git.sur5r.net Git - i3/i3status/blob - i3status.c

   1 /*
   2  * vim:ts=8:expandtab
   3  *
   4  * i3status – Generates a status line for dzen2 or wmii
   5  *
   6  *
   7  * Copyright © 2008-2009 Michael Stapelberg and contributors
   8  * Copyright © 2009 Thorsten Toepper <atsutane at freethoughts dot de>
   9  * All rights reserved.
  10  *
  11  * Redistribution and use in source and binary forms, with or without modification,
  12  * are permitted provided that the following conditions are met:
  13  *
  14  * * Redistributions of source code must retain the above copyright notice, this
  15  *   list of conditions and the following disclaimer.
  16  *
  17  * * Redistributions in binary form must reproduce the above copyright notice, this
  18  *   list of conditions and the following disclaimer in the documentation and/or other
  19  *   materials provided with the distribution.
  20  *
  21  * * Neither the name of Michael Stapelberg nor the names of contributors
  22  *   may be used to endorse or promote products derived from this software without
  23  *   specific prior written permission.
  24  *
  25  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
  26  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  27  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
  28  * SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  29  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
  30  * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
  31  * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  32  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
  33  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
  34  * DAMAGE.
  35  *
  36  */
  37 #include <sys/types.h>
  38 #include <sys/stat.h>
  39 #include <fcntl.h>
  40 #include <string.h>
  41 #include <stdio.h>
  42 #include <time.h>
  43 #include <stdbool.h>
  44 #include <stdarg.h>
  45 #include <unistd.h>
  46 #include <stdlib.h>
  47 #include <limits.h>
  48 #include <ctype.h>
  49 #include <net/if.h>
  50 #include <sys/ioctl.h>
  51 #include <sys/socket.h>
  52 #include <netinet/in.h>
  53 #include <arpa/inet.h>
  54 #include <glob.h>
  55 #include <dirent.h>
  56 #include <getopt.h>
  57
  58 #include "queue.h"
  59
  60 #ifdef LINUX
  61 #include <linux/ethtool.h>
  62 #include <linux/sockios.h>
  63 #else
  64 /* TODO: correctly check for *BSD */
  65 #include <sys/param.h>
  66 #include <sys/sysctl.h>
  67 #include <sys/resource.h>
  68 #endif
  69
  70 #include "i3status.h"
  71
  72 #define BAR "^fg(#333333)^p(5;-2)^ro(2)^p()^fg()^p(5)"
  73
  74 struct battery {
  75         char *path;
  76         /* Use last full capacity instead of design capacity */
  77         bool use_last_full;
  78         SIMPLEQ_ENTRY(battery) batteries;
  79 };
  80
  81 SIMPLEQ_HEAD(battery_head, battery) batteries;
  82
  83 /* socket file descriptor for general purposes */
  84 static int general_socket;
  85
  86 static const char *wlan_interface;
  87 static const char *eth_interface;
  88 static char *wmii_path;
  89 static const char *time_format;
  90 static bool use_colors;
  91 static bool get_ethspeed;
  92 static bool get_cpu_temperature;
  93 static char *thermal_zone;
  94 static const char *wmii_normcolors = "#222222 #333333";
  95 static char order[MAX_ORDER][2];
  96 static const char **run_watches;
  97 static unsigned int num_run_watches;
  98 static unsigned int interval = 1;
  99
 100 static int max(int a, int b) {
 101         return (a > b ? a : b);
 102 }
 103
 104 /*
 105  * This function just concats two strings in place, it should only be used
 106  * for concatting order to the name of a file or concatting color codes.
 107  * Otherwise, the buffer size would have to be increased.
