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 #include <signal.h>
  58
  59 #include "queue.h"
  60
  61 #ifdef LINUX
  62 #include <linux/ethtool.h>
  63 #include <linux/sockios.h>
  64 #else
  65 /* TODO: correctly check for *BSD */
  66 #include <sys/param.h>
  67 #include <sys/sysctl.h>
  68 #include <sys/resource.h>
  69 #endif
  70
  71 #include "i3status.h"
  72
  73 #define BAR "^fg(#333333)^p(5;-2)^ro(2)^p()^fg()^p(5)"
  74
  75 struct battery {
  76         char *path;
  77         /* Use last full capacity instead of design capacity */
  78         bool use_last_full;
  79         SIMPLEQ_ENTRY(battery) batteries;
  80 };
  81
  82 SIMPLEQ_HEAD(battery_head, battery) batteries;
  83
  84 /* socket file descriptor for general purposes */
  85 static int general_socket;
  86
  87 static const char *wlan_interface;
  88 static const char *eth_interface;
  89 static char *wmii_path;
  90 static const char *time_format;
  91 static bool use_colors;
  92 static bool get_ethspeed;
  93 static bool get_cpu_temperature;
  94 static char *thermal_zone;
  95 static const char *wmii_normcolors = "#222222 #333333";
  96 static char order[MAX_ORDER][2];
  97 static const char **run_watches;
  98 static unsigned int num_run_watches;
  99 static unsigned int interval = 1;
 100
 101 static int max(int a, int b) {
 102         return (a > b ? a : b);
 103 }
 104
 105 /*
 106  * This function just concats two strings in place, it should only be used
 107  * for concatting order to the name of a file or concatting color codes.
 108  * Otherwise, the buffer size would have to be increased.
 109  *
 110  */
 111 static char *concat(const char *str1, const char *str2) {
 112         static char concatbuf[32];
 113         (void)snprintf(concatbuf, sizeof(concatbuf), "%s%s", str1, str2);
 114         return concatbuf;
 115 }
 116
 117 /*
 118  * Returns the correct color format for dzen (^fg(color)) or wmii (color <normcolors>)
 119  *
 120  */
 121 static char *color(const char *colorstr) {
 122         static char colorbuf[32];
 123 #ifdef DZEN
 124         (void)snprintf(colorbuf, sizeof(colorbuf), "^fg(%s)", colorstr);
 125 #else
 126         (void)snprintf(colorbuf, sizeof(colorbuf), "%s %s ", colorstr, wmii_normcolors);
 127 #endif
 128         return colorbuf;
 129 }
 130
 131 /*
 132  * Cleans wmii's /rbar directory by deleting all regular files
 133  *
 134  */
 135 static void cleanup_rbar_dir() {
 136 #ifdef DZEN
 137         return;
 138 #endif
 139         struct dirent *ent;
 140         DIR *dir;
 141         char pathbuf[strlen(wmii_path)+256+1];
 142
 143         if ((dir = opendir(wmii_path)) == NULL)
 144                 exit(EXIT_FAILURE);
 145
 146         while ((ent = readdir(dir)) != NULL) {
 147                 if (ent->d_type == DT_REG) {
 148                         (void)snprintf(pathbuf, sizeof(pathbuf), "%s%s", wmii_path, ent->d_name);
 149                         if (unlink(pathbuf) == -1)
 150                                 exit(EXIT_FAILURE);
 151                 }
 152         }
 153
 154         (void)closedir(dir);
 155 }
 156
 157 /*
 158  * Creates the specified file in wmii's /rbar directory with
 159  * correct modes and initializes colors if colormode is enabled
 160  *
 161  */
 162 static void create_file(const char *name) {
 163 #ifdef DZEN
 164         return;
 165 #endif
 166         char pathbuf[strlen(wmii_path)+256+1];
 167         int fd;
 168         int flags = O_CREAT | O_WRONLY;
 169         struct stat statbuf;
 170
 171         (void)snprintf(pathbuf, sizeof(pathbuf), "%s%s", wmii_path, name);
 172
 173         /* Overwrite file's contents if it exists */
 174         if (stat(pathbuf, &statbuf) >= 0)
 175                 flags |= O_TRUNC;
 176
 177         if ((fd = open(pathbuf, flags, S_IRUSR | S_IWUSR)) < 0)
 178                 exit(EXIT_FAILURE);
 179         if (use_colors) {
 180                 char *tmp = color("#888888");
 181                 if (write(fd, tmp, strlen(tmp)) != (ssize_t)strlen(tmp))
