[WIP] adding thumbnails

.gitignore

@@ -0,0 +1,3 @@
+venv
+.idea
+data

README.md

@@ -0,0 +1,13 @@
+# ShareX_Storage
+Simple tool to act as endpoint to upload files through ShareX to.
+
+## Requirements
+* [PyYAML](https://pypi.org/project/PyYAML/)
+* [pycryptodomex](https://pypi.org/project/pycryptodomex/)
+* [aiohttp](https://pypi.org/project/aiohttp/)
+
++ [thumbnail](https://pypi.org/project/thumbnail/) (optional)
++ [unoconv](https://github.com/unoconv/unoconv) (optional)
++ [ffmpeg](https://www.ffmpeg.org/) (optional)
++ [imagemagick](https://imagemagick.org/index.php) (optional)
++ [curl](https://curl.se/) (optional)

config.yaml

@@ -27,3 +27,18 @@ base_url: 'https://your-domain.net/f/'
 # Should file extensions be appended to the generated links.
 # Links always work with or without file extensions (like puush.me).
 show_ext: True
+
+# Should a frontend to view and manage uploads be exposed?
+frontend: True
+
+# Should thumbnails of uploaded files be created for frontend viewing.
+thumbnails: True
+
+# Directory for storing thumbnails
+thumbnail_path: 'data/thumbs'
+
+# Strategy for creating thumbnails. Possible values are:
+# on-upload: Creates a thumbnail when uploading a file.
+# on-request: Creates a thumbnail when requested by the frontend.
+# both: Creates a thumbnail on request if one hasn't been created on upload.
+thumbnail_strategy: 'both'

requirements.txt

@@ -0,0 +1,4 @@
+PyYAML
+pycryptodomex
+aiohttp
+thumbnail

sharex_server.py

@@ -10,6 +10,16 @@ from Cryptodome.Cipher import AES
 from Cryptodome.Util import Padding
 from aiohttp import web, hdrs
 
+from thumbnail import generate_thumbnail
+
+ThumbnailOptions = {
+    'trim': False,
+    'height': 300,
+    'width': 300,
+    'quality': 85,
+    'type': 'thumbnail'
+}
+
 
 class AppConfig:
     _instance = None
@@ -36,6 +46,10 @@ class AppConfig:
         self.show_ext = data.get('show_ext', True)
         self.max_filesize = data.get('max_filesize', '1024 ** 2 * 100')  # Default 100 MB
         self.base_url = data.get('base_url', 'http://localhost/f/')
+        self.frontend = data.get('frontend', False)
+        self.thumbnails = data.get('thumbnails', False)
+        self.thumbnail_path = data.get('thumbnail_path', '/data/thumbs')
+        self.thumbnail_strategy = data.get('thumbnail_strategy', 'both')
 
         self.validate_config()
 
@@ -52,6 +66,9 @@ class AppConfig:
         if not os.path.isdir(self.data_path):
             os.mkdir(self.data_path)
 
+        if not os.path.isdir(self.thumbnail_path):
+            os.mkdir(self.thumbnail_path)
+
         self.base_url = f"{self.base_url.strip("/ \t\r\n")}"
 
     @staticmethod
@@ -100,7 +117,7 @@ async def handle_upload(req):
         os.mkdir(f'{conf.data_path}')
 
     for _ in range(100):
-        hb = os.urandom(conf.url_hash_len//2)
+        hb = os.urandom(conf.url_hash_len // 2)
         h = hb.hex()
         if h not in file_db:
             break
@@ -119,7 +136,11 @@ async def handle_upload(req):
         c = AES.new(conf.del_crypt_key, AES.MODE_CBC)
         hb = Padding.pad(hb, AES.block_size)
         del_h = (c.encrypt(hb) + c.iv).hex()
+        local_thname = f'{conf.thumbnail_path}/{h}_{filename}.png'
+        generate_thumbnail(local_fname, local_thname, ThumbnailOptions)
+
         return web.Response(text=f'{{"file_link":"{conf.base_url}/{h}{ext}",'
+                                 f'"thumb_link":"{conf.base_url}/thumb/{h}{ext}",'
                                  f'"delete_link":"{conf.base_url}/del/{del_h}"}}', status=200)
 
     os.unlink(local_fname)
@@ -169,6 +190,18 @@ async def handle_download(req):
     })
 
 
+async def handle_thumbnail(req):
+    fhash = req.match_info.get('hash', '').split('.', 1)[0]
+    if fhash not in file_db:
+        return web.Response(text='file not found', status=404)
+
+    ## TODO: If thumbnail doesn't exist, generate new thumbnail
+
+    return web.FileResponse(f"{conf.thumbnail_path}/{fhash}_{file_db[fhash]}", headers={
+        hdrs.CONTENT_DISPOSITION: f'inline;filename="{file_db[fhash]}"'
+    })
+
+
 def main():
     for file in os.listdir(f"{conf.data_path}"):
         try:
@@ -185,6 +218,7 @@ def main():
     app.router.add_post(base_path + '/post', handle_upload)
     app.router.add_get(base_path + '/del/{hash}', handle_delete)
     app.router.add_get(base_path + '/{hash}', handle_download)
+    app.router.add_get(base_path + '/thumb/{hash}', handle_thumbnail)
 
     web.run_app(app, port=80)