src/libcaptive/sandbox/split.c

   1 /* $Id$
   2  * Connection of captive-vfs interface through CORBA/ORBit
   3  * Copyright (C) 2002-2005 Jan Kratochvil <project-captive@jankratochvil.net>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; exactly version 2 of June 1991 is required
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  17  */
  18
  19
  20 #include "config.h"
  21
  22 #include "split.h"      /* self */
  23 #include "sandbox.h"
  24 #include "server-GLogFunc.h"
  25 #include "captive/macros.h"
  26 #include <glib/gmacros.h>
  27 #include <stdlib.h>
  28 #include "captive/rtl-file.h"
  29 #include <unistd.h>
  30 #include <fcntl.h>
  31 #include "server-Directory.h"
  32 #include "server-Vfs.h"
  33 #include "../client/vfs.h"
  34 #include "parent-Vfs.h"
  35 #include <dirent.h>
  36 #include "server-CaptiveIOChannel.h"
  37 #include <errno.h>
  38 #include "../client/giochannel-blind.h" /* for captive_giochannel_blind_new() */
  39 #include <signal.h>
  40 #include "../storage/relastblock.h"     /* for captive_storage_relastblock() */
  41 #include <sys/file.h>   /* flock() */
  42
  43 #ifdef HAVE_ORBIT_LINK
  44 void link_set_tmpdir(const char *dir);
  45 #else
  46 #include <linc/linc.h>  /* for linc_main_get_loop() */
  47 #endif
  48
  49
  50 /* CONFIG: */
  51
  52 #define HEARTBEAT_SOURCE_CHECK_EVENTS (G_IO_IN|G_IO_PRI)
  53 #define HEARTBEAT_SOURCE_CHECK_REVENTS (HEARTBEAT_SOURCE_CHECK_EVENTS|G_IO_ERR|G_IO_HUP|G_IO_NVAL)
  54
  55
  56 gboolean validate_CORBA_Environment(CORBA_Environment *evp)
  57 {
  58         if (evp->_major==CORBA_NO_EXCEPTION)
  59                 return TRUE;
  60
  61         g_error(_("CORBA Exception occured: id=\"%s\", value=%p"),
  62                         CORBA_exception_id(evp),CORBA_exception_value(evp));
  63         CORBA_exception_free(evp);
  64         return FALSE;
  65 }
  66
  67 CORBA_Environment captive_corba_ev;
  68 CORBA_ORB captive_corba_orb;
  69 PortableServer_POA captive_corba_poa;
  70
  71 static void corba_shutdown_atexit(void);
  72
  73 static gboolean corba_init(const char *pname,CORBA_Environment *evp,CORBA_ORB *orbp,PortableServer_POA *poap)
  74 {
  75 static gboolean done=FALSE;
  76 int orb_argc=1;
  77 gchar *orb_argv[]={
  78                 (gchar *)captive_strdup_alloca(pname),
  79                 NULL};
  80
  81         g_return_val_if_fail(evp!=NULL,FALSE);
  82         g_return_val_if_fail(orbp!=NULL,FALSE);
  83         g_return_val_if_fail(poap!=NULL,FALSE);
  84
  85         if (done)
  86                 return TRUE;    /* FIXME: '*poap' is left invalid! */
  87
  88         /* Init 'ev' */
  89         CORBA_exception_init(evp);
  90
  91         /* Init 'orb' */
  92         /* libcaptive is single-threaded only, caller must lock it.
  93          * If thread A spawned the sandbox while currently doing its own work
  94          * and thread B calls the sandbox thread B waits on ORB_run()
  95          * while the sandbox waits for the response of thread A ORB. Deadlock.
  96          * "orbit-local-non-threaded-orb" requests thread unaware ORB.
