aboutsummaryrefslogtreecommitdiffhomepage
path: root/application/netscape/NetscapeBookmarkUtils.php
blob: b83f16f8eb8e49895bddaac648d1046c25a083c7 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
<?php

namespace Shaarli\Netscape;

use DateTime;
use DateTimeZone;
use Exception;
use Katzgrau\KLogger\Logger;
use Psr\Http\Message\UploadedFileInterface;
use Psr\Log\LogLevel;
use Shaarli\Bookmark\Bookmark;
use Shaarli\Bookmark\BookmarkServiceInterface;
use Shaarli\Config\ConfigManager;
use Shaarli\Formatter\BookmarkFormatter;
use Shaarli\History;
use Shaarli\NetscapeBookmarkParser\NetscapeBookmarkParser;

/**
 * Utilities to import and export bookmarks using the Netscape format
 */
class NetscapeBookmarkUtils
{
    /** @var BookmarkServiceInterface */
    protected $bookmarkService;

    /** @var ConfigManager */
    protected $conf;

    /** @var History */
    protected $history;

    public function __construct(BookmarkServiceInterface $bookmarkService, ConfigManager $conf, History $history)
    {
        $this->bookmarkService = $bookmarkService;
        $this->conf = $conf;
        $this->history = $history;
    }

    /**
     * Filters bookmarks and adds Netscape-formatted fields
     *
     * Added fields:
     * - timestamp  link addition date, using the Unix epoch format
     * - taglist    comma-separated tag list
     *
     * @param BookmarkFormatter        $formatter       instance
     * @param string                   $selection       Which bookmarks to export: (all|private|public)
     * @param bool                     $prependNoteUrl  Prepend note permalinks with the server's URL
     * @param string                   $indexUrl        Absolute URL of the Shaarli index page
     *
     * @return array The bookmarks to be exported, with additional fields
     *
     * @throws Exception Invalid export selection
     */
    public function filterAndFormat(
        $formatter,
        $selection,
        $prependNoteUrl,
        $indexUrl
    ) {
        // see tpl/export.html for possible values
        if (!in_array($selection, array('all', 'public', 'private'))) {
            throw new Exception(t('Invalid export selection:') . ' "' . $selection . '"');
        }

        $bookmarkLinks = array();
        foreach ($this->bookmarkService->search([], $selection) as $bookmark) {
            $link = $formatter->format($bookmark);
            $link['taglist'] = implode(',', $bookmark->getTags());
            if ($bookmark->isNote() && $prependNoteUrl) {
                $link['url'] = rtrim($indexUrl, '/') . '/' . ltrim($link['url'], '/');
            }

            $bookmarkLinks[] = $link;
        }

        return $bookmarkLinks;
    }

    /**
     * Imports Web bookmarks from an uploaded Netscape bookmark dump
     *
     * @param array                 $post Server $_POST parameters
     * @param UploadedFileInterface $file File in PSR-7 object format
     *
     * @return string Summary of the bookmark import status
     */
    public function import($post, UploadedFileInterface $file)
    {
        $start = time();
        $filename = $file->getClientFilename();
        $filesize = $file->getSize();
        $data = (string) $file->getStream();

        if (preg_match('/<!DOCTYPE NETSCAPE-Bookmark-file-1>/i', $data) === 0) {
            return $this->importStatus($filename, $filesize);
        }

        // Overwrite existing bookmarks?
        $overwrite = !empty($post['overwrite']);

        // Add tags to all imported bookmarks?
        if (empty($post['default_tags'])) {
            $defaultTags = array();
        } else {
            $defaultTags = preg_split(
                '/[\s,]+/',
                escape($post['default_tags'])
            );
        }

        // bookmarks are imported as public by default
        $defaultPrivacy = 0;

        $parser = new NetscapeBookmarkParser(
            true,                           // nested tag support
            $defaultTags,                   // additional user-specified tags
            strval(1 - $defaultPrivacy),    // defaultPub = 1 - defaultPrivacy
            $this->conf->get('resource.data_dir') // log path, will be overridden
        );
        $logger = new Logger(
            $this->conf->get('resource.data_dir'),
            !$this->conf->get('dev.debug') ? LogLevel::INFO : LogLevel::DEBUG,
            [
                'prefix' => 'import.',
                'extension' => 'log',
            ]
        );
        $parser->setLogger($logger);
        $bookmarks = $parser->parseString($data);

        $importCount = 0;
        $overwriteCount = 0;
        $skipCount = 0;

        foreach ($bookmarks as $bkm) {
            $private = $defaultPrivacy;
            if (empty($post['privacy']) || $post['privacy'] == 'default') {
                // use value from the imported file
                $private = $bkm['pub'] == '1' ? 0 : 1;
            } elseif ($post['privacy'] == 'private') {
                // all imported bookmarks are private
                $private = 1;
            } elseif ($post['privacy'] == 'public') {
                // all imported bookmarks are public
                $private = 0;
            }

            $link = $this->bookmarkService->findByUrl($bkm['uri']);
            $existingLink = $link !== null;
            if (! $existingLink) {
                $link = new Bookmark();
            }

            if ($existingLink !== false) {
                if ($overwrite === false) {
                    // Do not overwrite an existing link
                    $skipCount++;
                    continue;
                }

                $link->setUpdated(new DateTime());
                $overwriteCount++;
            } else {
                $newLinkDate = new DateTime('@' . strval($bkm['time']));
                $newLinkDate->setTimezone(new DateTimeZone(date_default_timezone_get()));
                $link->setCreated($newLinkDate);
            }

            $link->setTitle($bkm['title']);
            $link->setUrl($bkm['uri'], $this->conf->get('security.allowed_protocols'));
            $link->setDescription($bkm['note']);
            $link->setPrivate($private);
            $link->setTagsString($bkm['tags']);

            $this->bookmarkService->addOrSet($link, false);
            $importCount++;
        }

        $this->bookmarkService->save();
        $this->history->importLinks();

        $duration = time() - $start;

        return $this->importStatus(
            $filename,
            $filesize,
            $importCount,
            $overwriteCount,
            $skipCount,
            $duration
        );
    }

    /**
     * Generates an import status summary
     *
     * @param string $filename       name of the file to import
     * @param int    $filesize       size of the file to import
     * @param int    $importCount    how many bookmarks were imported
     * @param int    $overwriteCount how many bookmarks were overwritten
     * @param int    $skipCount      how many bookmarks were skipped
     * @param int    $duration       how many seconds did the import take
     *
     * @return string Summary of the bookmark import status
     */
    protected function importStatus(
        $filename,
        $filesize,
        $importCount = 0,
        $overwriteCount = 0,
        $skipCount = 0,
        $duration = 0
    ) {
        $status = sprintf(t('File %s (%d bytes) '), $filename, $filesize);
        if ($importCount == 0 && $overwriteCount == 0 && $skipCount == 0) {
            $status .= t('has an unknown file format. Nothing was imported.');
        } else {
            $status .= vsprintf(
                t(
                    'was successfully processed in %d seconds: '
                    . '%d bookmarks imported, %d bookmarks overwritten, %d bookmarks skipped.'
                ),
                [$duration, $importCount, $overwriteCount, $skipCount]
            );
        }
        return $status;
    }
}