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84 lines
3.2 KiB
84 lines
3.2 KiB
* BantFlags
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A user script and backend enabling user created flags on [[https://boards.4chan.org/bant][/bant/]],
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originally based on [[https://github.com/flaghunters/Extra-Flags-for-4chan][extraflags]].
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[[https://flags.plum.moe/bantflags.user.js][Install bantflags]]
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** Userscript
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The userscript uses of ~GM_xmlhttpRequest~ to get and post flags with
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the backend . A user's flags are stored between pages using ~GM_setValue~ and ~GM_getValue~.
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Old versions of GreaseMonkey will be able to recieve updates to the
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script through the ~@updateURL~ and ~@downloadURL~ directives, though
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these were depricated sometime in GreaseMonkey 3.x and updates are
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only checked from the location the script was downloaded from so be
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careful where you upload links.
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On self hosting, changing ~back_end~ to your domain /should/ be all
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you need to do, but don't take this as fact. I haven't tested the
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example nginx config.
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The userscript has been designed specifically to target ECMAScript
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2015 (ES6), making liberal use of arrow functions, and const/let
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declarations. Update your hecking browser.
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** Backend
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*** Prerequisites
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- I use SBCL
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*** Dependancies
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- hunchentoot
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- [[https://github.com/C-xC-c/hunchenhelpers][hunchenhelpers]], my hunchentoot helper library
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- clsql
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- jonathan, the JSON encoder/decoder
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- cl-ppcre
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*** Setup
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1. clone the project
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2. Symlink src/ to your ~/quicklisp/local-projects
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3. Move ~src/config.example.org~ to ~src/config.org~ and change it
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to whatever your settings are.
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4. Type the following into your repl:
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#+BEGIN_SRC lisp
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(ql:quickload :bantflags)
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(bantflags:main)
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#+END_SRC
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You will almost certainly have several issues building clsql, the
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database connector used. I've [[https://plum.moe/words/bludgeoning-clsql-and-mariadb.html][written a blog post]] on some of the
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issues I've encountered personally, but there's no guarantee it'll
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work. Piece of shit.
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*** Database
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Tables look like this:
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*posts*
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| id | post_nr | board |
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| 1 | 12345 | bant |
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| 2 | 56789 | bant |
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*flags*
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| id | flag |
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| 1 | patchouli |
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| 2 | chen |
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*postflags*
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| id | post_nr | flag |
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| 1 | 1 | 1 |
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| 2 | 1 | 2 |
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| 2 | 2 | 2 |
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where ~post_nr~ and ~flag~ in *postflags* are the id fields in their
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respective tables.
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*** API
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The backend exposes three endpoints for the userscript to get and
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post flags. Flags themselves are hosted from ~flags/~ which is
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~www-root/flags/~ from ~config.lisp~ on the filesystem
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| route | purpse |
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|------------+--------------------------------------------|
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| /api/get | Get flags using post numbers in the thread |
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| /api/post | Add flags to the database |
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| /api/flags | List the flags we support |
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| /flags/* | The flag images |
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** Notes
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You will get an error like =Recursive lock attempt #<SB-THREAD:MUTEX
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"global-message-log-lock" owner: #<SB-THREAD:THREAD
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"hunchentoot-worker-127.0.0.1:54454" RUNNING {1001DED5E3}>>.= if you
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try and log to a file that doesn't exist / you don't have permissions
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to read/write.
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