 182                         exit(EXIT_FAILURE);
 183         }
 184         (void)close(fd);
 185 }
 186
 187 /*
 188  * Waits until wmii_path/rbar exists (= the filesystem gets mounted),
 189  * cleans up all files and creates the needed files
 190  *
 191  */
 192 static void setup(void) {
 193         unsigned int i;
 194         char pathbuf[512];
 195
 196 #ifndef DZEN
 197         struct stat statbuf;
 198         /* Wait until wmii_path/rbar exists */
 199         for (; stat(wmii_path, &statbuf) < 0; sleep(interval));
 200 #endif
 201
 202         cleanup_rbar_dir();
 203         if (wlan_interface)
 204                 create_file(concat(order[ORDER_WLAN],"wlan"));
 205         if (eth_interface)
 206                 create_file(concat(order[ORDER_ETH],"eth"));
 207         if (get_cpu_temperature)
 208                 create_file(concat(order[ORDER_CPU_TEMPERATURE], "cpu_temperature"));
 209         create_file(concat(order[ORDER_LOAD],"load"));
 210         if (time_format)
 211                 create_file(concat(order[ORDER_TIME],"time"));
 212         for (i = 0; i < num_run_watches; i += 2) {
 213                 snprintf(pathbuf, sizeof(pathbuf), "%s%s", order[ORDER_RUN], run_watches[i]);
 214                 create_file(pathbuf);
 215         }
 216 }
 217
 218 /*
 219  * Writes the given message in the corresponding file in wmii's /rbar directory
 220  *
 221  */
 222 static void write_to_statusbar(const char *name, const char *message, bool final_entry) {
 223 #ifdef DZEN
 224         if (final_entry) {
 225                 if (printf("%s^p(6)\n", message) < 0) {
 226                         perror("printf");
 227                         exit(1);
 228                 }
 229
 230                 fflush(stdout);
 231                 return;
 232         }
 233         if (printf("%s" BAR, message) < 0) {
 234                 perror("printf");
 235                 exit(1);
 236         }
 237         return;
 238 #endif
 239
 240         char pathbuf[strlen(wmii_path)+256+1];
 241         int fd;
 242
 243         (void)snprintf(pathbuf, sizeof(pathbuf), "%s%s", wmii_path, name);
 244         if ((fd = open(pathbuf, O_RDWR)) == -1) {
 245                 /* Try to re-setup stuff and just continue */
 246                 setup();
 247                 return;
 248         }
 249         if (write(fd, message, strlen(message)) != (ssize_t)strlen(message))
 250                 exit(EXIT_FAILURE);
 251         (void)close(fd);
 252 }
 253
 254 /*
 255  * Writes an errormessage to statusbar
 256  *
 257  */
 258 static void write_error_to_statusbar(const char *message) {
 259         cleanup_rbar_dir();
 260         create_file("error");
 261         write_to_statusbar("error", message, true);
 262 }
 263
 264 /*
 265  * Write errormessage to statusbar and exit
 266  *
 267  */
 268 void die(const char *fmt, ...) {
 269         char buffer[512];
 270         va_list ap;
 271         va_start(ap, fmt);
 272         (void)vsnprintf(buffer, sizeof(buffer), fmt, ap);
 273         va_end(ap);
 274
 275         if (wmii_path != NULL)
 276                 write_error_to_statusbar(buffer);
 277         else
 278                 fprintf(stderr, "%s", buffer);
 279         exit(EXIT_FAILURE);
 280 }
 281
 282 /*
 283  * Skip the given character for exactly 'amount' times, returns
 284  * a pointer to the first non-'character' character in 'input'.
 285  *
 286  */
 287 static char *skip_character(char *input, char character, int amount) {
 288         char *walk;
 289         size_t len = strlen(input);
 290         int blanks = 0;
 291
 292         for (walk = input; ((size_t)(walk - input) < len) && (blanks < amount); walk++)
 293                 if (*walk == character)
 294                         blanks++;
 295
 296         return (walk == input ? walk : walk-1);
 297 }
 298
 299 /*
 300  * Get battery information from /sys. Note that it uses the design capacity to
 301  * calculate the percentage, not the last full capacity, so you can see how
 302  * worn off your battery is.
