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call-dirmngr.c
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call-dirmngr.c
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/* call-dirmngr.c - Interact with the Dirmngr.
* Copyright (C) 2016 g10 Code GmbH
* Copyright (C) 2016 Bundesamt für Sicherheit in der Informationstechnik
*
* This file is part of GnuPG.
*
* This file 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.
*
* This file 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, see <https://www.gnu.org/licenses/>.
*/
#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <unistd.h>
#include <time.h>
#ifdef HAVE_LOCALE_H
# include <locale.h>
#endif
#include <assuan.h>
#include "../common/util.h"
#include "../common/i18n.h"
#include "../common/asshelp.h"
#include "../common/mbox-util.h"
#include "./call-dirmngr.h"
static struct
{
int verbose;
int debug_ipc;
int autostart;
} opt;
void
set_dirmngr_options (int verbose, int debug_ipc, int autostart)
{
opt.verbose = verbose;
opt.debug_ipc = debug_ipc;
opt.autostart = autostart;
}
/* Connect to the Dirmngr and return an assuan context. */
static gpg_error_t
connect_dirmngr (assuan_context_t *r_ctx)
{
gpg_error_t err;
assuan_context_t ctx;
*r_ctx = NULL;
err = start_new_dirmngr (&ctx,
GPG_ERR_SOURCE_DEFAULT,
NULL,
opt.autostart, opt.verbose, opt.debug_ipc,
NULL, NULL);
if (!opt.autostart && gpg_err_code (err) == GPG_ERR_NO_DIRMNGR)
{
static int shown;
if (!shown)
{
shown = 1;
log_info (_("no dirmngr running in this session\n"));
}
}
if (err)
assuan_release (ctx);
else
{
*r_ctx = ctx;
}
return err;
}
/* Parameter structure used with the WKD_GET command. */
struct wkd_get_parm_s
{
estream_t memfp;
};
/* Data callback for the WKD_GET command. */
static gpg_error_t
wkd_get_data_cb (void *opaque, const void *data, size_t datalen)
{
struct wkd_get_parm_s *parm = opaque;
gpg_error_t err = 0;
size_t nwritten;
if (!data)
return 0; /* Ignore END commands. */
if (!parm->memfp)
return 0; /* Data is not required. */
if (es_write (parm->memfp, data, datalen, &nwritten))
err = gpg_error_from_syserror ();
return err;
}
/* Status callback for the WKD_GET command. */
static gpg_error_t
wkd_get_status_cb (void *opaque, const char *line)
{
struct wkd_get_parm_s *parm = opaque;
gpg_error_t err = 0;
(void)line;
(void)parm;
return err;
}
/* Ask the dirmngr for the submission address of a WKD server for the
* mail address ADDRSPEC. On success the submission address is stored
* at R_ADDRSPEC. */
gpg_error_t
wkd_get_submission_address (const char *addrspec, char **r_addrspec)
{
gpg_error_t err;
assuan_context_t ctx;
struct wkd_get_parm_s parm;
char *line = NULL;
void *vp;
char *buffer = NULL;
char *p;
memset (&parm, 0, sizeof parm);
*r_addrspec = NULL;
err = connect_dirmngr (&ctx);
if (err)
return err;
line = es_bsprintf ("WKD_GET --submission-address -- %s", addrspec);
if (!line)
{
err = gpg_error_from_syserror ();
goto leave;
}
if (strlen (line) + 2 >= ASSUAN_LINELENGTH)
{
err = gpg_error (GPG_ERR_TOO_LARGE);
goto leave;
}
parm.memfp = es_fopenmem (0, "rwb");
if (!parm.memfp)
{
err = gpg_error_from_syserror ();
goto leave;
}
err = assuan_transact (ctx, line, wkd_get_data_cb, &parm,
NULL, NULL, wkd_get_status_cb, &parm);
if (err)
goto leave;
es_fputc (0, parm.memfp);
if (es_fclose_snatch (parm.memfp, &vp, NULL))
{
err = gpg_error_from_syserror ();
goto leave;
}
buffer = vp;
parm.memfp = NULL;
p = strchr (buffer, '\n');
if (p)
*p = 0;
trim_spaces (buffer);
if (!is_valid_mailbox (buffer))
{
err = gpg_error (GPG_ERR_INV_USER_ID);
goto leave;
}
*r_addrspec = xtrystrdup (buffer);
if (!*r_addrspec)
err = gpg_error_from_syserror ();
leave:
es_free (buffer);
es_fclose (parm.memfp);
xfree (line);
assuan_release (ctx);
return err;
}
/* Ask the dirmngr for the policy flags and return them as an estream
* memory stream. If no policy flags are set, NULL is stored at
* R_BUFFER. */
gpg_error_t
wkd_get_policy_flags (const char *addrspec, estream_t *r_buffer)
{
gpg_error_t err;
assuan_context_t ctx;
struct wkd_get_parm_s parm;
char *line = NULL;
char *buffer = NULL;
memset (&parm, 0, sizeof parm);
*r_buffer = NULL;
err = connect_dirmngr (&ctx);
if (err)
return err;
line = es_bsprintf ("WKD_GET --policy-flags -- %s", addrspec);
if (!line)
{
err = gpg_error_from_syserror ();
goto leave;
}
if (strlen (line) + 2 >= ASSUAN_LINELENGTH)
{
err = gpg_error (GPG_ERR_TOO_LARGE);
goto leave;
}
parm.memfp = es_fopenmem (0, "rwb");
if (!parm.memfp)
{
err = gpg_error_from_syserror ();
goto leave;
}
err = assuan_transact (ctx, line, wkd_get_data_cb, &parm,
NULL, NULL, wkd_get_status_cb, &parm);
if (err)
goto leave;
es_rewind (parm.memfp);
*r_buffer = parm.memfp;
parm.memfp = 0;
leave:
es_free (buffer);
es_fclose (parm.memfp);
xfree (line);
assuan_release (ctx);
return err;
}
/* Ask the dirmngr for the key for ADDRSPEC. On success a stream with
* the key is stored at R_KEY. */
gpg_error_t
wkd_get_key (const char *addrspec, estream_t *r_key)
{
gpg_error_t err;
assuan_context_t ctx;
struct wkd_get_parm_s parm;
char *line = NULL;
memset (&parm, 0, sizeof parm);
*r_key = NULL;
err = connect_dirmngr (&ctx);
if (err)
return err;
line = es_bsprintf ("WKD_GET -- %s", addrspec);
if (!line)
{
err = gpg_error_from_syserror ();
goto leave;
}
if (strlen (line) + 2 >= ASSUAN_LINELENGTH)
{
err = gpg_error (GPG_ERR_TOO_LARGE);
goto leave;
}
parm.memfp = es_fopenmem (0, "rwb");
if (!parm.memfp)
{
err = gpg_error_from_syserror ();
goto leave;
}
err = assuan_transact (ctx, line, wkd_get_data_cb, &parm,
NULL, NULL, wkd_get_status_cb, &parm);
if (err)
goto leave;
es_rewind (parm.memfp);
*r_key = parm.memfp;
parm.memfp = NULL;
leave:
es_fclose (parm.memfp);
xfree (line);
assuan_release (ctx);
return err;
}

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text/x-c
Expires
Thu, Feb 26, 6:59 PM (19 h, 8 m)
Storage Engine
local-disk
Storage Format
Raw Data
Storage Handle
ce/14/5687b76b3556377f1daa8c322b2e

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