From b2292e770ef96c8abe8cc7134e8defb0b49e902f Mon Sep 17 00:00:00 2001
From: Michael Stapelberg <michael@stapelberg.de>
Date: Thu, 1 Oct 2009 17:43:32 +0200
Subject: [PATCH] Implement getting the wireless ESSID

This adds a dependency for libiw
---
 Makefile                |  1 +
 debian/control          |  2 +-
 src/get_wireless_info.c | 23 +++++++++++++++++++++--
 3 files changed, 23 insertions(+), 3 deletions(-)

diff --git a/Makefile b/Makefile
index b894762..fda8438 100644
--- a/Makefile
+++ b/Makefile
@@ -10,6 +10,7 @@ VERSION=$(shell git describe --tags --abbrev=0)
 ifeq ($(shell uname),Linux)
 CFLAGS+=-DLINUX
 CFLAGS+=-D_GNU_SOURCE
+LDFLAGS+=-liw
 endif
 
 ifeq ($(shell uname),GNU/kFreeBSD)
diff --git a/debian/control b/debian/control
index 2591831..76971c0 100644
--- a/debian/control
+++ b/debian/control
@@ -3,7 +3,7 @@ Section: utils
 Priority: extra
 Maintainer: Michael Stapelberg <michael@stapelberg.de>
 DM-Upload-Allowed: yes
-Build-Depends: debhelper (>= 5)
+Build-Depends: debhelper (>= 5), libiw-dev
 Standards-Version: 3.8.2
 Homepage: http://i3.zekjur.net/i3status
 
diff --git a/src/get_wireless_info.c b/src/get_wireless_info.c
index 2cdcb8c..77bb995 100644
--- a/src/get_wireless_info.c
+++ b/src/get_wireless_info.c
@@ -4,9 +4,28 @@
 #include <string.h>
 #include <ctype.h>
 #include <limits.h>
+#include <iwlib.h>
 
 #include "i3status.h"
 
+const char *get_wireless_essid() {
+        static char part[512];
+#ifdef LINUX
+        int skfd;
+        if ((skfd = iw_sockets_open()) < 0) {
+                perror("socket");
+                exit(-1);
+        }
+        struct wireless_config cfg;
+        if (iw_get_basic_config(skfd, wlan_interface, &cfg) >= 0)
+                snprintf(part, sizeof(part), "%s", cfg.essid);
+        else part[0] = '\0';
+#else
+        part[0] = '\0';
+#endif
+        return part;
+}
+
 /*
  * Just parses /proc/net/wireless looking for lines beginning with
  * wlan_interface, extracting the quality of the link and adding the
@@ -34,8 +53,8 @@ const char *get_wireless_info() {
                         continue;
                 if ((quality == UCHAR_MAX) || (quality == 0)) {
                         (void)snprintf(part, sizeof(part), "%sW: down%s", color("#FF0000"), endcolor());
-                } else (void)snprintf(part, sizeof(part), "%sW: (%03d%%) %s%s",
-                                color("#00FF00"), quality, get_ip_addr(wlan_interface), endcolor());
+                } else (void)snprintf(part, sizeof(part), "%sW: (%03d%% at %s) %s%s",
+                                color("#00FF00"), quality, get_wireless_essid(), get_ip_addr(wlan_interface), endcolor());
                 return part;
         }
 
-- 
2.39.5