 303  *
 304  */
 305 static char *get_battery_info(struct battery *bat) {
 306         char buf[1024];
 307         static char part[512];
 308         char *walk, *last;
 309         int fd;
 310         int full_design = -1,
 311             remaining = -1,
 312             present_rate = -1;
 313         charging_status_t status = CS_DISCHARGING;
 314
 315         if ((fd = open(bat->path, O_RDONLY)) == -1)
 316                 return "No battery found";
 317
 318         memset(part, 0, sizeof(part));
 319         (void)read(fd, buf, sizeof(buf));
 320         for (walk = buf, last = buf; (walk-buf) < 1024; walk++) {
 321                 if (*walk == '\n') {
 322                         last = walk+1;
 323                         continue;
 324                 }
 325
 326                 if (*walk != '=')
 327                         continue;
 328
 329                 if (BEGINS_WITH(last, "POWER_SUPPLY_ENERGY_NOW") ||
 330                     BEGINS_WITH(last, "POWER_SUPPLY_CHARGE_NOW"))
 331                         remaining = atoi(walk+1);
 332                 else if (BEGINS_WITH(last, "POWER_SUPPLY_CURRENT_NOW"))
 333                         present_rate = atoi(walk+1);
 334                 else if (BEGINS_WITH(last, "POWER_SUPPLY_STATUS=Charging"))
 335                         status = CS_CHARGING;
 336                 else if (BEGINS_WITH(last, "POWER_SUPPLY_STATUS=Full"))
 337                         status = CS_FULL;
 338                 else {
 339                         /* The only thing left is the full capacity */
 340                         if (bat->use_last_full) {
 341                                 if (!BEGINS_WITH(last, "POWER_SUPPLY_ENERGY_FULL") &&
 342                                     !BEGINS_WITH(last, "POWER_SUPPLY_CHARGE_FULL"))
 343                                         continue;
 344                         } else {
 345                                 if (!BEGINS_WITH(last, "POWER_SUPPLY_CHARGE_FULL_DESIGN") &&
 346                                     !BEGINS_WITH(last, "POWER_SUPPLY_ENERGY_FULL_DESIGN"))
 347                                         continue;
 348                         }
 349
 350                         full_design = atoi(walk+1);
 351                 }
 352         }
 353         (void)close(fd);
 354
 355         if ((full_design == 1) || (remaining == -1))
 356                 return part;
 357
 358         if (present_rate > 0) {
 359                 float remaining_time;
 360                 int seconds, hours, minutes;
 361                 if (status == CS_CHARGING)
 362                         remaining_time = ((float)full_design - (float)remaining) / (float)present_rate;
 363                 else if (status == CS_DISCHARGING)
 364                         remaining_time = ((float)remaining / (float)present_rate);
 365                 else remaining_time = 0;
 366
 367                 seconds = (int)(remaining_time * 3600.0);
 368                 hours = seconds / 3600;
 369                 seconds -= (hours * 3600);
 370                 minutes = seconds / 60;
 371                 seconds -= (minutes * 60);
 372
 373                 (void)snprintf(part, sizeof(part), "%s %.02f%% %02d:%02d:%02d",
 374                         (status == CS_CHARGING ? "CHR" :
 375                          (status == CS_DISCHARGING ? "BAT" : "FULL")),
 376                         (((float)remaining / (float)full_design) * 100),
 377                         max(hours, 0), max(minutes, 0), max(seconds, 0));
 378         } else {
 379                 (void)snprintf(part, sizeof(part), "%s %.02f%%",
 380                         (status == CS_CHARGING ? "CHR" :
 381                          (status == CS_DISCHARGING ? "BAT" : "FULL")),
 382                         (((float)remaining / (float)full_design) * 100));
 383         }
 384         return part;
 385 }
 386
 387 /*
 388  * Return the IP address for the given interface or "no IP" if the
 389  * interface is up and running but hasn't got an IP address yet
 390  *
 391  */
 392 static const char *get_ip_address(const char *interface) {
 393         static char part[512];
 394         struct ifreq ifr;
 395         struct sockaddr_in addr;
 396         socklen_t len = sizeof(struct sockaddr_in);
 397         memset(part, 0, sizeof(part));
 398
 399         /* First check if the interface is running */
 400         (void)strcpy(ifr.ifr_name, interface);
 401         if (ioctl(general_socket, SIOCGIFFLAGS, &ifr) < 0 ||
 402             !(ifr.ifr_flags & IFF_RUNNING))
 403                 return NULL;
 404
 405         /* Interface is up, get the IP address */
 406         (void)strcpy(ifr.ifr_name, interface);
 407         ifr.ifr_addr.sa_family = AF_INET;
 408         if (ioctl(general_socket, SIOCGIFADDR, &ifr) < 0)
 409                 return "no IP";
 410
 411         memcpy(&addr, &ifr.ifr_addr, len);
 412         (void)inet_ntop(AF_INET, &addr.sin_addr.s_addr, part, len);
 413         if (strlen(part) == 0)
 414                 (void)snprintf(part, sizeof(part), "no IP");
 415
 416         return part;
 417 }
 418
 419 /*
 420  * Just parses /proc/net/wireless looking for lines beginning with
 421  * wlan_interface, extracting the quality of the link and adding the
 422  * current IP address of wlan_interface.
