]> git.sur5r.net Git - i3/i3status/blobdiff - i3status.c
bump copyright
[i3/i3status] / i3status.c
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 /*
- * i3status – Generates a status line for dzen2 or wmii
+ * vim:ts=8:expandtab
  *
+ * i3status – Generates a status line for dzen2 or xmobar
  *
- * Copyright © 2008-2009 Michael Stapelberg and contributors
- * All rights reserved.
+ * Copyright © 2008-2011 Michael Stapelberg and contributors
+ * Copyright © 2009 Thorsten Toepper <atsutane at freethoughts dot de>
+ * Copyright © 2010 Axel Wagner <mail at merovius dot de>
+ * Copyright © 2010 Fernando Tarlá Cardoso Lemos <fernandotcl at gmail dot com>
  *
- * Redistribution and use in source and binary forms, with or without modification,
- * are permitted provided that the following conditions are met:
- *
- * * Redistributions of source code must retain the above copyright notice, this
- *   list of conditions and the following disclaimer.
- *
- * * Redistributions in binary form must reproduce the above copyright notice, this
- *   list of conditions and the following disclaimer in the documentation and/or other
- *   materials provided with the distribution.
- *
- * * Neither the name of Michael Stapelberg nor the names of contributors
- *   may be used to endorse or promote products derived from this software without
- *   specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
- * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
- * SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
- * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
- * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
- * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
- * DAMAGE.
+ * See file LICENSE for license information.
  *
  */
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <fcntl.h>
 #include <string.h>
 #include <stdio.h>
-#include <time.h>
 #include <stdbool.h>
-#include <stdarg.h>
 #include <unistd.h>
 #include <stdlib.h>
-#include <limits.h>
-#include <ctype.h>
-#include <net/if.h>
-#include <sys/ioctl.h>
 #include <sys/socket.h>
 #include <netinet/in.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 <signal.h>
+#include <confuse.h>
+#include <glob.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <time.h>
+#include <sys/time.h>
+#include <locale.h>
 
 #include "i3status.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;
+#define exit_if_null(pointer, ...) { if (pointer == NULL) die(__VA_ARGS__); }
 
 /* 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;
+int general_socket;
 
-/*
- * 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;
-}
+cfg_t *cfg, *cfg_general;
 
 /*
- * Returns the correct color format for dzen (^fg(color)) or wmii (color <normcolors>)
+ * Exit upon SIGPIPE because when we have nowhere to write to, gathering
+ * system information is pointless.
  *
  */
-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;
+void sigpipe(int signum) {
+        fprintf(stderr, "Received SIGPIPE, exiting\n");
+        exit(1);
 }
 
 /*
- * Cleans wmii's /rbar directory by deleting all regular files
+ * Checks if the given path exists by calling stat().
  *
  */
-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(EXIT_FAILURE);
-
-       while ((ent = readdir(dir)) != NULL) {
-               if (ent->d_type == DT_REG) {
-                       (void)snprintf(pathbuf, sizeof(pathbuf), "%s%s", wmii_path, ent->d_name);
-                       if (unlink(pathbuf) == -1)
-                               exit(EXIT_FAILURE);
-               }
-       }
-
-       (void)closedir(dir);
+static bool path_exists(const char *path) {
+        struct stat buf;
+        return (stat(path, &buf) == 0);
 }
 
-/*
- * 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;
-
-       (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);
+static void *scalloc(size_t size) {
+        void *result = calloc(size, 1);
+        exit_if_null(result, "Error: out of memory (calloc(%zd))\n", size);
+        return result;
 }
 
-/*
- * 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
-
-       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 char *sstrdup(const char *str) {
+        char *result = strdup(str);
+        exit_if_null(result, "Error: out of memory (strdup())\n");
+        return result;
 }
 
-/*
- * 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;
-
-       (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
+ * Validates a color in "#RRGGBB" format
  *
  */
-static void write_error_to_statusbar(const char *message) {
-       cleanup_rbar_dir();
-       create_file("error");
-       write_to_statusbar("error", message, true);
+static int valid_color(const char *value)
+{
+        if (strlen(value) != 7) return 0;
+        if (value[0] != '#') return 0;
+        for (int i = 1; i < 7; ++i) {
+                if (value[i] >= '0' && value[i] <= '9') continue;
+                if (value[i] >= 'a' && value[i] <= 'f') continue;
+                if (value[i] >= 'A' && value[i] <= 'F') continue;
+                return 0;
+        }
+        return 1;
 }
 
