Add a warning message if old hccap file is detected and abort

include/interface.h

@@ -1733,6 +1733,7 @@ char *stroptitype (const u32 opti_type);
 char *strhashtype (const u32 hash_mode);
 char *strparser   (const u32 parser_status);
 
+int check_old_hccap (const char *hashfile);
 void to_hccapx_t (hashcat_ctx_t *hashcat_ctx, hccapx_t *hccapx, const u32 salt_pos, const u32 digest_pos);
 
 void wpa_essid_reuse (hashcat_ctx_t *hashcat_ctx);

src/hashes.c

@@ -477,6 +477,20 @@ int hashes_init_stage1 (hashcat_ctx_t *hashcat_ctx)
           return -1;
         }
 
+        // 392 = old hccap_t size
+
+        if ((st.st_size % 392) == 0)
+        {
+          const int rc = check_old_hccap (hashes->hashfile);
+
+          if (rc == 1)
+          {
+            event_log_error (hashcat_ctx, "%s: Old hccap file format detected! You need to update: https://hashcat.net/forum/thread-6273.html", hashes->hashfile);
+
+            return -1;
+          }
+        }
+
         hashes_avail = st.st_size / sizeof (hccapx_t);
       }
       else if (hashconfig->hash_mode == 14600)

src/interface.c

@@ -14720,6 +14720,25 @@ char *strparser (const u32 parser_status)
   return ((char *) PA_255);
 }
 
+int check_old_hccap (const char *hashfile)
+{
+  FILE *fp = fopen (hashfile, "rb");
+
+  if (fp == NULL) return -1;
+
+  u32 signature;
+
+  const int nread = fread (&signature, sizeof (u32), 1, fp);
+
+  if (nread != 1) return -1;
+
+  fclose (fp);
+
+  if (signature == HCCAPX_SIGNATURE) return 0;
+
+  return 1;
+}
+
 void to_hccapx_t (hashcat_ctx_t *hashcat_ctx, hccapx_t *hccapx, const u32 salt_pos, const u32 digest_pos)
 {
   const hashconfig_t *hashconfig = hashcat_ctx->hashconfig;