 423  *
 424  */
 425 static char *get_wireless_info() {
 426         char buf[1024];
 427         static char part[512];
 428         char *interfaces;
 429         int fd;
 430         memset(buf, 0, sizeof(buf));
 431         memset(part, 0, sizeof(part));
 432
 433         if ((fd = open("/proc/net/wireless", O_RDONLY)) == -1)
 434                 die("Could not open /proc/net/wireless\n");
 435         (void)read(fd, buf, sizeof(buf));
 436         (void)close(fd);
 437
 438         interfaces = skip_character(buf, '\n', 1) + 1;
 439         while ((interfaces = skip_character(interfaces, '\n', 1)+1) < buf+strlen(buf)) {
 440                 while (isspace((int)*interfaces))
 441                         interfaces++;
 442                 if (!BEGINS_WITH(interfaces, wlan_interface))
 443                         continue;
 444                 int quality;
 445                 if (sscanf(interfaces, "%*[^:]: 0000 %d", &quality) != 1)
 446                         continue;
 447                 if ((quality == UCHAR_MAX) || (quality == 0)) {
 448                         if (use_colors)
 449                                 (void)snprintf(part, sizeof(part), "%sW: down", color("#FF0000"));
 450                         else (void)snprintf(part, sizeof(part), "W: down");
 451                 } else (void)snprintf(part, sizeof(part), "%sW: (%03d%%) %s",
 452                                 color("#00FF00"), quality, get_ip_address(wlan_interface));
 453                 return part;
 454         }
 455
 456         return part;
 457 }
 458
 459 /*
 460  * Combines ethernet IP addresses and speed (if requested) for displaying
 461  *
 462  */
 463 static char *get_eth_info() {
 464         static char part[512];
 465         const char *ip_address = get_ip_address(eth_interface);
 466         int ethspeed = 0;
 467
 468         if (get_ethspeed) {
 469 #ifdef LINUX
 470                 /* This code path requires root privileges */
 471                 struct ifreq ifr;
 472                 struct ethtool_cmd ecmd;
 473
 474                 ecmd.cmd = ETHTOOL_GSET;
 475                 (void)memset(&ifr, 0, sizeof(ifr));
 476                 ifr.ifr_data = (caddr_t)&ecmd;
 477                 (void)strcpy(ifr.ifr_name, eth_interface);
 478                 if (ioctl(general_socket, SIOCETHTOOL, &ifr) == 0)
 479                         ethspeed = (ecmd.speed == USHRT_MAX ? 0 : ecmd.speed);
 480                 else get_ethspeed = false;
 481 #endif
 482         }
 483
 484         if (ip_address == NULL)
 485                 (void)snprintf(part, sizeof(part), "E: down");
 486         else {
 487                 if (get_ethspeed)
 488                         (void)snprintf(part, sizeof(part), "E: %s (%d Mbit/s)", ip_address, ethspeed);
 489                 else (void)snprintf(part, sizeof(part), "E: %s", ip_address);
 490         }
 491
 492         return part;
 493 }
 494
 495 /*
 496  * Reads the CPU temperature from /sys/class/thermal/thermal_zone0/temp and
 497  * returns the temperature in degree celcius.