 /*
- * Write errormessage to statusbar and exit
+ * This function resolves ~ in pathnames.
+ * It may resolve wildcards in the first part of the path, but if no match
+ * or multiple matches are found, it just returns a copy of path as given.
  *
  */
-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);
+static char *resolve_tilde(const char *path) {
+        static glob_t globbuf;
+        char *head, *tail, *result = NULL;
+
+        tail = strchr(path, '/');
+        head = strndup(path, tail ? (size_t)(tail - path) : strlen(path));
+
+        int res = glob(head, GLOB_TILDE, NULL, &globbuf);
+        free(head);
+        /* no match, or many wildcard matches are bad */
+        if (res == GLOB_NOMATCH || globbuf.gl_pathc != 1)
+                result = sstrdup(path);
+        else if (res != 0) {
+                die("glob() failed");
+        } else {
+                head = globbuf.gl_pathv[0];
+                result = scalloc(strlen(head) + (tail ? strlen(tail) : 0) + 1);
+                strncpy(result, head, strlen(head));
+                strncat(result, tail, strlen(tail));
+        }
+        globfree(&globbuf);
+
+        return result;
 }
 
-/*
- * 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;
-       size_t len = strlen(input);
-       int blanks = 0;
-
-       for (walk = input; ((size_t)(walk - input) < len) && (blanks < amount); walk++)
-               if (*walk == character)
-                       blanks++;
-
-       return (walk == input ? walk : walk-1);
-}
-
-/*
- * 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(const char *path) {
-       char buf[1024];
-       static char part[512];
-       char *walk, *last;
-       int fd;
-       int full_design = -1,
-           remaining = -1,
-           present_rate = -1;
-       charging_status_t status = CS_DISCHARGING;
-
-       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") ||
-                           BEGINS_WITH(last, "POWER_SUPPLY_CHARGE_FULL_DESIGN"))
-                               full_design = atoi(walk+1);
-                       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);
-                       else if (BEGINS_WITH(last, "POWER_SUPPLY_STATUS=Charging"))
-                               status = CS_CHARGING;
-                       else if (BEGINS_WITH(last, "POWER_SUPPLY_STATUS=Full"))
-                               status = CS_FULL;
-               } else if (*walk == '\n')
-                       last = walk+1;
-       (void)close(fd);
-
-       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 remaining_time = 0;
-
-               seconds = (int)(remaining_time * 3600.0);
-               hours = seconds / 3600;
-               seconds -= (hours * 3600);
-               minutes = seconds / 60;
-               seconds -= (minutes * 60);
-
-               (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;
-}
-
-/*
- * 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 const char *get_ip_address(const char *interface) {
-       static char part[512];
-       struct ifreq ifr;
-       struct sockaddr_in addr;
-       socklen_t len = sizeof(struct sockaddr_in);
-       memset(part, 0, sizeof(part));
-
-       /* First check if the interface is running */
-       (void)strcpy(ifr.ifr_name, interface);
-       if (ioctl(general_socket, SIOCGIFFLAGS, &ifr) < 0 ||
-           !(ifr.ifr_flags & IFF_RUNNING))
-               return NULL;
-
-       /* Interface is up, get the IP address */
-       (void)strcpy(ifr.ifr_name, interface);
-       ifr.ifr_addr.sa_family = AF_INET;
-       if (ioctl(general_socket, SIOCGIFADDR, &ifr) < 0)
-               return "no IP";
-
-       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;
-}
-
-/*
- * 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];
-       char *interfaces;
-       int fd;
-       memset(buf, 0, sizeof(buf));
-       memset(part, 0, sizeof(part));
-
-       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);
-
-       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;
-       }
-
-       return part;
-}
-
-/*
- * Combines ethernet IP addresses and speed (if requested) for displaying
- *
- */
-static char *get_eth_info() {
-       static char part[512];
-       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)
-               (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:
- *  (Linux) if /proc/<pid> exists
- *  (NetBSD) if sysctl returns process infos for this pid
- *
- */
-static bool process_runs(const char *path) {
-       char pidbuf[16];
-       static glob_t globbuf;
-       int fd;
-       memset(pidbuf, 0, sizeof(pidbuf));
-
-       if (glob(path, GLOB_NOCHECK | GLOB_TILDE, NULL, &globbuf) < 0)
-               die("glob() failed\n");
-       fd = open((globbuf.gl_pathc > 0 ? globbuf.gl_pathv[0] : path), O_RDONLY);
-       globfree(&globbuf);
-       if (fd < 0)
-               return false;
-       (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;
+static char *get_config_path() {
+        char *xdg_config_home, *xdg_config_dirs, *config_path;
+
+        /* 1: check the traditional path under the home directory */
+        config_path = resolve_tilde("~/.i3status.conf");
+        if (path_exists(config_path))
+                return config_path;
+
+        /* 2: check for $XDG_CONFIG_HOME/i3status/config */
+        if ((xdg_config_home = getenv("XDG_CONFIG_HOME")) == NULL)
+                xdg_config_home = "~/.config";
+
+        xdg_config_home = resolve_tilde(xdg_config_home);
+        if (asprintf(&config_path, "%s/i3status/config", xdg_config_home) == -1)
+                die("asprintf() failed");
+        free(xdg_config_home);
+
+        if (path_exists(config_path))
+                return config_path;
+        free(config_path);
+
+        /* 3: check the traditional path under /etc */
+        config_path = SYSCONFDIR "/i3status.conf";
+        if (path_exists(config_path))
+            return sstrdup(config_path);
+
+        /* 4: check for $XDG_CONFIG_DIRS/i3status/config */
+        if ((xdg_config_dirs = getenv("XDG_CONFIG_DIRS")) == NULL)
+                xdg_config_dirs = "/etc/xdg";
+
+        char *buf = strdup(xdg_config_dirs);
+        char *tok = strtok(buf, ":");
+        while (tok != NULL) {
+                tok = resolve_tilde(tok);
+                if (asprintf(&config_path, "%s/i3status/config", tok) == -1)
+                        die("asprintf() failed");
+                free(tok);
+                if (path_exists(config_path)) {
+                        free(buf);
+                        return config_path;
+                }
+                free(config_path);
+                tok = strtok(NULL, ":");
+        }
+        free(buf);
+
+        die("Unable to find the configuration file (looked at "
+                "~/.i3status/config, $XDG_CONFIG_HOME/i3status/config, "
+                "/etc/i3status/config and $XDG_CONFIG_DIRS/i3status/config)");
+        return NULL;
 }
 
