From 29e9a99f065137481dcab887971dae7e4a8c3e21 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Fernando=20Tarl=C3=A1=20Cardoso=20Lemos?=
 <fernandotcl@gmail.com>
Date: Sun, 20 Jun 2010 15:05:33 -0300
Subject: [PATCH] Take into account the wireless quality maximum.

---
 src/print_wireless_info.c | 63 ++++++++++++++++++++++++++++++---------
 1 file changed, 49 insertions(+), 14 deletions(-)

diff --git a/src/print_wireless_info.c b/src/print_wireless_info.c
index 968ff66..e5d38fb 100644
--- a/src/print_wireless_info.c
+++ b/src/print_wireless_info.c
@@ -11,23 +11,50 @@
 
 #include "i3status.h"
 
-static const char *get_wireless_essid(const char *interface) {
-        static char part[512];
 #ifdef LINUX
-        int skfd;
-        if ((skfd = iw_sockets_open()) < 0) {
-                perror("socket");
-                exit(-1);
+static int skfd = -1;
+
+static int open_skfd() {
+    if (skfd == -1) {
+        skfd = iw_sockets_open();
+        if (skfd < 0) {
+            perror("iw_sockets_open");
+            return 0;
         }
-        struct wireless_config wcfg;
+    }
+    return -1;
+}
+
+static void close_skfd() {
+    if (skfd != -1) {
+        close(skfd);
+        skfd = -1;
+    }
+}
+#endif
+
+const char *get_wireless_essid(const char *interface) {
+    static char part[512];
+    part[0] = '\0';
+#ifdef LINUX
+    if (open_skfd()) {
+        wireless_config wcfg;
         if (iw_get_basic_config(skfd, interface, &wcfg) >= 0)
-                snprintf(part, sizeof(part), "%s", wcfg.essid);
-        else part[0] = '\0';
-        (void)close(skfd);
-#else
-        part[0] = '\0';
+            snprintf(part, sizeof(part), "%s", wcfg.essid);
+    }
 #endif
-        return part;
+    return part;
+}
+
+int get_wireless_quality_max(const char *interface) {
+#ifdef LINUX
+    if (open_skfd()) {
+        iwrange range;
+        if (iw_get_range_info(skfd, interface, &range) >= 0)
+            return range.max_qual.qual;
+    }
+#endif
+    return 0;
 }
 
 /*
@@ -72,7 +99,11 @@ void print_wireless_info(const char *interface, const char *format_up, const cha
                 }
 
                 if (BEGINS_WITH(walk+1, "quality")) {
-                        (void)printf("%03d%%", quality);
+                        int max_qual = get_wireless_quality_max(interface);
+                        if (max_qual && max_qual >= quality)
+                                printf("%d/%d", quality, max_qual);
+                        else
+                                printf("%d", quality);
                         walk += strlen("quality");
                 }
 
@@ -90,5 +121,9 @@ void print_wireless_info(const char *interface, const char *format_up, const cha
                 }
         }
 
+#ifdef LINUX
+        close_skfd();
+#endif
+
         (void)printf("%s", endcolor());
 }
-- 
2.39.5