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