 int main(int argc, char *argv[]) {
-       char part[512],
-            pathbuf[512];
-       unsigned int i;
-
-       char *configfile = PREFIX "/etc/i3status.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("i3status (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 < num_run_watches; i += 2) {
-                       bool running = process_runs(run_watches[i+1]);
-                       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);
-               }
-
-               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 */
-#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);
-       }
+        unsigned int j;
+
+        cfg_opt_t general_opts[] = {
+                CFG_STR("output_format", "auto", CFGF_NONE),
+                CFG_BOOL("colors", 1, CFGF_NONE),
+                CFG_STR("color_good", "#00FF00", CFGF_NONE),
+                CFG_STR("color_degraded", "#FFFF00", CFGF_NONE),
+                CFG_STR("color_bad", "#FF0000", CFGF_NONE),
+                CFG_STR("color_separator", "#333333", CFGF_NONE),
+                CFG_INT("interval", 1, CFGF_NONE),
+                CFG_END()
+        };
+
+        cfg_opt_t run_watch_opts[] = {
+                CFG_STR("pidfile", NULL, CFGF_NONE),
+                CFG_STR("format", "%title: %status", CFGF_NONE),
+                CFG_END()
+        };
+
+        cfg_opt_t wireless_opts[] = {
+                CFG_STR("format_up", "W: (%quality at %essid, %bitrate) %ip", CFGF_NONE),
+                CFG_STR("format_down", "W: down", CFGF_NONE),
+                CFG_END()
+        };
+
+        cfg_opt_t ethernet_opts[] = {
+                CFG_STR("format_up", "E: %ip (%speed)", CFGF_NONE),
+                CFG_STR("format_down", "E: down", CFGF_NONE),
+                CFG_END()
+        };
+
+        cfg_opt_t ipv6_opts[] = {
+                CFG_STR("format_up", "%ip", CFGF_NONE),
+                CFG_STR("format_down", "no IPv6", CFGF_NONE),
+                CFG_END()
+        };
+
+        cfg_opt_t battery_opts[] = {
+                CFG_STR("format", "%status %percentage %remaining", CFGF_NONE),
+                CFG_BOOL("last_full_capacity", false, CFGF_NONE),
+                CFG_END()
+        };
+
+        cfg_opt_t time_opts[] = {
+                CFG_STR("format", "%d.%m.%Y %H:%M:%S", CFGF_NONE),
+                CFG_END()
+        };
+
+        cfg_opt_t ddate_opts[] = {
+                CFG_STR("format", "%{%a, %b %d%}, %Y%N - %H", CFGF_NONE),
+                CFG_END()
+        };
+
+        cfg_opt_t load_opts[] = {
+                CFG_STR("format", "%5min %10min %15min", CFGF_NONE),
+                CFG_END()
+        };
+
+        cfg_opt_t usage_opts[] = {
+                CFG_STR("format", "%usage", CFGF_NONE),
+                CFG_END()
+        };
+
+        cfg_opt_t temp_opts[] = {
+                CFG_STR("format", "%degrees C", CFGF_NONE),
+                CFG_STR("path", NULL, CFGF_NONE),
+                CFG_END()
+        };
+
+        cfg_opt_t disk_opts[] = {
+                CFG_STR("format", "%free", CFGF_NONE),
+                CFG_END()
+        };
+
+        cfg_opt_t volume_opts[] = {
+                CFG_STR("format", "♪: %volume", CFGF_NONE),
+                CFG_STR("device", "default", CFGF_NONE),
+                CFG_STR("mixer", "Master", CFGF_NONE),
+                CFG_INT("mixer_idx", 0, CFGF_NONE),
+                CFG_END()
+        };
+
+        cfg_opt_t opts[] = {
+                CFG_STR_LIST("order", "{ipv6,\"run_watch DHCP\",\"wireless wlan0\",\"ethernet eth0\",\"battery 0\",\"cpu_temperature 0\",load,time}", CFGF_NONE),