 498  *
 499  */
 500 static char *get_cpu_temperature_info() {
 501         static char part[16];
 502         char buf[16];
 503         int temp;
 504         int fd;
 505
 506         memset(buf, 0, sizeof(buf));
 507         memset(part, 0, sizeof(part));
 508
 509         if ((fd = open(thermal_zone, O_RDONLY)) == -1)
 510                 die("Could not open %s\n", thermal_zone);
 511         (void)read(fd, buf, sizeof(buf));
 512         (void)close(fd);
 513
 514         if (sscanf(buf, "%d", &temp) != 1)
 515                 (void)snprintf(part, sizeof(part), "T: ? C");
 516         else
 517                 (void)snprintf(part, sizeof(part), "T: %d C", (temp/1000));
 518
 519         return part;
 520 }
 521
 522 /*
 523  * Checks if the PID in path is still valid by checking:
 524  *  (Linux) if /proc/<pid> exists
 525  *  (NetBSD) if sysctl returns process infos for this pid
 526  *
 527  */
 528 static bool process_runs(const char *path) {
 529         char pidbuf[16];
 530         static glob_t globbuf;
 531         int fd;
 532         memset(pidbuf, 0, sizeof(pidbuf));
 533
 534         if (glob(path, GLOB_NOCHECK | GLOB_TILDE, NULL, &globbuf) < 0)
 535                 die("glob() failed\n");
 536         fd = open((globbuf.gl_pathc > 0 ? globbuf.gl_pathv[0] : path), O_RDONLY);
 537         globfree(&globbuf);
 538         if (fd < 0)
 539                 return false;
 540         (void)read(fd, pidbuf, sizeof(pidbuf));
 541         (void)close(fd);
 542
 543 #ifdef LINUX
 544         struct stat statbuf;
 545         char procbuf[512];
 546         (void)snprintf(procbuf, sizeof(procbuf), "/proc/%ld", strtol(pidbuf, NULL, 10));
 547         return (stat(procbuf, &statbuf) >= 0);
 548 #else
 549         /* TODO: correctly check for NetBSD. Evaluate if this runs on OpenBSD/FreeBSD */
 550         struct kinfo_proc info;
 551         size_t length = sizeof(struct kinfo_proc);
 552         int mib[4] = { CTL_KERN, KERN_PROC, KERN_PROC_PID, strtol(pidbuf, NULL, 10) };
 553         if (sysctl(mib, 4, &info, &length, NULL, 0) < 0)
 554                 return false;
 555         return (length != 0);
 556 #endif
 557 }
 558
 559 /*
 560  * Reads the configuration from the given file
 561  *
 562  */
 563 static int load_configuration(const char *configfile) {
 564         #define OPT(x) else if (strcasecmp(dest_name, x) == 0)
 565
 566         /* check if the file exists */
 567         struct stat buf;
 568         if (stat(configfile, &buf) < 0)
 569                 return -1;
 570
 571         int result = 0;
 572         FILE *handle = fopen(configfile, "r");
 573         if (handle == NULL)
 574                 die("Could not open configfile\n");
 575         char dest_name[512], dest_value[512], whole_buffer[1026];
 576
 577         while (!feof(handle)) {
 578                 char *ret;
 579                 if ((ret = fgets(whole_buffer, 1024, handle)) == whole_buffer) {
 580                         /* sscanf implicitly strips whitespace */
 581                         if (sscanf(whole_buffer, "%s %[^\n]", dest_name, dest_value) < 1)
 582                                 continue;
 583                 } else if (ret != NULL)
 584                         die("Could not read line in configuration file\n");
 585
 586                 /* skip comments and empty lines */
 587                 if (dest_name[0] == '#' || strlen(dest_name) < 3)
 588                         continue;
 589
 590                 OPT("wlan")
 591                         wlan_interface = strdup(dest_value);
 592                 OPT("eth")
 593                         eth_interface = strdup(dest_value);
 594                 OPT("time_format")
 595                         time_format = strdup(dest_value);
 596                 OPT("battery") {
 597                         struct battery *new = calloc(1, sizeof(struct battery));
 598                         if (new == NULL)
 599                                 die("Could not allocate memory\n");
 600                         if (asprintf(&(new->path), "/sys/class/power_supply/BAT%d/uevent", atoi(dest_value)) == -1)
 601                                 die("Could not build battery path\n");
 602
 603                         /* check if flags were specified for this battery */
 604                         if (strstr(dest_value, ",") != NULL) {
 605                                 char *flags = strstr(dest_value, ",");
 606                                 flags++;
 607                                 if (*flags == 'f')
 608                                         new->use_last_full = true;
