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 #include "../../polkit-auth.h"
  38
  39 /* format: {
  40  *           (1) string to be matched against runtime machine's sysctl output.
  41  *               can be either the exact string or a substring contained
  42  *               within sysctl strings. no "guesses" here, a match should
  43  *               reliably indicate the chassis/icon.
  44  *
  45  *           (2) string describing chassis type divulged by (1).
  46  *               must be one of "desktop", "laptop", "server",
  47  *               "tablet", "handset", "vm", "container" or NULL
  48  *               if only icon string can be ascertained. "vm" refers
  49  *               to operating systems running on baremetal hypervisors
  50  *               (hardware virtualization, like XEN) while "container"
  51  *               refers to OSs running on shared hypervisors like
  52  *               virtualbox or VMware. consider the distinction carefully
  53  *               as common virtualization software like KVM may share
  54  *               characteristics of both "vm" and "container" types.
  55  *
  56  *           (3) string specifying icon to use. follows XDG icon spec.
  57  *               see http://standards.freedesktop.org/icon-naming-spec/icon-naming-spec-latest.html
  58  *               for allowed strings.
  59  *
  60  *           (4) chassis precedence bit. TRUE if (2) is defined and
  61  *               we're certain it is the proper string. FALSE in the
  62  *               circumstance (2) may be the correct string, unless
  63  *               a match with this bit set to TRUE overrides it.
  64  *               if (2) is NULL, this bit is inconsequential.
  65  *
  66  *           (5) icon precedence bit. see previous definition.
  67  *         }                                               */
  68 struct SYSCTL_LOOKUP_TABLE {
  69     gchar    *match_string;
  70     gchar    *chassis;
  71     gchar    *icon;
  72     gboolean chassis_precedence;
  73     gboolean icon_precedence;
  74 };
  75
  76 GPtrArray *hostnamed_freeable;
  77 Hostname1 *hostnamed_interf;
  78
  79 GMainLoop *hostnamed_loop;
  80
  81 guint bus_descriptor;
  82 gboolean dbus_interface_exported; /* reliable because of gdbus operational guarantees */
  83
  84 gchar *HOSTNAME, *STATIC_HOSTNAME, *PRETTY_HOSTNAME;
  85 gchar *CHASSIS, *ICON;
  86 gchar *KERN_NAME, *KERN_RELEASE, *KERN_VERS, *OS_CPENAME;
  87
  88 /* TODO no specific vm or laptop icon in gnome
  89  * NOTE paravirtualization on xen is only available for linuxes right now
  90  * dmesg on linux systems reveals xen and virtualization method (HVM or PVM)
  91  * but we will worry about those later */
  92
  93 /* add any sysctl strings that suggest virtualization here */
  94 const struct SYSCTL_LOOKUP_TABLE chassis_indicator_table[] =
  95 {
  96     { "QEMU Virtual CPU",        "vm",        NULL,              FALSE, FALSE }, /* could be QEMU running in userspace or as part of KVM */
  97     { "KVM",                     "vm",        "drive-multidisk", FALSE, FALSE },
  98     { "SmartDC HVM",             "vm",        "drive-multidisk", TRUE,  TRUE  }, /* illumos-joyent kvm */
  99     { "VirtualBox",              "vm",        "drive-multidisk", TRUE,  TRUE  },
 100     { "VMware, Inc.",            "vm",        "drive-multidisk", TRUE,  TRUE  },
 101     { "VMware Virtual Platform", "vm",        "drive-multidisk", TRUE,  TRUE  },
 102     { "Parallels",               "vm",        "drive-multidisk", TRUE,  TRUE  }, /* need verification */
 103     { "Xen",                     "vm",        "drive-multidisk", FALSE, FALSE }
 104 }; /* TODO: chroots, etc. are the actual "containers", add them */
 105
 106 /* archs to check against when determining if machine is server */
 107 const gchar *server_archs[] = {
 108     "hppa",
 109     "sparc",
 110     "sparc64"
 111 };
 112
 113 static const gchar *DEFAULT_DOMAIN   = ".home.network";
 114 static const gchar *OS_HOSTNAME_PATH = "/etc/myname";
 115
 116 /* --- begin method/property/dbus signal code --- */
 117
 118 /* TODO free some strings here */
 119 static gboolean
 120 on_handle_set_hostname(Hostname1 *hn1_passed_interf,
 121                        GDBusMethodInvocation *invoc,
 122                        const gchar *greet,
 123                        gpointer data) {
 124     GVariant *params;
 125     gchar *proposed_hostname, *valid_hostname_buf;
 126     const gchar *bus_name;
 127     gboolean policykit_auth, ret, try_to_set;
 128     size_t check_length;
 129     check_auth_result is_authed;
 130
 131     proposed_hostname = NULL;
 132     ret = try_to_set = FALSE;
 133
 134     params = g_dbus_method_invocation_get_parameters(invoc);
 135     g_variant_get(params, "(sb)", &proposed_hostname, &policykit_auth);
 136     bus_name = g_dbus_method_invocation_get_sender(invoc);
 137
 138     /* verify caller has correct permissions via polkit */
 139     is_authed = polkit_try_auth(bus_name, "org.freedesktop.hostname1.set-hostname", policykit_auth);
 140
 141     switch(is_authed) {
 142
 143         case AUTHORIZED_NATIVELY:
 144         case AUTHORIZED_BY_PROMPT:
 145             try_to_set = TRUE;
 146             break;
 147
 148         case UNAUTHORIZED_NATIVELY:
 149         case UNAUTHORIZED_FAILED_PROMPT:
 150             g_dbus_method_invocation_return_dbus_error(invoc, "org.freedesktop.hostname1.Error.EACCES", "Insufficient permissions to set hostname.");
 151             break;
 152
 153         case ERROR_BADBUS:
 154             g_dbus_method_invocation_return_dbus_error(invoc, "org.freedesktop.hostname1.Error.EFAULT", "Provided bus name is invalid.");
 155             break;
 156
 157         case ERROR_BADACTION:
 158             g_dbus_method_invocation_return_dbus_error(invoc, "org.freedesktop.hostname1.Error.EFAULT", "Provided action ID is invalid.");