+                CFG_SEC("general", general_opts, CFGF_NONE),
+                CFG_SEC("run_watch", run_watch_opts, CFGF_TITLE | CFGF_MULTI),
+                CFG_SEC("wireless", wireless_opts, CFGF_TITLE | CFGF_MULTI),
+                CFG_SEC("ethernet", ethernet_opts, CFGF_TITLE | CFGF_MULTI),
+                CFG_SEC("battery", battery_opts, CFGF_TITLE | CFGF_MULTI),
+                CFG_SEC("cpu_temperature", temp_opts, CFGF_TITLE | CFGF_MULTI),
+                CFG_SEC("disk", disk_opts, CFGF_TITLE | CFGF_MULTI),
+                CFG_SEC("volume", volume_opts, CFGF_TITLE | CFGF_MULTI),
+                CFG_SEC("ipv6", ipv6_opts, CFGF_NONE),
+                CFG_SEC("time", time_opts, CFGF_NONE),
+                CFG_SEC("ddate", ddate_opts, CFGF_NONE),
+                CFG_SEC("load", load_opts, CFGF_NONE),
+                CFG_SEC("cpu_usage", usage_opts, CFGF_NONE),
+                CFG_END()
+        };
+
+        char *configfile = NULL;
+        int o, option_index = 0;
+        struct option long_options[] = {
+                {"config", required_argument, 0, 'c'},
+                {"help", no_argument, 0, 'h'},
+                {"version", no_argument, 0, 'v'},
+                {0, 0, 0, 0}
+        };
+
+        struct sigaction action;
+        memset(&action, 0, sizeof(struct sigaction));
+        action.sa_handler = sigpipe;
+        sigaction(SIGPIPE, &action, NULL);
+
+        if (setlocale(LC_ALL, "") == NULL)
+                die("Could not set locale. Please make sure all your LC_* / LANG settings are correct.");
+
+        while ((o = getopt_long(argc, argv, "c:hv", long_options, &option_index)) != -1)
+                if ((char)o == 'c')
+                        configfile = optarg;
+                else if ((char)o == 'h') {
+                        printf("i3status " VERSION " © 2008-2011 Michael Stapelberg and contributors\n"
+                                "Syntax: %s [-c <configfile>] [-h] [-v]\n", argv[0]);
+                        return 0;
+                } else if ((char)o == 'v') {
+                        printf("i3status " VERSION " © 2008-2011 Michael Stapelberg and contributors\n");
+                        return 0;
+                }
+
+
+        if (configfile == NULL)
+                configfile = get_config_path();
+
+        cfg = cfg_init(opts, CFGF_NONE);
+        if (cfg_parse(cfg, configfile) == CFG_PARSE_ERROR)
+                return EXIT_FAILURE;
+
+        cfg_general = cfg_getsec(cfg, "general");
+        if (cfg_general == NULL)
+                die("Could not get section \"general\"\n");
+
+        char *output_str = cfg_getstr(cfg_general, "output_format");
+        if (strcasecmp(output_str, "auto") == 0) {
+                fprintf(stderr, "i3status: trying to auto-detect output_format setting\n");
+                output_str = auto_detect_format();
+                if (!output_str) {
+                        output_str = "none";
+                        fprintf(stderr, "i3status: falling back to \"none\"\n");
+                } else {
+                        fprintf(stderr, "i3status: auto-detected \"%s\"\n", output_str);
+                }
+        }
+
+        if (strcasecmp(output_str, "dzen2") == 0)
+                output_format = O_DZEN2;
+        else if (strcasecmp(output_str, "xmobar") == 0)
+                output_format = O_XMOBAR;
+        else if (strcasecmp(output_str, "none") == 0)
+                output_format = O_NONE;
+        else die("Unknown output format: \"%s\"\n", output_str);
+
+        if (!valid_color(cfg_getstr(cfg_general, "color_good"))
+                        || !valid_color(cfg_getstr(cfg_general, "color_degraded"))
