src/interfaces/hostnamed/hostnamed.c

   1 /*
   2  * Copyright (c) 2014 Ian Sutton <ian@kremlin.cc>
   3  *
   4  * Permission to use, copy, modify, and distribute this software for any
   5  * purpose with or without fee is hereby granted, provided that the above
   6  * copyright notice and this permission notice appear in all copies.
   7  *
   8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  11  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  13  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  14  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  15  */
  16
  17 #include <unistd.h>
  18 #include <limits.h>
  19 #include <signal.h>
  20 #include <string.h>
  21
  22 #include <sys/param.h>
  23 #include <sys/sysctl.h>
  24 #include <sys/sensors.h>
  25 #include <sys/ioctl.h>
  26 #include <sys/utsname.h>
  27
  28 #include <machine/apmvar.h>
  29
  30 #include <glib/gprintf.h>
  31 #include <glib-unix.h>
  32 #include <polkit/polkit.h>
  33
  34 #include "hostnamed-gen.h"
  35 #include "hostnamed.h"
  36
  37 /* format: {
  38  *           (1) string to be matched against runtime machine's sysctl output.
  39  *               can be either the exact string or a substring contained
  40  *               within sysctl strings. no "guesses" here, a match should
  41  *               reliably indicate the chassis/icon.
  42  *
  43  *           (2) string describing chassis type divulged by (1).
  44  *               must be one of "desktop", "laptop", "server",
  45  *               "tablet", "handset", "vm", "container" or NULL
  46  *               if only icon string can be ascertained. "vm" refers
  47  *               to operating systems running on baremetal hypervisors
  48  *               (hardware virtualization, like XEN) while "container"
  49  *               refers to OSs running on shared hypervisors like
  50  *               virtualbox or VMware. consider the distinction carefully
  51  *               as common virtualization software like KVM may share
  52  *               characteristics of both "vm" and "container" types.
  53  *
  54  *           (3) string specifying icon to use. follows XDG icon spec.
  55  *               see http://standards.freedesktop.org/icon-naming-spec/icon-naming-spec-latest.html
  56  *               for allowed strings.
  57  *
  58  *           (4) chassis precedence bit. TRUE if (2) is defined and
  59  *               we're certain it is the proper string. FALSE in the
  60  *               circumstance (2) may be the correct string, unless
  61  *               a match with this bit set to TRUE overrides it.
  62  *               if (2) is NULL, this bit is inconsequential.
  63  *
  64  *           (5) icon precedence bit. see previous definition.
  65  *         }                                               */
  66 struct SYSCTL_LOOKUP_TABLE {
  67     gchar    *match_string;
  68     gchar    *chassis;
  69     gchar    *icon;
  70     gboolean chassis_precedence;
  71     gboolean icon_precedence;
  72 };
  73
  74 GPtrArray *hostnamed_freeable;
  75 Hostname1 *hostnamed_interf;
  76
  77 GMainLoop *hostnamed_loop;
  78
  79 guint bus_descriptor;
  80 gboolean dbus_interface_exported; /* reliable because of gdbus operational guarantees */
  81
  82 gchar *HOSTNAME, *STATIC_HOSTNAME, *PRETTY_HOSTNAME;
  83 gchar *CHASSIS, *ICON;
  84 gchar *KERN_NAME, *KERN_RELEASE, *KERN_VERS, *OS_CPENAME;
  85
  86 /* TODO no specific vm or laptop icon in gnome
  87  * NOTE paravirtualization on xen is only available for linuxes right now
  88  * dmesg on linux systems reveals xen and virtualization method (HVM or PVM)
  89  * but we will worry about those later */
  90
  91 /* add any sysctl strings that suggest virtualization here */
  92 const struct SYSCTL_LOOKUP_TABLE chassis_indicator_table[] =
  93 {
  94     { "QEMU Virtual CPU",        "vm",        NULL,              FALSE, FALSE }, /* could be QEMU running in userspace or as part of KVM */
  95     { "KVM",                     "vm",        "drive-multidisk", FALSE, FALSE },
  96     { "SmartDC HVM",             "vm",        "drive-multidisk", TRUE,  TRUE  }, /* illumos-joyent kvm */
  97     { "VirtualBox",              "vm",        "drive-multidisk", TRUE,  TRUE  },
  98     { "VMware, Inc.",            "vm",        "drive-multidisk", TRUE,  TRUE  },
  99     { "VMware Virtual Platform", "vm",        "drive-multidisk", TRUE,  TRUE  },
 100     { "Parallels",               "vm",        "drive-multidisk", TRUE,  TRUE  }, /* need verification */
 101     { "Xen",                     "vm",        "drive-multidisk", FALSE, FALSE }
