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<summary>Turn your Nextcloud into a web archive</summary> |
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<summary>Turn your Nextcloud into a web archive</summary> |
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<description> |
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<description> |
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If you host snapshots of web pages on your Nextcloud, this app enables any client that speaks the |
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If you host snapshots of web pages on your Nextcloud, this app enables any client that speaks the |
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Memento protocol to access these snapshots. |
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Memento protocol to access these snapshots. It is part of an experiment aiming to create personal |
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web archives. |
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The Memento protocol ([RFC7089][]) is widely used to ask archives (such as the Internet Archive's |
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The Memento protocol ([RFC7089][]) is widely used to ask archives (such as the Internet Archive's |
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[Wayback Machine][]) for their copies of web pages. For example, a client (e.g. a browser extension) |
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[Wayback Machine][]) for their copies of web pages. For example, a client (e.g. a browser extension) |
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may ask an archive whether it has a copy of `https://nextcloud.com` from around July last year, and |
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may ask an archive whether it has a copy of `https://nextcloud.com` from around July last year, and |
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—if successful— will be redirected to the closest match. |
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—if successful— will be redirected to the closest match. |
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Currently this app only supports snapshots that are stored as plain html files. It recognises a file |
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as being a snapshot if the file contains a <link> to the location of the original page; such |
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snapshots can be created using [Freeze-dry][]. |
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## Snapshot format |
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This app requires the app [Raw][] to also be installed, in order to host the snapshots. |
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Currently this app only supports snapshots that are stored as plain html files (supporting [WARC][] |
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files could be a future addition). It recognises a file as being a snapshot if the file contains a |
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`<link>` to the location of the original page; such snapshots can be created using [Freeze-dry][]. |
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For example, assume you have an html file `example.html`. If this file contains a `<link |
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rel="origin" href="https://example.org">` in its `<head>`, it will be recognised as a snapshot of |
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`https://example.org`. |
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## Usage |
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## Usage |
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The app presents a Memento TimeGate at the `/timegate/{url}` route. |
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This app presents a Memento TimeGate at the `/timegate/{url}` route. Assuming that the |
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`example.html` of the above example resides in a shared folder with URL `/s/123abc`, then visiting |
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`/apps/memento/timegate/https://example.org` would redirect you to |
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`/apps/raw/s/123abc/example.html` (hence you need the [Raw] app as well). |
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For example, assume you have an html file `example.html` in the folder `Documents/snapshots`. If |
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this file contains a `<link rel="origin" href="https://example.org">` in its `<head>`, |
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it will be recognised as a snapshot of `https://example.org`. Visiting |
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`/apps/memento/timegate/https://example.org` would then redirect you to |
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`/apps/raw/files/Documents/snapshots/example.html` (hence you need the [Raw] app as well). |
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Note that a private file will only be found if the client supplies login credentials (i.e. the |
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session cookie). Otherwise, only files/folders for which 'Share link' is enabled will be scanned. |
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In a Memento client (e.g. the [Memento Time Travel][] browser extension), you add your personal |
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archive as `https://my-nextcloud/apps/memento/timegate/` (of course first replace |
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`my-nextcloud` appropriately). |
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In a typical Memento client (e.g. the [Memento Time Travel][] browser extension), you would add your |
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archive as `https://my-nextcloud/apps/memento/timegate/` (of course first replace `my-nextcloud` |
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appropriately). |
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A TimeMap is also exposed, at the `/timemap/{url}` route, to list all available snapshots of a URL. |
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A TimeMap is also exposed, at the `/timemap/{url}` route, to list all available snapshots of a URL. |
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For details, look at the documentation of the Memento protocol ([RFC7089][]). |
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For details, look at the documentation of the Memento protocol ([RFC7089][]). |
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The app normally looks for shared snapshots of all users on the Nextcloud instance. To limit results |
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to those of a single user, use `.../u/{userid}/timegate/...` instead of `.../timegate/...` (and |
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likewise for `timemap`). |
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## Requirements |
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Besides of course Nextcloud itself (tested on version 14), this app requires the app [Raw][] to also |
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be installed, in order to host the snapshots. |
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[Memento Time Travel]: https://addons.mozilla.org/en-US/firefox/addon/memento-timetravel/ |
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[Memento Time Travel]: https://addons.mozilla.org/en-US/firefox/addon/memento-timetravel/ |
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[RFC7089]: https://tools.ietf.org/html/rfc7089 |
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[RFC7089]: https://tools.ietf.org/html/rfc7089 |
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[Wayback Machine]: https://web.archive.org/ |
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[Wayback Machine]: https://web.archive.org/ |
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[WARC]: https://iipc.github.io/warc-specifications/specifications/warc-format/warc-1.1/ |
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[Freeze-dry]: https://github.com/WebMemex/freeze-dry |
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[Freeze-dry]: https://github.com/WebMemex/freeze-dry |
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[Raw]: https://code.treora.com/gerben/nextcloud-raw |
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[Raw]: https://code.treora.com/gerben/nextcloud-raw |
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</description> |
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</description> |
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