]> git.sur5r.net Git - i3/i3status/blobdiff - wmiistatus.c
Add forgotten file
[i3/i3status] / wmiistatus.c
index 44d13a479c644b05d16f7c1b88f582300fc3e721..c0a1fe38bb5f87acb8fb458d5d5576c20c7106d0 100644 (file)
@@ -2,7 +2,7 @@
  * Generates a status line for use with wmii or other minimal window managers
  *
  *
- * Copyright (c) 2008 Michael Stapelberg and contributors
+ * Copyright (c) 2008-2009 Michael Stapelberg and contributors
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without modification,
@@ -41,6 +41,7 @@
 #include <stdarg.h>
 #include <unistd.h>
 #include <stdlib.h>
+#include <limits.h>
 #include <ctype.h>
 #include <net/if.h>
 #include <sys/ioctl.h>
 #include <arpa/inet.h>
 #include <glob.h>
 #include <dirent.h>
+#include <getopt.h>
+
+#include "queue.h"
+
+#ifdef LINUX
+#include <linux/ethtool.h>
+#include <linux/sockios.h>
+#else
+/* TODO: correctly check for *BSD */
+#include <sys/param.h>
+#include <sys/sysctl.h>
+#include <sys/resource.h>
+#endif
 
 #include "wmiistatus.h"
-#include "config.h"
 
+#define BAR "^fg(#333333)^p(5;-2)^ro(2)^p()^fg()^p(5)"
+
+struct battery {
+       const char *path;
+       SIMPLEQ_ENTRY(battery) batteries;
+};
+
+SIMPLEQ_HEAD(battery_head, battery) batteries;
+
+/* socket file descriptor for general purposes */
+static int general_socket;
+
+static const char *wlan_interface;
+static const char *eth_interface;
+static char *wmii_path;
+static const char *time_format;
+static const char *battery_path;
+static bool use_colors;
+static bool get_ethspeed;
+static const char *wmii_normcolors = "#222222 #333333";
+static char order[MAX_ORDER][2];
+static const char **run_watches;
+static unsigned int num_run_watches;
+static unsigned int interval = 1;
+
+/*
+ * This function just concats two strings in place, it should only be used
+ * for concatting order to the name of a file or concatting color codes.
+ * Otherwise, the buffer size would have to be increased.
+ *
+ */
+static char *concat(const char *str1, const char *str2) {
+       static char concatbuf[32];
+       (void)snprintf(concatbuf, sizeof(concatbuf), "%s%s", str1, str2);
+       return concatbuf;
+}
+
+/*
+ * Returns the correct color format for dzen (^fg(color)) or wmii (color <normcolors>)
+ *
+ */
+static char *color(const char *colorstr) {
+       static char colorbuf[32];
+#ifdef DZEN
+       (void)snprintf(colorbuf, sizeof(colorbuf), "^fg(%s)", colorstr);
+#else
+       (void)snprintf(colorbuf, sizeof(colorbuf), "%s %s ", colorstr, wmii_normcolors);
+#endif
+       return colorbuf;
+}
+
+/*
+ * Cleans wmii's /rbar directory by deleting all regular files
+ *
+ */
 static void cleanup_rbar_dir() {
+#ifdef DZEN
+       return;
+#endif
        struct dirent *ent;
        DIR *dir;
        char pathbuf[strlen(wmii_path)+256+1];
 
        if ((dir = opendir(wmii_path)) == NULL)
-               exit(-3);
+               exit(EXIT_FAILURE);
 
        while ((ent = readdir(dir)) != NULL) {
                if (ent->d_type == DT_REG) {
-                       sprintf(pathbuf, "%s%s", wmii_path, ent->d_name);
-                       unlink(pathbuf);
+                       (void)snprintf(pathbuf, sizeof(pathbuf), "%s%s", wmii_path, ent->d_name);
+                       if (unlink(pathbuf) == -1)
+                               exit(EXIT_FAILURE);
                }
        }
 