 108  *
 109  */
 110 static char *concat(const char *str1, const char *str2) {
 111         static char concatbuf[32];
 112         (void)snprintf(concatbuf, sizeof(concatbuf), "%s%s", str1, str2);
 113         return concatbuf;
 114 }
 115
 116 /*
 117  * Returns the correct color format for dzen (^fg(color)) or wmii (color <normcolors>)
 118  *
 119  */
 120 static char *color(const char *colorstr) {
 121         static char colorbuf[32];
 122 #ifdef DZEN
 123         (void)snprintf(colorbuf, sizeof(colorbuf), "^fg(%s)", colorstr);
 124 #else
 125         (void)snprintf(colorbuf, sizeof(colorbuf), "%s %s ", colorstr, wmii_normcolors);
 126 #endif
 127         return colorbuf;
 128 }
 129
 130 /*
 131  * Cleans wmii's /rbar directory by deleting all regular files
 132  *
 133  */
 134 static void cleanup_rbar_dir() {
 135 #ifdef DZEN
 136         return;
 137 #endif
 138         struct dirent *ent;
 139         DIR *dir;
 140         char pathbuf[strlen(wmii_path)+256+1];
 141
 142         if ((dir = opendir(wmii_path)) == NULL)
 143                 exit(EXIT_FAILURE);
 144
 145         while ((ent = readdir(dir)) != NULL) {
 146                 if (ent->d_type == DT_REG) {
 147                         (void)snprintf(pathbuf, sizeof(pathbuf), "%s%s", wmii_path, ent->d_name);
 148                         if (unlink(pathbuf) == -1)
 149                                 exit(EXIT_FAILURE);
 150                 }
 151         }
 152
 153         (void)closedir(dir);
 154 }
 155
 156 /*
 157  * Creates the specified file in wmii's /rbar directory with
 158  * correct modes and initializes colors if colormode is enabled
 159  *
 160  */
 161 static void create_file(const char *name) {
 162 #ifdef DZEN
 163         return;
 164 #endif
 165         char pathbuf[strlen(wmii_path)+256+1];
 166         int fd;
 167         int flags = O_CREAT | O_WRONLY;
 168         struct stat statbuf;
 169
 170         (void)snprintf(pathbuf, sizeof(pathbuf), "%s%s", wmii_path, name);
 171
 172         /* Overwrite file's contents if it exists */
 173         if (stat(pathbuf, &statbuf) >= 0)
 174                 flags |= O_TRUNC;
 175
 176         if ((fd = open(pathbuf, flags, S_IRUSR | S_IWUSR)) < 0)
 177                 exit(EXIT_FAILURE);
 178         if (use_colors) {
 179                 char *tmp = color("#888888");
 180                 if (write(fd, tmp, strlen(tmp)) != (ssize_t)strlen(tmp))
 181                         exit(EXIT_FAILURE);
 182         }
 183         (void)close(fd);
 184 }
 185
 186 /*
 187  * Waits until wmii_path/rbar exists (= the filesystem gets mounted),
 188  * cleans up all files and creates the needed files
 189  *
 190  */
 191 static void setup(void) {
 192         unsigned int i;
 193         char pathbuf[512];
 194
 195 #ifndef DZEN
 196         struct stat statbuf;
 197         /* Wait until wmii_path/rbar exists */
 198         for (; stat(wmii_path, &statbuf) < 0; sleep(interval));
 199 #endif
 200
 201         cleanup_rbar_dir();
 202         if (wlan_interface)
 203                 create_file(concat(order[ORDER_WLAN],"wlan"));
 204         if (eth_interface)
 205                 create_file(concat(order[ORDER_ETH],"eth"));
 206         if (get_cpu_temperature)
 207                 create_file(concat(order[ORDER_CPU_TEMPERATURE], "cpu_temperature"));
 208         create_file(concat(order[ORDER_LOAD],"load"));
 209         if (time_format)
 210                 create_file(concat(order[ORDER_TIME],"time"));
 211         for (i = 0; i < num_run_watches; i += 2) {
 212                 snprintf(pathbuf, sizeof(pathbuf), "%s%s", order[ORDER_RUN], run_watches[i]);
 213                 create_file(pathbuf);
 214         }
 215 }
 216
 217 /*
 218  * Writes the given message in the corresponding file in wmii's /rbar directory
 219  *
 220  */
