1 files changed, 99 insertions, 0 deletions
diff --git a/sfx2/source/appl/flatpak.cxx b/sfx2/source/appl/flatpak.cxx
new file mode 100644
index 0000000000..c6edf6f232
--- /dev/null
+++ b/sfx2/source/appl/flatpak.cxx
@@ -0,0 +1,99 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#include <sal/config.h>
+
+#include <cassert>
+#include <cstdlib>
+#include <cstring>
+
+#include <osl/file.hxx>
+#include <osl/thread.h>
+#include <rtl/textcvt.h>
+#include <rtl/ustring.h>
+#include <rtl/ustring.hxx>
+#include <sal/log.hxx>
+#include <sfx2/flatpak.hxx>
+#include <tools/debug.hxx>
+#include <unotools/tempfile.hxx>
+#include <unotools/ucbhelper.hxx>
+
+bool flatpak::isFlatpak() {
+    static auto const flatpak = [] { return std::getenv("LIBO_FLATPAK") != nullptr; }();
+    return flatpak;
+}
+
+namespace {
+
+// Must only be accessed with SolarMutex locked:
+struct {
+    bool created = false;
+    OUString url;
+} temporaryHtmlDirectoryStatus;
+
+}
+
+bool flatpak::createTemporaryHtmlDirectory(OUString ** url) {
+    assert(url != nullptr);
+    DBG_TESTSOLARMUTEX();
+    if (!temporaryHtmlDirectoryStatus.created) {
+        // coverity[tainted_return_value] - we trust the contents of this variable
+        auto const env = std::getenv("XDG_CACHE_HOME");
+        if (env == nullptr) {
+            SAL_WARN("sfx.appl", "LIBO_FLATPAK mode but unset XDG_CACHE_HOME");
+            return false;
+        }
+        OUString path;
+        if (!rtl_convertStringToUString(
+                &path.pData, env, std::strlen(env), osl_getThreadTextEncoding(),
+                (RTL_TEXTTOUNICODE_FLAGS_UNDEFINED_ERROR | RTL_TEXTTOUNICODE_FLAGS_MBUNDEFINED_ERROR
+                 | RTL_TEXTTOUNICODE_FLAGS_INVALID_ERROR)))
+        {
+            SAL_WARN(
+                "sfx.appl",
+                "LIBO_FLATPAK mode failure converting XDG_CACHE_HOME \"" << env << "\" encoding");
+            return false;
+        }
+        OUString parent;
+        auto const err = osl::FileBase::getFileURLFromSystemPath(path, parent);
+        if (err != osl::FileBase::E_None) {
+            SAL_WARN(
+                "sfx.appl",
+                "LIBO_FLATPAK mode failure converting XDG_CACHE_HOME \"" << path << "\" to URL: "
+                    << err);
+            return false;
+        }
+        if (!parent.endsWith("/")) {
+            parent += "/";
+        }
+        temporaryHtmlDirectoryStatus.url = utl::CreateTempURL(&parent, true);
+        if (temporaryHtmlDirectoryStatus.url.isEmpty()) {
+            SAL_WARN(
+                "sfx.appl", "LIBO_FLATPAK mode failure creating temp dir at <" << parent << ">");
+            return false;
+        }
+        temporaryHtmlDirectoryStatus.created = true;
+    }
+    *url = &temporaryHtmlDirectoryStatus.url;
+    return true;
+}
+
+void flatpak::removeTemporaryHtmlDirectory() {
+    DBG_TESTSOLARMUTEX();
+    if (temporaryHtmlDirectoryStatus.created) {
+        if (!utl::UCBContentHelper::Kill(temporaryHtmlDirectoryStatus.url)) {
+            SAL_INFO(
+                "sfx.appl",
+                "LIBO_FLATPAK mode failure removing directory <"
+                    << temporaryHtmlDirectoryStatus.url << ">");
+        }
+    }
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab cinoptions=b1,g0,N-s cinkeys+=0=break: */