Merge pull request 'Release v0.5.1: dev -> main' (#302) from dev into main

Owner override postdating PR #300 QA pass:
- .col-url 340 -> 230px; reclaim slack from history-only columns (Views 96->90,
  Created 190->150, ID 190->120) so the table fits the .float pane with no
  horizontal scroll at 1400x900 and the ID column is fully visible.
- URL anchors drop the shared .slug pill (background/padding/radius/mono font)
  and render plain, styled via td.dim exactly like the none case; links stay
  anchors with accent hover. Ellipsis kept for genuinely long slugs.

Verified by CDP probe on a local build at 1400x900 and 375x812 on /public and
/mine (/saved): column order, table fits pane (scrollWidth == clientWidth),
20-char slug fully visible, min Created-to-URL content gap 77px, sort arrows
intact 6px right of labels, no CSP/console violations. go build/test pass.

README.md

@@ -21,6 +21,7 @@ a web UI for sharing text and small files.
 - Cookie based saved pastes and settings
 - Five base themes (midnight, smooth, pastel-lavender, pastel-peach, pastel-cloud), each with a dark and light variant
 - Dark mode toggle in the topbar and settings, with a configurable default
+- Polished code viewer: line-number gutter sized to the widest number and pinned during horizontal scroll, optional line wrap, jump-to-top/bottom buttons, and theme-aware scrollbars
 
 ## Screenshots
 
@@ -30,7 +31,6 @@ a web UI for sharing text and small files.
 | ![Public pastes list](https://git.archfox.org/poslop/palette/wiki/raw/palette-previews%2Fdesktop-public.png) | ![Settings and theme picker](https://git.archfox.org/poslop/palette/wiki/raw/palette-previews%2Fdesktop-settings-themes.png) |
 
 
-Mobile previews (375x812): [paste view](https://git.archfox.org/poslop/palette/wiki/raw/palette-previews%2Fmobile-paste-midnight-dark.png), [public list](https://git.archfox.org/poslop/palette/wiki/raw/palette-previews%2Fmobile-public.png), [settings](https://git.archfox.org/poslop/palette/wiki/raw/palette-previews%2Fmobile-settings.png).
 
 ## Get Started
 
@@ -66,11 +66,10 @@ go build -o palette ./cmd/palette
 | `PALETTE_ADDR` | `:8080` | Listen address |
 | `PALETTE_DB` | `palette.db` | SQLite database path |
 | `PALETTE_MAX_TEXT` | `5242880` | Max paste size in bytes (5 MB) |
-| `PALETTE_MAX_ITEM` | `26214400` | Max can item size in bytes (25 MB) |
+| `PALETTE_MAX_ITEM` | `26214400` | Max can item / file attachment size in bytes (25 MB) |
 | `PALETTE_ADMIN_KEY` | generated | Admin key; if unset a 32-char hex key is generated and persisted to `<db-dir>/admin-key` (0600) |
 | `PALETTE_DEFAULT_DARK` | dark on | Default dark mode for new visitors. Set `false`, `0`, or `off` to default to light mode. Visitors who toggle dark mode keep their choice in their browser. |
 | `PALETTE_UNLOCK_SECRET` | random per start | HMAC secret for password-unlock cookies. Set a fixed value to keep unlock sessions across restarts or across replicas. |
-| `PALETTE_TRUSTED_IP_HEADER` | unset | Name of a proxy-controlled client-IP header to key API rate limits on (e.g. `CF-Connecting-IP` when Cloudflare is the ingress; Cloudflare strips any client-supplied value). Unset: rate limits key on the peer address only, and all client-supplied IP headers (X-Forwarded-For, X-Real-Ip) are ignored. (#280) |
 
 An `/admin` page exists for runtime settings, protected by a key set at
 install (`PALETTE_ADMIN_KEY` env var) and resettable locally. See
@@ -102,4 +101,4 @@ data loss, or legal issues arising from use of the software. You use it
 at your own risk.
 
