280 lines
6.6 KiB
C
280 lines
6.6 KiB
C
/* trustlist.c - Trust item listing.
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* Copyright (C) 2000 Werner Koch (dd9jn)
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* Copyright (C) 2001, 2002, 2003, 2004 g10 Code GmbH
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*
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* This file is part of GPGME.
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*
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* GPGME is free software; you can redistribute it and/or modify it
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* under the terms of the GNU Lesser General Public License as
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* published by the Free Software Foundation; either version 2.1 of
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* the License, or (at your option) any later version.
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*
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* GPGME is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this program; if not, see <https://gnu.org/licenses/>.
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* SPDX-License-Identifier: LGPL-2.1-or-later
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*/
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#if HAVE_CONFIG_H
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#include <config.h>
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#endif
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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 <errno.h>
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#include "gpgme.h"
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#include "debug.h"
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#include "util.h"
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#include "context.h"
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#include "ops.h"
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struct trust_queue_item_s
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{
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struct trust_queue_item_s *next;
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gpgme_trust_item_t item;
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};
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typedef struct
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{
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/* Something new is available. */
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int trust_cond;
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struct trust_queue_item_s *trust_queue;
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} *op_data_t;
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static gpgme_error_t
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trustlist_status_handler (void *priv, gpgme_status_code_t code, char *args)
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{
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(void)priv;
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(void)code;
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(void)args;
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return 0;
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}
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/* This handler is used to parse the output of --list-trust-path:
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Format:
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level:keyid:type:recno:ot:val:mc:cc:name:
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With TYPE = U for a user ID
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K for a key
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The RECNO is either the one of the dir record or the one of the uid
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record. OT is the the usual trust letter and only available on K
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lines. VAL is the calculated validity MC is the marginal trust
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counter and only available on U lines CC is the same for the
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complete count NAME ist the username and only printed on U
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lines. */
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static gpgme_error_t
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trustlist_colon_handler (void *priv, char *line)
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{
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gpgme_ctx_t ctx = (gpgme_ctx_t) priv;
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gpgme_error_t err;
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char *p, *pend;
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int field = 0;
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gpgme_trust_item_t item = NULL;
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if (!line)
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return 0; /* EOF */
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for (p = line; p; p = pend)
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{
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field++;
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pend = strchr (p, ':');
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if (pend)
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*pend++ = 0;
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switch (field)
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{
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case 1: /* level */
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err = _gpgme_trust_item_new (&item);
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if (err)
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return err;
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item->level = atoi (p);
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break;
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case 2: /* long keyid */
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if (strlen (p) == DIM(item->keyid) - 1)
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strcpy (item->keyid, p);
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break;
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case 3: /* type */
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item->type = *p == 'K'? 1 : *p == 'U'? 2 : 0;
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break;
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case 5: /* owner trust */
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item->_owner_trust[0] = *p;
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break;
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case 6: /* validity */
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item->_validity[0] = *p;
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break;
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case 9: /* user ID */
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item->name = strdup (p);
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if (!item->name)
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{
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int saved_err = gpg_error_from_syserror ();
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gpgme_trust_item_unref (item);
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return saved_err;
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}
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break;
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}
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}
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if (item)
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_gpgme_engine_io_event (ctx->engine, GPGME_EVENT_NEXT_TRUSTITEM, item);
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return 0;
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}
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void
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_gpgme_op_trustlist_event_cb (void *data, gpgme_event_io_t type,
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void *type_data)
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{
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gpgme_ctx_t ctx = (gpgme_ctx_t) data;
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gpgme_error_t err;
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void *hook;
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op_data_t opd;
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gpgme_trust_item_t item = (gpgme_trust_item_t) type_data;
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struct trust_queue_item_s *q, *q2;
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assert (type == GPGME_EVENT_NEXT_TRUSTITEM);