-       closedir(dir);
+       (void)closedir(dir);
 }
 
+/*
+ * Creates the specified file in wmii's /rbar directory with
+ * correct modes and initializes colors if colormode is enabled
+ *
+ */
 static void create_file(const char *name) {
+#ifdef DZEN
+       return;
+#endif
        char pathbuf[strlen(wmii_path)+256+1];
+       int fd;
+       int flags = O_CREAT | O_WRONLY;
+       struct stat statbuf;
 
-       sprintf(pathbuf, "%s%s", wmii_path, name);
-       int fd = creat(pathbuf, S_IRUSR | S_IWUSR);
-       if (fd < 0)
-               exit(-4);
-#ifdef USE_COLORS
-       write(fd, "#888888 " WMII_NORMCOLORS, strlen("#888888 " WMII_NORMCOLORS));
+       (void)snprintf(pathbuf, sizeof(pathbuf), "%s%s", wmii_path, name);
+
+       /* Overwrite file's contents if it exists */
+       if (stat(pathbuf, &statbuf) >= 0)
+               flags |= O_TRUNC;
+
+       if ((fd = open(pathbuf, flags, S_IRUSR | S_IWUSR)) < 0)
+               exit(EXIT_FAILURE);
+       if (use_colors) {
+               char *tmp = color("#888888");
+               if (write(fd, tmp, strlen(tmp)) != (ssize_t)strlen(tmp))
+                       exit(EXIT_FAILURE);
+       }
+       (void)close(fd);
+}
+
+/*
+ * Waits until wmii_path/rbar exists (= the filesystem gets mounted),
+ * cleans up all files and creates the needed files
+ *
+ */
+static void setup(void) {
+       unsigned int i;
+       char pathbuf[512];
+
+#ifndef DZEN
+       struct stat statbuf;
+       /* Wait until wmii_path/rbar exists */
+       for (; stat(wmii_path, &statbuf) < 0; sleep(interval));
 #endif
-       close(fd);
+
+       cleanup_rbar_dir();
+       if (wlan_interface)
+               create_file(concat(order[ORDER_WLAN],"wlan"));
+       if (eth_interface)
+               create_file(concat(order[ORDER_ETH],"eth"));
+       if (battery_path)
+               create_file(concat(order[ORDER_BATTERY],"battery"));
+       create_file(concat(order[ORDER_LOAD],"load"));
+       if (time_format)
+               create_file(concat(order[ORDER_TIME],"time"));
+       for (i = 0; i < num_run_watches; i += 2) {
+               snprintf(pathbuf, sizeof(pathbuf), "%s%s", order[ORDER_RUN], run_watches[i]);
+               create_file(pathbuf);
+       }
 }
 
-static void write_to_statusbar(const char *name, const char *message) {
+/*
+ * Writes the given message in the corresponding file in wmii's /rbar directory
+ *
+ */
+static void write_to_statusbar(const char *name, const char *message, bool final_entry) {
+#ifdef DZEN
+       if (final_entry) {
+               (void)printf("%s^p(6)\n", message);
+               fflush(stdout);
+               return;
+       }
+       (void)printf("%s" BAR, message);
+       return;
+#endif
+
        char pathbuf[strlen(wmii_path)+256+1];
+       int fd;
 
-       sprintf(pathbuf, "%s%s", wmii_path, name);
-       int fd = open(pathbuf, O_RDWR);
-       if (fd == -1)
-               exit(-2);
-       write(fd, message, strlen(message));
-       close(fd);
+       (void)snprintf(pathbuf, sizeof(pathbuf), "%s%s", wmii_path, name);
+       if ((fd = open(pathbuf, O_RDWR)) == -1) {
+               /* Try to re-setup stuff and just continue */
+               setup();
+               return;
+       }
+       if (write(fd, message, strlen(message)) != (ssize_t)strlen(message))
+               exit(EXIT_FAILURE);
+       (void)close(fd);
 }
 
+/*
+ * Writes an errormessage to statusbar
+ *
+ */
 static void write_error_to_statusbar(const char *message) {
        cleanup_rbar_dir();
-       write_to_statusbar("error", message);
+       create_file("error");
+       write_to_statusbar("error", message, true);
 }
 