 102 }; /* TODO: chroots, etc. are the actual "containers", add them */
 103
 104 /* archs to check against when determining if machine is server */
 105 const gchar *server_archs[] = {
 106     "hppa",
 107     "sparc",
 108     "sparc64"
 109 };
 110
 111 /* --- begin method/property/dbus signal code --- */
 112
 113 /* TODO the extra boolean passed to these funcs is for policykit auth */
 114 /* TODO complete call with error, message, etc */
 115 static gboolean
 116 on_handle_set_hostname(Hostname1 *hn1_passed_interf,
 117                        GDBusMethodInvocation *invoc,
 118                        const gchar *greet,
 119                        gpointer data) {
 120     GVariant *params;
 121     gchar *proposed_hostname, *valid_hostname_buf;
 122     gboolean policykit_auth, ret;
 123     size_t check_length, bad_length;
 124
 125     bad_length = MAXHOSTNAMELEN + 1;
 126     proposed_hostname = NULL;
 127     ret = FALSE;
 128
 129     params = g_dbus_method_invocation_get_parameters(invoc);
 130     g_variant_get(params, "(sb)", &proposed_hostname, &policykit_auth);
 131
 132     if(proposed_hostname && (valid_hostname_buf = g_hostname_to_ascii(proposed_hostname))) {
 133
 134         check_length = strnlen(proposed_hostname, bad_length);
 135
 136         if(check_length < bad_length && !sethostname(proposed_hostname, check_length))
 137             ret = TRUE;
 138     }
 139
 140     if(ret)
 141         hostname1_complete_set_hostname(hn1_passed_interf, invoc);
 142
 143     if(proposed_hostname)
 144         g_free(proposed_hostname);
 145     if(valid_hostname_buf)
 146         g_free(valid_hostname_buf);
 147
 148     return ret;
 149 }
 150
 151 static gboolean
 152 on_handle_set_static_hostname(Hostname1 *hn1_passed_interf,
 153                               GDBusMethodInvocation *invoc,
 154                               const gchar *greet,
 155                               gpointer data) {
 156     return FALSE;
 157 }
 158
 159 static gboolean
 160 on_handle_set_pretty_hostname(Hostname1 *hn1_passed_interf,
 161                               GDBusMethodInvocation *invoc,
 162                               const gchar *greet,
 163                               gpointer data) {
 164     return FALSE;
 165 }
 166
 167 static gboolean
 168 on_handle_set_chassis(Hostname1 *hn1_passed_interf,
 169                       GDBusMethodInvocation *invoc,
 170                       const gchar *greet,
 171                       gpointer data) {
 172     return FALSE;
 173 }
 174
 175 static gboolean
 176 on_handle_set_icon_name(Hostname1 *hn1_passed_interf,
 177                         GDBusMethodInvocation *invoc,
 178                         const gchar *greet,
 179                         gpointer data) {
 180     return FALSE;
 181 }
 182
 183 /* note: all hostnamed/hostname1's properties are read-only,
 184  * and do not need set_ functions, gdbus-codegen realized
 185  * this from the XML and handled the to-be error of trying
 186  * to set a read-only property's value
 187  */
 188
 189 const gchar *
 190 our_get_hostname() {
 191
 192     if(HOSTNAME)
 193         return HOSTNAME;
 194
 195     return "localhost";
 196 }
 197
 198 const gchar *
 199 our_get_static_hostname() {
 200
 201     if(STATIC_HOSTNAME)
 202         return STATIC_HOSTNAME;
 203     else if(HOSTNAME)
 204         return HOSTNAME;
 205
 206     return "localhost";
 207 }
 208
 209 const gchar *
 210 our_get_pretty_hostname() {
 211
 212     if(PRETTY_HOSTNAME)
 213         return PRETTY_HOSTNAME;
 214
 215     return "";
 216 }
 217
 218 const gchar *
 219 our_get_chassis() {
 220
 221    if(CHASSIS)
 222         return CHASSIS;
 223
 224     return "desktop"; /* this leads to the most generic beheivor in the unlikely case its returned */
 225 }
 226
 227 const gchar *
 228 our_get_icon_name() {
 229
 230     if(ICON)
 231         return ICON;
 232
 233     return "";
 234 }
 235
 236 const gchar *
 237 our_get_kernel_name() {
 238
 239     if(KERN_NAME)
 240         return KERN_NAME;
 241
 242     return "";
 243 }
 244
 245 const gchar *
 246 our_get_kernel_version() {
 247
 248     if(KERN_VERS)
 249         return KERN_VERS;
 250
 251     return "";
 252 }
 253
 254 const gchar *
 255 our_get_kernel_release() {
 256
 257     if(KERN_RELEASE)
 258         return KERN_RELEASE;
 259
 260     return "";
 261 }
 262
 263 const gchar *
 264 our_get_os_cpename() {
 265
 266     return "ONEDAY";
 267 }
 268
 269 const gchar *
 270 our_get_os_pretty_name() {
 271
 272     return "OpenBSD";
 273 }
 274
