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