 /*
  * Write errormessage to statusbar and exit
  *
  */
-static void die(const char *fmt, ...) {
-       char buffer[512];
-       va_list ap;
-       va_start(ap, fmt);
-       vsprintf(buffer, fmt, ap);
-       va_end(ap);
-
-       write_error_to_statusbar(buffer);
-       exit(-1);
+void die(const char *fmt, ...) {
+       if (wmii_path != NULL) {
+               char buffer[512];
+               va_list ap;
+               va_start(ap, fmt);
+               (void)vsnprintf(buffer, sizeof(buffer), fmt, ap);
+               va_end(ap);
+
+               write_error_to_statusbar(buffer);
+       }
+       exit(EXIT_FAILURE);
 }
 
+/*
+ * Skip the given character for exactly 'amount' times, returns
+ * a pointer to the first non-'character' character in 'input'.
+ *
+ */
 static char *skip_character(char *input, char character, int amount) {
        char *walk;
-       int len = strlen(input),
-           blanks = 0;
+       size_t len = strlen(input);
+       int blanks = 0;
 
-       for (walk = input; ((walk - input) < len) && (blanks < amount); walk++)
+       for (walk = input; ((size_t)(walk - input) < len) && (blanks < amount); walk++)
                if (*walk == character)
                        blanks++;
 
@@ -128,28 +278,33 @@ static char *skip_character(char *input, char character, int amount) {
 }
 
 /*
- * Get battery information from /sys. Note that it uses the design capacity to calculate the percentage,
- * not the full capacity.
+ * Get battery information from /sys. Note that it uses the design capacity to
+ * calculate the percentage, not the last full capacity, so you can see how
+ * worn off your battery is.
  *
  */
-static char *get_battery_info() {
+static char *get_battery_info(const char *path) {
        char buf[1024];
        static char part[512];
-       char *walk, *last = buf;
-       int fd = open(battery, O_RDONLY);
-       if (fd == -1)
-               die("Could not open %s", battery);
+       char *walk, *last;
+       int fd;
        int full_design = -1,
            remaining = -1,
            present_rate = -1;
        charging_status_t status = CS_DISCHARGING;
-       memset(part, '\0', sizeof(part));
-       read(fd, buf, sizeof(buf));
-       for (walk = buf; (walk-buf) < 1024; walk++)
+
+       if ((fd = open(path, O_RDONLY)) == -1)
+               return "No battery found";
+
+       memset(part, 0, sizeof(part));
+       (void)read(fd, buf, sizeof(buf));
+       for (walk = buf, last = buf; (walk-buf) < 1024; walk++)
                if (*walk == '=') {
-                       if (BEGINS_WITH(last, "POWER_SUPPLY_ENERGY_FULL_DESIGN"))
+                       if (BEGINS_WITH(last, "POWER_SUPPLY_ENERGY_FULL_DESIGN") ||
+                           BEGINS_WITH(last, "POWER_SUPPLY_CHARGE_FULL_DESIGN"))
                                full_design = atoi(walk+1);
-                       else if (BEGINS_WITH(last, "POWER_SUPPLY_ENERGY_NOW"))
+                       else if (BEGINS_WITH(last, "POWER_SUPPLY_ENERGY_NOW") ||
+                                BEGINS_WITH(last, "POWER_SUPPLY_CHARGE_NOW"))
                                remaining = atoi(walk+1);
                        else if (BEGINS_WITH(last, "POWER_SUPPLY_CURRENT_NOW"))
                                present_rate = atoi(walk+1);
@@ -159,205 +314,382 @@ static char *get_battery_info() {
                                status = CS_FULL;
                } else if (*walk == '\n')
                        last = walk+1;
-       close(fd);
+       (void)close(fd);
 
-       if ((full_design != -1) && (remaining != -1) && (present_rate != -1)) {
-               float remaining_time, perc;
+       if ((full_design == 1) || (remaining == -1))
+               return part;
+
+       if (present_rate > 0) {
+               float remaining_time;
+               int seconds, hours, minutes;
                if (status == CS_CHARGING)
                        remaining_time = ((float)full_design - (float)remaining) / (float)present_rate;
                else if (status == CS_DISCHARGING)
                        remaining_time = ((float)remaining / (float)present_rate);
-               else {
-                       snprintf(part, sizeof(part), "FULL");
-                       return part;
-               }
-               perc = ((float)remaining / (float)full_design);
+               else remaining_time = 0;
 
