hopefully fix issues with empty extension

src/controllers/paste_controller.cr

@@ -3,10 +3,10 @@ module Paste69
   class PasteController < ATH::Controller
     def initialize(@config : Paste69::ConfigManager, @utils : Paste69::UtilsService, @url_encoder : Paste69::UrlEncoder, @db : Paste69::DBService, @s3_client : Paste69::S3Client); end
 
-    @[ARTA::Get("/{id}")]
+    @[ARTA::Get("/{id}", requirements: {"id" => /.+/})]
-    @[ARTA::Post("/{id}")]
+    @[ARTA::Post("/{id}", requirements: {"id" => /.+/})]
-    @[ARTA::Get("/{secret}/{id}")]
+    @[ARTA::Get("/{secret}/{id}", requirements: {"id" => /.+/})]
-    @[ARTA::Post("/{secret}/{id}")]
+    @[ARTA::Post("/{secret}/{id}", requirements: {"id" => /.+/})]
     def get_paste(req : ATH::Request, id : String, secret : String? = nil) : ATH::Response
       path = id.split("/").first
       sufs = File.extname(path)
@@ -136,9 +136,14 @@ module Paste69
       end
 
       if form.has_key?("file")
-        _filename, body = form["file"]
+        filename, body = form["file"]
-        _, filename = form["filename"] || {nil, nil}
+        _, ext = form["ext"] || {nil, nil}
-        filename = filename ? String.new(filename) : nil
+
+        if ext
+          filename = filename ? File.basename(filename, File.extname(filename)) : "file"
+          ext = String.new(ext).lstrip(".")
+          filename = "#{filename}.#{ext}"
+        end
 
         @utils.store_file(
           body,

src/templates/index.html.j2

@@ -17,25 +17,29 @@ Be sure to check out the <a href="https://github.com/watzon/paste69">source code
 and the <a href="https://git.0x0.st/mia/0x0">original source</a> from mia.
 
 HTTP POST files here:
-    curl -F'file=@yourfile.png' {{ fhost_url }}
+    curl -i -F'file=@yourfile.png' {{ fhost_url }}
 You can also POST remote URLs:
-    curl -F'url=http://example.com/image.jpg' {{ fhost_url }}
+    curl -i -F'url=http://example.com/image.jpg' {{ fhost_url }}
 If you don't want the resulting URL to be easy to guess:
-    curl -F'file=@yourfile.png' -Fsecret= {{ fhost_url }}
+    curl -i -F'file=@yourfile.png' -Fsecret= {{ fhost_url }}
-    curl -F'url=http://example.com/image.jpg' -Fsecret= {{ fhost_url }}
+    curl -i -F'url=http://example.com/image.jpg' -Fsecret= {{ fhost_url }}
 Or you can shorten URLs:
-    curl -F'shorten=http://example.com/some/long/url' {{ fhost_url }}
+    curl -i -F'shorten=http://example.com/some/long/url' {{ fhost_url }}
 
-It is possible to append your own file name to the URL:
+In some cases (like when piping STDOUT), you may need to add an extension manually. Otherwise
+the extension will default to .txt or .bin:
+    curl -i -F'file=@-' -Fext=html {{ fhost_url }}
+
+It is also possible to append your own file name to the URL:
     {{ fhost_url }}/aaa.jpg/image.jpeg
 
 File URLs are valid for at least 30 days and up to a year (see below).
 Shortened URLs do not expire.
 
 Files can be set to expire sooner by adding an "expires" parameter (in hours)
-    curl -F'file=@yourfile.png' -Fexpires=24 {{ fhost_url }}
+    curl -i -F'file=@yourfile.png' -Fexpires=24 {{ fhost_url }}
 OR by setting "expires" to a timestamp in epoch milliseconds
-    curl -F'file=@yourfile.png' -Fexpires=1681996320000 {{ fhost_url }}
+    curl -i -F'file=@yourfile.png' -Fexpires=1681996320000 {{ fhost_url }}
 
 Expired files won't be removed immediately, but will be removed as part of
 the next purge.
@@ -45,9 +49,9 @@ the HTTP response header includes an X-Token field. You can use this
 to perform management operations on the file.
 
 To delete the file immediately:
-    curl -Ftoken=token_here -Fdelete= {{ fhost_url }}/abc.txt
+    curl -i -Ftoken=token_here -Fdelete= {{ fhost_url }}/abc.txt
 To change the expiration date (see above):
-    curl -Ftoken=token_here -Fexpires=3 {{ fhost_url }}/abc.txt
+    curl -i -Ftoken=token_here -Fexpires=3 {{ fhost_url }}/abc.txt
 
 {% set max_size = config["max_content_length"]|filesizeformat(true) %}
 Maximum file size: {{ max_size }}