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Add Ebook::DownloadUrl for web and feed downloads

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This commit adds a rewrite rule for ebook downloads of the form:

```
/ebooks/some-author/some-book/downloads/some-filename.epub
```

to `www/ebooks/download.php`. That file handles the logic of whether to
show a thank you page before beginning the download.

Download URLs in RSS, Atom, and OPDS feeds follow the same pattern, but
they have a query string parameter `?source=feed` to always skip the
thank you page.
This commit is contained in:
Mike Colagrosso 2025-04-24 16:20:44 -06:00 • committed by Alex Cabal
parent 1f41eb1e55
commit 03ed3c2257
10 changed files with 99 additions and 36 deletions
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8
templates/AtomFeedEntry.php
View file

@ -29,16 +29,16 @@ use function Safe\filesize;
<media:thumbnail url="<?= SITE_URL . $entry->Url ?>/downloads/cover-thumbnail.jpg" height="525" width="350"/>
<link href="<?= SITE_URL . $entry->Url ?>" rel="alternate" title="This ebook’s page at Standard Ebooks" type="application/xhtml+xml"/>
<? if(file_exists(WEB_ROOT . $entry->EpubUrl)){ ?>
<link href="<?= SITE_URL . $entry->EpubUrl ?>" length="<?= filesize(WEB_ROOT . $entry->EpubUrl) ?>" rel="enclosure" title="Recommended compatible epub" type="application/epub+zip" />
<link href="<?= SITE_URL . $entry->GetDownloadUrl(Enums\EbookFormatType::Epub, Enums\EbookDownloadSource::Feed) ?>" length="<?= filesize(WEB_ROOT . $entry->EpubUrl) ?>" rel="enclosure" title="Recommended compatible epub" type="application/epub+zip" />
<? } ?>
<? if(file_exists(WEB_ROOT . $entry->AdvancedEpubUrl)){ ?>
<link href="<?= SITE_URL . $entry->AdvancedEpubUrl ?>" length="<?= filesize(WEB_ROOT . $entry->AdvancedEpubUrl) ?>" rel="enclosure" title="Advanced epub" type="application/epub+zip" />
<link href="<?= SITE_URL . $entry->GetDownloadUrl(Enums\EbookFormatType::AdvancedEpub, Enums\EbookDownloadSource::Feed) ?>" length="<?= filesize(WEB_ROOT . $entry->AdvancedEpubUrl) ?>" rel="enclosure" title="Advanced epub" type="application/epub+zip" />
<? } ?>
<? if(file_exists(WEB_ROOT . $entry->KepubUrl)){ ?>
<link href="<?= SITE_URL . $entry->KepubUrl ?>" length="<?= filesize(WEB_ROOT . $entry->KepubUrl) ?>" rel="enclosure" title="Kobo Kepub epub" type="application/kepub+zip" />
<link href="<?= SITE_URL . $entry->GetDownloadUrl(Enums\EbookFormatType::Kepub, Enums\EbookDownloadSource::Feed) ?>" length="<?= filesize(WEB_ROOT . $entry->KepubUrl) ?>" rel="enclosure" title="Kobo Kepub epub" type="application/kepub+zip" />
<? } ?>
<? if(file_exists(WEB_ROOT . $entry->Azw3Url)){ ?>
<link href="<?= SITE_URL . $entry->Azw3Url ?>" length="<?= filesize(WEB_ROOT . $entry->Azw3Url) ?>" rel="enclosure" title="Amazon Kindle azw3" type="application/x-mobipocket-ebook" />
<link href="<?= SITE_URL . $entry->GetDownloadUrl(Enums\EbookFormatType::Azw3, Enums\EbookDownloadSource::Feed) ?>" length="<?= filesize(WEB_ROOT . $entry->Azw3Url) ?>" rel="enclosure" title="Amazon Kindle azw3" type="application/x-mobipocket-ebook" />
<? } ?>
<? if(file_exists(WEB_ROOT . $entry->TextSinglePageUrl . '.xhtml')){ ?>
<link href="<?= SITE_URL . $entry->TextSinglePageUrl ?>" length="<?= filesize(WEB_ROOT . $entry->TextSinglePageUrl . '.xhtml') ?>" rel="enclosure" title="XHTML" type="application/xhtml+xml" />