-               int seconds = (int)(remaining_time * 3600.0);
-               int hours = seconds / 3600;
+               seconds = (int)(remaining_time * 3600.0);
+               hours = seconds / 3600;
                seconds -= (hours * 3600);
-               int minutes = seconds / 60;
+               minutes = seconds / 60;
                seconds -= (minutes * 60);
 
-               sprintf(part, "%s %.02f%% %02d:%02d:%02d", (status == CS_CHARGING? "CHR" : "BAT"),
-                       (perc * 100), hours, minutes, seconds);
+               (void)snprintf(part, sizeof(part), "%s %.02f%% %02d:%02d:%02d",
+                       (status == CS_CHARGING ? "CHR" :
+                        (status == CS_DISCHARGING ? "BAT" : "FULL")),
+                       (((float)remaining / (float)full_design) * 100),
+                       hours, minutes, seconds);
+       } else {
+               (void)snprintf(part, sizeof(part), "%s %.02f%%",
+                       (status == CS_CHARGING ? "CHR" :
+                        (status == CS_DISCHARGING ? "BAT" : "FULL")),
+                       (((float)remaining / (float)full_design) * 100));
        }
        return part;
 }
 
 /*
- * Just parses /proc/net/wireless
+ * Return the IP address for the given interface or "no IP" if the
+ * interface is up and running but hasn't got an IP address yet
  *
  */
-static char *get_wireless_info() {
-       char buf[1024];
+static const char *get_ip_address(const char *interface) {
        static char part[512];
-       char *interfaces;
-       memset(buf, '\0', sizeof(buf));
-       memset(part, '\0', sizeof(part));
-
-       int fd = open("/proc/net/wireless", O_RDONLY);
-       if (fd == -1)
-               die("Could not open /proc/net/wireless");
-       read(fd, buf, sizeof(buf));
-       close(fd);
+       struct ifreq ifr;
+       struct sockaddr_in addr;
+       socklen_t len = sizeof(struct sockaddr_in);
+       memset(part, 0, sizeof(part));
 
-       interfaces = skip_character(buf, '\n', 2) + 1;
-       while (interfaces < buf+strlen(buf)) {
-               while (isspace((int)*interfaces))
-                       interfaces++;
-               if (strncmp(interfaces, wlan_interface, strlen(wlan_interface)) == 0) {
-                       /* Skip status field (0000) */
-                       interfaces += strlen(wlan_interface) + 2;
-                       interfaces = skip_character(interfaces, ' ', 1);
-                       while (isspace((int)*interfaces))
-                               interfaces++;
-                       int quality = atoi(interfaces);
-                       /* For some reason, I get 255 sometimes */
-                       if ((quality == 255) || (quality == 0)) {
-#ifdef USE_COLORS
-                       snprintf(part, sizeof(part), "#FF0000 " WMII_NORMCOLORS " W: down");
-#else
-                       snprintf(part, sizeof(part), "W: down");
-#endif
+       (void)strcpy(ifr.ifr_name, interface);
+       ifr.ifr_addr.sa_family = AF_INET;
+       if (ioctl(general_socket, SIOCGIFADDR, &ifr) < 0)
+               return NULL;
 
-                       } else {
-                               snprintf(part, sizeof(part), "W: (%02d%%) ", quality);
-                               char *ip_address = get_ip_address(wlan_interface);
-                               strcpy(part+strlen(part), ip_address);
-                       }
-
-                       return part;
-               }
-               interfaces = skip_character(interfaces, '\n', 1) + 1;
-       }
+       memcpy(&addr, &ifr.ifr_addr, len);
+       (void)inet_ntop(AF_INET, &addr.sin_addr.s_addr, part, len);
+       if (strlen(part) == 0)
+               (void)snprintf(part, sizeof(part), "no IP");
 
        return part;
 }
 
-static char *get_ip_address(const char *interface) {
+/*
+ * Just parses /proc/net/wireless looking for lines beginning with
+ * wlan_interface, extracting the quality of the link and adding the
+ * current IP address of wlan_interface.
+ *
+ */
+static char *get_wireless_info() {
+       char buf[1024];
        static char part[512];
-       struct ifreq ifr;
-       memset(part, '\0', sizeof(part));
-
-       int fd = socket(AF_INET, SOCK_DGRAM, 0);
-
-       strcpy(ifr.ifr_name, interface);
-       if (ioctl(fd, SIOCGIFFLAGS, &ifr) < 0)
-               die("Could not get interface flags (SIOCGIFFLAGS)");
+       char *interfaces;
+       int fd;
+       memset(buf, 0, sizeof(buf));
+       memset(part, 0, sizeof(part));
 