 159             break;
 160
 161         case ERROR_GENERIC:
 162         default:
 163             g_dbus_method_invocation_return_dbus_error(invoc, "org.freedesktop.hostname1.Error.ECANCELED", "Failed to set hostname for unknown reason.");
 164             break;
 165     }
 166
 167     /* verify passed hostname's validity */
 168     if(try_to_set && proposed_hostname && (valid_hostname_buf = g_hostname_to_ascii(proposed_hostname))) {
 169
 170         check_length = strnlen(valid_hostname_buf, MAXHOSTNAMELEN + 1);
 171
 172         if(check_length > MAXHOSTNAMELEN) {
 173
 174             g_dbus_method_invocation_return_dbus_error(invoc, "org.freedesktop.hostname1.Error.ENAMETOOLONG", "Hostname string exceeded maximum length.");
 175             g_free(valid_hostname_buf);
 176
 177         } else if(sethostname(proposed_hostname, check_length)) {
 178
 179             g_dbus_method_invocation_return_dbus_error(invoc, "org.freedesktop.hostname1.Error.ECANCELED", "Failed to set hostname for unknown reason.");
 180             g_free(valid_hostname_buf);
 181
 182         } else {
 183
 184             HOSTNAME = valid_hostname_buf;
 185             hostname1_set_hostname(hn1_passed_interf, HOSTNAME);
 186             g_ptr_array_add(hostnamed_freeable, valid_hostname_buf);
 187             ret = TRUE;
 188             hostname1_complete_set_hostname(hn1_passed_interf, invoc);
 189         }
 190     }
 191
 192     return ret;
 193 }
 194
 195 static gboolean
 196 on_handle_set_static_hostname(Hostname1 *hn1_passed_interf,
 197                               GDBusMethodInvocation *invoc,
 198                               const gchar *greet,
 199                               gpointer data) {
 200
 201     GVariant *params;
 202     gchar *proposed_static_hostname, *valid_static_hostname_buf, *bsd_hostname_try;
 203     const gchar *bus_name;
 204     gboolean policykit_auth, ret, try_to_set;
 205     size_t check_length;
 206     check_auth_result is_authed;
 207
 208
 209     proposed_static_hostname = NULL;
 210     ret = try_to_set = FALSE;
 211
 212     params = g_dbus_method_invocation_get_parameters(invoc);
 213     g_variant_get(params, "(sb)", &proposed_static_hostname, &policykit_auth);
 214     bus_name = g_dbus_method_invocation_get_sender(invoc);
 215
 216     /* verify caller has correct permissions via polkit */
 217     is_authed = polkit_try_auth(bus_name, "org.freedesktop.hostname1.set-static-hostname", policykit_auth);
 218
 219     switch(is_authed) {
 220
 221         case AUTHORIZED_NATIVELY:
 222         case AUTHORIZED_BY_PROMPT:
 223             try_to_set = TRUE;
 224             break;
 225
 226         case UNAUTHORIZED_NATIVELY:
 227         case UNAUTHORIZED_FAILED_PROMPT:
 228             g_dbus_method_invocation_return_dbus_error(invoc, "org.freedesktop.hostname1.Error.EACCES", "Insufficient permissions to set static hostname.");
 229             break;
 230
 231         case ERROR_BADBUS:
 232             g_dbus_method_invocation_return_dbus_error(invoc, "org.freedesktop.hostname1.Error.EFAULT", "Provided bus name is invalid.");
 233             break;
 234
 235         case ERROR_BADACTION:
 236             g_dbus_method_invocation_return_dbus_error(invoc, "org.freedesktop.hostname1.Error.EFAULT", "Provided action ID is invalid.");
 237             break;
 238
 239         case ERROR_GENERIC:
 240         default:
 241             g_dbus_method_invocation_return_dbus_error(invoc, "org.freedesktop.hostname1.Error.ECANCELED", "Failed to set static hostname for unknown reason.");
 242             break;
 243     }
 244
 245     /* verify passed hostname's validity */
 246     if(try_to_set && proposed_static_hostname && (valid_static_hostname_buf = g_hostname_to_ascii(proposed_static_hostname))) {
 247
 248         check_length = strnlen(valid_static_hostname_buf, MAXHOSTNAMELEN + 1);
 249
 250         if(check_length > MAXHOSTNAMELEN) {
 251
 252             g_dbus_method_invocation_return_dbus_error(invoc, "org.freedesktop.hostname1.Error.ENAMETOOLONG", "Static hostname string exceeded maximum length.");
 253             g_free(valid_static_hostname_buf);
 254
 255         } else if(!(STATIC_HOSTNAME = valid_static_hostname_buf)) {
 256
 257             g_dbus_method_invocation_return_dbus_error(invoc, "org.freedesktop.hostname1.Error.ECANCELED", "Failed to set static hostname for unknown reason.");
 258             g_free(valid_static_hostname_buf);
 259
 260         } else {
 261
 262             g_strdelimit(STATIC_HOSTNAME, " ", '-');
 263             hostname1_set_static_hostname(hn1_passed_interf, STATIC_HOSTNAME);
 264             g_ptr_array_add(hostnamed_freeable, valid_static_hostname_buf);
 265
 266             /* set string in OS_HOSTNAME_PATH ("/etc/myname" on bsd) */
 267             bsd_hostname_try = get_bsd_hostname(STATIC_HOSTNAME);
 268             GError *debug_error;
 269             if(!bsd_hostname_try || !g_file_set_contents(OS_HOSTNAME_PATH, bsd_hostname_try, -1, &debug_error))
 270                 g_printf("failed to write to %s! are you root?\n", OS_HOSTNAME_PATH);
 271
 272             if(bsd_hostname_try)
 273                 g_free(bsd_hostname_try);
 274
 275             /* call sethostname(3) too */
 276             ret = (!sethostname(valid_static_hostname_buf, MAXHOSTNAMELEN)) ? TRUE : FALSE; /* TODO set /etc/myname, guarantee domain or substitue .home.network" */
 277             hostname1_complete_set_static_hostname(hn1_passed_interf, invoc);
 278         }
 279     }
 280
 281     return ret;
 282 }
 283
 284 static gboolean
 285 on_handle_set_pretty_hostname(Hostname1 *hn1_passed_interf,
 286                               GDBusMethodInvocation *invoc,
 287                               const gchar *greet,
 288                               gpointer data) {
 289
 290     GVariant *params;
 291     gchar *proposed_pretty_hostname, *valid_pretty_hostname_buf, *computed_static_hostname;