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err = _gpgme_op_data_lookup (ctx, OPDATA_TRUSTLIST, &hook, -1, NULL);
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opd = hook;
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if (err)
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return;
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q = malloc (sizeof *q);
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if (!q)
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{
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gpgme_trust_item_unref (item);
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/* FIXME: GPGME_Out_Of_Core; */
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return;
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}
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q->item = item;
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q->next = NULL;
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/* FIXME: Use a tail pointer */
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q2 = opd->trust_queue;
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if (!q2)
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opd->trust_queue = q;
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else
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{
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while (q2->next)
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q2 = q2->next;
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q2->next = q;
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}
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/* FIXME: unlock queue */
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opd->trust_cond = 1;
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}
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gpgme_error_t
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gpgme_op_trustlist_start (gpgme_ctx_t ctx, const char *pattern, int max_level)
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{
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gpgme_error_t err = 0;
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void *hook;
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op_data_t opd;
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TRACE_BEG (DEBUG_CTX, "gpgme_op_trustlist_start", ctx,
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"pattern=%s, max_level=%i", pattern, max_level);
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if (!ctx || !pattern || !*pattern)
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return TRACE_ERR (gpg_error (GPG_ERR_INV_VALUE));
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err = _gpgme_op_reset (ctx, 2);
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if (err)
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return TRACE_ERR (err);
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err = _gpgme_op_data_lookup (ctx, OPDATA_TRUSTLIST, &hook,
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sizeof (*opd), NULL);
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opd = hook;
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if (err)
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return TRACE_ERR (err);
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_gpgme_engine_set_status_handler (ctx->engine,
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trustlist_status_handler, ctx);
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err = _gpgme_engine_set_colon_line_handler (ctx->engine,
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trustlist_colon_handler, ctx);
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if (err)
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return TRACE_ERR (err);
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err = _gpgme_engine_op_trustlist (ctx->engine, pattern);
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return TRACE_ERR (err);
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}
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gpgme_error_t
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gpgme_op_trustlist_next (gpgme_ctx_t ctx, gpgme_trust_item_t *r_item)
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{
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gpgme_error_t err;
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void *hook;
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op_data_t opd;
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struct trust_queue_item_s *q;
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TRACE_BEG (DEBUG_CTX, "gpgme_op_trustlist_next", ctx, "");
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if (!ctx || !r_item)
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return TRACE_ERR (gpg_error (GPG_ERR_INV_VALUE));
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*r_item = NULL;
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if (!ctx)
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return TRACE_ERR (gpg_error (GPG_ERR_INV_VALUE));
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err = _gpgme_op_data_lookup (ctx, OPDATA_TRUSTLIST, &hook, -1, NULL);
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opd = hook;
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if (err)
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return TRACE_ERR (err);
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if (opd == NULL)
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return TRACE_ERR (gpg_error (GPG_ERR_INV_VALUE));
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if (!opd->trust_queue)
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{
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err = _gpgme_wait_on_condition (ctx, &opd->trust_cond, NULL);
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if (err)
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return TRACE_ERR (err);
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if (!opd->trust_cond)
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return TRACE_ERR (gpg_error (GPG_ERR_EOF));
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opd->trust_cond = 0;
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assert (opd->trust_queue);
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}
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q = opd->trust_queue;
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opd->trust_queue = q->next;
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*r_item = q->item;
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free (q);
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if ((*r_item)->type == 1)
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{
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TRACE_SUC ("trust_item=%p: %s: owner trust %s with level %i "
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"and validity %s", *r_item, (*r_item)->keyid,
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(*r_item)->owner_trust, (*r_item)->level,
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(*r_item)->validity);
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}
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else if ((*r_item)->type == 2)
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{
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TRACE_SUC ("trust_item=%p: %s: UID %s with level %i "
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"and validity %s", *r_item, (*r_item)->keyid,
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(*r_item)->name, (*r_item)->level, (*r_item)->validity);
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}
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else
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{
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TRACE_SUC ("trust_item=%p: %s: unknown type %i with level %i "
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"and validity %s", *r_item, (*r_item)->keyid,
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(*r_item)->type, (*r_item)->level, (*r_item)->validity);
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}
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return 0;
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}
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/* Terminate a pending trustlist operation within CTX. */
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gpgme_error_t
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gpgme_op_trustlist_end (gpgme_ctx_t ctx)
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{
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TRACE (DEBUG_CTX, "gpgme_op_trustlist_end", ctx, "");
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if (!ctx)
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return gpg_error (GPG_ERR_INV_VALUE);
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return 0;
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}
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