-       if (!(ifr.ifr_flags & IFF_UP) ||
-           !(ifr.ifr_flags & IFF_RUNNING)) {
-               close(fd);
-               return NULL;
-       }
+       if ((fd = open("/proc/net/wireless", O_RDONLY)) == -1)
+               die("Could not open /proc/net/wireless\n");
+       (void)read(fd, buf, sizeof(buf));
+       (void)close(fd);
 
-       strcpy(ifr.ifr_name, interface);
-       ifr.ifr_addr.sa_family = AF_INET;
-       if (ioctl(fd, SIOCGIFADDR, &ifr) == 0) {
-               struct sockaddr_in addr;
-               memcpy(&addr, &ifr.ifr_addr, sizeof(struct sockaddr_in));
-               inet_ntop(AF_INET, &addr.sin_addr.s_addr, part, sizeof(struct sockaddr_in));
-               if (strlen(part) == 0)
-                       sprintf(part, "no IP");
+       interfaces = skip_character(buf, '\n', 1) + 1;
+       while ((interfaces = skip_character(interfaces, '\n', 1)+1) < buf+strlen(buf)) {
+               while (isspace((int)*interfaces))
+                       interfaces++;
+               if (!BEGINS_WITH(interfaces, wlan_interface))
+                       continue;
+               int quality;
+               if (sscanf(interfaces, "%*[^:]: 0000 %d", &quality) != 1)
+                       continue;
+               if ((quality == UCHAR_MAX) || (quality == 0)) {
+                       if (use_colors)
+                               (void)snprintf(part, sizeof(part), "%sW: down", color("#FF0000"));
+                       else (void)snprintf(part, sizeof(part), "W: down");
+               } else (void)snprintf(part, sizeof(part), "%sW: (%03d%%) %s",
+                               color("#00FF00"), quality, get_ip_address(wlan_interface));
+               return part;
        }
 
-       close(fd);
        return part;
 }
 
+/*
+ * Combines ethernet IP addresses and speed (if requested) for displaying
+ *
+ */
 static char *get_eth_info() {
        static char part[512];
-       char *ip_address = get_ip_address(eth_interface);
+       const char *ip_address = get_ip_address(eth_interface);
+       int ethspeed = 0;
+
+       if (get_ethspeed) {
+#ifdef LINUX
+               /* This code path requires root privileges */
+               struct ifreq ifr;
+               struct ethtool_cmd ecmd;
+
+               ecmd.cmd = ETHTOOL_GSET;
+               (void)memset(&ifr, 0, sizeof(ifr));
+               ifr.ifr_data = (caddr_t)&ecmd;
+               (void)strcpy(ifr.ifr_name, eth_interface);
+               if (ioctl(general_socket, SIOCETHTOOL, &ifr) == 0)
+                       ethspeed = (ecmd.speed == USHRT_MAX ? 0 : ecmd.speed);
+               else get_ethspeed = false;
+#endif
+       }
 
        if (ip_address == NULL)
-               snprintf(part, sizeof(part), "E: down");
-       else snprintf(part, sizeof(part), "E: %s", ip_address);
+               (void)snprintf(part, sizeof(part), "E: down");
+       else {
+               if (get_ethspeed)
+                       (void)snprintf(part, sizeof(part), "E: %s (%d Mbit/s)", ip_address, ethspeed);
+               else (void)snprintf(part, sizeof(part), "E: %s", ip_address);
+       }
 
