From 956b050e75202ed0911dabe735304728772b2394 Mon Sep 17 00:00:00 2001
From: Eddie Kohler <ekohler@gmail.com>
Date: Sun, 10 Sep 2023 23:55:25 -0400
Subject: [PATCH] Keynote files are so stupid.

---
 lib/mimetype.php    | 39 +++++++++++++++++++++++++++------------
 src/paperoption.php |  6 +++---
 2 files changed, 30 insertions(+), 15 deletions(-)

diff --git a/lib/mimetype.php b/lib/mimetype.php
index 525d5f21b..e41108ce6 100644
--- a/lib/mimetype.php
+++ b/lib/mimetype.php
@@ -23,6 +23,7 @@ class Mimetype {
     const FLAG_INCOMPRESSIBLE = 8;
     const FLAG_TEXTUAL = 16;
     const FLAG_REQUIRE_SNIFF = 32;
+    const FLAG_ZIPLIKE = 64;
 
     /** @var string */
     public $mimetype;
@@ -41,7 +42,7 @@ class Mimetype {
         self::PDF_TYPE =>     [".pdf", "PDF", self::FLAG_INLINE | self::FLAG_REQUIRE_SNIFF],
         self::PS_TYPE =>      [".ps", "PostScript", self::FLAG_COMPRESSIBLE],
         self::PPT_TYPE =>     [".ppt", "PowerPoint", self::FLAG_INCOMPRESSIBLE, "application/mspowerpoint", "application/powerpoint", "application/x-mspowerpoint"],
-        self::KEYNOTE_TYPE => [".key", "Keynote", self::FLAG_INCOMPRESSIBLE, "application/x-iwork-keynote-sffkey"],
+        self::KEYNOTE_TYPE => [".key", "Keynote", self::FLAG_INCOMPRESSIBLE | self::FLAG_ZIPLIKE, "application/x-iwork-keynote-sffkey"],
         "application/vnd.openxmlformats-officedocument.presentationml.presentation" =>
                               [".pptx", "PowerPoint", self::FLAG_INCOMPRESSIBLE],
         "video/mp4" =>        [".mp4", null, self::FLAG_INCOMPRESSIBLE],
@@ -165,16 +166,6 @@ static function type_with_charset($type) {
         }
     }
 
-    /** @param string|Mimetype $typea
-     * @param string|Mimetype $typeb
-     * @return bool */
-    static function type_equals($typea, $typeb) {
-        $ta = self::type($typea);
-        $tb = self::type($typeb);
-        return ($typea && $typea === $typeb)
-            || ($ta !== null && $ta === $tb);
-    }
-
     /** @param string|Mimetype $type
      * @return string */
     static function extension($type) {
@@ -198,7 +189,7 @@ static function description($type) {
         }
     }
 
-    /** @param list<string|Mimetype> $types
+    /** @param list<Mimetype> $types
      * @return string */
     static function list_description($types) {
         if (count($types) === 0) {
@@ -211,6 +202,21 @@ static function list_description($types) {
         }
     }
 
+    /** @param list<Mimetype> $types
+     * @return ?string */
+    static function list_accept($types) {
+        $mta = [];
+        foreach ($types as $mt) {
+            if ($mt->type === self::BIN_TYPE
+                || ($mt->flags & self::FLAG_ZIPLIKE) !== 0) {
+                return null;
+            } else {
+                $mta[] = $mt->mimetype;
+            }
+        }
+        return empty($mta) ? null : join(",", $mta);
+    }
+
     /** @param string|Mimetype $type
      * @return bool */
     static function disposition_inline($type) {
@@ -240,6 +246,15 @@ static function compressible($type) {
         }
     }
 
+    /** @param string|Mimetype $type
+     * @return bool */
+    function matches($type) {
+        $xt = self::type($type);
+        return $xt === $this->mimetype
+            || (($this->flags & self::FLAG_ZIPLIKE) !== 0
+                && $xt === self::ZIP_TYPE);
+    }
+
 
     /** @return list<Mimetype> */
     static function builtins() {
diff --git a/src/paperoption.php b/src/paperoption.php
index 7703ebf0e..db980ec53 100644
--- a/src/paperoption.php
+++ b/src/paperoption.php
@@ -1472,8 +1472,8 @@ function print_web_edit(PaperTable $pt, $ov, $reqov) {
         if ($doc) {
             echo ' data-docid="', $doc->paperStorageId, '"';
         }
-        if ($mimetypes) {
-            echo ' data-document-accept="', htmlspecialchars(join(",", array_map(function ($m) { return $m->mimetype; }, $mimetypes))), '"';
+        if (($accept = Mimetype::list_accept($mimetypes))) {
+            echo ' data-document-accept="', htmlspecialchars($accept), '"';
         }
         if ($this->max_size > 0) {
             echo ' data-document-max-size="', (int) $this->max_size, '"';
@@ -1529,7 +1529,7 @@ function validate_document(DocumentInfo $doc) {
             return true;
         }
         for ($i = 0; $i < count($mimetypes); ++$i) {
-            if ($mimetypes[$i]->mimetype === $doc->mimetype)
+            if ($mimetypes[$i]->matches($doc->mimetype))
                 return true;
         }
         $desc = Mimetype::list_description($mimetypes);