 275 /* --- end method/property/dbus signal code, begin bus/name handlers --- */
 276
 277 static void hostnamed_on_bus_acquired(GDBusConnection *conn,
 278                             const gchar *name,
 279                             gpointer user_data) {
 280
 281     g_printf("got bus/name, exporting %s's interface...\n", name);
 282
 283     hostnamed_interf = hostname1_skeleton_new();
 284
 285     /* attach function pointers to generated struct's method handlers */
 286     g_signal_connect(hostnamed_interf, "handle-set-hostname", G_CALLBACK(on_handle_set_hostname), NULL);
 287     g_signal_connect(hostnamed_interf, "handle-set-static-hostname", G_CALLBACK(on_handle_set_static_hostname), NULL);
 288     g_signal_connect(hostnamed_interf, "handle-set-pretty-hostname", G_CALLBACK(on_handle_set_pretty_hostname), NULL);
 289     g_signal_connect(hostnamed_interf, "handle-set-chassis", G_CALLBACK(on_handle_set_chassis), NULL);
 290     g_signal_connect(hostnamed_interf, "handle-set-icon-name", G_CALLBACK(on_handle_set_icon_name), NULL);
 291
 292     /* set our properties before export */
 293     hostname1_set_hostname(hostnamed_interf, our_get_hostname());
 294     hostname1_set_static_hostname(hostnamed_interf, our_get_static_hostname());
 295     hostname1_set_pretty_hostname(hostnamed_interf, our_get_pretty_hostname());
 296     hostname1_set_chassis(hostnamed_interf, our_get_chassis());
 297     hostname1_set_icon_name(hostnamed_interf, our_get_icon_name());
 298     hostname1_set_kernel_name(hostnamed_interf, our_get_kernel_name());
 299     hostname1_set_kernel_version(hostnamed_interf, our_get_kernel_version());
 300     hostname1_set_kernel_release(hostnamed_interf, our_get_kernel_release());
 301     hostname1_set_operating_system_cpename(hostnamed_interf, our_get_os_cpename());
 302     hostname1_set_operating_system_pretty_name(hostnamed_interf, our_get_os_pretty_name());
 303
 304     if(!g_dbus_interface_skeleton_export(G_DBUS_INTERFACE_SKELETON(hostnamed_interf),
 305                                          conn,
 306                                          "/org/freedesktop/hostname1",
 307                                          NULL)) {
 308
 309         g_printf("failed to export %s's interface!\n", name); /* unusual edge case, TODO check errno */
 310         hostnamed_mem_clean();
 311
 312     } else {
 313
 314         dbus_interface_exported = TRUE;
 315         g_printf("exported %s's interface on the system bus...\n", name);
 316     }
 317 }
 318
 319 static void hostnamed_on_name_acquired(GDBusConnection *conn,
 320                                        const gchar *name,
 321                                        gpointer user_data) {
 322
 323     g_printf("success!\n");
 324 }
 325
 326 static void hostnamed_on_name_lost(GDBusConnection *conn,
 327                                    const gchar *name,
 328                                    gpointer user_data) {
 329
 330     if(!conn) {
 331
 332         g_printf("failed to connect to the system bus while trying to acquire name '%s': either dbus-daemon isn't running or we don't have permission to push names and/or their interfaces to it.\n", name);
 333         hostnamed_mem_clean();
 334     }
 335
 336     g_printf("lost name %s, exiting...\n", name);
 337
 338     hostnamed_mem_clean();
 339 }
 340
 341 /* --- end bus/name handlers, begin misc unix functions --- */
 342
 343 /* safe call to clean and then exit
 344  * this stops our GMainLoop safely before letting main() return */
 345 void hostnamed_mem_clean() {
 346
 347     g_printf("exiting...\n");
 348
 349     if(dbus_interface_exported)
 350         g_dbus_interface_skeleton_unexport(G_DBUS_INTERFACE_SKELETON(hostnamed_interf));
 351
 352     if(g_main_loop_is_running(hostnamed_loop))
 353         g_main_loop_quit(hostnamed_loop);
 354
 355 }
 356
 357 /* wrapper for glib's unix signal handling; called only once if terminatating signal is raised against us */
 358 gboolean unix_sig_terminate_handler(gpointer data) {
 359
 360     g_printf("caught SIGINT/HUP/TERM, exiting\n");
 361
 362     hostnamed_mem_clean();
 363     return G_SOURCE_REMOVE;
 364 }
 365
 366 void set_signal_handlers() {
 367
 368     /* we don't care about its descriptor, we never need to unregister these */
 369     g_unix_signal_add(SIGINT,  unix_sig_terminate_handler, NULL);
 370     g_unix_signal_add(SIGHUP,  unix_sig_terminate_handler, NULL);
 371     g_unix_signal_add(SIGTERM, unix_sig_terminate_handler, NULL);
 372
 373     /* TODO: the "only once" guarantee only counts towards specific signals.
