From: sgunderson@bigfoot.com <>
Date: Sat, 10 Feb 2007 00:39:46 +0000 (+0100)
Subject: Add a battery meter.
X-Git-Url: https://git.sesse.net/?p=wardrive;a=commitdiff_plain;h=2b5553d4eaca51f00c8cad937534fd7747e9fc13

Add a battery meter.
---

diff --git a/bt-remote.c b/bt-remote.c
index 359648e..b161bc8 100644
--- a/bt-remote.c
+++ b/bt-remote.c
@@ -1,4 +1,5 @@
 #include <stdio.h>
+#include <string.h>
 #include <stdlib.h>
 #include <unistd.h>
 #include <sys/types.h>
@@ -8,7 +9,119 @@
 #include <sys/ioctl.h>
 #include <netinet/in.h>
 #include <arpa/inet.h>
-			
+#include <sys/types.h>
+#include <dirent.h>
+    
+unsigned int use_acpi;
+unsigned int monitor_bat;
+unsigned int bat_percentage;
+unsigned int bat_time;
+unsigned int bat_available;
+unsigned int bat_ac;
+unsigned int bat_charging;
+unsigned int bat_full_capacity[3];  // I doubt a machine has more than 3 batteries...
+
+void update_battery_time()
+{
+	DIR *batteries, *ac_adapters;
+	struct dirent *this_battery, *this_adapter;
+	FILE *acpi;
+	char battery_state[PATH_MAX];
+	int rate = 1, remain = 0, current = 0;
+	static int total_remain = 0, total_cap = 0;
+	int batno = 0;
+	const int info_res = 5;
+	static int info_timer = 0;
+	char buf[256];
+
+	ac_adapters = opendir("/proc/acpi/ac_adapter");
+
+	while (ac_adapters != NULL && ((info_timer % info_res) == 0) && 
+			((this_adapter = readdir(ac_adapters)) != NULL)) {
+		if (this_adapter->d_name[0] == '.')
+			continue;
+		// safe overloaded use of battery_state path var
+		snprintf(battery_state, sizeof(battery_state), 
+				"/proc/acpi/ac_adapter/%s/state", this_adapter->d_name);
+		if ((acpi = fopen(battery_state, "r")) == NULL)
+			continue;
+		if (acpi != NULL) {
+			while(fgets(buf, 128, acpi)) {
+				if (strstr(buf, "on-line") != NULL)
+					bat_ac = 1;
+				else
+					bat_ac = 0;
+			}
+			fclose(acpi);
+		}
+	}
+
+	if (ac_adapters != NULL)
+		closedir(ac_adapters);
+
+	batteries = opendir("/proc/acpi/battery");
+
+	if (batteries == NULL)
+		bat_available = 0;
+	else
+		bat_available = 1;
+
+	if (!bat_available || ((info_timer % info_res) == 0)) {
+		bat_percentage = 0;
+		bat_time = 0;
+		bat_charging = 0;
+		total_remain = total_cap = 0;
+	}
+
+	while (batteries != NULL && ((info_timer % info_res) == 0) && 
+			((this_battery = readdir(batteries)) != NULL)) {
+		if (this_battery->d_name[0] == '.')
+			continue;
+		snprintf(battery_state, sizeof(battery_state), 
+				"/proc/acpi/battery/%s/state", this_battery->d_name);
+		if ((acpi = fopen(battery_state, "r")) == NULL)
+			continue;
+		while (fgets(buf, 128, acpi))
+		{
+			if (strncmp(buf, "present:", 8 ) == 0)
+			{
+				// No information for this battery
+				if (strstr(buf, "no" ))
+					continue;
+			}
+			else if (strncmp(buf, "charging state:", 15) == 0)
+			{
+				// the space makes it different than discharging
+				if (strstr(buf, " charging" ))
+					bat_charging = 1;
+			}
+			else if (strncmp(buf, "present rate:", 13) == 0)
+				rate = atoi(buf + 25);
+			else if (strncmp(buf, "remaining capacity:", 19) == 0)
+			{
+				remain = atoi(buf + 25);
+				total_remain += remain;
+			}
+			else if (strncmp(buf, "present voltage:", 17) == 0)
+				current = atoi(buf + 25);
+		}
+		total_cap += bat_full_capacity[batno];
+		fclose(acpi);
+		if (bat_charging)
+			bat_time += (((float)(bat_full_capacity[batno] - remain) / 
+						rate) * 3600);
+		else
+			bat_time += (((float)(remain) / rate) * 3600);
+		batno++;
+	}
+	if (total_cap > 0)
+		bat_percentage = ((float)(total_remain) / total_cap) * 100;
+	info_timer++;
+
+	if (batteries != NULL)
+		closedir(batteries);
+}
+
 int parse_packet(unsigned char *buf, unsigned bytes, int sock)
 {
 	char *ptr;
@@ -25,15 +138,22 @@ int parse_packet(unsigned char *buf, unsigned bytes, int sock)
 			} else {
 				if (strcmp(bssid, "00:0D:54:A0:27:7F") == 0) {
 					static int last_crypted = 0;
-					char str1[64], str2[64], str3[64], str4[64];
+					char str1[64], str2[64], str3[64], str4[64], str5[64], str6[64];
 					short len;
 					sprintf(str1, "Crypted: %d", crypted);
 					sprintf(str2, "Weak IVs: %d", weak);
 					sprintf(str3, "Signal level: %d dB", signal);
 					sprintf(str4, "Noise level: %d dB", noise);
+					sprintf(str5, "");
+
+					update_battery_time();
+					if (bat_ac)
+						sprintf(str6, "On AC power");
+					else
+						sprintf(str6, "Battery left: %uh%um", bat_time / 3600, (bat_time / 60) % 60);
 					
 					write(sock, "\000\001", 2);
-					len = htons(2 * 4 + strlen(str1) + strlen(str2) + strlen(str3) + strlen(str4));
+					len = htons(2 * 6 + strlen(str1) + strlen(str2) + strlen(str3) + strlen(str4) + strlen(str5) + strlen(str6));
 					write(sock, (char*)&len, 2);
 					
 					len = htons(strlen(str1));
@@ -52,6 +172,14 @@ int parse_packet(unsigned char *buf, unsigned bytes, int sock)
 					write(sock, (char*)&len, 2);
 					write(sock, str4, strlen(str4));
 				
+					len = htons(strlen(str5));
+					write(sock, (char*)&len, 2);
+					write(sock, str5, strlen(str5));
+				
+					len = htons(strlen(str6));
+					write(sock, (char*)&len, 2);
+					write(sock, str6, strlen(str6));
+				
 					// vibrate 250ms for every 10k packets
 					if (crypted/10000 != last_crypted/10000) {
 						write(sock, "\000\016\000\002\000\372", 6);