 If you run a modified version of Palette as a network service, the AGPL
-requires you to offer your modified source code to its users.
+requires you to offer your modified source code to its users.

docker-compose.yml

@@ -32,10 +32,16 @@ services:
       # Default: 5242880 (5 MiB).
       # PALETTE_MAX_TEXT: "5242880"
 
-      # Max size in bytes of a single can item (file/text inside a can).
+      # Max size in bytes of a single can item (file/text inside a can) or a
+      # paste file attachment.
       # Default: 26214400 (25 MiB).
       # PALETTE_MAX_ITEM: "26214400"
 
+      # Default dark mode for new visitors. Unset = dark on; set to "false",
+      # "0" or "off" to default to light mode. Visitors who toggle dark mode
+      # keep their choice in their browser.
+      # PALETTE_DEFAULT_DARK: "false"
+
       # HMAC secret for password-unlock cookies. Default: random per start,
       # which logs out every unlocked browser session on restart. Set a fixed
       # secret (any random string) to keep unlock sessions across restarts,

internal/api/attachments.go

@@ -91,17 +91,6 @@ func (l *limitReader) Read(p []byte) (int, error) {
 	return n, err
 }
 
-// isImageMime reports whether the sniffed mime is a raster image the viewer
-// can render inline (#221). SVG is excluded: it is forced to text/plain on
-// serving by the active-content rule and must never render as an image.
-func isImageMime(mime string) bool {
-	switch mime {
-	case "image/png", "image/jpeg", "image/gif", "image/webp":
-		return true
-	}
-	return false
-}
-
 // handleCreatePasteMultipart implements POST /api/pastes with
 // multipart/form-data (#38). Fields mirror the JSON create path; a 'file'
 // part makes the paste a file paste (1 file = 1 paste: if text content is

internal/api/attachments_test.go

@@ -306,3 +306,64 @@ func TestMultipartPasswordFieldAccepted(t *testing.T) {
 		t.Fatalf("paste should require password, got %d", rec2.Code)
 	}
 }
+
+// #281: /raw/{id} must stream the attachment blob for ALL attachment mimes,
+// not just raster images (the old isImageMime gate left non-image
+// attachments serving an empty body from row.Content).
+func TestRawStreamsNonImageAttachment(t *testing.T) {
+	s := testServer(t)
+	h := s.routes()
+
+	body := []byte("hello, this is a plain text attachment body")
+	rec, resp := multipartCreate(t, h, "notes.txt", body, nil)
+	if rec.Code != 201 {
+		t.Fatalf("create: %d %s", rec.Code, rec.Body.String())
+	}
+	if resp["attachment"] == nil {
+		t.Fatalf("no attachment in response: %v", resp)
+	}
+	id, _ := resp["id"].(string)
+
+	req := httptest.NewRequest("GET", "/raw/"+id, nil)
+	rec2 := httptest.NewRecorder()
+	h.ServeHTTP(rec2, req)
+	if rec2.Code != 200 {
+		t.Fatalf("raw: %d %s", rec2.Code, rec2.Body.String())
+	}
+	if got := rec2.Header().Get("Content-Type"); got != "text/plain; charset=utf-8" {
+		t.Fatalf("Content-Type = %q", got)
+	}
+	if got := rec2.Header().Get("X-Content-Type-Options"); got != "nosniff" {
+		t.Fatalf("nosniff = %q", got)
+	}
+	if !bytes.Equal(rec2.Body.Bytes(), body) {
+		t.Fatalf("raw bytes differ: got %d bytes want %d", rec2.Body.Len(), len(body))
+	}
+}
+
+// #281: active-content attachment types still get forced to text/plain on
+// /raw, same rule as the /f/ serving path (#34).
+func TestRawHtmlAttachmentServesAsPlainText(t *testing.T) {
+	s := testServer(t)
+	h := s.routes()
+
+	html := []byte("<html><body><script>alert(1)</script></body></html>")
+	rec, resp := multipartCreate(t, h, "page.html", html, nil)
+	if rec.Code != 201 {
+		t.Fatalf("create: %d %s", rec.Code, rec.Body.String())
+	}
+	id, _ := resp["id"].(string)
+
+	req := httptest.NewRequest("GET", "/raw/"+id, nil)
+	rec2 := httptest.NewRecorder()
+	h.ServeHTTP(rec2, req)
+	if rec2.Code != 200 {
+		t.Fatalf("raw: %d %s", rec2.Code, rec2.Body.String())
+	}
+	if got := rec2.Header().Get("Content-Type"); got != "text/plain; charset=utf-8" {
+		t.Fatalf("Content-Type = %q", got)
+	}
+	if !bytes.Equal(rec2.Body.Bytes(), html) {
+		t.Fatal("raw bytes differ from upload")
+	}
+}

