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/* ks-engine-finger.c - Finger OpenPGP key access
* Copyright (C) 2011 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 3 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, see <https://www.gnu.org/licenses/>.
*/
#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include "dirmngr.h"
#include "misc.h"
#include "../common/userids.h"
#include "ks-engine.h"
/* Print a help output for the schemata supported by this module. */
gpg_error_t
ks_finger_help (ctrl_t ctrl, parsed_uri_t uri)
{
char const data[] =
"Handler for FINGER:\n"
" finger:<user>@<host>\n"
"Supported methods: fetch\n"
"Example:\n"
" finger:joe@example.org\n";
gpg_error_t err;
if (!uri)
err = ks_print_help (ctrl, " finger");
else if (!strcmp (uri->scheme, "finger"))
err = ks_print_help (ctrl, data);
else
err = 0;
return err;
}
/* Get the key from URI which is expected to specify a finger scheme.
On success R_FP has an open stream to read the data. */
gpg_error_t
ks_finger_fetch (ctrl_t ctrl, parsed_uri_t uri, estream_t *r_fp)
{
gpg_error_t err;
estream_t fp;
char *server;
char *name;
http_t http;
(void)ctrl;
*r_fp = NULL;
if (strcmp (uri->scheme, "finger") || !uri->opaque || !uri->path)
return gpg_error (GPG_ERR_INV_ARG);
name = xtrystrdup (uri->path);
if (!name)
return gpg_error_from_syserror ();
server = strchr (name, '@');
if (!server)
{
err = gpg_error (GPG_ERR_INV_URI);
xfree (name);
return err;
}
*server++ = 0;
err = http_raw_connect (&http, server, 79,
((dirmngr_use_tor ()? HTTP_FLAG_FORCE_TOR : 0)
| (opt.disable_ipv4? HTTP_FLAG_IGNORE_IPv4 : 0)
| (opt.disable_ipv6? HTTP_FLAG_IGNORE_IPv6 : 0)),
NULL, ctrl->timeout);
if (err)
{
xfree (name);
return err;
}
fp = http_get_write_ptr (http);
if (!fp)
{
err = gpg_error (GPG_ERR_INTERNAL);
http_close (http, 0);
xfree (name);
return err;
}
if (es_fputs (name, fp) || es_fputs ("\r\n", fp) || es_fflush (fp))
{
err = gpg_error_from_syserror ();
http_close (http, 0);
xfree (name);
return err;
}
xfree (name);
es_fclose (fp);
fp = http_get_read_ptr (http);
if (!fp)
{
err = gpg_error (GPG_ERR_INTERNAL);
http_close (http, 0);
return err;
}
http_close (http, 1 /* Keep read ptr. */);
*r_fp = fp;
return 0;
}
|
