[common/client] platform: make filesystem access portable

client/platform/Linux/config.c

@@ -0,0 +1,60 @@
+/**
+ * Looking Glass
+ * Copyright © 2017-2026 The Looking Glass Authors
+ * https://looking-glass.io
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc., 59
+ * Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include "config_platform.h"
+
+#include "common/debug.h"
+#include "common/paths.h"
+#include "common/stringutils.h"
+
+#include <pwd.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+static bool visitJoinedPath(const char * directory, const char * filename,
+    ConfigFileVisitor visitor, void * opaque)
+{
+  char * path;
+  if (alloc_sprintf(&path, "%s/%s", directory, filename) < 0)
+  {
+    DEBUG_ERROR("out of memory");
+    return false;
+  }
+
+  const bool result = visitor(path, opaque);
+  free(path);
+  return result;
+}
+
+bool config_platformVisitDefaultFiles(
+    ConfigFileVisitor visitor, void * opaque)
+{
+  if (!visitor("/etc/looking-glass-client.ini", opaque))
+    return false;
+
+  const struct passwd * password = getpwuid(getuid());
+  if (!password)
+    DEBUG_WARN("getpwuid failed, unable to load user configuration");
+  else if (!visitJoinedPath(password->pw_dir, ".looking-glass-client.ini",
+        visitor, opaque))
+    return false;
+
+  return visitJoinedPath(lgConfigDir(), "client.ini", visitor, opaque);
+}

client/platform/Windows/config.c

@@ -0,0 +1,42 @@
+/**
+ * Looking Glass
+ * Copyright © 2017-2026 The Looking Glass Authors
+ * https://looking-glass.io
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc., 59
+ * Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include "config_platform.h"
+
+#include "common/debug.h"
+#include "common/paths.h"
+#include "common/stringutils.h"
+
+#include <stdlib.h>
+
+bool config_platformVisitDefaultFiles(
+    ConfigFileVisitor visitor, void * opaque)
+{
+  char * path;
+  if (alloc_sprintf(&path, "%s\\client.ini", lgConfigDir()) < 0)
+  {
+    DEBUG_ERROR("out of memory");
+    return false;
+  }
+
+  const bool result = visitor(path, opaque);
+  free(path);
+  return result;
+}