 221 static void write_to_statusbar(const char *name, const char *message, bool final_entry) {
 222 #ifdef DZEN
 223         if (final_entry) {
 224                 (void)printf("%s^p(6)\n", message);
 225                 fflush(stdout);
 226                 return;
 227         }
 228         (void)printf("%s" BAR, message);
 229         return;
 230 #endif
 231
 232         char pathbuf[strlen(wmii_path)+256+1];
 233         int fd;
 234
 235         (void)snprintf(pathbuf, sizeof(pathbuf), "%s%s", wmii_path, name);
 236         if ((fd = open(pathbuf, O_RDWR)) == -1) {
 237                 /* Try to re-setup stuff and just continue */
 238                 setup();
 239                 return;
 240         }
 241         if (write(fd, message, strlen(message)) != (ssize_t)strlen(message))
 242                 exit(EXIT_FAILURE);
 243         (void)close(fd);
 244 }
 245
 246 /*
 247  * Writes an errormessage to statusbar
 248  *
 249  */
 250 static void write_error_to_statusbar(const char *message) {
 251         cleanup_rbar_dir();
 252         create_file("error");
 253         write_to_statusbar("error", message, true);
 254 }
 255
 256 /*
 257  * Write errormessage to statusbar and exit
 258  *
 259  */
 260 void die(const char *fmt, ...) {
 261         char buffer[512];
 262         va_list ap;
 263         va_start(ap, fmt);
 264         (void)vsnprintf(buffer, sizeof(buffer), fmt, ap);
 265         va_end(ap);
 266
 267         if (wmii_path != NULL)
 268                 write_error_to_statusbar(buffer);
 269         else
 270                 fprintf(stderr, "%s", buffer);
 271         exit(EXIT_FAILURE);
 272 }
 273
 274 /*
 275  * Skip the given character for exactly 'amount' times, returns
 276  * a pointer to the first non-'character' character in 'input'.
 277  *
 278  */
 279 static char *skip_character(char *input, char character, int amount) {
 280         char *walk;
 281         size_t len = strlen(input);
 282         int blanks = 0;
 283
 284         for (walk = input; ((size_t)(walk - input) < len) && (blanks < amount); walk++)
 285                 if (*walk == character)
 286                         blanks++;
 287
 288         return (walk == input ? walk : walk-1);
 289 }
 290
 291 /*
 292  * Get battery information from /sys. Note that it uses the design capacity to
 293  * calculate the percentage, not the last full capacity, so you can see how
 294  * worn off your battery is.
 295  *
 296  */
 297 static char *get_battery_info(struct battery *bat) {
 298         char buf[1024];
 299         static char part[512];
 300         char *walk, *last;
 301         int fd;
 302         int full_design = -1,
 303             remaining = -1,
 304             present_rate = -1;
 305         charging_status_t status = CS_DISCHARGING;
 306
 307         if ((fd = open(bat->path, O_RDONLY)) == -1)
 308                 return "No battery found";
 309
 310         memset(part, 0, sizeof(part));
 311         (void)read(fd, buf, sizeof(buf));
 312         for (walk = buf, last = buf; (walk-buf) < 1024; walk++) {
 313                 if (*walk == '\n') {
 314                         last = walk+1;
 315                         continue;
 316                 }
 317
 318                 if (*walk != '=')
 319                         continue;
 320
 321                 if (BEGINS_WITH(last, "POWER_SUPPLY_ENERGY_NOW") ||
 322                     BEGINS_WITH(last, "POWER_SUPPLY_CHARGE_NOW"))
 323                         remaining = atoi(walk+1);
 324                 else if (BEGINS_WITH(last, "POWER_SUPPLY_CURRENT_NOW"))
 325                         present_rate = atoi(walk+1);
 326                 else if (BEGINS_WITH(last, "POWER_SUPPLY_STATUS=Charging"))
 327                         status = CS_CHARGING;
 328                 else if (BEGINS_WITH(last, "POWER_SUPPLY_STATUS=Full"))
 329                         status = CS_FULL;