        return part;
 }
 
 /*
- * Checks if the PID in path is still valid by checking if /proc/<pid> exists
+ * Checks if the PID in path is still valid by checking:
+ *  (Linux) if /proc/<pid> exists
+ *  (NetBSD) if sysctl returns process infos for this pid
  *
  */
 static bool process_runs(const char *path) {
-       char pidbuf[512],
-            procbuf[512],
-            *walk;
-       int n;
+       char pidbuf[16];
        static glob_t globbuf;
-       struct stat statbuf;
+       int fd;
+       memset(pidbuf, 0, sizeof(pidbuf));
 
        if (glob(path, GLOB_NOCHECK | GLOB_TILDE, NULL, &globbuf) < 0)
-               die("glob() failed");
-       const char *real_path = (globbuf.gl_pathc > 0 ? globbuf.gl_pathv[0] : path);
-       int fd = open(real_path, O_RDONLY);
+               die("glob() failed\n");
+       fd = open((globbuf.gl_pathc > 0 ? globbuf.gl_pathv[0] : path), O_RDONLY);
        globfree(&globbuf);
        if (fd < 0)
                return false;
-       n = read(fd, pidbuf, sizeof(pidbuf));
-       if (n > 0)
-               pidbuf[n] = '\0';
-       close(fd);
-       for (walk = pidbuf; *walk != '\0'; walk++)
-               if (!isdigit((int)(*walk))) {
-                       *walk = '\0';
-                       break;
-               }
-       sprintf(procbuf, "/proc/%s", pidbuf);
+       (void)read(fd, pidbuf, sizeof(pidbuf));
+       (void)close(fd);
+
+#ifdef LINUX
+       struct stat statbuf;
+       char procbuf[512];
+       (void)snprintf(procbuf, sizeof(procbuf), "/proc/%ld", strtol(pidbuf, NULL, 10));
        return (stat(procbuf, &statbuf) >= 0);
+#else
+       /* TODO: correctly check for NetBSD. Evaluate if this runs on OpenBSD/FreeBSD */
+       struct kinfo_proc info;
+       size_t length = sizeof(struct kinfo_proc);
+       int mib[4] = { CTL_KERN, KERN_PROC, KERN_PROC_PID, strtol(pidbuf, NULL, 10) };
+       if (sysctl(mib, 4, &info, &length, NULL, 0) < 0)
+               return false;
+       return (length != 0);
+#endif
+}
+
+/*
+ * Reads the configuration from the given file
+ *
+ */
+static int load_configuration(const char *configfile) {
+       #define OPT(x) else if (strcasecmp(dest_name, x) == 0)
+
+       /* check if the file exists */
+       struct stat buf;
+       if (stat(configfile, &buf) < 0)
+               return -1;
+
+       int result = 0;
+       FILE *handle = fopen(configfile, "r");
+       if (handle == NULL)
+               die("Could not open configfile\n");
+       char dest_name[512], dest_value[512], whole_buffer[1026];
+
+       while (!feof(handle)) {
+               char *ret;
+               if ((ret = fgets(whole_buffer, 1024, handle)) == whole_buffer) {
+                       /* sscanf implicitly strips whitespace */
+                       if (sscanf(whole_buffer, "%s %[^\n]", dest_name, dest_value) < 1)
+                               continue;
+               } else if (ret != NULL)
+                       die("Could not read line in configuration file\n");
+
+               /* skip comments and empty lines */
+               if (dest_name[0] == '#' || strlen(dest_name) < 3)
+                       continue;
+
+               OPT("wlan")
+                       wlan_interface = strdup(dest_value);
+               OPT("eth")
+                       eth_interface = strdup(dest_value);
+               OPT("time_format")
+                       time_format = strdup(dest_value);
+               OPT("battery_path") {
+                       struct battery *new = calloc(1, sizeof(struct battery));
+                       if (new == NULL)
+                               die("Could not allocate memory\n");
+                       new->path = strdup(dest_value);
+                       SIMPLEQ_INSERT_TAIL(&batteries, new, batteries);
+               } OPT("color")
+                       use_colors = true;
+               OPT("get_ethspeed")
+                       get_ethspeed = true;
+               OPT("normcolors")
+                       wmii_normcolors = strdup(dest_value);
+               OPT("interval")
+                       interval = atoi(dest_value);
+               OPT("wmii_path")
+               {
+#ifndef DZEN
+                       static glob_t globbuf;
+                       struct stat stbuf;
+                       if (glob(dest_value, GLOB_NOCHECK | GLOB_TILDE, NULL, &globbuf) < 0)
+                               die("glob() failed\n");
+                       wmii_path = strdup(globbuf.gl_pathc > 0 ? globbuf.gl_pathv[0] : dest_value);
+                       globfree(&globbuf);
+
+                       if ((stat(wmii_path, &stbuf)) == -1) {
+                               fprintf(stderr, "Warning: wmii_path contains an invalid path\n");
+                               free(wmii_path);
+                               wmii_path = strdup(dest_value);
+                       }
+                       if (wmii_path[strlen(wmii_path)-1] != '/')
+                               die("wmii_path is not terminated by /\n");
+#endif
+               }
+               OPT("run_watch")
+               {
+                       char *name = strdup(dest_value);
+                       char *path = name;
+                       while (*path != ' ')
+                               path++;
+                       *(path++) = '\0';
+                       num_run_watches += 2;
+                       run_watches = realloc(run_watches, sizeof(char*) * num_run_watches);
+                       run_watches[num_run_watches-2] = name;
+                       run_watches[num_run_watches-1] = path;
+               }
+               OPT("order")
+               {
+                       #define SET_ORDER(opt, idx) { if (strcasecmp(token, opt) == 0) sprintf(order[idx], "%d", c++); }
+                       char *walk, *token;
+                       int c = 0;
+                       walk = token = dest_value;
+                       while (*walk != '\0') {
+                               while ((*walk != ',') && (*walk != '\0'))
+                                       walk++;
+                               *(walk++) = '\0';
+                               SET_ORDER("run", ORDER_RUN);
+                               SET_ORDER("wlan", ORDER_WLAN);
+                               SET_ORDER("eth", ORDER_ETH);
+                               SET_ORDER("battery", ORDER_BATTERY);
+                               SET_ORDER("load", ORDER_LOAD);
+                               SET_ORDER("time", ORDER_TIME);
+                               token = walk;
+                               while (isspace((int)(*token)))
+                                       token++;
+                       }
+               }
+               else
+               {
+                       result = -2;
+                       die("Unknown configfile option: %s\n", dest_name);
+               }
+       }
+       fclose(handle);
+
+#ifndef DZEN
+       if (wmii_path == NULL)
+               exit(EXIT_FAILURE);
+#endif
+
+       return result;
 }
 
