146 lines
4.3 KiB
C
146 lines
4.3 KiB
C
/* misc. universal things
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* Copyright (C) 1997 Angelos D. Keromytis.
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* Copyright (C) 1998-2001 D. Hugh Redelmeier.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*
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* RCSID $Id: defs.h,v 1.10 2006/01/04 21:00:43 as Exp $
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*/
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#ifndef _DEFS_H
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#define _DEFS_H
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#include <sys/types.h>
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#ifdef KLIPS
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# define USED_BY_KLIPS /* ignore */
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#else
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# define USED_BY_KLIPS UNUSED
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#endif
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#ifdef DEBUG
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# define USED_BY_DEBUG /* ignore */
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#else
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# define USED_BY_DEBUG UNUSED
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#endif
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/* Length of temporary buffers */
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#define BUF_LEN 512
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/* type of serial number of a state object
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* Needed in connections.h and state.h; here to simplify dependencies.
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*/
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typedef unsigned long so_serial_t;
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#define SOS_NOBODY 0 /* null serial number */
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#define SOS_FIRST 1 /* first normal serial number */
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/* memory allocation */
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extern void *alloc_bytes(size_t size, const char *name);
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#define alloc_thing(thing, name) (alloc_bytes(sizeof(thing), (name)))
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extern void *clone_bytes(const void *orig, size_t size, const char *name);
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#define clone_thing(orig, name) clone_bytes((const void *)&(orig), sizeof(orig), (name))
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#define clone_str(str, name) \
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((str) == NULL? NULL : clone_bytes((str), strlen((str))+1, (name)))
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#ifdef LEAK_DETECTIVE
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extern void pfree(void *ptr);
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extern void report_leaks(void);
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#else
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# define pfree(ptr) free(ptr) /* ordinary stdc free */
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#endif
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#define pfreeany(p) { if ((p) != NULL) pfree(p); }
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#define replace(p, q) { pfreeany(p); (p) = (q); }
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/* chunk is a simple pointer-and-size abstraction */
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struct chunk {
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u_char *ptr;
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size_t len;
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};
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typedef struct chunk chunk_t;
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#define setchunk(ch, addr, size) { (ch).ptr = (addr); (ch).len = (size); }
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#define strchunk(str) { str, sizeof(str) }
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/* NOTE: freeanychunk, unlike pfreeany, NULLs .ptr */
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#define freeanychunk(ch) { pfreeany((ch).ptr); (ch).ptr = NULL; }
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#define clonetochunk(ch, addr, size, name) \
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{ (ch).ptr = clone_bytes((addr), (ch).len = (size), name); }
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#define clonereplacechunk(ch, addr, size, name) \
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{ pfreeany((ch).ptr); clonetochunk(ch, addr, size, name); }
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#define chunkcpy(dst, chunk) \
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{ memcpy(dst, chunk.ptr, chunk.len); dst += chunk.len;}
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#define same_chunk(a, b) \
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(a).len == (b).len && memcmp((a).ptr, (b).ptr, (b).len) == 0
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extern char* temporary_cyclic_buffer(void);
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extern const char* concatenate_paths(const char *a, const char *b);
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extern const chunk_t empty_chunk;
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/* compare two chunks */
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extern bool cmp_chunk(chunk_t a, chunk_t b);
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/* move a chunk to a memory position and free it after insertion */
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extern void mv_chunk(u_char **pos, chunk_t content);
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/* write the binary contents of a chunk_t to a file */
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extern bool write_chunk(const char *filename, const char *label, chunk_t ch
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,mode_t mask, bool force);
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/* display a date either in local or UTC time */
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extern char* timetoa(const time_t *time, bool utc);
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/* warns a predefined interval before expiry */
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extern const char* check_expiry(time_t expiration_date,
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int warning_interval, bool strict);
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#define MAX_PROMPT_PASS_TRIALS 5
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#define PROMPT_PASS_LEN 64
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/* struct used to prompt for a secret passphrase
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* from a console with file descriptor fd
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*/
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typedef struct {
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char secret[PROMPT_PASS_LEN+1];
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bool prompt;
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int fd;
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} prompt_pass_t;
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/* no time defined in time_t */
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#define UNDEFINED_TIME 0
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/* size of timetoa string buffer */
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#define TIMETOA_BUF 30
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/* filter eliminating the directory entries '.' and '..' */
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typedef struct dirent dirent_t;
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extern int file_select(const dirent_t *entry);
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/* cleanly exit Pluto */
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extern void exit_pluto(int /*status*/) NEVER_RETURNS;
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/* zero all bytes */
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#define zero(x) memset((x), '\0', sizeof(*(x)))
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/* are all bytes 0? */
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extern bool all_zero(const unsigned char *m, size_t len);
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/* pad_up(n, m) is the amount to add to n to make it a multiple of m */
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#define pad_up(n, m) (((m) - 1) - (((n) + (m) - 1) % (m)))
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#endif /* _DEFS_H */
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