  97          */
  98         *orbp=CORBA_ORB_init(&orb_argc,orb_argv,"orbit-local-non-threaded-orb",evp);
  99         g_return_val_if_fail(*orbp!=CORBA_OBJECT_NIL,FALSE);
 100         g_return_val_if_fail(validate_CORBA_Environment(evp),FALSE);
 101
 102         /* Init 'poa' */
 103         *poap=(PortableServer_POA)CORBA_ORB_resolve_initial_references(*orbp,"RootPOA",evp);
 104         g_return_val_if_fail(validate_CORBA_Environment(evp),FALSE);
 105         {
 106 PortableServer_POAManager poa_mgr;
 107                 poa_mgr=PortableServer_POA__get_the_POAManager(*poap,evp);
 108                 g_return_val_if_fail(validate_CORBA_Environment(evp),FALSE);
 109                 PortableServer_POAManager_activate(poa_mgr,evp);
 110                 g_return_val_if_fail(validate_CORBA_Environment(evp),FALSE);
 111                 CORBA_Object_release((CORBA_Object)poa_mgr,evp);
 112                 g_return_val_if_fail(validate_CORBA_Environment(evp),FALSE);
 113                 }
 114
 115         g_atexit(corba_shutdown_atexit);
 116
 117         done=TRUE;
 118         return TRUE;
 119 }
 120
 121
 122 static CORBA_ORB heartbeat_source_callback_orb=CORBA_OBJECT_NIL;
 123
 124 gboolean corba_shutdown(CORBA_Environment *evp,CORBA_ORB *orbp,PortableServer_POA *poap)
 125 {
 126 PortableServer_POA poa;
 127 CORBA_ORB orb;
 128
 129         g_return_val_if_fail(evp!=NULL,FALSE);
 130         g_return_val_if_fail(orbp!=NULL,FALSE);
 131         g_return_val_if_fail(poap!=NULL,FALSE);
 132
 133         /* Shutdown 'poa' */
 134         poa=*poap;
 135         *poap=CORBA_OBJECT_NIL;
 136         CORBA_Object_release((CORBA_Object)poa,evp);
 137         g_return_val_if_fail(validate_CORBA_Environment(evp),FALSE);
 138
 139         /* Shutdown 'orb' */
 140         orb=*orbp;
 141         *orbp=CORBA_OBJECT_NIL;
 142         heartbeat_source_callback_orb=CORBA_OBJECT_NIL;
 143         CORBA_ORB_destroy(orb,evp);
 144         /* Do not: g_return_val_if_fail(validate_CORBA_Environment(evp),FALSE);
 145          * here as CORBA_ORB_destroy() sometimes reports:
 146          *      WARNING **: ORB: a total of X refs to X ORB objects were leaked
 147          */
 148         CORBA_exception_free(evp);
 149
 150         /* Shutdown 'ev' */
 151         CORBA_exception_free(evp);
 152
 153         return TRUE;
 154 }
 155
 156 static void sandbox_parent_own_orbit_dir_cleanup_atexit(void);
 157
 158 static void corba_shutdown_atexit(void)
 159 {
 160 gboolean errbool;
 161
 162         errbool=corba_shutdown(&captive_corba_ev,&captive_corba_orb,&captive_corba_poa);
 163         g_assert(errbool==TRUE);
 164
 165         /* Delete the CORBA ORB socket directory only after full CORBA ORB shutdown. */
 166         sandbox_parent_own_orbit_dir_cleanup_atexit();
 167 }
 168
 169
 170 static GSource *captive_corba_sandbox_child_heartbeat_gsource;
 171
 172 #if 0   /* Currently unused - see server-Vfs.c:impl_Captive_Vfs_shutdown() */
 173 void sandbox_child_prepare_shutdown(void)
 174 {
 175         /* Prevent during shutdown: Captive-WARNING **: CORBA Exception occured: id="IDL:omg.org/CORBA/COMM_FAILURE:1.0" */
 176         if (captive_corba_sandbox_child_heartbeat_gsource) {
 177                 g_source_destroy(captive_corba_sandbox_child_heartbeat_gsource);
 178                 g_source_unref(captive_corba_sandbox_child_heartbeat_gsource);
 179                 captive_corba_sandbox_child_heartbeat_gsource=NULL;
 180                 }
 181 }
 182 #endif
 183
 184 GMainLoop *captive_corba_get_loop(void)
