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