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assuan-util.c
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/* assuan-util.c - Utility functions for Assuan
* Copyright (C) 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
*
* This file is part of Assuan.
*
* Assuan is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* Assuan 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 Lesser 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.
*/
#include <config.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include <errno.h>
#include "assuan-defs.h"
static void *(*alloc_func)(size_t n) = malloc;
static void *(*realloc_func)(void *p, size_t n) = realloc;
static void (*free_func)(void*) = free;
void
assuan_set_malloc_hooks ( void *(*new_alloc_func)(size_t n),
void *(*new_realloc_func)(void *p, size_t n),
void (*new_free_func)(void*) )
{
alloc_func = new_alloc_func;
realloc_func = new_realloc_func;
free_func = new_free_func;
}
void *
_assuan_malloc (size_t n)
{
return alloc_func (n);
}
void *
_assuan_realloc (void *a, size_t n)
{
return realloc_func (a, n);
}
void *
_assuan_calloc (size_t n, size_t m)
{
void *p;
size_t nbytes;
nbytes = n * m;
if (m && nbytes / m != n)
{
errno = ENOMEM;
return NULL;
}
p = _assuan_malloc (nbytes);
if (p)
memset (p, 0, nbytes);
return p;
}
void
_assuan_free (void *p)
{
if (p)
free_func (p);
}
/* Store the error in the context so that the error sending function
can take out a descriptive text. Inside the assuan code, use the
macro set_error instead of this function. */
int
assuan_set_error (assuan_context_t ctx, int err, const char *text)
{
ctx->err_no = err;
ctx->err_str = text;
return err;
}
void
assuan_set_pointer (assuan_context_t ctx, void *pointer)
{
if (ctx)
ctx->user_pointer = pointer;
}
void *
assuan_get_pointer (assuan_context_t ctx)
{
return ctx? ctx->user_pointer : NULL;
}
void
assuan_begin_confidential (assuan_context_t ctx)
{
if (ctx)
{
ctx->confidential = 1;
}
}
void
assuan_end_confidential (assuan_context_t ctx)
{
if (ctx)
{
ctx->confidential = 0;
}
}
void
assuan_set_io_monitor (assuan_context_t ctx,
unsigned int (*monitor)(assuan_context_t ctx,
int direction,
const char *line,
size_t linelen))
{
if (ctx)
{
ctx->io_monitor = monitor;
}
}
/* 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)
{
if (!ctx)
return;
switch (flag)
{
case ASSUAN_NO_WAITPID: ctx->flags.no_waitpid = value; break;
}
}
/* Return the VALUE of FLAG in context CTX. */
int
assuan_get_flag (assuan_context_t ctx, assuan_flag_t flag)
{
if (!ctx)
return 0;
switch (flag)
{
case ASSUAN_NO_WAITPID: return ctx->flags.no_waitpid;
}
return 0;
}

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