 330                 else {
 331                         /* The only thing left is the full capacity */
 332                         if (bat->use_last_full) {
 333                                 if (!BEGINS_WITH(last, "POWER_SUPPLY_ENERGY_FULL") &&
 334                                     !BEGINS_WITH(last, "POWER_SUPPLY_CHARGE_FULL"))
 335                                         continue;
 336                         } else {
 337                                 if (!BEGINS_WITH(last, "POWER_SUPPLY_CHARGE_FULL_DESIGN") &&
 338                                     !BEGINS_WITH(last, "POWER_SUPPLY_ENERGY_FULL_DESIGN"))
 339                                         continue;
 340                         }
 341
 342                         full_design = atoi(walk+1);
 343                 }
 344         }
 345         (void)close(fd);
 346
 347         if ((full_design == 1) || (remaining == -1))
 348                 return part;
 349
 350         if (present_rate > 0) {
 351                 float remaining_time;
 352                 int seconds, hours, minutes;
 353                 if (status == CS_CHARGING)
 354                         remaining_time = ((float)full_design - (float)remaining) / (float)present_rate;
 355                 else if (status == CS_DISCHARGING)
 356                         remaining_time = ((float)remaining / (float)present_rate);
 357                 else remaining_time = 0;
 358
 359                 seconds = (int)(remaining_time * 3600.0);
 360                 hours = seconds / 3600;
 361                 seconds -= (hours * 3600);
 362                 minutes = seconds / 60;
 363                 seconds -= (minutes * 60);
 364
 365                 (void)snprintf(part, sizeof(part), "%s %.02f%% %02d:%02d:%02d",
 366                         (status == CS_CHARGING ? "CHR" :
 367                          (status == CS_DISCHARGING ? "BAT" : "FULL")),
 368                         (((float)remaining / (float)full_design) * 100),
 369                         max(hours, 0), max(minutes, 0), max(seconds, 0));
 370         } else {
 371                 (void)snprintf(part, sizeof(part), "%s %.02f%%",
 372                         (status == CS_CHARGING ? "CHR" :
 373                          (status == CS_DISCHARGING ? "BAT" : "FULL")),
 374                         (((float)remaining / (float)full_design) * 100));
 375         }
 376         return part;
 377 }
 378
 379 /*
 380  * Return the IP address for the given interface or "no IP" if the
 381  * interface is up and running but hasn't got an IP address yet
 382  *
 383  */
 384 static const char *get_ip_address(const char *interface) {
 385         static char part[512];
 386         struct ifreq ifr;
 387         struct sockaddr_in addr;
 388         socklen_t len = sizeof(struct sockaddr_in);
 389         memset(part, 0, sizeof(part));
 390
 391         /* First check if the interface is running */
 392         (void)strcpy(ifr.ifr_name, interface);
 393         if (ioctl(general_socket, SIOCGIFFLAGS, &ifr) < 0 ||
 394             !(ifr.ifr_flags & IFF_RUNNING))
 395                 return NULL;
 396
 397         /* Interface is up, get the IP address */
 398         (void)strcpy(ifr.ifr_name, interface);
 399         ifr.ifr_addr.sa_family = AF_INET;
 400         if (ioctl(general_socket, SIOCGIFADDR, &ifr) < 0)
 401                 return "no IP";
 402
 403         memcpy(&addr, &ifr.ifr_addr, len);
 404         (void)inet_ntop(AF_INET, &addr.sin_addr.s_addr, part, len);
 405         if (strlen(part) == 0)
 406                 (void)snprintf(part, sizeof(part), "no IP");
 407
 408         return part;
 409 }
 410
 411 /*
 412  * Just parses /proc/net/wireless looking for lines beginning with
 413  * wlan_interface, extracting the quality of the link and adding the
 414  * current IP address of wlan_interface.
