Wifi: add basic Linux support using iw

src/detection/wifi/wifi_linux.c

@@ -1,14 +1,59 @@
 #include "wifi.h"
 
 #include "common/io.h"
-#include <linux/nl80211.h>
+#include "common/processing.h"
+#include "common/properties.h"
+
 #include <net/if.h>
 
-static const char* detectInf(uint32_t ifIndex, FFWifiResult* wifi)
+static const char* detectInf(char* ifName, FFWifiResult* wifi)
 {
-    //TODO: play with netlink
-    FF_UNUSED(ifIndex, wifi);
-    return "Unimplemented";
+    const char* error = NULL;
+    FF_STRBUF_AUTO_DESTROY output;
+    ffStrbufInit(&output);
+    if((error = ffProcessAppendStdOut(&output, (char* const[]){
+        "iw",
+        "dev",
+        ifName,
+        "link",
+        NULL
+    })))
+        return error;
+
+    if(output.length == 0)
+        return "iw command execution failed";
+
+    if(!ffParsePropLines(output.chars, "Connected to ", &wifi->conn.macAddress))
+    {
+        ffStrbufAppendS(&wifi->conn.status, "Disconnected");
+        return NULL;
+    }
+
+    FF_STRBUF_AUTO_DESTROY temp;
+    ffStrbufInit(&temp);
+
+    ffStrbufAppendS(&wifi->conn.status, "Connected");
+    ffStrbufSubstrBefore(&wifi->conn.macAddress, ' ');
+    ffParsePropLines(output.chars, "SSID: ", &wifi->conn.ssid);
+
+    if(ffParsePropLines(output.chars, "signal: ", &temp))
+        wifi->conn.signalQuality = ffStrbufToDouble(&temp);
+
+    if(ffParsePropLines(output.chars, "tx bitrate: ", &temp))
+    {
+        if(ffStrbufContainS(&temp, " HE-MCS "))
+            ffStrbufAppendS(&wifi->conn.phyType, "802.11ax (Wi-Fi 6)");
+        else if(ffStrbufContainS(&temp, " VHT-MCS "))
+            ffStrbufAppendS(&wifi->conn.phyType, "802.11ac (Wi-Fi 5)");
+        else if(ffStrbufContainS(&temp, " MCS "))
+            ffStrbufAppendS(&wifi->conn.phyType, "802.11n (Wi-Fi 4)");
+        else
+            ffStrbufAppendS(&wifi->conn.phyType, "802.11a/b/g");
+    }
+
+    wifi->security.enabled = true; //FIXME: Unable to find this info. Set it true so that fastfetch won't print `insecure`
+
+    return NULL;
 }
 
 const char* ffDetectWifi(const FFinstance* instance, FFlist* result)
@@ -46,10 +91,7 @@ const char* ffDetectWifi(const FFinstance* instance, FFlist* result)
         if(!ffAppendFileBuffer(path.chars, &item->inf.status) || !ffStrbufEqualS(&item->inf.status, "up"))
             continue;
 
-        ffStrbufSetF(&path, "/sys/class/net/%s/address", i->if_name);
-        ffAppendFileBuffer(path.chars, &item->conn.macAddress);
-
-        detectInf(i->if_index, item);
+        detectInf(i->if_name, item);
     }
     if_freenameindex(infs);
     ffStrbufDestroy(&path);

src/modules/wifi.c

@@ -7,7 +7,7 @@
 
 void ffPrintWifi(FFinstance* instance)
 {
-    FFlist result;
+    FF_LIST_AUTO_DESTROY result;
     ffListInit(&result, sizeof(FFWifiResult));
 
     const char* error = ffDetectWifi(instance, &result);