 292     const gchar *bus_name;
 293     gboolean policykit_auth, ret, try_to_set;
 294     size_t check_length;
 295     check_auth_result is_authed;
 296     GKeyFile *config;
 297
 298     config = g_key_file_new();
 299     proposed_pretty_hostname = NULL;
 300     ret = try_to_set = FALSE;
 301
 302     params = g_dbus_method_invocation_get_parameters(invoc);
 303     g_variant_get(params, "(sb)", &proposed_pretty_hostname, &policykit_auth);
 304     bus_name = g_dbus_method_invocation_get_sender(invoc);
 305
 306     /* verify caller has correct permissions via polkit */
 307     is_authed = polkit_try_auth(bus_name, "org.freedesktop.hostname1.set-pretty-hostname", policykit_auth);
 308
 309     switch(is_authed) {
 310
 311         case AUTHORIZED_NATIVELY:
 312         case AUTHORIZED_BY_PROMPT:
 313             try_to_set = TRUE;
 314             break;
 315
 316         case UNAUTHORIZED_NATIVELY:
 317         case UNAUTHORIZED_FAILED_PROMPT:
 318             g_dbus_method_invocation_return_dbus_error(invoc, "org.freedesktop.hostname1.Error.EACCES", "Insufficient permissions to set pretty hostname.");
 319             break;
 320
 321         case ERROR_BADBUS:
 322             g_dbus_method_invocation_return_dbus_error(invoc, "org.freedesktop.hostname1.Error.EFAULT", "Provided bus name is invalid.");
 323             break;
 324
 325         case ERROR_BADACTION:
 326             g_dbus_method_invocation_return_dbus_error(invoc, "org.freedesktop.hostname1.Error.EFAULT", "Provided action ID is invalid.");
 327             break;
 328
 329         case ERROR_GENERIC:
 330         default:
 331             g_dbus_method_invocation_return_dbus_error(invoc, "org.freedesktop.hostname1.Error.ECANCELED", "Failed to set pretty hostname for unknown reason.");
 332             break;
 333     }
 334
 335     /* verify passed hostname's validity */
 336     if(try_to_set && proposed_pretty_hostname && (valid_pretty_hostname_buf = g_locale_to_utf8(proposed_pretty_hostname, -1, 0, 0, NULL))) {
 337
 338         check_length = strnlen(valid_pretty_hostname_buf, MAXHOSTNAMELEN + 1);
 339
 340         if(check_length > MAXHOSTNAMELEN) {
 341
 342             g_dbus_method_invocation_return_dbus_error(invoc, "org.freedesktop.hostname1.Error.ENAMETOOLONG", "Static hostname string exceeded maximum length.");
 343             g_free(valid_pretty_hostname_buf);
 344
 345         } else if(!(PRETTY_HOSTNAME = valid_pretty_hostname_buf)) {
 346
 347             g_dbus_method_invocation_return_dbus_error(invoc, "org.freedesktop.hostname1.Error.ECANCELED", "Failed to set pretty hostname for unknown reason.");
 348             g_free(valid_pretty_hostname_buf);
 349
 350         } else {
 351
 352             hostname1_set_pretty_hostname(hn1_passed_interf, PRETTY_HOSTNAME);
 353             g_ptr_array_add(hostnamed_freeable, valid_pretty_hostname_buf);
 354             hostname1_complete_set_pretty_hostname(hn1_passed_interf, invoc);
 355             ret = TRUE;
 356
 357             if(g_key_file_load_from_file(config, "/etc/machine-info", G_KEY_FILE_NONE, NULL)) {
 358
 359                 g_key_file_set_string(config, "hostnamed", "PRETTY_HOSTNAME", valid_pretty_hostname_buf);
 360
 361                 /* if((computed_static_hostname = g_hostname_to_ascii(PRETTY_HOSTNAME))) {
 362
 363                     g_strdelimit(computed_static_hostname, " ", '-');
 364                     hostname1_set_static_hostname(hn1_passed_interf, computed_static_hostname);
 365                     STATIC_HOSTNAME = computed_static_hostname;
 366                     g_ptr_array_add(hostnamed_freeable, computed_static_hostname);
 367                     g_key_file_set_string(config, "hostnamed", "StaticHostname", computed_static_hostname);
 368
 369                 } */
 370             }
 371         }
 372     }
 373
 374     g_key_file_save_to_file(config, "/etc/machine-info", NULL);
 375     g_key_file_unref(config);
 376
 377     return ret;
 378 }
 379
 380 static gboolean
 381 on_handle_set_chassis(Hostname1 *hn1_passed_interf,
 382                       GDBusMethodInvocation *invoc,
 383                       const gchar *greet,
 384                       gpointer data) {
 385
 386     GVariant *params;
 387     gchar *proposed_chassis_name, *valid_chassis_name_buf;
 388     const gchar *bus_name;
 389     gboolean policykit_auth, ret, try_to_set;
 390     check_auth_result is_authed;
 391     GKeyFile *config;
 392
 393     config = g_key_file_new();
 394     proposed_chassis_name = NULL;
 395     ret = try_to_set = FALSE;
 396     valid_chassis_name_buf = (gchar *)g_malloc0(8192);
 397
 398     params = g_dbus_method_invocation_get_parameters(invoc);
 399     g_variant_get(params, "(sb)", &proposed_chassis_name, &policykit_auth);
 400     bus_name = g_dbus_method_invocation_get_sender(invoc);
 401
 402     g_strlcpy(valid_chassis_name_buf, proposed_chassis_name, (gsize)64);
 403
 404     /* verify caller has correct permissions via polkit */
 405     is_authed = polkit_try_auth(bus_name, "org.freedesktop.hostname1.set-chassis", policykit_auth);
 406
 407     switch(is_authed) {
 408
 409         case AUTHORIZED_NATIVELY:
 410         case AUTHORIZED_BY_PROMPT:
 411             try_to_set = TRUE;
 412             break;
 413
 414         case UNAUTHORIZED_NATIVELY:
 415         case UNAUTHORIZED_FAILED_PROMPT:
 416             g_dbus_method_invocation_return_dbus_error(invoc, "org.freedesktop.hostname1.Error.EACCES", "Insufficient permissions to set chassis type.");
 417             break;
 418
 419         case ERROR_BADBUS:
 420             g_dbus_method_invocation_return_dbus_error(invoc, "org.freedesktop.hostname1.Error.EFAULT", "Provided bus name is invalid.");
 421             break;
 422
 423         case ERROR_BADACTION:
 424             g_dbus_method_invocation_return_dbus_error(invoc, "org.freedesktop.hostname1.Error.EFAULT", "Provided action ID is invalid.");