 609                         }
 610                         SIMPLEQ_INSERT_TAIL(&batteries, new, batteries);
 611                 } OPT("color")
 612                         use_colors = true;
 613                 OPT("get_ethspeed")
 614                         get_ethspeed = true;
 615                 OPT("get_cpu_temperature") {
 616                         get_cpu_temperature = true;
 617                         if (strlen(dest_value) > 0) {
 618                                 if (asprintf(&thermal_zone, "/sys/class/thermal/thermal_zone%d/temp", atoi(dest_value)) == -1)
 619                                         die("Could not build thermal_zone path\n");
 620                         } else {
 621                                  if (asprintf(&thermal_zone, "/sys/class/thermal/thermal_zone0/temp") == -1)
 622                                         die("Could not build thermal_zone path\n");
 623                         }
 624                 } OPT("normcolors")
 625                         wmii_normcolors = strdup(dest_value);
 626                 OPT("interval")
 627                         interval = atoi(dest_value);
 628                 OPT("wmii_path")
 629                 {
 630 #ifndef DZEN
 631                         static glob_t globbuf;
 632                         struct stat stbuf;
 633                         if (glob(dest_value, GLOB_NOCHECK | GLOB_TILDE, NULL, &globbuf) < 0)
 634                                 die("glob() failed\n");
 635                         wmii_path = strdup(globbuf.gl_pathc > 0 ? globbuf.gl_pathv[0] : dest_value);
 636                         globfree(&globbuf);
 637
 638                         if ((stat(wmii_path, &stbuf)) == -1) {
 639                                 fprintf(stderr, "Warning: wmii_path contains an invalid path\n");
 640                                 free(wmii_path);
 641                                 wmii_path = strdup(dest_value);
 642                         }
 643                         if (wmii_path[strlen(wmii_path)-1] != '/')
 644                                 die("wmii_path is not terminated by /\n");
 645 #endif
 646                 }
 647                 OPT("run_watch")
 648                 {
 649                         char *name = strdup(dest_value);
 650                         char *path = name;
 651                         while (*path != ' ')
 652                                 path++;
 653                         *(path++) = '\0';
 654                         num_run_watches += 2;
 655                         run_watches = realloc(run_watches, sizeof(char*) * num_run_watches);
 656                         run_watches[num_run_watches-2] = name;
 657                         run_watches[num_run_watches-1] = path;
 658                 }
 659                 OPT("order")
 660                 {
 661                         #define SET_ORDER(opt, idx) { if (strcasecmp(token, opt) == 0) sprintf(order[idx], "%d", c++); }
 662                         char *walk, *token;
 663                         int c = 0;
 664                         walk = token = dest_value;
 665                         while (*walk != '\0') {
 666                                 while ((*walk != ',') && (*walk != '\0'))
 667                                         walk++;
 668                                 *(walk++) = '\0';
 669                                 SET_ORDER("run", ORDER_RUN);
 670                                 SET_ORDER("wlan", ORDER_WLAN);
 671                                 SET_ORDER("eth", ORDER_ETH);
 672                                 SET_ORDER("battery", ORDER_BATTERY);
 673                                 SET_ORDER("cpu_temperature", ORDER_CPU_TEMPERATURE);
 674                                 SET_ORDER("load", ORDER_LOAD);
 675                                 SET_ORDER("time", ORDER_TIME);
 676                                 token = walk;
 677                                 while (isspace((int)(*token)))
 678                                         token++;
 679                         }
 680                 }
 681                 else
 682                 {
 683                         result = -2;
 684                         die("Unknown configfile option: %s\n", dest_name);
 685                 }
 686         }
 687         fclose(handle);
 688
 689 #ifndef DZEN
 690         if (wmii_path == NULL)
 691                 exit(EXIT_FAILURE);
 692 #endif
 693
 694         return result;
 695 }
 696
 697 /*
 698  * Exit upon SIGPIPE because when we have nowhere to write to, gathering
 699  * system information is pointless.
