO_WAITPID. */
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} flags;
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int confidential;
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int is_server; /* Set if this is context belongs to a server */
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int in_inquire;
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char *hello_line;
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char *okay_line; /* See assuan_set_okay_line() */
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void *user_pointer; /* For assuan_get_pointer and assuan_set_pointer (). */
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FILE *log_fp;
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struct {
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int fd;
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int eof;
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char line[LINELENGTH];
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int linelen; /* w/o CR, LF - might not be the same as
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strlen(line) due to embedded nuls. However a nul
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is always written at this pos. */
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struct {
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char line[LINELENGTH];
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int linelen ;
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int pending; /* i.e. at least one line is available in the attic */
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} attic;
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} inbound;
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struct {
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int fd;
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struct {
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FILE *fp;
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char line[LINELENGTH];
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int linelen;
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int error;
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} data;
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} outbound;
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int pipe_mode; /* We are in pipe mode, i.e. we can handle just one
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connection and must terminate then. */
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pid_t pid; /* The pid of the peer. */
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int listen_fd; /* The fd we are listening on (used by socket servers) */
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int connected_fd; /* helper */
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struct {
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int valid; /* Whether this structure has valid information. */
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pid_t pid; /* The pid of the peer. */
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uid_t uid; /* The uid of the peer. */
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gid_t gid; /* The gid of the peer. */
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} peercred;
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/* Used for Unix domain sockets. */
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struct sockaddr_un myaddr;
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struct sockaddr_un serveraddr;
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/* Structure used for unix domain socket buffering. FIXME: We don't
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use datagrams anymore thus we could get away with a simpler
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buffering approach. */
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struct {
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void *buffer; /* Malloced buffer. */
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int bufferallocated; /* Memory allocated. */
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int bufferoffset; /* Offset of start of buffer. */
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int buffersize; /* Bytes buffered. */
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int pendingfds[5]; /* Array to save received descriptors. */
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int pendingfdscount; /* Number of received descriptors. */
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} uds;
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void (*deinit_handler)(assuan_context_t);
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int (*accept_handler)(assuan_context_t);
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int (*finish_handler)(assuan_context_t);
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struct cmdtbl_s *cmdtbl;
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size_t cmdtbl_used; /* used entries */
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size_t cmdtbl_size; /* allocated size of table */
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void (*bye_notify_fnc)(assuan_context_t);
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void (*reset_notify_fnc)(assuan_context_t);
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void (*cancel_notify_fnc)(assuan_context_t);
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int (*option_handler_fnc)(assuan_context_t,const char*, const char*);
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void (*input_notify_fnc)(assuan_context_t, const char *);
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void (*output_notify_fnc)(assuan_context_t, const char *);
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/* This function is called right after a command has been processed.
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It may be used to command related cleanup. */
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void (*post_cmd_notify_fnc)(assuan_context_t, int);
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/* If set, this is called right before logging an I/O line. With
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DIRECTION set to 1 it is called for an output oeration; 0 means
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an input operation. If bit 0 is set in the return value, the
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logging of the will be suppressed. With bit 1 set, the entire
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line will be ignored. */
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unsigned int (*io_monitor)(assuan_context_t ctx,
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int direction,
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const char *line,
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size_t linelen);
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int input_fd; /* set by INPUT command */
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int output_fd; /* set by OUTPUT command */
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/* io routines. */
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struct assuan_io *io;
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};
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/*-- assuan-pipe-server.c --*/
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int _assuan_new_context (assuan_context_t *r_ctx);
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void _assuan_release_context (assuan_context_t ctx);
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/*-- assuan-uds.c --*/
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void _assuan_uds_close_fds (assuan_context_t ctx);
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void _assuan_uds_deinit (assuan_context_t ctx);
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void _assuan_init_uds_io (assuan_context_t ctx);