 425             break;
 426
 427         case ERROR_GENERIC:
 428         default:
 429             g_dbus_method_invocation_return_dbus_error(invoc, "org.freedesktop.hostname1.Error.ECANCELED", "Failed to set chassis type for unknown reason.");
 430             break;
 431     }
 432
 433     /* verify passed chassis type's validity */
 434     if(try_to_set && proposed_chassis_name) {
 435
 436         if(!is_valid_chassis_type(proposed_chassis_name)) {
 437
 438             g_dbus_method_invocation_return_dbus_error(invoc, "org.freedesktop.hostname1.Error.ECANCELED", "Chassis type must be 'desktop', 'laptop', 'server', 'tablet', 'handset', 'vm', or 'container'.");
 439             g_free(valid_chassis_name_buf);
 440
 441         } else if(!(CHASSIS = valid_chassis_name_buf)) {
 442
 443             g_dbus_method_invocation_return_dbus_error(invoc, "org.freedesktop.hostname1.Error.ECANCELED", "Failed to set chassis type for unknown reason.");
 444             g_free(valid_chassis_name_buf);
 445
 446         } else {
 447
 448             hostname1_set_chassis(hn1_passed_interf, CHASSIS);
 449             g_ptr_array_add(hostnamed_freeable, valid_chassis_name_buf);
 450             hostname1_complete_set_chassis(hn1_passed_interf, invoc);
 451
 452             if(g_key_file_load_from_file(config, "/etc/machine-info", G_KEY_FILE_NONE, NULL)) {
 453
 454                 ret = TRUE;
 455                 g_key_file_set_string(config, "hostnamed", "ChassisType", valid_chassis_name_buf);
 456
 457             }
 458         }
 459     }
 460
 461     g_key_file_save_to_file(config, "/etc/machine-info", NULL);
 462     g_key_file_unref(config);
 463
 464     return ret;
 465 }
 466
 467 static gboolean
 468 on_handle_set_icon_name(Hostname1 *hn1_passed_interf,
 469                         GDBusMethodInvocation *invoc,
 470                         const gchar *greet,
 471                         gpointer data) {
 472
 473     GVariant *params;
 474     gchar *proposed_icon_name, *valid_icon_name_buf;
 475     const gchar *bus_name;
 476     gboolean policykit_auth, ret, try_to_set;
 477     check_auth_result is_authed;
 478     GKeyFile *config;
 479
 480     config = g_key_file_new();
 481     proposed_icon_name = NULL;
 482     ret = try_to_set = FALSE;
 483
 484     params = g_dbus_method_invocation_get_parameters(invoc);
 485     g_variant_get(params, "(sb)", &proposed_icon_name, &policykit_auth);
 486     bus_name = g_dbus_method_invocation_get_sender(invoc);
 487
 488     /* verify caller has correct permissions via polkit */
 489     is_authed = polkit_try_auth(bus_name, "org.freedesktop.hostname1.set-icon-name", policykit_auth);
 490
 491     switch(is_authed) {
 492
 493         case AUTHORIZED_NATIVELY:
 494         case AUTHORIZED_BY_PROMPT:
 495             try_to_set = TRUE;
 496             break;
 497
 498         case UNAUTHORIZED_NATIVELY:
 499         case UNAUTHORIZED_FAILED_PROMPT:
 500             g_dbus_method_invocation_return_dbus_error(invoc, "org.freedesktop.hostname1.Error.EACCES", "Insufficient permissions to set icon name.");
 501             break;
 502
 503         case ERROR_BADBUS:
 504             g_dbus_method_invocation_return_dbus_error(invoc, "org.freedesktop.hostname1.Error.EFAULT", "Provided bus name is invalid.");
 505             break;
 506
 507         case ERROR_BADACTION:
 508             g_dbus_method_invocation_return_dbus_error(invoc, "org.freedesktop.hostname1.Error.EFAULT", "Provided action ID is invalid.");
 509             break;
 510
 511         case ERROR_GENERIC:
 512         default:
 513             g_dbus_method_invocation_return_dbus_error(invoc, "org.freedesktop.hostname1.Error.ECANCELED", "Failed to set icon name for unknown reason.");
 514             break;
 515     }
 516
 517     /* verify passed chassis type's validity */
 518     if(try_to_set && proposed_icon_name) {
 519
 520         g_strlcpy(valid_icon_name_buf, proposed_icon_name, (gsize)64);
 521
 522         if(!(ICON = valid_icon_name_buf)) {
 523
 524             g_dbus_method_invocation_return_dbus_error(invoc, "org.freedesktop.hostname1.Error.ECANCELED", "Failed to set icon name for unknown reason.");
 525             g_free(valid_icon_name_buf);
 526
 527         } else {
 528
 529             hostname1_set_icon_name(hn1_passed_interf, ICON);
 530             g_ptr_array_add(hostnamed_freeable, valid_icon_name_buf);
 531             hostname1_complete_set_icon_name(hn1_passed_interf, invoc);
 532
 533             if(g_key_file_load_from_file(config, "/etc/machine-info", G_KEY_FILE_NONE, NULL)) {
 534
 535                 ret = TRUE;
 536                 g_key_file_set_string(config, "hostnamed", "IconName", valid_icon_name_buf);
 537
 538             }
 539         }
 540     }
 541
 542     g_key_file_save_to_file(config, "/etc/machine-info", NULL);
 543     g_key_file_unref(config);
 544
 545     return ret;
 546 }
 547
 548 /* note: all hostnamed/hostname1's properties are read-only,
 549  * and do not need set_ functions, gdbus-codegen realized
 550  * this from the XML and handled the to-be error of trying
 551  * to set a read-only property's value
 552  */
 553
 554 const gchar *
 555 our_get_hostname() {
 556
 557     gchar *hostname_buf;
 558     hostname_buf = (gchar *)g_malloc0(MAXHOSTNAMELEN);
 559
 560     if(gethostname(hostname_buf, MAXHOSTNAMELEN))
 561         return "localhost.home.network"; /* TODO bomb out here probably */
 562
 563     else if(!g_strcmp0(HOSTNAME, hostname_buf)) {
 564
 565         g_free(hostname_buf);
 566         return HOSTNAME;
 567     }
 568
 569     g_ptr_array_add(hostnamed_freeable, hostname_buf);
 570     HOSTNAME = hostname_buf;
 571     hostname1_set_hostname(hostnamed_interf, HOSTNAME);
 572
 573     return HOSTNAME;
 574 }
 575
 576 const gchar *
 577 our_get_static_hostname() {
 578
