--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mupdf-source/thirdparty/curl/src/tool_homedir.c	Mon Sep 15 11:44:09 2025 +0200
@@ -0,0 +1,95 @@
+/***************************************************************************
+ *                                  _   _ ____  _
+ *  Project                     ___| | | |  _ \| |
+ *                             / __| | | | |_) | |
+ *                            | (__| |_| |  _ <| |___
+ *                             \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) 1998 - 2016, Daniel Stenberg, <daniel@haxx.se>, et al.
+ *
+ * This software is licensed as described in the file COPYING, which
+ * you should have received as part of this distribution. The terms
+ * are also available at https://curl.haxx.se/docs/copyright.html.
+ *
+ * You may opt to use, copy, modify, merge, publish, distribute and/or sell
+ * copies of the Software, and permit persons to whom the Software is
+ * furnished to do so, under the terms of the COPYING file.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ***************************************************************************/
+#include "tool_setup.h"
+
+#ifdef HAVE_PWD_H
+#  include <pwd.h>
+#endif
+
+#include "tool_homedir.h"
+
+#include "memdebug.h" /* keep this as LAST include */
+
+static char *GetEnv(const char *variable, char do_expand)
+{
+  char *env = NULL;
+#ifdef WIN32
+  char  buf1[1024], buf2[1024];
+  DWORD rc;
+
+  /* Don't use getenv(); it doesn't find variable added after program was
+   * started. Don't accept truncated results (i.e. rc >= sizeof(buf1)).  */
+
+  rc = GetEnvironmentVariableA(variable, buf1, sizeof(buf1));
+  if(rc > 0 && rc < sizeof(buf1)) {
+    env = buf1;
+    variable = buf1;
+  }
+  if(do_expand && strchr(variable, '%')) {
+    /* buf2 == variable if not expanded */
+    rc = ExpandEnvironmentStringsA(variable, buf2, sizeof(buf2));
+    if(rc > 0 && rc < sizeof(buf2) &&
+       !strchr(buf2, '%'))    /* no vars still unexpanded */
+      env = buf2;
+  }
+#else
+  (void)do_expand;
+  /* no length control */
+  env = getenv(variable);
+#endif
+  return (env && env[0]) ? strdup(env) : NULL;
+}
+
+/* return the home directory of the current user as an allocated string */
+char *homedir(void)
+{
+  char *home;
+
+  home = GetEnv("CURL_HOME", FALSE);
+  if(home)
+    return home;
+
+  home = GetEnv("HOME", FALSE);
+  if(home)
+    return home;
+
+#if defined(HAVE_GETPWUID) && defined(HAVE_GETEUID)
+ {
+   struct passwd *pw = getpwuid(geteuid());
+
+   if(pw) {
+     home = pw->pw_dir;
+     if(home && home[0])
+       home = strdup(home);
+     else
+       home = NULL;
+   }
+ }
+#endif /* PWD-stuff */
+#ifdef WIN32
+  home = GetEnv("APPDATA", TRUE);
+  if(!home)
+    home = GetEnv("%USERPROFILE%\\Application Data", TRUE); /* Normally only
+                                                               on Win-2K/XP */
+#endif /* WIN32 */
+  return home;
+}