config: Minor --config improvements, fixes (#4034)

* Follow symlink, only file, absolute path for -c

* Create config file only for default paths

* Skip non-file source= glob results

* Check for absolute path on XDG_CONFIG_HOME

As per spec, all non-absolute paths should be ignored.
https://specifications.freedesktop.org/basedir-spec/basedir-spec-latest.html

2 files changed, 28 insertions, 21 deletions

diff --git a/src/config/ConfigManager.cpp b/src/config/ConfigManager.cpp
index 5659667e..41248d08 100644
--- a/src/config/ConfigManager.cpp
+++ b/src/config/ConfigManager.cpp
@@ -48,12 +48,11 @@ CConfigManager::CConfigManager() {
 
 std::string CConfigManager::getConfigDir() {
     static const char* xdgConfigHome = getenv("XDG_CONFIG_HOME");
-    std::string        configPath;
-    if (!xdgConfigHome)
-        configPath = getenv("HOME") + std::string("/.config");
-    else
-        configPath = xdgConfigHome;
-    return configPath;
+
+    if (xdgConfigHome && std::filesystem::path(xdgConfigHome).is_absolute())
+        return xdgConfigHome;
+
+    return getenv("HOME") + std::string("/.config");
 }
 
 std::string CConfigManager::getMainConfigPath() {
@@ -1263,7 +1262,12 @@ void CConfigManager::handleSource(const std::string& command, const std::string&
     for (size_t i = 0; i < glob_buf->gl_pathc; i++) {
         auto value = absolutePath(glob_buf->gl_pathv[i], configCurrentPath);
 
-        if (!std::filesystem::exists(value)) {
+        if (!std::filesystem::is_regular_file(value)) {
+            if (std::filesystem::exists(value)) {
+                Debug::log(WARN, "source= skipping non-file {}", value);
+                continue;
+            }
+
             Debug::log(ERR, "source= file doesnt exist");
             parseError = "source file " + value + " doesn't exist!";
             return;
@@ -1570,20 +1574,20 @@ void CConfigManager::loadConfigLoadVars() {
     std::string mainConfigPath = getMainConfigPath();
     Debug::log(LOG, "Using config: {}", mainConfigPath);
     configPaths.push_back(mainConfigPath);
-    std::string configPath = mainConfigPath.substr(0, mainConfigPath.find_last_of('/'));
-    // find_last_of never returns npos since main_config at least has /hypr/
 
-    if (!std::filesystem::is_directory(configPath)) {
-        Debug::log(WARN, "Creating config home directory");
-        try {
-            std::filesystem::create_directories(configPath);
-        } catch (...) {
-            parseError = "Broken config file! (Could not create config directory)";
-            return;
+    if (g_pCompositor->explicitConfigPath.empty() && !std::filesystem::exists(mainConfigPath)) {
+        std::string configPath = std::filesystem::path(mainConfigPath).parent_path();
+
+        if (!std::filesystem::is_directory(configPath)) {
+            Debug::log(WARN, "Creating config home directory");
+            try {
+                std::filesystem::create_directories(configPath);
+            } catch (...) {
+                parseError = "Broken config file! (Could not create config directory)";
+                return;
+            }
         }
-    }
 
-    if (!std::filesystem::exists(mainConfigPath)) {
         Debug::log(WARN, "No config file found; attempting to generate.");
         std::ofstream ofs;
         ofs.open(mainConfigPath, std::ios::trunc);
diff --git a/src/main.cpp b/src/main.cpp
index 27a768ba..0f68c3b2 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -54,14 +54,17 @@ int main(int argc, char** argv) {
             }
             std::string next_arg = std::next(it)->c_str();
 
-            if (!std::filesystem::exists(next_arg)) {
-                std::cerr << "[ ERROR ] Config path '" << next_arg << "' doesn't exist!\n";
+            if (std::filesystem::is_symlink(next_arg))
+                next_arg = std::filesystem::read_symlink(next_arg);
+
+            if (!std::filesystem::is_regular_file(next_arg)) {
+                std::cerr << "[ ERROR ] Config file '" << next_arg << "' doesn't exist!\n";
                 help();
 
                 return 1;
             }
 
-            configPath = next_arg;
+            configPath = std::filesystem::weakly_canonical(next_arg);
             Debug::log(LOG, "User-specified config location: '{}'", configPath);
 
             it++;