mirror of git://git.gnupg.org/gnupg.git
125 lines
3.2 KiB
C
125 lines
3.2 KiB
C
/* call-syshelp.c - Communication with g13-syshelp
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* Copyright (C) 2015 Werner Koch
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*
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* This file is part of GnuPG.
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*
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* GnuPG is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* GnuPG 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 <http://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 <time.h>
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#include <assert.h>
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#include <npth.h>
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#include "g13.h"
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#include <assuan.h>
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#include "i18n.h"
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#include "utils.h"
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/* Local data for this module. A pointer to this is stored in the
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CTRL object of each connection. */
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struct call_syshelp_s
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{
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assuan_context_t assctx; /* The Assuan context for the current
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g13-syshep connection. */
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};
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/* Fork off the syshelp tool if this has not already been done. */
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static gpg_error_t
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start_syshelp (ctrl_t ctrl)
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{
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gpg_error_t err;
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assuan_context_t ctx;
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assuan_fd_t no_close_list[3];
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int i;
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if (ctrl->syshelp_local->assctx)
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return 0; /* Already set. */
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if (opt.verbose)
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log_info ("starting a new syshelp\n");
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if (es_fflush (NULL))
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{
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err = gpg_error_from_syserror ();
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log_error ("error flushing pending output: %s\n", gpg_strerror (err));
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return err;
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}
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i = 0;
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if (log_get_fd () != -1)
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no_close_list[i++] = assuan_fd_from_posix_fd (log_get_fd ());
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no_close_list[i++] = assuan_fd_from_posix_fd (es_fileno (es_stderr));
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no_close_list[i] = ASSUAN_INVALID_FD;
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err = assuan_new (&ctx);
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if (err)
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{
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log_error ("can't allocate assuan context: %s\n", gpg_strerror (err));
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return err;
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}
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/* Call userv to start g13-syshelp. This userv script needs tpo be
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installed under the name "gnupg-g13-syshelp":
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if ( glob service-user root
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)
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reset
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suppress-args
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execute /home/wk/b/gnupg/g13/g13-syshelp -v
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else
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error Nothing to do for this service-user
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fi
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quit
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*/
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{
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const char *argv[3];
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argv[0] = "userv";
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argv[1] = "gnupg-g13-syshelp";
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argv[2] = NULL;
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err = assuan_pipe_connect (ctx, "/usr/bin/userv", argv,
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no_close_list, NULL, NULL, 0);
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}
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if (err)
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{
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log_error ("can't connect to '%s' - : %s\n",
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"g13-syshelp", gpg_strerror (err));
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log_info ("(is userv and its gnupg-g13-syshelp script installed?)\n");
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assuan_release (ctx);
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return err;
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}
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ctrl->syshelp_local->assctx = ctx;
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if (DBG_IPC)
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log_debug ("connection to g13-syshelp established\n");
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return 0;
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}
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/* Release local resources associated with CTRL. */
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void
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call_syshelp_release (ctrl_t ctrl)
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{
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assuan_release (ctrl->syshelp_local->assctx);
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ctrl->syshelp_local->assctx = NULL;
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}
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