 579     if(STATIC_HOSTNAME && g_strcmp0(STATIC_HOSTNAME, ""))
 580         return STATIC_HOSTNAME;
 581     else if(HOSTNAME)
 582         return HOSTNAME;
 583
 584     return "localhost.home.network";
 585 }
 586
 587 const gchar *
 588 our_get_pretty_hostname() {
 589
 590     if(PRETTY_HOSTNAME)
 591         return PRETTY_HOSTNAME;
 592
 593     return "";
 594 }
 595
 596 const gchar *
 597 our_get_chassis() {
 598
 599    if(CHASSIS)
 600         return CHASSIS;
 601
 602     return "desktop"; /* this leads to the most generic beheivor in the unlikely case its returned */
 603 }
 604
 605 const gchar *
 606 our_get_icon_name() {
 607
 608     if(ICON)
 609         return ICON;
 610
 611     return "";
 612 }
 613
 614 const gchar *
 615 our_get_kernel_name() {
 616
 617     if(KERN_NAME)
 618         return KERN_NAME;
 619
 620     return "";
 621 }
 622
 623 const gchar *
 624 our_get_kernel_version() {
 625
 626     if(KERN_VERS)
 627         return KERN_VERS;
 628
 629     return "";
 630 }
 631
 632 const gchar *
 633 our_get_kernel_release() {
 634
 635     if(KERN_RELEASE)
 636         return KERN_RELEASE;
 637
 638     return "";
 639 }
 640
 641 const gchar *
 642 our_get_os_cpename() {
 643
 644     /* XXX needs to parse /etc/os-release (fallback to /usr/local/lib/os-release) */
 645     return "";
 646 }
 647
 648 const gchar *
 649 our_get_os_pretty_name() {
 650
 651     return "OpenBSD";
 652 }
 653
 654 /* --- end method/property/dbus signal code, begin bus/name handlers --- */
 655
 656 static void hostnamed_on_bus_acquired(GDBusConnection *conn,
 657                                       const gchar *name,
 658                                       gpointer user_data) {
 659
 660     g_printf("got bus/name, exporting %s's interface...\n", name);
 661
 662     hostnamed_interf = hostname1_skeleton_new();
 663
 664     /* attach function pointers to generated struct's method handlers */
 665     g_signal_connect(hostnamed_interf, "handle-set-hostname", G_CALLBACK(on_handle_set_hostname), NULL);
 666     g_signal_connect(hostnamed_interf, "handle-set-static-hostname", G_CALLBACK(on_handle_set_static_hostname), NULL);
 667     g_signal_connect(hostnamed_interf, "handle-set-pretty-hostname", G_CALLBACK(on_handle_set_pretty_hostname), NULL);
 668     g_signal_connect(hostnamed_interf, "handle-set-chassis", G_CALLBACK(on_handle_set_chassis), NULL);
 669     g_signal_connect(hostnamed_interf, "handle-set-icon-name", G_CALLBACK(on_handle_set_icon_name), NULL);
 670
 671     /* set our properties before export */
 672     hostname1_set_hostname(hostnamed_interf, our_get_hostname());
 673     hostname1_set_static_hostname(hostnamed_interf, our_get_static_hostname());
 674     hostname1_set_pretty_hostname(hostnamed_interf, our_get_pretty_hostname());
 675     hostname1_set_chassis(hostnamed_interf, our_get_chassis());
 676     hostname1_set_icon_name(hostnamed_interf, our_get_icon_name());
 677     hostname1_set_kernel_name(hostnamed_interf, our_get_kernel_name());
 678     hostname1_set_kernel_version(hostnamed_interf, our_get_kernel_version());
 679     hostname1_set_kernel_release(hostnamed_interf, our_get_kernel_release());
 680     hostname1_set_operating_system_cpename(hostnamed_interf, our_get_os_cpename());
 681     hostname1_set_operating_system_pretty_name(hostnamed_interf, our_get_os_pretty_name());
 682
 683     if(!g_dbus_interface_skeleton_export(G_DBUS_INTERFACE_SKELETON(hostnamed_interf),
 684                                          conn,
 685                                          "/org/freedesktop/hostname1",
 686                                          NULL)) {
 687
 688         g_printf("failed to export %s's interface!\n", name); /* unusual edge case, TODO check errno */
 689         hostnamed_mem_clean();
 690
 691     } else {
 692
 693         dbus_interface_exported = TRUE;
 694         g_printf("exported %s's interface on the system bus...\n", name);
 695     }
 696 }
 697
 698 static void hostnamed_on_name_acquired(GDBusConnection *conn,
 699                                        const gchar *name,
 700                                        gpointer user_data) {
 701
 702     g_printf("success!\n");
 703 }
 704
 705 static void hostnamed_on_name_lost(GDBusConnection *conn,
 706                                    const gchar *name,
 707                                    gpointer user_data) {
 708
 709     if(!conn) {
 710
 711         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);
 712         hostnamed_mem_clean();
 713     }
 714
 715     g_printf("lost name %s, exiting...\n", name);
 716
 717     hostnamed_mem_clean();
 718 }
 719
 720 /* --- end bus/name handlers, begin misc unix functions --- */
 721
 722 /* safe call to clean and then exit
 723  * this stops our GMainLoop safely before letting main() return */
 724 void hostnamed_mem_clean() {
 725
 726     g_printf("exiting...\n");
 727
 728     if(dbus_interface_exported)
 729         g_dbus_interface_skeleton_unexport(G_DBUS_INTERFACE_SKELETON(hostnamed_interf));
 730
 731     if(g_main_loop_is_running(hostnamed_loop))
 732         g_main_loop_quit(hostnamed_loop);
 733
 734 }
 735
 736 /* wrapper for glib's unix signal handling; called only once if terminatating signal is raised against us */
 737 gboolean unix_sig_terminate_handler(gpointer data) {
 738
 739     g_printf("caught SIGINT/HUP/TERM, exiting\n");
 740
 741     hostnamed_mem_clean();
 742     return G_SOURCE_REMOVE;
 743 }
 744
 745 void set_signal_handlers() {
 746
 747     /* we don't care about its descriptor, we never need to unregister these */
 748     g_unix_signal_add(SIGINT,  unix_sig_terminate_handler, NULL);
 749     g_unix_signal_add(SIGHUP,  unix_sig_terminate_handler, NULL);
 750     g_unix_signal_add(SIGTERM, unix_sig_terminate_handler, NULL);
 751
 752     /* TODO: the "only once" guarantee only counts towards specific signals.