internal/api/clientip.go

@@ -7,48 +7,18 @@
 // per request and the limit was unenforceable (pentest H1: 6x201 across 8
 // rotating-XFF creates).
 //
-// Default: key on the actual peer address (RemoteAddr) only. Behind any
+// The bucket key is the actual peer address (RemoteAddr) only. Behind any
 // reverse proxy this is the proxy's address, so all clients share one bucket
-// per endpoint — coarse, but safe.
-//
-// Proxy-honoring mode: a deployment in front of a proxy that OVERWRITES (not
-// appends to) a client-IP header can set PALETTE_TRUSTED_IP_HEADER (e.g.
-// CF-Connecting-IP when Cloudflare is the ingress; Cloudflare strips any
-// client-supplied value). The header is honored ONLY when explicitly
-// configured at startup, and X-Forwarded-For / X-Real-Ip are never trusted.
+// per endpoint — coarse, but safe. Client-supplied IP headers
+// (X-Forwarded-For, X-Real-Ip) are never trusted.
 package api
 
 import (
 	"net"
 	"net/http"
-	"sync"
 )
 
-var (
-	trustedIPMu     sync.RWMutex
-	trustedIPHeader string // empty = never trust any client-IP header
-)
-
-// SetTrustedIPHeader configures the single proxy-controlled header whose
-// value may key rate-limit buckets. Called at startup; tests may reset it.
-func SetTrustedIPHeader(name string) {
-	trustedIPMu.Lock()
-	defer trustedIPMu.Unlock()
-	trustedIPHeader = name
-}
-
-func getTrustedIPHeader() string {
-	trustedIPMu.RLock()
-	defer trustedIPMu.RUnlock()
-	return trustedIPHeader
-}
-
 func clientIP(r *http.Request) string {
-	if name := getTrustedIPHeader(); name != "" {
-		if v := r.Header.Get(name); v != "" {
-			return v
-		}
-	}
 	host := r.RemoteAddr
 	if h, _, err := net.SplitHostPort(r.RemoteAddr); err == nil {
 		host = h

internal/api/ratelimit_xff_test.go

@@ -7,8 +7,6 @@ import (
 )
 
 func TestClientIPUsesRemoteAddrNotXFF(t *testing.T) {
-	SetTrustedIPHeader("")
-	defer SetTrustedIPHeader("")
 	r := httptest.NewRequest("POST", "/api/pastes", nil)
 	r.RemoteAddr = "203.0.113.7:4432"
 	r.Header.Set("X-Forwarded-For", "1.2.3.4, 1.2.3.5, 203.0.113.9")
@@ -18,18 +16,15 @@ func TestClientIPUsesRemoteAddrNotXFF(t *testing.T) {
 	}
 }
 
-func TestClientIPTrustedHeaderOnlyWhenConfigured(t *testing.T) {
-	SetTrustedIPHeader("")
-	defer SetTrustedIPHeader("")
+// A proxy-controlled header is not honored even when set: #280 revision
+// removed the PALETTE_TRUSTED_IP_HEADER mechanism per owner decision, so the
+// bucket key is the peer address only.
+func TestClientIPNeverTrustsHeaders(t *testing.T) {
 	r := httptest.NewRequest("POST", "/api/pastes", nil)
 	r.RemoteAddr = "10.0.1.47:9999"
 	r.Header.Set("CF-Connecting-IP", "198.51.100.9")
 	if got := clientIP(r); got != "10.0.1.47" {
-		t.Fatalf("unconfigured: clientIP = %q, want peer 10.0.1.47", got)
-	}
-	SetTrustedIPHeader("CF-Connecting-IP")
-	if got := clientIP(r); got != "198.51.100.9" {
-		t.Fatalf("configured: clientIP = %q, want CF-Connecting-IP value", got)
+		t.Fatalf("clientIP = %q, want peer 10.0.1.47", got)
 	}
 }
 
