Line data Source code
1 : /*
2 : qgpgmelistallkeysjob.cpp
3 :
4 : This file is part of qgpgme, the Qt API binding for gpgme
5 : Copyright (c) 2004,2008 Klarälvdalens Datakonsult AB
6 : Copyright (c) 2016 by Bundesamt für Sicherheit in der Informationstechnik
7 : Software engineering by Intevation GmbH
8 :
9 : QGpgME is free software; you can redistribute it and/or
10 : modify it under the terms of the GNU General Public License as
11 : published by the Free Software Foundation; either version 2 of the
12 : License, or (at your option) any later version.
13 :
14 : QGpgME is distributed in the hope that it will be useful,
15 : but WITHOUT ANY WARRANTY; without even the implied warranty of
16 : MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 : General Public License for more details.
18 :
19 : You should have received a copy of the GNU General Public License
20 : along with this program; if not, write to the Free Software
21 : Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22 :
23 : In addition, as a special exception, the copyright holders give
24 : permission to link the code of this program with any edition of
25 : the Qt library by Trolltech AS, Norway (or with modified versions
26 : of Qt that use the same license as Qt), and distribute linked
27 : combinations including the two. You must obey the GNU General
28 : Public License in all respects for all of the code used other than
29 : Qt. If you modify this file, you may extend this exception to
30 : your version of the file, but you are not obligated to do so. If
31 : you do not wish to do so, delete this exception statement from
32 : your version.
33 : */
34 :
35 : #ifdef HAVE_CONFIG_H
36 : #include "config.h"
37 : #endif
38 :
39 : #include "qgpgmelistallkeysjob.h"
40 :
41 : #include "key.h"
42 : #include "context.h"
43 : #include "keylistresult.h"
44 : #include <gpg-error.h>
45 :
46 : #include <algorithm>
47 :
48 : #include <cstdlib>
49 : #include <cstring>
50 : #include <cassert>
51 :
52 : using namespace QGpgME;
53 : using namespace GpgME;
54 :
55 0 : QGpgMEListAllKeysJob::QGpgMEListAllKeysJob(Context *context)
56 : : mixin_type(context),
57 0 : mResult()
58 : {
59 0 : lateInitialization();
60 0 : }
61 :
62 0 : QGpgMEListAllKeysJob::~QGpgMEListAllKeysJob() {}
63 :
64 0 : static KeyListResult do_list_keys(Context *ctx, std::vector<Key> &keys, bool secretOnly)
65 : {
66 :
67 0 : const char **pat = 0;
68 0 : if (const Error err = ctx->startKeyListing(pat, secretOnly)) {
69 0 : return KeyListResult(0, err);
70 : }
71 :
72 0 : Error err;
73 0 : do {
74 0 : keys.push_back(ctx->nextKey(err));
75 0 : } while (!err);
76 :
77 0 : keys.pop_back();
78 :
79 0 : const KeyListResult result = ctx->endKeyListing();
80 0 : ctx->cancelPendingOperation();
81 0 : return result;
82 : }
83 :
84 : namespace
85 : {
86 :
87 : template <typename ForwardIterator, typename BinaryPredicate>
88 0 : ForwardIterator unique_by_merge(ForwardIterator first, ForwardIterator last, BinaryPredicate pred)
89 : {
90 0 : first = std::adjacent_find(first, last, pred);
91 0 : if (first == last) {
92 0 : return last;
93 : }
94 :
95 0 : ForwardIterator dest = first;
96 0 : dest->mergeWith(*++first);
97 0 : while (++first != last)
98 0 : if (pred(*dest, *first)) {
99 0 : dest->mergeWith(*first);
100 : } else {
101 0 : *++dest = *first;
102 : }
103 0 : return ++dest;
104 : }
105 :
106 : }
107 :
108 0 : static void merge_keys(std::vector<Key> &merged, std::vector<Key> &pub, std::vector<Key> &sec)
109 : {
110 0 : merged.reserve(pub.size() + sec.size());
111 :
112 : std::merge(pub.begin(), pub.end(),
113 : sec.begin(), sec.end(),
114 : std::back_inserter(merged),
115 0 : ByFingerprint<std::less>());
116 :
117 0 : merged.erase(unique_by_merge(merged.begin(), merged.end(), ByFingerprint<std::equal_to>()),
118 0 : merged.end());
119 0 : }
120 :
121 0 : static QGpgMEListAllKeysJob::result_type list_keys(Context *ctx, bool mergeKeys)
122 : {
123 0 : std::vector<Key> pub, sec, merged;
124 0 : KeyListResult r;
125 :
126 0 : r.mergeWith(do_list_keys(ctx, pub, false));
127 0 : std::sort(pub.begin(), pub.end(), ByFingerprint<std::less>());
128 :
129 0 : r.mergeWith(do_list_keys(ctx, sec, true));
130 0 : std::sort(sec.begin(), sec.end(), ByFingerprint<std::less>());
131 :
132 0 : if (mergeKeys) {
133 0 : merge_keys(merged, pub, sec);
134 : } else {
135 0 : merged.swap(pub);
136 : }
137 0 : return std::make_tuple(r, merged, sec, QString(), Error());
138 : }
139 :
140 0 : Error QGpgMEListAllKeysJob::start(bool mergeKeys)
141 : {
142 0 : run(std::bind(&list_keys, std::placeholders::_1, mergeKeys));
143 0 : return Error();
144 : }
145 :
146 0 : KeyListResult QGpgMEListAllKeysJob::exec(std::vector<Key> &pub, std::vector<Key> &sec, bool mergeKeys)
147 : {
148 0 : const result_type r = list_keys(context(), mergeKeys);
149 0 : resultHook(r);
150 0 : pub = std::get<1>(r);
151 0 : sec = std::get<2>(r);
152 0 : return std::get<0>(r);
153 : }
154 :
155 0 : void QGpgMEListAllKeysJob::resultHook(const result_type &tuple)
156 : {
157 0 : mResult = std::get<0>(tuple);
158 0 : }
159 :
160 : #if 0
161 : void QGpgMEListAllKeysJob::showErrorDialog(QWidget *parent, const QString &caption) const
162 : {
163 : if (!mResult.error() || mResult.error().isCanceled()) {
164 : return;
165 : }
166 : const QString msg = i18n("<qt><p>An error occurred while fetching "
167 : "the keys from the backend:</p>"
168 : "<p><b>%1</b></p></qt>",
169 : QString::fromLocal8Bit(mResult.error().asString()));
170 : KMessageBox::error(parent, msg, caption);
171 : }
172 : #endif
173 : #include "qgpgmelistallkeysjob.moc"
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