 753      *       make sure calling a SIGINT and SIGHUP doesn't cause term_handler()
 754      *       to be called twice */
 755 }
 756
 757 int main() {
 758
 759     hostnamed_freeable = g_ptr_array_new();
 760
 761     /* TODO: check for valid, writable config at init. if no, complain to `make install` */
 762
 763     get_bsd_hostname("adsf"); /* TODO KILL ME */
 764
 765     CHASSIS = ICON = OS_CPENAME = 0;
 766     KERN_NAME = KERN_RELEASE = KERN_VERS = 0;
 767     HOSTNAME = STATIC_HOSTNAME = PRETTY_HOSTNAME = NULL;
 768
 769     set_signal_handlers();
 770
 771     if(!determine_chassis_and_icon() || !set_uname_properties() || !set_names())
 772         return 1;
 773
 774     hostnamed_loop = g_main_loop_new(NULL, TRUE);
 775
 776     bus_descriptor = g_bus_own_name(G_BUS_TYPE_SYSTEM,
 777                                    "org.freedesktop.hostname1",
 778                                    G_BUS_NAME_OWNER_FLAGS_NONE,
 779                                    hostnamed_on_bus_acquired,
 780                                    hostnamed_on_name_acquired,
 781                                    hostnamed_on_name_lost,
 782                                    NULL,
 783                                    NULL);
 784
 785     g_main_loop_run(hostnamed_loop);
 786     /* runs until single g_main_loop_quit() call is raised inside <interface>_mem_clean() */
 787     g_main_loop_unref(hostnamed_loop);
 788
 789     /* guaranteed unownable */
 790     g_bus_unown_name(bus_descriptor);
 791
 792     /* at this point no operations can occur with our data, it is safe to free it + its container */
 793     g_ptr_array_free(hostnamed_freeable, TRUE);
 794
 795     return 0;
 796 }
 797
 798 gboolean set_names() {
 799
 800     /* (1) set up */
 801     gchar *hostname_buf, *static_hostname_buf, *pretty_hostname_buf;
 802     GKeyFile *config;
 803     size_t hostname_divider;
 804
 805     hostname_buf        = (gchar*) g_malloc0(MAXHOSTNAMELEN);
 806     static_hostname_buf = (gchar*) g_malloc0(4096);
 807     pretty_hostname_buf = (gchar*) g_malloc0(4096);
 808
 809     config = g_key_file_new();
 810
 811     g_ptr_array_add(hostnamed_freeable, hostname_buf);
 812     g_ptr_array_add(hostnamed_freeable, static_hostname_buf);
 813     g_ptr_array_add(hostnamed_freeable, pretty_hostname_buf);
 814
 815     /* (2) set HOSTNAME */
 816     if(gethostname(hostname_buf, MAXHOSTNAMELEN) || !g_strcmp0(hostname_buf, ""))
 817         HOSTNAME = "localhost";
 818
 819     HOSTNAME = hostname_buf;
 820
 821     /* this bit gets you the /etc/myname style hostname
 822     hostname_divider = strcspn(hostname_buf, ".");
 823     strncpy(ret, hostname_buf, hostname_divider); */
 824
 825     /* (3) set PRETTY_HOSTNAME */
 826     if(g_key_file_load_from_file(config, "/etc/machine-info", G_KEY_FILE_NONE, NULL)
 827         && (pretty_hostname_buf = g_key_file_get_value(config, "hostnamed", "PRETTY_HOSTNAME", NULL)))
 828         PRETTY_HOSTNAME = pretty_hostname_buf;
 829     else
 830         PRETTY_HOSTNAME = "";
 831
 832
 833     /* (4) set STATIC_HOSTNAME */
 834     if((static_hostname_buf = g_key_file_get_value(config, "hostnamed", "STATIC_HOSTNAME", NULL)))
 835         STATIC_HOSTNAME = static_hostname_buf;
 836
 837     else
 838         STATIC_HOSTNAME = "";
 839
 840     if(config)
 841         g_key_file_unref(config);
 842
 843     return (HOSTNAME && STATIC_HOSTNAME && PRETTY_HOSTNAME) ? TRUE : FALSE;
 844 }
 845
 846 gboolean set_uname_properties() {
 847
 848     struct utsname un;
 849
 850     if(-1 == uname(&un))
 851         return FALSE;
 852
 853     KERN_NAME = (gchar*)g_malloc0(sizeof(un.sysname));
 854     g_ptr_array_add(hostnamed_freeable, KERN_NAME);
 855     g_strlcpy(KERN_NAME, un.sysname, sizeof(un.sysname));
 856
 857     KERN_RELEASE = (gchar*)g_malloc0(sizeof(un.release));
 858     g_ptr_array_add(hostnamed_freeable, KERN_RELEASE);
 859     g_strlcpy(KERN_RELEASE, un.release, sizeof(un.release));
 860
 861     KERN_VERS = (gchar*)g_malloc0(sizeof(un.version));
 862     g_ptr_array_add(hostnamed_freeable, KERN_VERS);
 863     g_strlcpy(KERN_VERS, un.version, sizeof(un.version));
 864
 865     return TRUE;
 866 }
 867
 868 gboolean determine_chassis_and_icon() {
 869
 870     const size_t bufsize = 4096;
 871
 872     char *hwproduct, *hwmodel, *hwvendor, *hwmachine;
 873     size_t hwproduct_size, hwmodel_size, hwvendor_size, hwmachine_size;
 874     int hwproduct_name[2], hwmodel_name[2], hwvendor_name[2], hwmachine_name[2];
 875     unsigned int i;
 876     gboolean UNSURE_CHASSIS_FLAG, UNSURE_ICON_FLAG;
 877
 878     hwproduct_size = hwmodel_size = hwvendor_size = hwmachine_size = bufsize;
 879     UNSURE_CHASSIS_FLAG = UNSURE_ICON_FLAG = FALSE;
 880     i = 0;
 881
 882     hwproduct = (char*)g_malloc0(4096);
 883     hwmodel   = (char*)g_malloc0(4096);
 884     hwvendor  = (char*)g_malloc0(4096);
 885     hwmachine = (char*)g_malloc0(4096);
 886
 887     g_ptr_array_add(hostnamed_freeable, hwproduct);
 888     g_ptr_array_add(hostnamed_freeable, hwmodel);
 889     g_ptr_array_add(hostnamed_freeable, hwvendor);
 890     g_ptr_array_add(hostnamed_freeable, hwmachine);
 891
 892     hwproduct_name[0] = CTL_HW;