8
templates/OpdsAcquisitionEntry.php
View file

@ -42,16 +42,16 @@ use function Safe\filesize;
<link href="<?= SITE_URL . $entry->Url ?>/downloads/cover-thumbnail.jpg" rel="http://opds-spec.org/image/thumbnail" type="image/jpeg"/>
<link href="<?= SITE_URL . $entry->Url ?>" rel="alternate" title="This ebook’s page at Standard Ebooks" type="application/xhtml+xml"/>
<? if(file_exists(WEB_ROOT . $entry->EpubUrl)){ ?>
<link href="<?= SITE_URL . $entry->EpubUrl ?>" length="<?= filesize(WEB_ROOT . $entry->EpubUrl) ?>" rel="http://opds-spec.org/acquisition/open-access" title="Recommended compatible epub" type="application/epub+zip" />
<link href="<?= SITE_URL . $entry->GetDownloadUrl(Enums\EbookFormatType::Epub, Enums\EbookDownloadSource::Feed) ?>" length="<?= filesize(WEB_ROOT . $entry->EpubUrl) ?>" rel="http://opds-spec.org/acquisition/open-access" title="Recommended compatible epub" type="application/epub+zip" />
<? } ?>
<? if(file_exists(WEB_ROOT . $entry->AdvancedEpubUrl)){ ?>
<link href="<?= SITE_URL . $entry->AdvancedEpubUrl ?>" length="<?= filesize(WEB_ROOT . $entry->AdvancedEpubUrl) ?>" rel="http://opds-spec.org/acquisition/open-access" title="Advanced epub" type="application/epub+zip" />
<link href="<?= SITE_URL . $entry->GetDownloadUrl(Enums\EbookFormatType::AdvancedEpub, Enums\EbookDownloadSource::Feed) ?>" length="<?= filesize(WEB_ROOT . $entry->AdvancedEpubUrl) ?>" rel="http://opds-spec.org/acquisition/open-access" title="Advanced epub" type="application/epub+zip" />
<? } ?>
<? if(file_exists(WEB_ROOT . $entry->KepubUrl)){ ?>
<link href="<?= SITE_URL . $entry->KepubUrl ?>" length="<?= filesize(WEB_ROOT . $entry->KepubUrl) ?>" rel="http://opds-spec.org/acquisition/open-access" title="Kobo Kepub epub" type="application/kepub+zip" />
<link href="<?= SITE_URL . $entry->GetDownloadUrl(Enums\EbookFormatType::Kepub, Enums\EbookDownloadSource::Feed) ?>" length="<?= filesize(WEB_ROOT . $entry->KepubUrl) ?>" rel="http://opds-spec.org/acquisition/open-access" title="Kobo Kepub epub" type="application/kepub+zip" />
<? } ?>
<? if(file_exists(WEB_ROOT . $entry->Azw3Url)){ ?>
<link href="<?= SITE_URL . $entry->Azw3Url ?>" length="<?= filesize(WEB_ROOT . $entry->Azw3Url) ?>" rel="http://opds-spec.org/acquisition/open-access" title="Amazon Kindle azw3" type="application/x-mobipocket-ebook" />
<link href="<?= SITE_URL . $entry->GetDownloadUrl(Enums\EbookFormatType::Azw3, Enums\EbookDownloadSource::Feed) ?>" length="<?= filesize(WEB_ROOT . $entry->Azw3Url) ?>" rel="http://opds-spec.org/acquisition/open-access" title="Amazon Kindle azw3" type="application/x-mobipocket-ebook" />
<? } ?>
<? if(file_exists(WEB_ROOT . $entry->TextSinglePageUrl . '.xhtml')){ ?>
<link href="<?= SITE_URL . $entry->TextSinglePageUrl ?>" length="<?= filesize(WEB_ROOT . $entry->TextSinglePageUrl . '.xhtml') ?>" rel="http://opds-spec.org/acquisition/open-access" title="XHTML" type="application/xhtml+xml" />

2
templates/RssEntry.php
View file

@ -23,6 +23,6 @@ catch(Safe\Exceptions\FilesystemException){
<? } ?>
<media:thumbnail url="<?= SITE_URL . $entry->Url ?>/downloads/cover-thumbnail.jpg" height="525" width="350"/>
<? if($entry->EpubUrl !== null){ ?>
<enclosure url="<?= SITE_URL . Formatter::EscapeXml($entry->EpubUrl) ?>" length="<?= $filesize ?>" type="application/epub+zip" /> <? /* Only one <enclosure> is allowed */ ?>
<enclosure url="<?= SITE_URL . Formatter::EscapeXml($entry->GetDownloadUrl(Enums\EbookFormatType::Epub, Enums\EbookDownloadSource::Feed)) ?>" length="<?= $filesize ?>" type="application/epub+zip" /> <? /* Only one <enclosure> is allowed */ ?>
<? } ?>
</item>