 374      *       make sure calling a SIGINT and SIGHUP doesn't cause term_handler()
 375      *       to be called twice */
 376 }
 377
 378 int main() {
 379
 380     hostnamed_freeable = g_ptr_array_new();
 381
 382     /* TODO: check for valid, writable config at init. if no, complain to `make install` */
 383
 384     CHASSIS = ICON = OS_CPENAME = 0;
 385     KERN_NAME = KERN_RELEASE = KERN_VERS = 0;
 386     HOSTNAME = STATIC_HOSTNAME = PRETTY_HOSTNAME = NULL;
 387
 388     set_signal_handlers();
 389
 390     if(!determine_chassis_and_icon() || !set_uname_properties() || !set_names())
 391         return 1;
 392
 393     hostnamed_loop = g_main_loop_new(NULL, TRUE);
 394
 395     bus_descriptor = g_bus_own_name(G_BUS_TYPE_SYSTEM,
 396                                    "org.freedesktop.hostname1",
 397                                    G_BUS_NAME_OWNER_FLAGS_NONE,
 398                                    hostnamed_on_bus_acquired,
 399                                    hostnamed_on_name_acquired,
 400                                    hostnamed_on_name_lost,
 401                                    NULL,
 402                                    NULL);
 403
 404     g_main_loop_run(hostnamed_loop);
 405     /* runs until single g_main_loop_quit() call is raised inside <interface>_mem_clean() */
 406     g_main_loop_unref(hostnamed_loop);
 407
 408     /* guaranteed unownable */
 409     g_bus_unown_name(bus_descriptor);
 410
 411     /* at this point no operations can occur with our data, it is safe to free it + its container */
 412     g_ptr_array_free(hostnamed_freeable, TRUE);
 413
 414     return 0;
 415 }
 416
 417 gboolean set_names() {
 418
 419     /* (1) set up */
 420     gchar *hostname_buf, *static_hostname_buf, *pretty_hostname_buf;
 421     GKeyFile *config;
 422     size_t hostname_divider;
 423
 424     hostname_buf        = (gchar*) g_malloc0(MAXHOSTNAMELEN);
 425     static_hostname_buf = (gchar*) g_malloc0(4096);
 426     pretty_hostname_buf = (gchar*) g_malloc0(4096);
 427
 428     config = g_key_file_new();
 429
 430     g_ptr_array_add(hostnamed_freeable, hostname_buf);
 431     g_ptr_array_add(hostnamed_freeable, static_hostname_buf);
 432     g_ptr_array_add(hostnamed_freeable, pretty_hostname_buf);
 433
 434     /* (2) set HOSTNAME */
 435     if(gethostname(hostname_buf, MAXHOSTNAMELEN) || !g_strcmp0(hostname_buf, ""))
 436         HOSTNAME = "localhost";
 437
 438     HOSTNAME = hostname_buf;
 439
 440     /* this bit gets you the /etc/myname style hostname
 441     hostname_divider = strcspn(hostname_buf, ".");
 442     strncpy(ret, hostname_buf, hostname_divider); */
 443
 444     /* (3) set PRETTY_HOSTNAME */
 445     if(g_key_file_load_from_file(config, "/etc/systemd_compat.conf", G_KEY_FILE_NONE, NULL)
 446         && (pretty_hostname_buf = g_key_file_get_value(config, "hostnamed", "PrettyHostname", NULL)))
 447         PRETTY_HOSTNAME = pretty_hostname_buf;
 448     else
 449         PRETTY_HOSTNAME = "";
 450
 451     if(config)
 452         g_key_file_unref(config);
 453
 454     /* (4) set STATIC_HOSTNAME */
 455     if(!g_strcmp0(PRETTY_HOSTNAME, ""))
 456         STATIC_HOSTNAME = HOSTNAME;
 457
 458     else if((static_hostname_buf = g_hostname_to_ascii(PRETTY_HOSTNAME)))
