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219 lines
7.7 KiB
Groff
219 lines
7.7 KiB
Groff
.Dd $Mdocdate$
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.Dt SNAC 5
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.Os
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.Sh NAME
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.Nm snac
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.Nd message formatting and file format documentation
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.Sh DESCRIPTION
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The
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.Nm
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daemon processes messages from other servers in the Fediverse
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using the ActivityPub protocol.
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.Pp
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This manual describes the allowed formatting of note messages
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and the disk storage layout of
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.Nm
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server and user data. For the operation manual, see
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.Xr snac 1 .
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For the administration manual, see
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.Xr snac 8 .
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.Ss Message Formatting
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Message notes respect the entered new line breaks rigurously.
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A special subset of Markdown is allowed, including:
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.Bl -tag -width tenletters
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.It bold
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**text between two pairs of asterisks**
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.It italic
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*text between a pair of asterisks*
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.It strikethrough text
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~~text between a pair of tildes~~
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.It code
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Text `between backticks` is formatted as code.
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.Bd -literal
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```
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/* text between lines with only three backticks is preformatted */
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int main(int argc, char *argv[])
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{
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return 0;
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}
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```
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.Ed
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.It links
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Standalone URLs are converted to links. Also, from version 2.54,
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markdown-style links in the form of [link label](url) are also
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supported.
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.It attached images
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Standalone URLs for which the final extension is recognized as an
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image (.jpg, .gif, .png, etc), are converted to ActivityPub image
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attachments. Also, from version 2.57, markdown-style image links
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in the form of  are also supported.
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.It line separators
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Horizonal rules can be inserted by typing three minus symbols
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alone in a line.
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.It quoted text
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Lines starting with >.
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.It user mentions
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Strings in the format @user@host are requested using the Webfinger
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protocol and converted to links and mentions if something reasonable
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is found.
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.It emoticons /emojis / smileys / silly symbols
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(Note: from version 2.51, these symbols are configurable by the
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instance administrator, so the available ones may differ).
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.Pp
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The following traditional ASCII emoticons or special strings are
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converted to related emojis:
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.Bd -literal
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:-) :-D X-D ;-) B-) :-( :-* <3 :-/ 8-o
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%-) :_( :-| >:-( :facepalm: :shrug: :shrug2:
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:eyeroll: :beer: :beers: :munch: :thumb:
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.Ed
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.El
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.Pp
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.Ss Accepted HTML
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All HTML tags in entries are neutered except the following ones:
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.Bd -literal
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a p br blockquote ul ol li cite small
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span i b u s pre code em strong hr img del
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.Ed
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.Pp
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.Ss Disk Layout
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This section documents version 2.7 of the disk storage layout.
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.Pp
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The base directory contains the following files and folders:
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.Bl -tag -width tenletters
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.It Pa server.json
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Server configuration.
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.It Pa user/
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Directory holding user subdirectories.
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.It Pa object/
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Directory holding the ActivityPub objects. Filenames are hashes of each
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message Id, stored in subdirectories starting with the first two letters
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of the hash.
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.It Pa queue/
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This directory contains the global queue of input/output messages as JSON files.
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File names contain timestamps that indicate when the message will
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be sent. Messages not accepted by their respective servers will be re-enqueued
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for later retransmission until a maximum number of retries is reached,
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then discarded.
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.It Pa inbox/
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Directory storing collected inbox URLs from other instances.
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.It Pa archive/
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If this directory exists, all input and output messages are logged inside it,
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including HTTP headers. Only useful for debugging. May grow to enormous sizes.
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.It Pa error/
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If this directory exists, HTTP signature check error headers are logged here.
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Only useful for debugging.
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.It Pa log/
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If this directory exists, log messages are also stored there in daily files.
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.It Pa app/
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This directory stores Mastodon API apps.
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.It Pa token/
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This directory stores Mastodon API tokens.
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.It Pa style.css
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The server-wide CSS. The content of this file is inserted into the HTML output
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unless a user-specific one exist in the user's
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.Pa static/
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folder.