-int main(void) {
+int main(int argc, char *argv[]) {
        char part[512],
-            pathbuf[512],
-            *end;
+            pathbuf[512];
        unsigned int i;
 
-       cleanup_rbar_dir();
-       create_file(ORDER_WLAN "wlan");
-       create_file(ORDER_ETH "eth");
-       create_file(ORDER_BATTERY "battery");
-       create_file(ORDER_LOAD "load");
-       create_file(ORDER_TIME "time");
-       for (i = 0; i < sizeof(run_watches) / sizeof(char*); i += 2) {
-               sprintf(pathbuf, "%s%s", ORDER_RUN, run_watches[i]);
-               create_file(pathbuf);
-       }
+       char *configfile = PREFIX "/etc/wmiistatus.conf";
+       int o, option_index = 0;
+       struct option long_options[] = {
+               {"config", required_argument, 0, 'c'},
+               {"help", no_argument, 0, 'h'},
+               {0, 0, 0, 0}
+       };
+
+       SIMPLEQ_INIT(&batteries);
+
+       while ((o = getopt_long(argc, argv, "c:h", long_options, &option_index)) != -1)
+               if ((char)o == 'c')
+                       configfile = optarg;
+               else if ((char)o == 'h') {
+                       printf("wmiistatus (c) 2008-2009 Michael Stapelberg\n"
+                               "Syntax: %s [-c <configfile>]\n", argv[0]);
+                       return 0;
+               }
+
+       if (load_configuration(configfile) < 0)
+               return EXIT_FAILURE;
+
+       setup();
+
+       if ((general_socket = socket(AF_INET, SOCK_DGRAM, 0)) == -1)
+               die("Could not create socket\n");
 