 459         STATIC_HOSTNAME = static_hostname_buf;
 460
 461     return (HOSTNAME && STATIC_HOSTNAME && PRETTY_HOSTNAME) ? TRUE : FALSE;
 462
 463 }
 464
 465 gboolean set_uname_properties() {
 466
 467     struct utsname un;
 468
 469     if(-1 == uname(&un))
 470         return FALSE;
 471
 472     KERN_NAME = (gchar*)g_malloc0(sizeof(un.sysname));
 473     g_ptr_array_add(hostnamed_freeable, KERN_NAME);
 474     g_strlcpy(KERN_NAME, un.sysname, sizeof(un.sysname));
 475
 476     KERN_RELEASE = (gchar*)g_malloc0(sizeof(un.release));
 477     g_ptr_array_add(hostnamed_freeable, KERN_RELEASE);
 478     g_strlcpy(KERN_RELEASE, un.release, sizeof(un.release));
 479
 480     KERN_VERS = (gchar*)g_malloc0(sizeof(un.version));
 481     g_ptr_array_add(hostnamed_freeable, KERN_VERS);
 482     g_strlcpy(KERN_VERS, un.version, sizeof(un.version));
 483
 484     return TRUE;
 485 }
 486
 487 gboolean determine_chassis_and_icon() {
 488
 489     const size_t bufsize = 4096;
 490
 491     char *hwproduct, *hwmodel, *hwvendor, *hwmachine;
 492     size_t hwproduct_size, hwmodel_size, hwvendor_size, hwmachine_size;
 493     int hwproduct_name[2], hwmodel_name[2], hwvendor_name[2], hwmachine_name[2];
 494     unsigned int i;
 495     gboolean UNSURE_CHASSIS_FLAG, UNSURE_ICON_FLAG;
 496
 497     hwproduct_size = hwmodel_size = hwvendor_size = hwmachine_size = bufsize;
 498     UNSURE_CHASSIS_FLAG = UNSURE_ICON_FLAG = FALSE;
 499     i = 0;
 500
 501     hwproduct = (char*)g_malloc0(4096);
 502     hwmodel   = (char*)g_malloc0(4096);
 503     hwvendor  = (char*)g_malloc0(4096);
 504     hwmachine = (char*)g_malloc0(4096);
 505
 506     g_ptr_array_add(hostnamed_freeable, hwproduct);
 507     g_ptr_array_add(hostnamed_freeable, hwmodel);
 508     g_ptr_array_add(hostnamed_freeable, hwvendor);
 509     g_ptr_array_add(hostnamed_freeable, hwmachine);
 510
 511     hwproduct_name[0] = CTL_HW;
 512     hwproduct_name[1] = HW_PRODUCT;
 513
 514     hwmodel_name[0] = CTL_HW;
 515     hwmodel_name[1] = HW_MODEL;
 516
 517     hwvendor_name[0] = CTL_HW;
 518     hwvendor_name[1] = HW_VENDOR;
 519
 520     hwmachine_name[0] = CTL_HW;
 521     hwmachine_name[1] = HW_MACHINE;
 522
 523     /* pass NULL buffer to check size first, then pass hw to be filled according to freshly-set hw_size */
 524     if(-1 == sysctl(hwproduct_name, 2, NULL, &hwproduct_size, NULL, 0) || -1 == sysctl(hwproduct_name, 2, hwproduct, &hwproduct_size, NULL, 0))
 525         return FALSE;
 526
 527     if(-1 == sysctl(hwmodel_name, 2, NULL, &hwmodel_size, NULL, 0) || -1 == sysctl(hwmodel_name, 2, hwmodel, &hwmodel_size, NULL, 0))
 528         return FALSE;
 529
 530     if(-1 == sysctl(hwvendor_name, 2, NULL, &hwvendor_size, NULL, 0) || -1 == sysctl(hwvendor_name, 2, hwvendor, &hwvendor_size, NULL, 0))
 531         return FALSE;
 532
 533     if(-1 == sysctl(hwmachine_name, 2, NULL, &hwmachine_size, NULL, 0) || -1 == sysctl(hwmachine_name, 2, hwmachine, &hwmachine_size, NULL, 0))
 534         return FALSE;
 535
 536     /* TODO: test for laptop, if not, dmidecode for desktop vs. server
 537      *       probably move this code to vm test func and set a global after running it early, once */
 538