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.It Pa greeting.html
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This file is served when the server base URL is requested from a web browser. See
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.Xr snac 8
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for more information about the customization options.
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.It Pa public.idx
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This file contains the list of public posts from all users in the server.
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.It Pa filter_reject.txt
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This (optional) file contains a list of regular expressions, one per line, to be
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applied to the content of all incoming posts; if any of them match, the post is
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rejected. This brings the flexibility and destruction power of regular expressions
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to your Fediverse experience. To be used wisely (see
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.Xr snac 8
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for more information).
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.It Pa announcement.txt
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If this file is present, an announcement will be shown to logged in users
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on every page with its contents. It is also available through the Mastodon API.
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Users can dismiss the announcement, which works by storing the modification time
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in the "last_announcement" field of the
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.Pa user.json
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file. When the file is modified, the announcement will then reappear. It can
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contain only text and will be ignored if it has more than 2048 bytes.
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.El
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.Pp
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Each user directory is a subdirectory of
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.Pa BASEDIR/user/ ,
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has the user id as name and contains the following subdirectories and files:
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.Bl -tag -width tenletters
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.It Pa user.json
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User configuration file.
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.It Pa user_o.json
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User configuration override file. This file is intended for administrators to
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override some user preferences. For current version, the fields that can be
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overridden are 'purge_days' and 'email'.
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.It Pa key.json
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Secret/public key PEM data.
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.It Pa followers.idx
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This file contains the list of followers as a list of hashed object identifiers.
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.It Pa followers/
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This directory stores hard links to the actor objects in the object storage.
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.It Pa following/
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This directory stores the users being followed as hard links to the 'Follow'
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or 'Accept' objects in the object storage. File names are the hashes of each
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actor Id.
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.It Pa private/
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This directory stores hard links to the timeline entries in the object storage.
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.It Pa private.idx
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This file contains the list of timeline entries as a list of hashed
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object identifiers.
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.It Pa public/
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This directory stores hard links to the public timeline entries in the object
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storage.
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.It Pa public.idx
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This file contains the list of public timeline entries as a list of hashed
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object identifiers.
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.It Pa pinned/
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This directory stores hard links to pinned posts.
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.It Pa pinned.idx
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This file contains the list of pinned posts as a list of hashed
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object identifiers.
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.It Pa bookmark/
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This directory stores hard links to bookmarked posts.
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.It Pa bookmark.idx
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This file contains the list of pinned posts as a list of hashed
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object identifiers.
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.It Pa draft/
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This directory stores post drafts.
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.It Pa draft.idx
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This file contains the list of drafts as a list of hashed
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object identifiers.
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.It Pa muted/
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This directory contains files which names are hashes of muted actors. The
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content is a line containing the actor URL.
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Messages from these actors will be ignored on input and not shown in any timeline.
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.It Pa hidden/
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This directory contains references to the hidden timeline entries.
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.It Pa limited/
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This directory contains references to the actor URLs for limited users (those
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being followed but with their boosts blocked).
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.It Pa queue/
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This directory contains the output queue of messages generated by the user as
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JSON files. File names contain timestamps that indicate when the message will
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be sent. Messages not accepted by their respective servers will be re-enqueued
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for later retransmission until a maximum number of retries is reached,
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then discarded.
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.It Pa static/
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Files in this directory are served as-is when requested from the
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.Pa https://HOST/USER/s/...
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URL path. A special file named
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.Pa style.css
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can contain user-specific CSS code to be inserted into the HTML of the
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web interface.
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.It Pa history/
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This directory contains generated HTML files. They may be snapshots of the
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local timeline in previous months or other cached data.
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.El
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.Sh SEE ALSO
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.Xr snac 1 ,
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.Xr snac 8
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.Sh AUTHORS
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.An grunfink Lk https://comam.es/snac/grunfink @grunfink@comam.es
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.Sh LICENSE
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See the LICENSE file for details.
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