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170 lines
3.3 KiB
C
170 lines
3.3 KiB
C
/* assuan-util.c - Utility functions for Assuan
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* Copyright (C) 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
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* Copyright (C) 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 License
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* along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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/* Please note that this is a stripped down and modified version of
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the orginal Assuan code from libassuan. */
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#include <config.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <ctype.h>
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#include "assuan-defs.h"
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/* Store the error in the context so that the error sending function
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can take out a descriptive text. Inside the assuan code, use the
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macro set_error instead of this function. */
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int
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assuan_set_error (assuan_context_t ctx, int err, const char *text)
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{
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ctx->err_no = err;
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ctx->err_str = text;
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return err;
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}
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void
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assuan_set_pointer (assuan_context_t ctx, void *pointer)
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{
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if (ctx)
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ctx->user_pointer = pointer;
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}
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void *
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assuan_get_pointer (assuan_context_t ctx)
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{
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return ctx? ctx->user_pointer : NULL;
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}
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void
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assuan_set_log_stream (assuan_context_t ctx, FILE *fp)
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{
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if (ctx)
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{
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if (ctx->log_fp)
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fflush (ctx->log_fp);
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ctx->log_fp = fp;
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_assuan_set_default_log_stream (fp);
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}
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}
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void
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assuan_begin_confidential (assuan_context_t ctx)
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{
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if (ctx)
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{
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ctx->confidential = 1;
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}
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}
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void
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assuan_end_confidential (assuan_context_t ctx)
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{
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if (ctx)
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{
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ctx->confidential = 0;
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}
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}
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/* Dump a possibly binary string (used for debugging). Distinguish
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ascii text from binary and print it accordingly. */
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void
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_assuan_log_print_buffer (FILE *fp, const void *buffer, size_t length)
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{
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const unsigned char *s;
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int n;
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for (n=length,s=buffer; n; n--, s++)
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if ((!isascii (*s) || iscntrl (*s) || !isprint (*s)) && !(*s >= 0x80))
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break;
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s = buffer;
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if (!n && *s != '[')
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fwrite (buffer, length, 1, fp);
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else
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{
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putc ('[', fp);
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for (n=0; n < length; n++, s++)
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fprintf (fp, " %02x", *s);
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putc (' ', fp);
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putc (']', fp);
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}
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}
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/* Log a user-supplied string. Escapes non-printable before
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printing. */
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void
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_assuan_log_sanitized_string (const char *string)
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{
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const unsigned char *s = string;
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FILE *fp = assuan_get_assuan_log_stream ();
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if (! *s)
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return;
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for (; *s; s++)
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{
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int c = 0;
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switch (*s)
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{
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case '\r':
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c = 'r';
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break;
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case '\n':
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c = 'n';
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break;
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case '\f':
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c = 'f';
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break;
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case '\v':
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c = 'v';
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break;
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case '\b':
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c = 'b';
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break;
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default:
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if ((isascii (*s) && isprint (*s)) || (*s >= 0x80))
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putc (*s, fp);
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else
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{
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putc ('\\', fp);
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fprintf (fp, "x%02x", *s);
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}
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}
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if (c)
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{
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putc ('\\', fp);
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putc (c, fp);
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}
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}
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}
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