@@ -37,9 +32,7 @@ func TestClientIPTrustedHeaderOnlyWhenConfigured(t *testing.T) {
 // repro was 8 creates with rotating XFF -> 6x201.
 func TestRotatingXFFDoesNotResetBucket(t *testing.T) {
 	globalLimiter = newLimiter()
-	defer SetTrustedIPHeader("")
-	SetTrustedIPHeader("")
-	s := defaultSettings(Config{}) // burst/limit defaults; any header values are ignored anyway
+	s := defaultSettings(Config{}) // burst/limit defaults; header values are ignored anyway
 	var allowed, limited int
 	for i := 0; i < 8; i++ {
 		r := httptest.NewRequest("POST", "/api/pastes", nil)

internal/api/server.go

@@ -28,10 +28,6 @@ type Config struct {
 	DBPath       string
 	MaxTextBytes int64
 	MaxItemBytes int64
-	// TrustedIPHeader optionally names a proxy-controlled client-IP header
-	// (e.g. CF-Connecting-IP behind Cloudflare) to key rate limits on. Empty
-	// (default) keys on the peer address only. See clientip.go (#280).
-	TrustedIPHeader string
 }
 
 type apiServer struct {
@@ -43,7 +39,6 @@ type apiServer struct {
 }
 
 func NewServer(st *store.Store, cfg Config, ui *web.UI, ss *settingsStore, adminKey string) *apiServer {
-	SetTrustedIPHeader(cfg.TrustedIPHeader) // #280
 	return &apiServer{store: st, cfg: cfg, ui: ui, settings: ss, adminKey: adminKey}
 }
 
@@ -501,15 +496,18 @@ func (a *apiServer) handleRaw(w http.ResponseWriter, r *http.Request) {
 		http.Error(w, "not found", 404)
 		return
 	}
-	// #221: raw view of an image paste serves the image bytes themselves as
-	// an image, not the (empty) text content.
-	if att, err := a.store.GetAttachmentForPaste(row.ID); err == nil && att != nil && isImageMime(att.Mime) {
+	// #221: raw view of a paste backed by an attachment serves the stored
+	// blob bytes with the sniffed mime, not the (empty) text content — for
+	// ALL attachment mimes (#281); /raw/{id} is the raw fetch for the file
+	// too. serveContentType still forces active-content types (html, svg,
+	// xml) to text/plain per the #34 rule below.
+	if att, err := a.store.GetAttachmentForPaste(row.ID); err == nil && att != nil {
 		blobs := a.store.Blobs()
 		if blobs != nil {
 			if blob, err := blobs.Get(row.ID + "/" + att.SHA256); err == nil {
 				defer blob.Close()
 				a.store.IncrementViews(row.ID, "", 0) // raw views always count (#49/#95)
-				w.Header().Set("Content-Type", att.Mime)
+				w.Header().Set("Content-Type", serveContentType(att.Mime))
 				w.Header().Set("X-Content-Type-Options", "nosniff")
 				w.Header().Set("Content-Length", fmt.Sprintf("%d", att.Size))
 				http.ServeContent(w, r, "", time.Unix(att.CreatedAt, 0), blob)