 415  *
 416  */
 417 static char *get_wireless_info() {
 418         char buf[1024];
 419         static char part[512];
 420         char *interfaces;
 421         int fd;
 422         memset(buf, 0, sizeof(buf));
 423         memset(part, 0, sizeof(part));
 424
 425         if ((fd = open("/proc/net/wireless", O_RDONLY)) == -1)
 426                 die("Could not open /proc/net/wireless\n");
 427         (void)read(fd, buf, sizeof(buf));
 428         (void)close(fd);
 429
 430         interfaces = skip_character(buf, '\n', 1) + 1;
 431         while ((interfaces = skip_character(interfaces, '\n', 1)+1) < buf+strlen(buf)) {
 432                 while (isspace((int)*interfaces))
 433                         interfaces++;
 434                 if (!BEGINS_WITH(interfaces, wlan_interface))
 435                         continue;
 436                 int quality;
 437                 if (sscanf(interfaces, "%*[^:]: 0000 %d", &quality) != 1)
 438                         continue;
 439                 if ((quality == UCHAR_MAX) || (quality == 0)) {
 440                         if (use_colors)
 441                                 (void)snprintf(part, sizeof(part), "%sW: down", color("#FF0000"));
 442                         else (void)snprintf(part, sizeof(part), "W: down");
 443                 } else (void)snprintf(part, sizeof(part), "%sW: (%03d%%) %s",
 444                                 color("#00FF00"), quality, get_ip_address(wlan_interface));
 445                 return part;
 446         }
 447
 448         return part;
 449 }
 450
 451 /*
 452  * Combines ethernet IP addresses and speed (if requested) for displaying
 453  *
 454  */
 455 static char *get_eth_info() {
 456         static char part[512];
 457         const char *ip_address = get_ip_address(eth_interface);
 458         int ethspeed = 0;
 459
 460         if (get_ethspeed) {
 461 #ifdef LINUX
 462                 /* This code path requires root privileges */
 463                 struct ifreq ifr;
 464                 struct ethtool_cmd ecmd;
 465
 466                 ecmd.cmd = ETHTOOL_GSET;
 467                 (void)memset(&ifr, 0, sizeof(ifr));
 468                 ifr.ifr_data = (caddr_t)&ecmd;
 469                 (void)strcpy(ifr.ifr_name, eth_interface);
 470                 if (ioctl(general_socket, SIOCETHTOOL, &ifr) == 0)
 471                         ethspeed = (ecmd.speed == USHRT_MAX ? 0 : ecmd.speed);
 472                 else get_ethspeed = false;
 473 #endif
 474         }
 475
 476         if (ip_address == NULL)
 477                 (void)snprintf(part, sizeof(part), "E: down");
 478         else {
 479                 if (get_ethspeed)
 480                         (void)snprintf(part, sizeof(part), "E: %s (%d Mbit/s)", ip_address, ethspeed);
 481                 else (void)snprintf(part, sizeof(part), "E: %s", ip_address);
 482         }
 483
 484         return part;
 485 }
 486
 487 /*
 488  * Reads the CPU temperature from /sys/class/thermal/thermal_zone0/temp and
 489  * returns the temperature in degree celcius.
