GUI / httpd: misc.c - speed up status-overview (part 2)

Note: use cfe/bl nvram values if available (~95%)

tested with Asus RT-N18U / R7000, working

release/src-rt-6.x.4708/router/httpd/misc.c

@@ -254,9 +254,25 @@ static char* get_cfeversion(char *buf)
 	char s[16] = "";
 	int len = 0;
 	char *netgear = nvram_get("board_id"); /* U12HXXXXXX_NETGEAR for FT mips and arm */
+	char *cfe_version = nvram_get("cfe_version"); /* Ex.: Netgear R7000 cfe_version=v1.0.22 ; for FT mips and arm */
+	char *bl_version = nvram_get("bl_version"); /* Ex.: Asus RT-N18U bl_version=2.0.0.9 ; for FT mips and arm */
 
 	strcpy(buf, "");
 
+	/* check nvram first to speed up */
+	/* Asus */
+	if (bl_version != NULL) {
+		len = strlen(bl_version);
+		strncpy(s, bl_version, sizeof(s)-1);
+		s[sizeof(s)-1] = '\0';
+	}
+	/* Netgear */
+	else if (cfe_version != NULL) {
+		len = strlen(cfe_version);
+		strncpy(s, cfe_version, sizeof(s)-1);
+		s[sizeof(s)-1] = '\0';
+	}
+	else {
 		/* get ASUS Bootloader version */
 		if ((netgear == NULL) && ((f = popen("strings /dev/mtd0ro | grep bl_version | cut -d '=' -f2", "r")) != NULL)) {
 			if (fgets(s, 15, f) != NULL)
@@ -274,6 +290,7 @@ static char* get_cfeversion(char *buf)
 				pclose(f);
 			}
 		}
+	}
 
 	if (len == 0)
 		strcpy(buf, "--");