 893     hwproduct_name[1] = HW_PRODUCT;
 894
 895     hwmodel_name[0] = CTL_HW;
 896     hwmodel_name[1] = HW_MODEL;
 897
 898     hwvendor_name[0] = CTL_HW;
 899     hwvendor_name[1] = HW_VENDOR;
 900
 901     hwmachine_name[0] = CTL_HW;
 902     hwmachine_name[1] = HW_MACHINE;
 903
 904     /* pass NULL buffer to check size first, then pass hw to be filled according to freshly-set hw_size */
 905     if(-1 == sysctl(hwproduct_name, 2, NULL, &hwproduct_size, NULL, 0) || -1 == sysctl(hwproduct_name, 2, hwproduct, &hwproduct_size, NULL, 0))
 906         return FALSE;
 907
 908     if(-1 == sysctl(hwmodel_name, 2, NULL, &hwmodel_size, NULL, 0) || -1 == sysctl(hwmodel_name, 2, hwmodel, &hwmodel_size, NULL, 0))
 909         return FALSE;
 910
 911     if(-1 == sysctl(hwvendor_name, 2, NULL, &hwvendor_size, NULL, 0) || -1 == sysctl(hwvendor_name, 2, hwvendor, &hwvendor_size, NULL, 0))
 912         return FALSE;
 913
 914     if(-1 == sysctl(hwmachine_name, 2, NULL, &hwmachine_size, NULL, 0) || -1 == sysctl(hwmachine_name, 2, hwmachine, &hwmachine_size, NULL, 0))
 915         return FALSE;
 916
 917     /* TODO: test for laptop, if not, dmidecode for desktop vs. server
 918      *       probably move this code to vm test func and set a global after running it early, once */
 919
 920     for(; i < G_N_ELEMENTS(chassis_indicator_table); i++) {
 921         if(strcasestr(hwproduct,    chassis_indicator_table[i].match_string)
 922             || strcasestr(hwmodel,  chassis_indicator_table[i].match_string)
 923             || strcasestr(hwvendor, chassis_indicator_table[i].match_string)) {
 924
 925             if(!UNSURE_CHASSIS_FLAG && chassis_indicator_table[i].chassis) {
 926
 927                 UNSURE_CHASSIS_FLAG = chassis_indicator_table[i].chassis_precedence;
 928                 CHASSIS = chassis_indicator_table[i].chassis;
 929             }
 930
 931             if(!UNSURE_ICON_FLAG && chassis_indicator_table[i].icon) {
 932
 933                 UNSURE_ICON_FLAG = chassis_indicator_table[i].icon_precedence;
 934                 ICON = chassis_indicator_table[i].icon;
 935             }
 936         }
 937     }
 938
 939     if(up_native_is_laptop()) {
 940
 941         if(!CHASSIS)
 942             CHASSIS = "laptop";
 943         if(!ICON)
 944             ICON = "input-touchpad"; /* TODO pull an icon package that actually has the icons we're looking for */
 945
 946     } else if(is_server(hwmachine)) {
 947
 948         if(!CHASSIS)
 949             CHASSIS = "server";
 950         if(!ICON)
 951             ICON = "uninterruptible-power-supply";
 952
 953     } else if(!CHASSIS || !ICON) {
 954
 955         if(!CHASSIS)
 956             CHASSIS = "desktop";
 957         if(!ICON)
 958             ICON = "computer";
 959     }
 960
 961     return (CHASSIS && ICON);
 962 }
 963
 964 gboolean is_server(gchar *arch) {
 965
 966     unsigned int i;
 967
 968     for(; i < G_N_ELEMENTS(server_archs); i++)
 969         if(strcasestr(arch, server_archs[i]))
 970             return TRUE;
 971
 972     return FALSE;
 973 }
 974
 975 gboolean up_native_is_laptop() {
 976
 977     struct apm_power_info bstate;
 978     struct sensordev acpiac;
 979
 980     if (up_native_get_sensordev("acpiac0", &acpiac))
 981         return TRUE;
 982
 983     if (-1 == ioctl(up_apm_get_fd(), APM_IOC_GETPOWER, &bstate))
 984         g_error("ioctl on apm fd failed : %s", g_strerror(errno));
 985
 986     return bstate.ac_state != APM_AC_UNKNOWN;
 987 }
 988
 989 int up_apm_get_fd() {
 990
 991     static int apm_fd = 0;
 992
 993     if(apm_fd == 0) {
 994
 995         g_debug("apm_fd is not initialized yet, opening");
 996
 997         /* open /dev/apm */
 998         if((apm_fd = open("/dev/apm", O_RDONLY)) == -1) {
 999             if(errno != ENXIO && errno != ENOENT)
1000                 g_error("cannot open device file");
1001         }
1002     }
1003
1004     return apm_fd;
1005 }
1006
1007 gboolean up_native_get_sensordev(const char * id, struct sensordev * snsrdev) {
1008
1009     int devn;
1010     size_t sdlen = sizeof(struct sensordev);
1011     int mib[] = {CTL_HW, HW_SENSORS, 0, 0 ,0};
1012
1013     for (devn = 0 ; ; devn++) {
1014         mib[2] = devn;
1015         if(sysctl(mib, 3, snsrdev, &sdlen, NULL, 0) == -1) {
1016             if(errno == ENXIO)
1017                 continue;
1018             if(errno == ENOENT)
1019                 break;
1020         }
1021
1022         if (!strcmp(snsrdev->xname, id))
1023             return TRUE;
1024     }
1025
1026     return FALSE;
1027 }
1028
1029 static gboolean is_valid_chassis_type(gchar *test) {
1030
1031     if(!g_strcmp0(test, "desktop") ||
1032        !g_strcmp0(test, "laptop") ||
1033        !g_strcmp0(test, "server") ||
1034        !g_strcmp0(test, "tablet") ||
1035        !g_strcmp0(test, "handset") ||
1036        !g_strcmp0(test, "vm") ||
1037        !g_strcmp0(test, "container") ||
1038        !g_strcmp0(test, ""))
1039         return TRUE;
1040
1041     return FALSE;
1042 }
1043
1044 /* returns a proper, bsd-style FQDN hostname safe to write to /etc/myname
1045  * if proposed_hostname does not contain an appended domain, the one in /etc/myname is substituted.
