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assuan-util.c
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/* assuan-util.c - Utility functions for Assuan
* Copyright (C) 2001 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
#include <config.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "assuan-defs.h"
#ifdef HAVE_JNLIB_LOGGING
#include "../jnlib/logging.h"
#endif
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 = _assuan_malloc (n*m);
if (p)
memset (p, 0, n* m);
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 ctx, int err, const char *text)
{
ctx->err_no = err;
ctx->err_str = text;
return err;
}
void
assuan_set_pointer (ASSUAN_CONTEXT ctx, void *pointer)
{
if (ctx)
ctx->user_pointer = pointer;
}
void *
assuan_get_pointer (ASSUAN_CONTEXT ctx)
{
return ctx? ctx->user_pointer : NULL;
}
void
assuan_set_log_stream (ASSUAN_CONTEXT ctx, FILE *fp)
{
if (ctx)
{
if (ctx->log_fp)
fflush (ctx->log_fp);
ctx->log_fp = fp;
}
}
void
assuan_begin_confidential (ASSUAN_CONTEXT ctx)
{
if (ctx)
{
ctx->confidential = 1;
}
}
void
assuan_end_confidential (ASSUAN_CONTEXT ctx)
{
if (ctx)
{
ctx->confidential = 0;
}
}
void
_assuan_log_print_buffer (FILE *fp, const void *buffer, size_t length)
{
const unsigned char *s;
int n;
for (n=length,s=buffer; n; n--, s++)
{
if (*s < ' ' || (*s >= 0x7f && *s <= 0xa0))
break;
}
s = buffer;
if (!n && *s != '[')
fwrite (buffer, length, 1, fp);
else
{
putc ('[', fp);
for (n=0; n < length; n++, s++)
fprintf (fp, " %02x", *s);
putc (' ', fp);
putc (']', fp);
}
}
/* print a user supplied string after filtering out potential bad
characters*/
void
_assuan_log_sanitized_string (const char *string)
{
const unsigned char *s = (const unsigned char*)string;
#ifdef HAVE_JNLIB_LOGGING
FILE *fp = log_get_stream ();
#else
FILE *fp = stderr;
#endif
for (; *s; s++)
{
if (*s < 0x20 || (*s >= 0x7f && *s <= 0xa0))
{
putc ('\\', fp);
if (*s == '\n')
putc ('n', fp);
else if (*s == '\r')
putc ('r', fp);
else if (*s == '\f')
putc ('f', fp);
else if (*s == '\v')
putc ('v', fp);
else if (*s == '\b')
putc ('b', fp);
else if (!*s)
putc ('0', fp);
else
fprintf (fp, "x%02x", *s );
}
else
putc (*s, fp);
}
}

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