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+/* util.h - Utility functions for GnuPG
+ * Copyright (C) 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
+ *
+ * This file is part of GnuPG.
+ *
+ * GnuPG 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.
+ *
+ * GnuPG 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+ * USA.
+ */
+
+#ifndef GNUPG_COMMON_UTIL_H
+#define GNUPG_COMMON_UTIL_H
+
+#include <gcrypt.h> /* We need this for the memory function protos. */
+#include <time.h>   /* We need time_t. */
+#include <gpg-error.h> /* we need gpg-error_t. */
+
+/* Common GNUlib includes (-I ../gl/). */
+#include "strpbrk.h"
+#include "strsep.h"
+#include "vasprintf.h"
+
+
+/* Hash function used with libksba. */
+#define HASH_FNC ((void (*)(void *, const void*,size_t))gcry_md_write)
+
+/* get all the stuff from jnlib */
+#include "../jnlib/logging.h"
+#include "../jnlib/argparse.h"
+#include "../jnlib/stringhelp.h"
+#include "../jnlib/mischelp.h"
+#include "../jnlib/strlist.h"
+#include "../jnlib/dotlock.h"
+#include "../jnlib/utf8conv.h"
+
+/* Handy malloc macros - please use only them. */
+#define xtrymalloc(a)    gcry_malloc ((a))
+#define xtrymalloc_secure(a)  gcry_malloc_secure ((a))
+#define xtrycalloc(a,b)  gcry_calloc ((a),(b))
+#define xtrycalloc_secure(a,b)  gcry_calloc_secure ((a),(b))
+#define xtryrealloc(a,b) gcry_realloc ((a),(b))
+#define xtrystrdup(a)    gcry_strdup ((a))
+#define xfree(a)         gcry_free ((a))
+
+#define xmalloc(a)       gcry_xmalloc ((a))
+#define xmalloc_secure(a)  gcry_xmalloc_secure ((a))
+#define xcalloc(a,b)     gcry_xcalloc ((a),(b))
+#define xcalloc_secure(a,b) gcry_xcalloc_secure ((a),(b))
+#define xrealloc(a,b)    gcry_xrealloc ((a),(b))
+#define xstrdup(a)       gcry_xstrdup ((a))
+
+/* For compatibility with gpg 1.4 we also define these: */
+#define xmalloc_clear(a) gcry_xcalloc (1, (a))
+#define xmalloc_secure_clear(a) gcry_xcalloc_secure (1, (a))
+
+
+/* A type to hold the ISO time.  Note that this this is the same as
+   the the KSBA type ksba_isotime_t. */
+typedef char gnupg_isotime_t[16];
+
+
+/*-- maperror.c --*/
+int map_kbx_err (int err);
+gpg_error_t map_assuan_err_with_source (int source, int err);
+int map_to_assuan_status (int rc);
+
+/*-- gettime.c --*/
+time_t gnupg_get_time (void);
+void   gnupg_get_isotime (gnupg_isotime_t timebuf);
+void   gnupg_set_time (time_t newtime, int freeze);
+int    gnupg_faked_time_p (void);
+u32    make_timestamp (void);
+u32    scan_isodatestr (const char *string);
+u32    add_days_to_timestamp (u32 stamp, u16 days);
+const char *strtimevalue (u32 stamp);
+const char *strtimestamp (u32 stamp); /* GMT */
+const char *isotimestamp (u32 stamp); /* GMT */
+const char *asctimestamp (u32 stamp); /* localized */
+
+
+/* Copy one iso ddate to another, this is inline so that we can do a
+   sanity check. */
+static inline void
+gnupg_copy_time (gnupg_isotime_t d, const gnupg_isotime_t s)
+{
+  if (*s && (strlen (s) != 15 || s[8] != 'T'))
+    BUG();
+  strcpy (d, s);
+}
+
+
+/*-- signal.c --*/
+void gnupg_init_signals (int mode, void (*fast_cleanup)(void));
+void gnupg_pause_on_sigusr (int which);
+void gnupg_block_all_signals (void);
+void gnupg_unblock_all_signals (void);
+
+/*-- yesno.c --*/
+int answer_is_yes (const char *s);
+int answer_is_yes_no_default (const char *s, int def_answer);
+int answer_is_yes_no_quit (const char *s);
