Yea

Signed-off-by: Slendi <slendi@socopon.com>

main.go

@@ -12,6 +12,7 @@ import (
 	"net/http"
 	"os"
 	"path/filepath"
+	"strconv"
 	"strings"
 	"sync"
 	"time"
@@ -34,6 +35,7 @@ var assetsFS embed.FS
 type meta struct {
 	Expiry       time.Time `json:"expiry"`
 	ExpireOnView bool      `json:"expire_on_view"`
+	FileName     string    `json:"file_name,omitempty"`
 }
 
 func init() {
@@ -144,8 +146,8 @@ Upload from stdin and expire on first view:
 			<input type="submit" value="Upload file">
 		</div>
 	</form>
-	<h2 style="margin-top:1.5rem">Quick text</h2>
+	<h2 style="margin-top:1.5rem">No file? Type your text in here!</h2>
-	<p class="small">Type or paste text and upload as a .txt (no file chooser needed).</p>
+	<p class="small">Type or paste text and upload as a .txt.</p>
 	<textarea id="textArea" placeholder="Type or paste here..."></textarea>
 	<div class="controls" style="margin-top:.5rem">
 		<button id="uploadTextBtn" type="button">Upload text</button>
@@ -285,6 +287,7 @@ func uploadHandler(w http.ResponseWriter, r *http.Request) {
 
 	var reader io.Reader
 	var ext string
+	var fileName string
 
 	contentType := r.Header.Get("Content-Type")
 	if strings.HasPrefix(contentType, "multipart/form-data") {
@@ -293,6 +296,7 @@ func uploadHandler(w http.ResponseWriter, r *http.Request) {
 				defer file.Close()
 				reader = file
 				ext = filepath.Ext(header.Filename)
+				fileName = filepath.Base(header.Filename)
 			}
 		}
 	}
@@ -345,7 +349,10 @@ func uploadHandler(w http.ResponseWriter, r *http.Request) {
 			m.Expiry = time.Now().Add(d)
 		}
 	}
-	if !m.Expiry.IsZero() || m.ExpireOnView {
+	if fileName != "" {
+		m.FileName = fileName
+	}
+	if !m.Expiry.IsZero() || m.ExpireOnView || m.FileName != "" {
 		metaBytes, _ := json.Marshal(m)
 		_ = os.WriteFile(path+".json", metaBytes, 0644)
 	}
@@ -357,6 +364,20 @@ func uploadHandler(w http.ResponseWriter, r *http.Request) {
 	fmt.Fprintf(w, "%s://%s/%s\n", scheme, domain, filename)
 }
 
+func contentDispositionInlineFilename(name string) string {
+	q := strconv.QuoteToASCII(name)
+	var b strings.Builder
+	for i := 0; i < len(name); i++ {
+		c := name[i]
+		if (c >= '0' && c <= '9') || (c >= 'A' && c <= 'Z') || (c >= 'a' && c <= 'z') || c == '.' || c == '-' || c == '_' {
+			b.WriteByte(c)
+		} else {
+			fmt.Fprintf(&b, "%%%02X", c)
+		}
+	}
+	return fmt.Sprintf(`inline; filename=%s; filename*=UTF-8''%s`, q, b.String())
+}
+
 func viewHandler(w http.ResponseWriter, r *http.Request) {
 	id := strings.TrimPrefix(r.URL.Path, "/")
 	if id == "" {
@@ -379,6 +400,9 @@ func viewHandler(w http.ResponseWriter, r *http.Request) {
 				defer os.Remove(path)
 				defer os.Remove(metaPath)
 			}
+			if m.FileName != "" {
+				w.Header().Set("Content-Disposition", contentDispositionInlineFilename(m.FileName))
+			}
 		}
 	}