 490  *
 491  */
 492 static char *get_cpu_temperature_info() {
 493         static char part[16];
 494         char buf[16];
 495         int temp;
 496         int fd;
 497
 498         memset(buf, 0, sizeof(buf));
 499         memset(part, 0, sizeof(part));
 500
 501         if ((fd = open(thermal_zone, O_RDONLY)) == -1)
 502                 die("Could not open %s\n", thermal_zone);
 503         (void)read(fd, buf, sizeof(buf));
 504         (void)close(fd);
 505
 506         if (sscanf(buf, "%d", &temp) != 1)
 507                 (void)snprintf(part, sizeof(part), "T: ? C");
 508         else
 509                 (void)snprintf(part, sizeof(part), "T: %d C", (temp/1000));
 510
 511         return part;
 512 }
 513
 514 /*
 515  * Checks if the PID in path is still valid by checking:
 516  *  (Linux) if /proc/<pid> exists
 517  *  (NetBSD) if sysctl returns process infos for this pid
 518  *
 519  */
 520 static bool process_runs(const char *path) {
 521         char pidbuf[16];
 522         static glob_t globbuf;
 523         int fd;
 524         memset(pidbuf, 0, sizeof(pidbuf));
 525
 526         if (glob(path, GLOB_NOCHECK | GLOB_TILDE, NULL, &globbuf) < 0)
 527                 die("glob() failed\n");
 528         fd = open((globbuf.gl_pathc > 0 ? globbuf.gl_pathv[0] : path), O_RDONLY);
 529         globfree(&globbuf);
 530         if (fd < 0)
 531                 return false;
 532         (void)read(fd, pidbuf, sizeof(pidbuf));
 533         (void)close(fd);
 534
 535 #ifdef LINUX
 536         struct stat statbuf;
 537         char procbuf[512];
 538         (void)snprintf(procbuf, sizeof(procbuf), "/proc/%ld", strtol(pidbuf, NULL, 10));
 539         return (stat(procbuf, &statbuf) >= 0);
 540 #else
 541         /* TODO: correctly check for NetBSD. Evaluate if this runs on OpenBSD/FreeBSD */
 542         struct kinfo_proc info;
 543         size_t length = sizeof(struct kinfo_proc);
 544         int mib[4] = { CTL_KERN, KERN_PROC, KERN_PROC_PID, strtol(pidbuf, NULL, 10) };
 545         if (sysctl(mib, 4, &info, &length, NULL, 0) < 0)
 546                 return false;
 547         return (length != 0);
 548 #endif
 549 }
 550
 551 /*
 552  * Reads the configuration from the given file
 553  *
 554  */
 555 static int load_configuration(const char *configfile) {
 556         #define OPT(x) else if (strcasecmp(dest_name, x) == 0)
 557
 558         /* check if the file exists */
 559         struct stat buf;
 560         if (stat(configfile, &buf) < 0)
 561                 return -1;
 562
 563         int result = 0;
 564         FILE *handle = fopen(configfile, "r");
 565         if (handle == NULL)
 566                 die("Could not open configfile\n");
 567         char dest_name[512], dest_value[512], whole_buffer[1026];
 568
 569         while (!feof(handle)) {
 570                 char *ret;
 571                 if ((ret = fgets(whole_buffer, 1024, handle)) == whole_buffer) {
 572                         /* sscanf implicitly strips whitespace */
 573                         if (sscanf(whole_buffer, "%s %[^\n]", dest_name, dest_value) < 1)
 574                                 continue;
 575                 } else if (ret != NULL)
 576                         die("Could not read line in configuration file\n");
 577
 578                 /* skip comments and empty lines */
 579                 if (dest_name[0] == '#' || strlen(dest_name) < 3)
 580                         continue;
 581
 582                 OPT("wlan")
 583                         wlan_interface = strdup(dest_value);
 584                 OPT("eth")
 585                         eth_interface = strdup(dest_value);
 586                 OPT("time_format")
 587                         time_format = strdup(dest_value);
 588                 OPT("battery") {
 589                         struct battery *new = calloc(1, sizeof(struct battery));
 590                         if (new == NULL)
 591                                 die("Could not allocate memory\n");
 592                         if (asprintf(&(new->path), "/sys/class/power_supply/BAT%d/uevent", atoi(dest_value)) == -1)
 593                                 die("Could not build battery path\n");
 594
 595                         /* check if flags were specified for this battery */
 596                         if (strstr(dest_value, ",") != NULL) {
 597                                 char *flags = strstr(dest_value, ",");
 598                                 flags++;
 599                                 if (*flags == 'f')