+int answer_is_okay_cancel (const char *s, int def_answer);
+
+/*-- xreadline.c --*/
+ssize_t read_line (FILE *fp, 
+                   char **addr_of_buffer, size_t *length_of_buffer,
+                   size_t *max_length);
+
+
+/*-- b64enc.c --*/
+struct b64state 
+{ 
+  unsigned int flags;
+  int idx;
+  int quad_count;
+  FILE *fp;
+  char *title;
+  unsigned char radbuf[4];
+};
+gpg_error_t b64enc_start (struct b64state *state, FILE *fp, const char *title);
+gpg_error_t b64enc_write (struct b64state *state,
+                          const void *buffer, size_t nbytes);
+gpg_error_t b64enc_finish (struct b64state *state);
+
+/*-- sexputil.c */
+gpg_error_t keygrip_from_canon_sexp (const unsigned char *key, size_t keylen,
+                                     unsigned char *grip);
+int cmp_simple_canon_sexp (const unsigned char *a, const unsigned char *b);
+unsigned char *make_simple_sexp_from_hexstr (const char *line,
+                                             size_t *nscanned);
+
+/*-- homedir.c --*/
+const char *default_homedir (void);
+
+
+/*-- miscellaneous.c --*/
+
+/* Same as asprintf but return an allocated buffer suitable to be
+   freed using xfree.  This function simply dies on memory failure,
+   thus no extra check is required. */
+char *xasprintf (const char *fmt, ...) JNLIB_GCC_A_PRINTF(1,2);
+/* Same as asprintf but return an allocated buffer suitable to be
+   freed using xfree.  This function returns NULL on memory failure and
+   sets errno. */
+char *xtryasprintf (const char *fmt, ...) JNLIB_GCC_A_PRINTF(1,2);
+
+const char *print_fname_stdout (const char *s);
+const char *print_fname_stdin (const char *s);
+void print_string (FILE *fp, const byte *p, size_t n, int delim);
+void print_utf8_string2 ( FILE *fp, const byte *p, size_t n, int delim);
+void print_utf8_string (FILE *fp, const byte *p, size_t n);
+char *make_printable_string (const void *p, size_t n, int delim);
+
+int is_file_compressed (const char *s, int *ret_rc);
+
+int match_multistr (const char *multistr,const char *match);
+
+
+/*-- Simple replacement functions. */
+#ifndef HAVE_TTYNAME
+/* Systems without ttyname (W32) will merely return NULL. */
+static inline char *
+ttyname (int fd) 
+{
+  return NULL
+};
+#endif /* !HAVE_TTYNAME */
+
+#ifndef HAVE_ISASCII
+static inline int 
+isascii (int c)
+{
+  return (((c) & ~0x7f) == 0);
+}
+#endif /* !HAVE_ISASCII */
+
+/*-- Macros to replace ctype ones to avoid locale problems. --*/
+#define spacep(p)   (*(p) == ' ' || *(p) == '\t')
+#define digitp(p)   (*(p) >= '0' && *(p) <= '9')
+#define hexdigitp(a) (digitp (a)                     \
+                      || (*(a) >= 'A' && *(a) <= 'F')  \
+                      || (*(a) >= 'a' && *(a) <= 'f'))
+  /* Note this isn't identical to a C locale isspace() without \f and
+     \v, but works for the purposes used here. */
+#define ascii_isspace(a) ((a)==' ' || (a)=='\n' || (a)=='\r' || (a)=='\t')
+
+/* The atoi macros assume that the buffer has only valid digits. */
+#define atoi_1(p)   (*(p) - '0' )
+#define atoi_2(p)   ((atoi_1(p) * 10) + atoi_1((p)+1))
+#define atoi_4(p)   ((atoi_2(p) * 100) + atoi_2((p)+2))
+#define xtoi_1(p)   (*(p) <= '9'? (*(p)- '0'): \
+                     *(p) <= 'F'? (*(p)-'A'+10):(*(p)-'a'+10))
+#define xtoi_2(p)   ((xtoi_1(p) * 16) + xtoi_1((p)+1))
+#define xtoi_4(p)   ((xtoi_2(p) * 256) + xtoi_2((p)+2))
+
+
+
+#endif /*GNUPG_COMMON_UTIL_H*/