Introduce a way to open a configuration file from the ROMs directory using rom_fopen and switch the FDD Audio configuration reader to it.

src/floppy/fdd_audio.c

@@ -191,30 +191,9 @@ fdd_audio_log_active_profiles(void)
 void
 fdd_audio_load_profiles(void)
 {
-    char config_path[2048];
     ini_t profiles_ini;
 
-    /* Validate exe_path to prevent directory traversal attacks */
-    if (exe_path == NULL || strlen(exe_path) == 0) {
-        fdd_log("FDD Audio: Invalid exe_path\n");
-        return;
-    }
-
-    /* Check for directory traversal sequences */
-    if (strstr(exe_path, "..") != NULL) {
-        fdd_log("FDD Audio: Directory traversal detected in exe_path\n");
-        return;
-    }
-    
-    path_append_filename(config_path, exe_path, "roms/floppy/fdd_audio_profiles.cfg");
-
-    /* Additional validation of the final path */
-    if (strstr(config_path, "..") != NULL) {
-        fdd_log("FDD Audio: Directory traversal detected in config path: %s\n", config_path);
-        return;
-    }
-
-    profiles_ini = ini_read(config_path);
+    profiles_ini = ini_read_ex("roms/floppy/fdd_audio_profiles.cfg", 1);
     if (profiles_ini == NULL) {
         fdd_log("FDD Audio: Could not load profiles from %s\n", config_path);
         return;

src/include/86box/ini.h

@@ -30,8 +30,10 @@ typedef void *ini_t;
 typedef void *ini_section_t;
 
 extern ini_t ini_new(void);
+extern ini_t ini_read_ex(const char *fn, int is_rom);
 extern ini_t ini_read(const char *fn);
 extern void  ini_strip_quotes(ini_t ini);
+extern void  ini_write_ex(ini_t ini, const char *fn, int is_rom);
 extern void  ini_write(ini_t ini, const char *fn);
 extern void  ini_dump(ini_t ini);
 extern void  ini_close(ini_t ini);

src/utils/ini.c

@@ -34,6 +34,8 @@
 #define HAVE_STDARG_H
 #include <86box/86box.h>
 #include <86box/ini.h>
+#include <86box/mem.h>
+#include <86box/rom.h>
 #include <86box/plat.h>
 
 typedef struct _list_ {
@@ -360,9 +362,9 @@ ini_fgetws(wchar_t *str, int count, FILE *stream)
 }
 #endif
 
-/* Read and parse the configuration file into memory. */
+/* Read and parse the configuration file into memory, with open type selection. */
 ini_t
-ini_read(const char *fn)
+ini_read_ex(const char *fn, int is_rom)
 {
     char       sname[128];
     char       ename[128];
@@ -377,11 +379,20 @@ ini_read(const char *fn)
     list_t    *head;
 
     bom = ini_detect_bom(fn);
+
+    if (is_rom)
 #if defined(ANSI_CFG) || !defined(_WIN32)
-    fp = plat_fopen(fn, "rt");
+        fp = rom_fopen(fn, "rt");
 #else
-    fp = plat_fopen(fn, "rt, ccs=UTF-8");
+        fp = rom_fopen(fn, "rt, ccs=UTF-8");
 #endif
+    else
+#if defined(ANSI_CFG) || !defined(_WIN32)
+        fp = plat_fopen(fn, "rt");
+#else
+        fp = plat_fopen(fn, "rt, ccs=UTF-8");
+#endif
+
     if (fp == NULL)
         return NULL;
 
@@ -488,9 +499,16 @@ ini_read(const char *fn)
     return (ini_t) head;
 }
 
-/* Write the in-memory configuration to disk. */
+/* Read and parse the configuration file into memory. */
+ini_t
+ini_read(const char *fn)
+{
+    return ini_read_ex(fn, 0);
+}
+
+/* Write the in-memory configuration to disk, with open type selection. */
 void
-ini_write(ini_t ini, const char *fn)
+ini_write_ex(ini_t ini, const char *fn, int is_rom)
 {
     wchar_t    wtemp[512];
     list_t    *list = (list_t *) ini;
@@ -503,11 +521,19 @@ ini_write(ini_t ini, const char *fn)
 
     sec = (section_t *) list->next;
 
+    if (is_rom)
 #if defined(ANSI_CFG) || !defined(_WIN32)
-    fp = plat_fopen(fn, "wt");
+        fp = rom_fopen(fn, "wt");
 #else
-    fp = plat_fopen(fn, "wt, ccs=UTF-8");
+        fp = rom_fopen(fn, "wt, ccs=UTF-8");
 #endif
+    else
+#if defined(ANSI_CFG) || !defined(_WIN32)
+        fp = plat_fopen(fn, "wt");
+#else
+        fp = plat_fopen(fn, "wt, ccs=UTF-8");
+#endif
+
     if (fp == NULL)
         return;
 
@@ -543,6 +569,13 @@ ini_write(ini_t ini, const char *fn)
     (void) fclose(fp);
 }
 
+/* Write the in-memory configuration to disk. */
+void
+ini_write(ini_t ini, const char *fn)
+{
+    ini_write_ex(ini, fn, 0);
+}
+
 /* Wide-character version of "trim" */
 wchar_t *
 trim_w(wchar_t *str)