 600                                         new->use_last_full = true;
 601                         }
 602                         SIMPLEQ_INSERT_TAIL(&batteries, new, batteries);
 603                 } OPT("color")
 604                         use_colors = true;
 605                 OPT("get_ethspeed")
 606                         get_ethspeed = true;
 607                 OPT("get_cpu_temperature") {
 608                         get_cpu_temperature = true;
 609                         if (strlen(dest_value) > 0) {
 610                                 if (asprintf(&thermal_zone, "/sys/class/thermal/thermal_zone%d/temp", atoi(dest_value)) == -1)
 611                                         die("Could not build thermal_zone path\n");
 612                         } else {
 613                                  if (asprintf(&thermal_zone, "/sys/class/thermal/thermal_zone0/temp") == -1)
 614                                         die("Could not build thermal_zone path\n");
 615                         }
 616                 } OPT("normcolors")
 617                         wmii_normcolors = strdup(dest_value);
 618                 OPT("interval")
 619                         interval = atoi(dest_value);
 620                 OPT("wmii_path")
 621                 {
 622 #ifndef DZEN
 623                         static glob_t globbuf;
 624                         struct stat stbuf;
 625                         if (glob(dest_value, GLOB_NOCHECK | GLOB_TILDE, NULL, &globbuf) < 0)
 626                                 die("glob() failed\n");
 627                         wmii_path = strdup(globbuf.gl_pathc > 0 ? globbuf.gl_pathv[0] : dest_value);
 628                         globfree(&globbuf);
 629
 630                         if ((stat(wmii_path, &stbuf)) == -1) {
 631                                 fprintf(stderr, "Warning: wmii_path contains an invalid path\n");
 632                                 free(wmii_path);
 633                                 wmii_path = strdup(dest_value);
 634                         }
 635                         if (wmii_path[strlen(wmii_path)-1] != '/')
 636                                 die("wmii_path is not terminated by /\n");
 637 #endif
 638                 }
 639                 OPT("run_watch")
 640                 {
 641                         char *name = strdup(dest_value);
 642                         char *path = name;
 643                         while (*path != ' ')
 644                                 path++;
 645                         *(path++) = '\0';
 646                         num_run_watches += 2;
 647                         run_watches = realloc(run_watches, sizeof(char*) * num_run_watches);
 648                         run_watches[num_run_watches-2] = name;
 649                         run_watches[num_run_watches-1] = path;
 650                 }
 651                 OPT("order")
 652                 {
 653                         #define SET_ORDER(opt, idx) { if (strcasecmp(token, opt) == 0) sprintf(order[idx], "%d", c++); }
 654                         char *walk, *token;
 655                         int c = 0;
 656                         walk = token = dest_value;
 657                         while (*walk != '\0') {
 658                                 while ((*walk != ',') && (*walk != '\0'))
 659                                         walk++;
 660                                 *(walk++) = '\0';
 661                                 SET_ORDER("run", ORDER_RUN);
 662                                 SET_ORDER("wlan", ORDER_WLAN);
 663                                 SET_ORDER("eth", ORDER_ETH);
 664                                 SET_ORDER("battery", ORDER_BATTERY);
 665                                 SET_ORDER("cpu_temperature", ORDER_CPU_TEMPERATURE);
 666                                 SET_ORDER("load", ORDER_LOAD);
 667                                 SET_ORDER("time", ORDER_TIME);
 668                                 token = walk;
 669                                 while (isspace((int)(*token)))
 670                                         token++;
 671                         }
 672                 }
 673                 else
 674                 {
 675                         result = -2;
 676                         die("Unknown configfile option: %s\n", dest_name);
 677                 }
 678         }
 679         fclose(handle);
 680
 681 #ifndef DZEN
 682         if (wmii_path == NULL)
 683                 exit(EXIT_FAILURE);
 684 #endif
 685
 686         return result;
 687 }
 688
 689 int main(int argc, char *argv[]) {