        while (1) {
-               for (i = 0; i < sizeof(run_watches) / sizeof(char*); i += 2) {
+               for (i = 0; i < num_run_watches; i += 2) {
                        bool running = process_runs(run_watches[i+1]);
-#ifdef USE_COLORS
-                       sprintf(part, "%s %s: %s", (running ? "#00FF00 " WMII_NORMCOLORS : "#FF0000 " WMII_NORMCOLORS), run_watches[i], (running ? "yes" : "no"));
-#else
-                       sprintf(part, "%s: %s", run_watches[i], (running ? "yes" : "no"));
-#endif
-                       sprintf(pathbuf, "%s%s", ORDER_RUN, run_watches[i]);
-                       write_to_statusbar(pathbuf, part);
+                       if (use_colors)
+                               snprintf(part, sizeof(part), "%s%s: %s",
+                                       (running ? color("#00FF00") : color("#FF0000")),
+                                       run_watches[i],
+                                       (running ? "yes" : "no"));
+                       else snprintf(part, sizeof(part), "%s: %s", run_watches[i], (running ? "yes" : "no"));
+                       snprintf(pathbuf, sizeof(pathbuf), "%s%s", order[ORDER_RUN], run_watches[i]);
+                       write_to_statusbar(pathbuf, part, false);
                }
 
-               write_to_statusbar(ORDER_WLAN "wlan", get_wireless_info());
-               write_to_statusbar(ORDER_ETH "eth", get_eth_info());
-               write_to_statusbar(ORDER_BATTERY "battery", get_battery_info());
+               if (wlan_interface)
+                       write_to_statusbar(concat(order[ORDER_WLAN], "wlan"), get_wireless_info(), false);
+               if (eth_interface)
+                       write_to_statusbar(concat(order[ORDER_ETH], "eth"), get_eth_info(), false);
+               struct battery *current_battery;
+               SIMPLEQ_FOREACH(current_battery, &batteries, batteries) {
+                       write_to_statusbar(concat(order[ORDER_BATTERY], "battery"), get_battery_info(current_battery->path), false);
+               }
 
                /* Get load */
-               int load_avg = open("/proc/loadavg", O_RDONLY);
-               if (load_avg == -1)
-                       die("Could not open /proc/loadavg");
-               read(load_avg, part, sizeof(part));
-               close(load_avg);
-               end = skip_character(part, ' ', 3);
-               *end = '\0';
-               write_to_statusbar(ORDER_LOAD "load", part);
-
-               /* Get date & time */
-               time_t current_time = time(NULL);
-               struct tm *current_tm = localtime(&current_time);
-               strftime(part, sizeof(part), time_format, current_tm);
-               write_to_statusbar(ORDER_TIME "time", part);
-
-               sleep(1);
+#ifdef LINUX
+               int load_avg;
+               if ((load_avg = open("/proc/loadavg", O_RDONLY)) == -1)
+                       die("Could not open /proc/loadavg\n");
+               (void)read(load_avg, part, sizeof(part));
+               (void)close(load_avg);
+               *skip_character(part, ' ', 3) = '\0';
+#else
+               /* TODO: correctly check for NetBSD, check if it works the same on *BSD */
+               struct loadavg load;
+               size_t length = sizeof(struct loadavg);
+               int mib[2] = { CTL_VM, VM_LOADAVG };
+               if (sysctl(mib, 2, &load, &length, NULL, 0) < 0)
+                       die("Could not sysctl({ CTL_VM, VM_LOADAVG })\n");
+               double scale = load.fscale;
+               (void)snprintf(part, sizeof(part), "%.02f %.02f %.02f",
+                               (double)load.ldavg[0] / scale,
+                               (double)load.ldavg[1] / scale,
+                               (double)load.ldavg[2] / scale);
+#endif
+               write_to_statusbar(concat(order[ORDER_LOAD], "load"), part, !time_format);
+
+               if (time_format) {
+                       /* Get date & time */
+                       time_t current_time = time(NULL);
+                       struct tm *current_tm = localtime(&current_time);
+                       (void)strftime(part, sizeof(part), time_format, current_tm);
+                       write_to_statusbar(concat(order[ORDER_TIME], "time"), part, true);
+               }
+
+               sleep(interval);
        }
 }