 700  *
 701  */
 702 void sigpipe(int signum) {
 703         fprintf(stderr, "Received SIGPIPE, exiting\n");
 704         exit(1);
 705 }
 706
 707 int main(int argc, char *argv[]) {
 708         char part[512],
 709              pathbuf[512];
 710         unsigned int i;
 711
 712         char *configfile = PREFIX "/etc/i3status.conf";
 713         int o, option_index = 0;
 714         struct option long_options[] = {
 715                 {"config", required_argument, 0, 'c'},
 716                 {"help", no_argument, 0, 'h'},
 717                 {0, 0, 0, 0}
 718         };
 719
 720         struct sigaction action;
 721         memset(&action, 0, sizeof(struct sigaction));
 722         action.sa_handler = sigpipe;
 723         sigaction(SIGPIPE, &action, NULL);
 724
 725         SIMPLEQ_INIT(&batteries);
 726
 727         while ((o = getopt_long(argc, argv, "c:h", long_options, &option_index)) != -1)
 728                 if ((char)o == 'c')
 729                         configfile = optarg;
 730                 else if ((char)o == 'h') {
 731                         printf("i3status (c) 2008-2009 Michael Stapelberg\n"
 732                                 "Syntax: %s [-c <configfile>]\n", argv[0]);
 733                         return 0;
 734                 }
 735
 736         if (load_configuration(configfile) < 0)
 737                 return EXIT_FAILURE;
 738
 739         setup();
 740
 741         if ((general_socket = socket(AF_INET, SOCK_DGRAM, 0)) == -1)
 742                 die("Could not create socket\n");
 743
 744         while (1) {
 745                 for (i = 0; i < num_run_watches; i += 2) {
 746                         bool running = process_runs(run_watches[i+1]);
 747                         if (use_colors)
 748                                 snprintf(part, sizeof(part), "%s%s: %s",
 749                                         (running ? color("#00FF00") : color("#FF0000")),
 750                                         run_watches[i],
 751                                         (running ? "yes" : "no"));
 752                         else snprintf(part, sizeof(part), "%s: %s", run_watches[i], (running ? "yes" : "no"));
 753                         snprintf(pathbuf, sizeof(pathbuf), "%s%s", order[ORDER_RUN], run_watches[i]);
 754                         write_to_statusbar(pathbuf, part, false);
 755                 }
 756
 757                 if (wlan_interface)
 758                         write_to_statusbar(concat(order[ORDER_WLAN], "wlan"), get_wireless_info(), false);
 759                 if (eth_interface)
 760                         write_to_statusbar(concat(order[ORDER_ETH], "eth"), get_eth_info(), false);
 761                 struct battery *current_battery;
 762                 SIMPLEQ_FOREACH(current_battery, &batteries, batteries) {
 763                         write_to_statusbar(concat(order[ORDER_BATTERY], "battery"), get_battery_info(current_battery), false);
 764                 }
 765                 if (get_cpu_temperature)
 766                         write_to_statusbar(concat(order[ORDER_CPU_TEMPERATURE], "cpu_temperature"), get_cpu_temperature_info(), false);
 767
 768                 /* Get load */
 769 #ifdef LINUX
 770                 int load_avg;
 771                 if ((load_avg = open("/proc/loadavg", O_RDONLY)) == -1)
 772                         die("Could not open /proc/loadavg\n");
 773                 (void)read(load_avg, part, sizeof(part));
 774                 (void)close(load_avg);
 775                 *skip_character(part, ' ', 3) = '\0';
 776 #else
 777                 /* TODO: correctly check for NetBSD, check if it works the same on *BSD */
 778                 struct loadavg load;
 779                 size_t length = sizeof(struct loadavg);
 780                 int mib[2] = { CTL_VM, VM_LOADAVG };
 781                 if (sysctl(mib, 2, &load, &length, NULL, 0) < 0)
 782                         die("Could not sysctl({ CTL_VM, VM_LOADAVG })\n");
 783                 double scale = load.fscale;
 784                 (void)snprintf(part, sizeof(part), "%.02f %.02f %.02f",
 785                                 (double)load.ldavg[0] / scale,
 786                                 (double)load.ldavg[1] / scale,
 787                                 (double)load.ldavg[2] / scale);
 788 #endif
 789                 write_to_statusbar(concat(order[ORDER_LOAD], "load"), part, !time_format);
 790
 791                 if (time_format) {
 792                         /* Get date & time */
 793                         time_t current_time = time(NULL);
 794                         struct tm *current_tm = localtime(&current_time);
 795                         (void)strftime(part, sizeof(part), time_format, current_tm);
 796                         write_to_statusbar(concat(order[ORDER_TIME], "time"), part, true);
 797                 }
 798
 799                 sleep(interval);
 800         }
 801 }