mirror of https://gitee.com/openkylin/gnupg2.git
137 lines
3.5 KiB
C
137 lines
3.5 KiB
C
/* asshelp2.c - More helper functions for Assuan
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* Copyright (C) 2012 Free Software Foundation, Inc.
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*
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* This file is part of GnuPG.
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*
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* This file is free software; you can redistribute it and/or modify
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* it under the terms of either
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*
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* - the GNU Lesser General Public License as published by the Free
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* Software Foundation; either version 3 of the License, or (at
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* your option) any later version.
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*
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* or
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*
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* - the GNU General Public License as published by the Free
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* Software Foundation; either version 2 of the License, or (at
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* your option) any later version.
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*
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* or both in parallel, as here.
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*
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* This file is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see <https://www.gnu.org/licenses/>.
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*/
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#include <config.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#include <assuan.h>
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#include "util.h"
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#include "asshelp.h"
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/* Helper function to print an assuan status line using a printf
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format string. */
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gpg_error_t
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vprint_assuan_status (assuan_context_t ctx,
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const char *keyword,
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const char *format, va_list arg_ptr)
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{
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int rc;
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char *buf;
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rc = gpgrt_vasprintf (&buf, format, arg_ptr);
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if (rc < 0)
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return gpg_err_make (default_errsource, gpg_err_code_from_syserror ());
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rc = assuan_write_status (ctx, keyword, buf);
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xfree (buf);
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return rc;
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}
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/* Helper function to print an assuan status line using a printf
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format string. */
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gpg_error_t
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print_assuan_status (assuan_context_t ctx,
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const char *keyword,
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const char *format, ...)
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{
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va_list arg_ptr;
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gpg_error_t err;
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va_start (arg_ptr, format);
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err = vprint_assuan_status (ctx, keyword, format, arg_ptr);
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va_end (arg_ptr);
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return err;
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}
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/* Helper function to print a list of strings as an assuan status
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* line. KEYWORD is the first item on the status line. ARG_PTR is a
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* list of strings which are all separated by a space in the output.
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* The last argument must be a NULL. Linefeeds and carriage returns
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* characters (which are not allowed in an Assuan status line) are
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* silently quoted in C-style. */
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gpg_error_t
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vprint_assuan_status_strings (assuan_context_t ctx,
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const char *keyword, va_list arg_ptr)
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{
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gpg_error_t err = 0;
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const char *text;
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char buf[950], *p;
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size_t n;
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p = buf;
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n = 0;
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while ((text = va_arg (arg_ptr, const char *)) && n < DIM (buf)-3 )
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{
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if (n)
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{
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*p++ = ' ';
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n++;
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}
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for ( ; *text && n < DIM (buf)-3; n++, text++)
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{
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if (*text == '\n')
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{
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*p++ = '\\';
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*p++ = 'n';
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n++;
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}
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else if (*text == '\r')
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{
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*p++ = '\\';
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*p++ = 'r';
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n++;
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}
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else
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*p++ = *text;
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}
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}
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*p = 0;
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err = assuan_write_status (ctx, keyword, buf);
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return err;
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}
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/* See vprint_assuan_status_strings. */
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gpg_error_t
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print_assuan_status_strings (assuan_context_t ctx, const char *keyword, ...)
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{
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va_list arg_ptr;
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gpg_error_t err;
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va_start (arg_ptr, keyword);
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err = vprint_assuan_status_strings (ctx, keyword, arg_ptr);
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va_end (arg_ptr);
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return err;
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}
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