1046  * failing that, DEFAULT_DOMAIN is used. NULL if proposed_hostname is invalid
1047  * returns string that should be g_free()'d, or NULL if passed an invalid hostname */
1048 static gchar *get_bsd_hostname(gchar *proposed_hostname) {
1049
1050     gchar *bsd_hostname, *ascii_translated_hostname, **myname_contents, *passed_domain, *temp_buf;
1051     size_t domain_len, check_len;
1052     gboolean read_result;
1053
1054     g_strdelimit(proposed_hostname, "`~!@#$%^&*()_=+[{]}|:;'\"\\", '-');
1055
1056     ascii_translated_hostname = g_hostname_to_ascii(proposed_hostname);
1057     check_len = strnlen(ascii_translated_hostname, MAXHOSTNAMELEN);
1058
1059     if(!ascii_translated_hostname || !check_len || check_len > MAXHOSTNAMELEN || !g_strcmp0("", ascii_translated_hostname) || !g_strcmp0(".", ascii_translated_hostname)) {
1060
1061         bsd_hostname = NULL;
1062         passed_domain = NULL;
1063         myname_contents = NULL;
1064
1065     } else if((passed_domain = has_domain(ascii_translated_hostname))) {
1066
1067         bsd_hostname    = (gchar *) g_malloc0(MAXHOSTNAMELEN);
1068         g_strlcpy(bsd_hostname, ascii_translated_hostname, MAXHOSTNAMELEN);
1069
1070         passed_domain = NULL;
1071         myname_contents = NULL;
1072
1073     } else {
1074
1075         myname_contents = (gchar **) g_malloc0(MAXHOSTNAMELEN * 2);
1076         read_result = g_file_get_contents(OS_HOSTNAME_PATH, myname_contents, NULL, NULL);
1077
1078         if(read_result && (passed_domain = has_domain(myname_contents[0]))) {
1079
1080             domain_len = strnlen(passed_domain, MAXHOSTNAMELEN);
1081
1082             if((domain_len + check_len) > MAXHOSTNAMELEN)
1083                 bsd_hostname = NULL;
1084             else
1085                 bsd_hostname = g_strconcat(ascii_translated_hostname, passed_domain, NULL);
1086
1087         } else if(myname_contents[0]) {
1088
1089             g_printf("%s does not contain a proper FQDN! this is a significant error on BSD machines, otherwise OK.\nfalling back to default domain, '%s'\n", OS_HOSTNAME_PATH, DEFAULT_DOMAIN);
1090
1091             domain_len = strnlen(DEFAULT_DOMAIN, MAXHOSTNAMELEN);
1092
1093             if((domain_len + check_len) > MAXHOSTNAMELEN)
1094                 bsd_hostname = NULL;
1095             else
1096                 bsd_hostname = g_strconcat(ascii_translated_hostname, DEFAULT_DOMAIN, NULL);
1097
1098         } else {
1099
1100             g_printf("could not read hostname at %s, this is a major error\n", OS_HOSTNAME_PATH);
1101             bsd_hostname = NULL;
1102             passed_domain = (gchar *) g_malloc0(MAXHOSTNAMELEN);
1103         }
1104     }
1105
1106     if(passed_domain)
1107         g_free(passed_domain);
1108     if(myname_contents)
1109         g_free(myname_contents);
1110
1111     if(bsd_hostname && !strchr(bsd_hostname, '\n')) {
1112
1113         temp_buf = bsd_hostname;
1114         bsd_hostname = g_strconcat(bsd_hostname, "\n", NULL);
1115         g_free(temp_buf);
1116     }
1117
1118     return bsd_hostname;
1119 }
1120
1121 /* returns NULL if no domain, otherwise append-appropriate domain string you must g_free()
1122  * i.e. has_domain("foo.bar.com") returns ".bar.com"
1123  * only pass g_hostname_to_ascii'd strings */
1124 static gchar *has_domain(const gchar *test) {
1125
1126     size_t hostname_len, full_len;
1127     gchar *ret;
1128
1129     hostname_len = strcspn(test, ".");
1130     full_len     = strnlen(test, MAXHOSTNAMELEN);
1131
1132     if(full_len == hostname_len)
1133         return NULL;
1134
1135     ret = (gchar *) g_malloc0(MAXHOSTNAMELEN);
1136     g_strlcpy(ret, &test[hostname_len], MAXHOSTNAMELEN);
1137
1138     return ret;
1139 }