internal/web/static/app.css

@@ -354,10 +354,15 @@ tr:last-child td { border-bottom: none; }
 tr.row { cursor: pointer; }
 tr.row:hover td { background: var(--surface-2); }
 tr.row:hover td a.slug { color: var(--accent); }
+/* #292: highlight the paste NAME uniformly on row hover, titled or not */
+tr.row:hover td .paste-name { color: var(--accent); }
 td a.slug { font-family: var(--font-mono); font-size: 21.6px; color: var(--fg); text-decoration: none; }
+td a.url-link { font-family: inherit; font-size: inherit; color: inherit; text-decoration: none; }
+td a.url-link:hover { color: var(--accent); }
 td a.slug:hover { color: var(--accent); }
 /* PASTE column fallback for untitled pastes: plain text, identical to a titled paste. URL/ID chips keep .slug styling. */
 td a.slug.paste-name { background: none; padding: 0; border-radius: 0; font-family: inherit; font-size: inherit; color: var(--fg); }
+td a.paste-name { color: var(--fg); text-decoration: none; font-family: inherit; font-size: inherit; }
 .badge { font-size: 18.9px; border: 1px solid var(--border); color: var(--muted-fg); border-radius: var(--radius-sm); padding: 1px 8px; }
 .badge.lock { color: var(--accent); border-color: var(--accent); }
 .dim { color: var(--muted-fg); white-space: nowrap; }
@@ -528,7 +533,7 @@ td a.slug.paste-name { background: none; padding: 0; border-radius: 0; font-fami
 /* paste name under slug pill in Paste column (#43) */
 .paste-sub { font-size: 19.8px; color: var(--muted-fg); margin-top: 2px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
 .paste-sub.dim { color: var(--muted); }
-td a.slug.url-link { max-width: 100%; display: inline-block; vertical-align: middle; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; box-sizing: border-box; }
+td a.url-link { max-width: 100%; display: inline-block; vertical-align: middle; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; box-sizing: border-box; }
 td .id-link { color: var(--muted-fg); text-decoration: none; font-family: var(--font-mono); font-size: 19.8px; }
 td .id-link:hover { color: var(--accent); }
 
@@ -889,11 +894,11 @@ button[type="submit"]:focus-visible,
 .hidden { display: none; }
 .can-page { max-width: 900px; width: 100%; }
 .col-a { width: 260px; } .col-b { width: 140px; } .col-c { width: 120px; }
-.col-d { width: 96px; } .col-d2 { width: 150px; } .col-e { width: 190px; }
-.col-f { width: 100px; } .col-g { width: 190px; }
+.col-d { width: 90px; } .col-d2 { width: 150px; } .col-e { width: 150px; }
+.col-f { width: 100px; } .col-g { width: 120px; }
 /* #255: history's URL column had its own narrow width (col-f doubles as
    /mine's ID column); give it a dedicated class. */
-.col-url { width: 150px; }
+.col-url { width: 230px; }
 /* #210: /mine rows render a delete button cell that had no declared column,
    so under table-layout:fixed it overlapped the ID column. */
 .col-del { width: 64px; }

internal/web/static/history.js

@@ -6,12 +6,12 @@ const t = PaletteTable.init({
   rowHtml: it =>
     `<tr class="row" data-href="/${t.esc(it.id)}"><td>` +
     (it.title
-      ? `${t.esc(it.title)}${it.is_can ? ' <span class="badge" title="Can — bundle of items">can</span>' : ''}`
+      ? `<a class="paste-name" href="/${t.esc(it.id)}">${t.esc(it.title)}</a>${it.is_can ? ' <span class="badge" title="Can — bundle of items">can</span>' : ''}`
       : `<a class="slug paste-name" href="/${t.esc(it.id)}">${t.esc(it.id)}</a>${it.is_can ? ' <span class="badge" title="Can — bundle of items">can</span>' : ''}`) +
     `</td>` +
     `<td><span class="badge">${t.esc(it.type || it.language || 'text')}</span></td>` +
     `<td class="dim">${t.fmtSize(it.size)}</td><td class="dim">${it.view_count}</td><td class="dim" data-ts="${it.created_at}">${t.ago(it.created_at)}</td>` +
-    (it.custom_slug ? `<td><a class="slug url-link" href="/${t.esc(it.custom_slug)}">/${t.esc(it.custom_slug)}</a></td>` : `<td class="dim">none</td>`) +
+    (it.custom_slug ? `<td class="dim"><a class="url-link" href="/${t.esc(it.custom_slug)}">/${t.esc(it.custom_slug)}</a></td>` : `<td class="dim">none</td>`) +
     `<td class="dim"><a class="id-link" href="/${t.esc(it.id)}">${t.esc(it.id)}</a></td></tr>`,
   emptyFiltered: 'No pastes match your search.',
   emptyAll: 'No pastes yet. Create the first one.',