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/*-- assuan-handler.c --*/
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int _assuan_register_std_commands (assuan_context_t ctx);
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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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int _assuan_cookie_write_data (void *cookie, const char *buffer, size_t size);
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int _assuan_cookie_write_flush (void *cookie);
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assuan_error_t _assuan_write_line (assuan_context_t ctx, const char *prefix,
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const char *line, size_t len);
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/*-- assuan-client.c --*/
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assuan_error_t _assuan_read_from_server (assuan_context_t ctx,
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int *okay, int *off);
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/*-- assuan-error.c --*/
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/* Map error codes as used in this implementaion to the libgpg-error
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codes. */
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assuan_error_t _assuan_error (int oldcode);
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/* Extrac the erro code from A. This works for both the old and the
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new style error codes. This needs to be whenever an error code is
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compared. */
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#define err_code(a) ((a) & 0x00ffffff)
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/* Check whether A is the erro code for EOF. We allow forold and new
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style EOF error codes here. */
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#define err_is_eof(a) ((a) == (-1) || err_code (a) == 16383)
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/*-- assuan-util.c --*/
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void *_assuan_malloc (size_t n);
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void *_assuan_calloc (size_t n, size_t m);
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void *_assuan_realloc (void *p, size_t n);
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void _assuan_free (void *p);
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#define xtrymalloc(a) _assuan_malloc ((a))
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#define xtrycalloc(a,b) _assuan_calloc ((a),(b))
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#define xtryrealloc(a,b) _assuan_realloc((a),(b))
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#define xfree(a) _assuan_free ((a))
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#define set_error(c,e,t) \
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assuan_set_error ((c), _assuan_error (ASSUAN_ ## e), (t))
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#ifdef HAVE_W32_SYSTEM
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const char *_assuan_w32_strerror (int ec);
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#define w32_strerror(e) _assuan_w32_strerror ((e))
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#endif /*HAVE_W32_SYSTEM*/
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/*-- assuan-logging.c --*/
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void _assuan_set_default_log_stream (FILE *fp);
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void _assuan_log_printf (const char *format, ...)
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#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 5 )
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__attribute__ ((format (printf,1,2)))
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#endif
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;
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void _assuan_log_print_buffer (FILE *fp, const void *buffer, size_t length);
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void _assuan_log_sanitized_string (const char *string);
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/*-- assuan-io.c --*/
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pid_t _assuan_waitpid (pid_t pid, int *status, int options);
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ssize_t _assuan_simple_read (assuan_context_t ctx, void *buffer, size_t size);
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ssize_t _assuan_simple_write (assuan_context_t ctx, const void *buffer,
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size_t size);
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ssize_t _assuan_simple_sendmsg (assuan_context_t ctx, struct msghdr *msg);
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ssize_t _assuan_simple_recvmsg (assuan_context_t ctx, struct msghdr *msg);
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/*-- assuan-socket.c --*/
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int _assuan_close (int fd);
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int _assuan_sock_new (int domain, int type, int proto);
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int _assuan_sock_bind (int sockfd, struct sockaddr *addr, int addrlen);
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int _assuan_sock_connect (int sockfd, struct sockaddr *addr, int addrlen);
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#ifdef HAVE_FOPENCOOKIE
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/* We have to implement funopen in terms of glibc's fopencookie. */
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FILE *_assuan_funopen(void *cookie,
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cookie_read_function_t *readfn,
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cookie_write_function_t *writefn,
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cookie_seek_function_t *seekfn,
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cookie_close_function_t *closefn);
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#define funopen(a,r,w,s,c) _assuan_funopen ((a), (r), (w), (s), (c))
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#endif /*HAVE_FOPENCOOKIE*/
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/* Prototypes for replacement functions. */
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#ifndef HAVE_MEMRCHR
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void *memrchr (const void *block, int c, size_t size);
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#endif
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#ifndef HAVE_STPCPY
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char *stpcpy (char *dest, const char *src);
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#endif
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#ifndef HAVE_SETENV
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#define setenv _assuan_setenv
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#define unsetenv _assuan_unsetenv
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#define clearenv _assuan_clearenv
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int setenv (const char *name, const char *value, int replace);
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#endif
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#ifndef HAVE_PUTC_UNLOCKED
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int putc_unlocked (int c, FILE *stream);
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#endif
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#define DIM(v) (sizeof(v)/sizeof((v)[0]))
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#define DIMof(type,member) DIM(((type *)0)->member)
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#endif /*ASSUAN_DEFS_H*/
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