+                        || !valid_color(cfg_getstr(cfg_general, "color_bad"))
+                        || !valid_color(cfg_getstr(cfg_general, "color_separator")))
+               die("Bad color format");
+
+        if ((general_socket = socket(AF_INET, SOCK_DGRAM, 0)) == -1)
+                die("Could not create socket\n");
+
+        int interval = cfg_getint(cfg_general, "interval");
+
+        struct tm tm;
+        while (1) {
+                struct timeval tv;
+                gettimeofday(&tv, NULL);
+                time_t current_time = tv.tv_sec;
+                struct tm *current_tm = NULL;
+                if (current_time != (time_t) -1) {
+                        localtime_r(&current_time, &tm);
+                        current_tm = &tm;
+                }
+                for (j = 0; j < cfg_size(cfg, "order"); j++) {
+                        if (j > 0)
+                                print_seperator();
+
+                        const char *current = cfg_getnstr(cfg, "order", j);
+
+                        CASE_SEC("ipv6")
+                                print_ipv6_info(cfg_getstr(sec, "format_up"), cfg_getstr(sec, "format_down"));
+
+                        CASE_SEC_TITLE("wireless")
+                                print_wireless_info(title, cfg_getstr(sec, "format_up"), cfg_getstr(sec, "format_down"));
+
+                        CASE_SEC_TITLE("ethernet")
+                                print_eth_info(title, cfg_getstr(sec, "format_up"), cfg_getstr(sec, "format_down"));
+
+                        CASE_SEC_TITLE("battery")
+                                print_battery_info(atoi(title), cfg_getstr(sec, "format"), cfg_getbool(sec, "last_full_capacity"));
+
+                        CASE_SEC_TITLE("run_watch")
+                                print_run_watch(title, cfg_getstr(sec, "pidfile"), cfg_getstr(sec, "format"));
+
+                        CASE_SEC_TITLE("disk")
+                                print_disk_info(title, cfg_getstr(sec, "format"));
+
+                        CASE_SEC("load")
+                                print_load(cfg_getstr(sec, "format"));
+
+                        CASE_SEC("time")
+                                print_time(cfg_getstr(sec, "format"), current_tm);
+
+                        CASE_SEC("ddate")
+                                print_ddate(cfg_getstr(sec, "format"), current_tm);
+
+                        CASE_SEC_TITLE("volume")
+                                print_volume(cfg_getstr(sec, "format"),
+                                             cfg_getstr(sec, "device"),
+                                             cfg_getstr(sec, "mixer"),
+                                             cfg_getint(sec, "mixer_idx"));
+
+                        CASE_SEC_TITLE("cpu_temperature")
+                                print_cpu_temperature_info(atoi(title), cfg_getstr(sec, "path"), cfg_getstr(sec, "format"));
+
+                        CASE_SEC("cpu_usage")
+                                print_cpu_usage(cfg_getstr(sec, "format"));
+                }
+                printf("\n");
+                fflush(stdout);
+
+                /* To provide updates on every full second (as good as possible)
+                 * we don’t use sleep(interval) but we sleep until the next
+                 * second (with microsecond precision) plus (interval-1)
+                 * seconds. */
+                struct timeval current_timeval;
+                gettimeofday(&current_timeval, NULL);
+                struct timespec ts = {interval - 1, (10e5 - current_timeval.tv_usec) * 1000};
+                nanosleep(&ts, NULL);
+        }
 }