internal/web/static/jump.js

@@ -38,4 +38,14 @@
   window.addEventListener('resize', refresh);
   if (scroller !== window && scroller) scroller.addEventListener('input', refresh);
   refresh();
+  /* #282: the first evaluation can run before the layout settles (media
+     queries, web fonts, async highlighting) and under-measure the content,
+     leaving the nav hidden on long pages. Re-check once a real layout exists
+     and after load; the ResizeObserver also catches late content growth. */
+  requestAnimationFrame(function () { requestAnimationFrame(refresh); });
+  window.addEventListener('load', refresh);
+  window.setTimeout(refresh, 300);
+  if (window.ResizeObserver && scroller === window && document.body) {
+    new ResizeObserver(refresh).observe(document.body);
+  }
 })();

internal/web/static/mine.js

@@ -18,12 +18,12 @@ const t = PaletteTable.init({
   rowHtml: it =>
     `<tr class="row" data-href="/${t.esc(it.id)}"><td>` +
     (it.title
-      ? `${t.esc(it.title)}${it.is_can ? ' <span class="badge" title="Can — bundle of items">can</span>' : ''}`
+      ? `<a class="paste-name" href="/${t.esc(it.id)}">${t.esc(it.title)}</a>${it.is_can ? ' <span class="badge" title="Can — bundle of items">can</span>' : ''}`
       : `<a class="slug paste-name" href="/${t.esc(it.id)}">${t.esc(it.id)}</a>${it.is_can ? ' <span class="badge" title="Can — bundle of items">can</span>' : ''}`) +
     `</td>` +
     `<td><span class="badge">${t.esc(it.type || it.language || 'text')}</span></td>` +
     `<td class="dim">${t.fmtSize(it.size)}</td><td class="dim" data-ts="${it.created_at}">${t.ago(it.created_at)}</td>` +
-    (it.custom_slug ? `<td><a class="slug url-link" href="/${t.esc(it.custom_slug)}">/${t.esc(it.custom_slug)}</a></td>` : `<td class="dim">none</td>`) +
+    (it.custom_slug ? `<td class="dim"><a class="url-link" href="/${t.esc(it.custom_slug)}">/${t.esc(it.custom_slug)}</a></td>` : `<td class="dim">none</td>`) +
     `<td class="dim"><a class="id-link" href="/${t.esc(it.id)}">${t.esc(it.id)}</a></td>` +
     `<td><button class="btn btn-icon del" data-id="${t.esc(it.id)}" title="Delete paste" aria-label="Delete paste">&times;</button></td></tr>`,
   emptyFiltered: 'No pastes from this browser match your search.',

internal/web/static/settings.js

@@ -73,7 +73,10 @@
     });
     btn.addEventListener('click', function () {
       var dark = state().dark;
-      document.documentElement.dataset.preset = dark ? t.id + '-dark' : t.id;
+      // #294: use the generic variant resolvers - midnight is dark-first
+      // (dark preset = 'midnight', light = 'midnight-light'), so a raw
+      // t.id + '-dark' build landed on nonexistent/forced-dark presets.
+      document.documentElement.dataset.preset = dark ? darkPreset(t.id) : lightPreset(t.id);
       try { localStorage.setItem('palette-theme', t.id); } catch (e) {}
       Object.keys(cards).forEach(function (k) { cards[k].setAttribute('aria-pressed', 'false'); });
       btn.setAttribute('aria-pressed', 'true');

internal/web/templates/mine.html

@@ -8,7 +8,7 @@
   <div class="search"><input id="filter" placeholder="Search…"><span class="search-spinner" id="search-spinner"></span></div>
   <div class="float">
     <table>
-      <colgroup><col class="col-a"><col class="col-b"><col class="col-c"><col class="col-d2"><col class="col-e"><col class="col-f"><col class="col-del"></colgroup>
+      <colgroup><col class="col-a"><col class="col-b"><col class="col-c"><col class="col-d2"><col class="col-url"><col class="col-f"><col class="col-del"></colgroup>
       <thead><tr>
         <th data-sort="title" class="sortable">Paste<span class="sort-ind"></span></th>
         <th data-sort="type" class="sortable">Type<span class="sort-ind"></span></th>