 690         char part[512],
 691              pathbuf[512];
 692         unsigned int i;
 693
 694         char *configfile = PREFIX "/etc/i3status.conf";
 695         int o, option_index = 0;
 696         struct option long_options[] = {
 697                 {"config", required_argument, 0, 'c'},
 698                 {"help", no_argument, 0, 'h'},
 699                 {0, 0, 0, 0}
 700         };
 701
 702         SIMPLEQ_INIT(&batteries);
 703
 704         while ((o = getopt_long(argc, argv, "c:h", long_options, &option_index)) != -1)
 705                 if ((char)o == 'c')
 706                         configfile = optarg;
 707                 else if ((char)o == 'h') {
 708                         printf("i3status (c) 2008-2009 Michael Stapelberg\n"
 709                                 "Syntax: %s [-c <configfile>]\n", argv[0]);
 710                         return 0;
 711                 }
 712
 713         if (load_configuration(configfile) < 0)
 714                 return EXIT_FAILURE;
 715
 716         setup();
 717
 718         if ((general_socket = socket(AF_INET, SOCK_DGRAM, 0)) == -1)
 719                 die("Could not create socket\n");
 720
 721         while (1) {
 722                 for (i = 0; i < num_run_watches; i += 2) {
 723                         bool running = process_runs(run_watches[i+1]);
 724                         if (use_colors)
 725                                 snprintf(part, sizeof(part), "%s%s: %s",
 726                                         (running ? color("#00FF00") : color("#FF0000")),
 727                                         run_watches[i],
 728                                         (running ? "yes" : "no"));
 729                         else snprintf(part, sizeof(part), "%s: %s", run_watches[i], (running ? "yes" : "no"));
 730                         snprintf(pathbuf, sizeof(pathbuf), "%s%s", order[ORDER_RUN], run_watches[i]);
 731                         write_to_statusbar(pathbuf, part, false);
 732                 }
 733
 734                 if (wlan_interface)
 735                         write_to_statusbar(concat(order[ORDER_WLAN], "wlan"), get_wireless_info(), false);
 736                 if (eth_interface)
 737                         write_to_statusbar(concat(order[ORDER_ETH], "eth"), get_eth_info(), false);
 738                 struct battery *current_battery;
 739                 SIMPLEQ_FOREACH(current_battery, &batteries, batteries) {
 740                         write_to_statusbar(concat(order[ORDER_BATTERY], "battery"), get_battery_info(current_battery), false);
 741                 }
 742                 if (get_cpu_temperature)
 743                         write_to_statusbar(concat(order[ORDER_CPU_TEMPERATURE], "cpu_temperature"), get_cpu_temperature_info(), false);
 744
 745                 /* Get load */
 746 #ifdef LINUX
 747                 int load_avg;
 748                 if ((load_avg = open("/proc/loadavg", O_RDONLY)) == -1)
 749                         die("Could not open /proc/loadavg\n");
 750                 (void)read(load_avg, part, sizeof(part));
 751                 (void)close(load_avg);
 752                 *skip_character(part, ' ', 3) = '\0';
 753 #else
 754                 /* TODO: correctly check for NetBSD, check if it works the same on *BSD */
 755                 struct loadavg load;
 756                 size_t length = sizeof(struct loadavg);
 757                 int mib[2] = { CTL_VM, VM_LOADAVG };
 758                 if (sysctl(mib, 2, &load, &length, NULL, 0) < 0)
 759                         die("Could not sysctl({ CTL_VM, VM_LOADAVG })\n");
 760                 double scale = load.fscale;
 761                 (void)snprintf(part, sizeof(part), "%.02f %.02f %.02f",
 762                                 (double)load.ldavg[0] / scale,
 763                                 (double)load.ldavg[1] / scale,
 764                                 (double)load.ldavg[2] / scale);
 765 #endif
 766                 write_to_statusbar(concat(order[ORDER_LOAD], "load"), part, !time_format);
 767
 768                 if (time_format) {
 769                         /* Get date & time */
 770                         time_t current_time = time(NULL);
 771                         struct tm *current_tm = localtime(&current_time);
 772                         (void)strftime(part, sizeof(part), time_format, current_tm);
 773                         write_to_statusbar(concat(order[ORDER_TIME], "time"), part, true);
 774                 }
 775
 776                 sleep(interval);
 777         }
 778 }