bump version to 1.84

.SRCINFO

@@ -1,6 +1,6 @@
 pkgbase = coolerdash
 	pkgdesc = Extends CoolerControl with a polished LCD dashboard
-	pkgver = 1.83
+	pkgver = 1.84
 	pkgrel = 1
 	url = https://github.com/damachine/coolerdash
 	install = coolerdash.install

VERSION

@@ -1 +1 @@
-1.83
+1.84

src/config.c

@@ -24,12 +24,24 @@
 #include <stdlib.h>
 #include <string.h>
 #include <unistd.h>
+#include <fcntl.h>
+#include <sys/stat.h>
 // cppcheck-suppress-end missingIncludeSystem
 
 // Include project headers
 #include "config.h"
 #include "coolercontrol.h"
 
+// Define O_NOFOLLOW if not defined (for portability)
+#ifndef O_NOFOLLOW
+#define O_NOFOLLOW 0
+#endif
+
+// Ensure fdopen is declared if not available in the environment
+#ifndef HAVE_DECL_FDOPEN
+FILE *fdopen(int fd, const char *mode);
+#endif
+
 /**
  * @brief Global logging implementation for all modules except main.c
  * @details Provides unified log output for info, status, warning and error messages.
@@ -735,12 +747,25 @@
     // Initialize config struct with zeros to ensure fallbacks work
     memset(config, 0, sizeof(Config));
 
-    // Check if file exists and is readable
-    FILE *file = fopen(path, "r");
+    // Sicheres Öffnen der Konfigurationsdatei
+    int cfd = open(path, O_RDONLY | O_NOFOLLOW);
+    FILE *file = NULL;
+    if (cfd != -1)
+    {
+        struct stat cst;
+        if (fstat(cfd, &cst) == 0 && S_ISREG(cst.st_mode))
+        {
+            file = fdopen(cfd, "r");
+        }
+        else
+        {
+            close(cfd);
+        }
+    }
     if (!file)
     {
         // File doesn't exist - use fallbacks only
-        log_message(LOG_INFO, "Config file '%s' not found, using fallback values", path);
+        log_message(LOG_INFO, "Config file '%s' not found oder nicht regulär, using fallback values", path);
         get_config_defaults(config);
         return 0; // Return success, fallbacks are valid
     }

src/main.c

@@ -87,14 +87,38 @@
         return version_buffer[0] ? version_buffer : DEFAULT_VERSION;
     }
 
-    // Try to read from VERSION file
-    FILE *fp = fopen("VERSION", "r");
+    // Try to read from VERSION file sicher
+    int vfd = open("VERSION", O_RDONLY | O_NOFOLLOW);
+    FILE *fp = NULL;
+    if (vfd != -1)
+    {
+        struct stat vst;
+        if (fstat(vfd, &vst) == 0 && S_ISREG(vst.st_mode))
+        {
+            fp = fdopen(vfd, "r");
+        }
+        else
+        {
+            close(vfd);
+        }
+    }
     if (!fp)
     {
         // Try alternative path for installed version
-        fp = fopen("/opt/coolerdash/VERSION", "r");
+        vfd = open("/opt/coolerdash/VERSION", O_RDONLY | O_NOFOLLOW);
+        if (vfd != -1)
+        {
+            struct stat vst2;
+            if (fstat(vfd, &vst2) == 0 && S_ISREG(vst2.st_mode))
+            {
+                fp = fdopen(vfd, "r");
+            }
+            else
+            {
+                close(vfd);
+            }
+        }
     }
-
     if (!fp)
     {
         log_message(LOG_WARNING, "Could not open VERSION file, using default version");
@@ -480,21 +504,32 @@
         return;
     }
 
-    // Check if shutdown image file exists
-    FILE *image_file = fopen(shutdown_image_path, "r");
-    if (image_file)
+    // Check if shutdown image file exists and is a regular file
+    int img_fd = open(shutdown_image_path, O_RDONLY | O_NOFOLLOW);
+    if (img_fd != -1)
     {
-        // Image exists, send it normally
-        fclose(image_file);
-        send_image_to_lcd(g_config_ptr, shutdown_image_path, device_uid);
-        send_image_to_lcd(g_config_ptr, shutdown_image_path, device_uid); // Send twice for better reliability
+        struct stat img_st;
+        if (fstat(img_fd, &img_st) == 0 && S_ISREG(img_st.st_mode))
+        {
+            // Send shutdown image to LCD
+            close(img_fd);
+            send_image_to_lcd(g_config_ptr, shutdown_image_path, device_uid);
+            send_image_to_lcd(g_config_ptr, shutdown_image_path, device_uid); // Send twice for better reliability
+        }
+        else
+        {
+            // Not a regular file
+            close(img_fd);
+            log_message(LOG_WARNING, "Shutdown image '%s' ist kein reguläres File oder nicht lesbar", shutdown_image_path);
+            goto shutdown_image_missing;
+        }
     }
     else
     {
-        // Image doesn't exist, create temporary config with brightness 0 to turn off LCD
-        log_message(LOG_WARNING, "Shutdown image '%s' not found, turning off LCD display", shutdown_image_path);
-
-        // Create a temporary config copy with brightness set to 0
+        // File doesn't exist or can't be opened
+        log_message(LOG_WARNING, "Shutdown image '%s' nicht gefunden oder nicht lesbar, turning off LCD display", shutdown_image_path);
+    // Fallback to turning off the display
+    shutdown_image_missing:
         Config temp_config = *g_config_ptr;
         temp_config.lcd_brightness = 0;