 539     for(; i < G_N_ELEMENTS(chassis_indicator_table); i++) {
 540         if(strcasestr(hwproduct,    chassis_indicator_table[i].match_string)
 541             || strcasestr(hwmodel,  chassis_indicator_table[i].match_string)
 542             || strcasestr(hwvendor, chassis_indicator_table[i].match_string)) {
 543
 544             if(!UNSURE_CHASSIS_FLAG && chassis_indicator_table[i].chassis) {
 545
 546                 UNSURE_CHASSIS_FLAG = chassis_indicator_table[i].chassis_precedence;
 547                 CHASSIS = chassis_indicator_table[i].chassis;
 548             }
 549
 550             if(!UNSURE_ICON_FLAG && chassis_indicator_table[i].icon) {
 551
 552                 UNSURE_ICON_FLAG = chassis_indicator_table[i].icon_precedence;
 553                 ICON = chassis_indicator_table[i].icon;
 554             }
 555         }
 556     }
 557
 558     if(up_native_is_laptop()) {
 559
 560         if(!CHASSIS)
 561             CHASSIS = "laptop";
 562         if(!ICON)
 563             ICON = "input-touchpad"; /* TODO pull an icon package that actually has the icons we're looking for */
 564
 565     } else if(is_server(hwmachine)) {
 566
 567         if(!CHASSIS)
 568             CHASSIS = "server";
 569         if(!ICON)
 570             ICON = "uninterruptible-power-supply";
 571
 572     } else if(!CHASSIS || !ICON) {
 573
 574         if(!CHASSIS)
 575             CHASSIS = "desktop";
 576         if(!ICON)
 577             ICON = "computer";
 578     }
 579
 580     return (CHASSIS && ICON);
 581 }
 582
 583 gboolean is_server(gchar *arch) {
 584
 585     unsigned int i;
 586
 587     for(; i < G_N_ELEMENTS(server_archs); i++)
 588         if(strcasestr(arch, server_archs[i]))
 589             return TRUE;
 590
 591     return FALSE;
 592 }
 593
 594 gboolean up_native_is_laptop() {
 595
 596     struct apm_power_info bstate;
 597     struct sensordev acpiac;
 598
 599     if (up_native_get_sensordev("acpiac0", &acpiac))
 600         return TRUE;
 601
 602     if (-1 == ioctl(up_apm_get_fd(), APM_IOC_GETPOWER, &bstate))
 603         g_error("ioctl on apm fd failed : %s", g_strerror(errno));
 604
 605     return bstate.ac_state != APM_AC_UNKNOWN;
 606 }
 607
 608 int up_apm_get_fd() {
 609
 610     static int apm_fd = 0;
 611
 612     if(apm_fd == 0) {
 613
 614         g_debug("apm_fd is not initialized yet, opening");
 615
 616         /* open /dev/apm */
 617         if((apm_fd = open("/dev/apm", O_RDONLY)) == -1) {
 618             if(errno != ENXIO && errno != ENOENT)
 619                 g_error("cannot open device file");
 620         }
 621     }
 622
 623     return apm_fd;
 624 }
 625
 626 gboolean up_native_get_sensordev(const char * id, struct sensordev * snsrdev) {
 627
 628     int devn;
 629     size_t sdlen = sizeof(struct sensordev);
 630     int mib[] = {CTL_HW, HW_SENSORS, 0, 0 ,0};
 631
 632     for (devn = 0 ; ; devn++) {
 633         mib[2] = devn;
 634         if(sysctl(mib, 3, snsrdev, &sdlen, NULL, 0) == -1) {
 635             if(errno == ENXIO)
 636                 continue;
 637             if(errno == ENOENT)
 638                 break;
 639         }
 640
 641         if (!strcmp(snsrdev->xname, id))
 642             return TRUE;
 643     }
 644
 645     return FALSE;
 646 }