 185 {
 186 #ifdef HAVE_ORBIT_LINK
 187 static GMainLoop *link_loop;
 188
 189         if (!link_loop)
 190                 link_loop=g_main_loop_new(g_main_context_default(),TRUE);
 191         return link_loop;
 192 #else
 193         return linc_main_get_loop();
 194 #endif
 195 }
 196
 197 GMainContext *captive_corba_get_context(void)
 198 {
 199         return g_main_loop_get_context(captive_corba_get_loop());
 200 }
 201
 202 void sandbox_child_shutdown(void)
 203 {
 204         /* Do not fail by passing logging messages to the master. */
 205         impl_Captive_Vfs_init_g_log_func_disable();
 206
 207         g_main_loop_quit(captive_corba_get_loop());
 208 }
 209
 210
 211 static gboolean heartbeat_source_callback(gpointer data /* unused */)
 212 {
 213         g_return_val_if_fail(heartbeat_source_callback_orb!=CORBA_OBJECT_NIL,FALSE);    /* the source should be removed */
 214
 215         sandbox_child_shutdown();
 216
 217         return FALSE;   /* the source should be removed */
 218 }
 219
 220
 221 static gboolean heartbeat_source_prepare(GSource *source,gint *timeout)
 222 {
 223         *timeout=-1;
 224
 225         return FALSE;
 226 }
 227
 228 static GPollFD heartbeat_source_check_gpollfd;
 229
 230 static gboolean heartbeat_source_check(GSource *source)
 231 {
 232         return !!(heartbeat_source_check_gpollfd.revents & HEARTBEAT_SOURCE_CHECK_REVENTS);
 233 }
 234
 235 static gboolean heartbeat_source_dispatch(GSource *source,GSourceFunc callback,gpointer user_data)
 236 {
 237         g_assert(callback!=NULL);
 238         return (*callback)(user_data);
 239 }
 240
 241 static GSourceFuncs heartbeat_source_watch_funcs={
 242                 heartbeat_source_prepare,
 243                 heartbeat_source_check,
 244                 heartbeat_source_dispatch,
 245                 NULL,   /* finalize */
 246                 };
 247
 248 void captive_corba_sandbox_child(const gchar *chrooted_orbit_dir)
 249 {
 250 Captive_Vfs Vfs_object;
 251 impl_POA_Captive_Vfs *Vfs_servant;
 252 gboolean errbool;
 253 guint errguint;
 254 int errint;
 255
 256         /* attach heartbeat_source_callback() to watch for any abnormalities
 257          * on our open pipe 'parentheart_fds' and terminate the child if parent dies.
 258          */
 259         captive_corba_sandbox_child_heartbeat_gsource=g_source_new(&heartbeat_source_watch_funcs,sizeof(GSource));
 260         g_return_if_fail(captive_corba_sandbox_child_heartbeat_gsource!=NULL);
 261         g_source_set_callback(
 262                         captive_corba_sandbox_child_heartbeat_gsource,  /* source */
 263                         heartbeat_source_callback,      /* func */
 264                         NULL,   /* data */
 265                         NULL);  /* notify */
 266         heartbeat_source_check_gpollfd.fd=0 /* STDIN */;        /* parentheart_fd_read */
 267         heartbeat_source_check_gpollfd.events=HEARTBEAT_SOURCE_CHECK_EVENTS;
 268         heartbeat_source_check_gpollfd.revents=0;
 269         g_source_add_poll(captive_corba_sandbox_child_heartbeat_gsource,&heartbeat_source_check_gpollfd);
 270
 271         errbool=corba_init("captive-sandbox-child",&captive_corba_ev,&captive_corba_orb,&captive_corba_poa);
 272         g_return_if_fail(errbool==TRUE);
 273
 274         heartbeat_source_callback_orb=captive_corba_orb;
 275
 276         /* captive_corba_get_context() makes sense only after corba_init() -> CORBA_ORB_init() */
 277         errguint=g_source_attach(
 278                         captive_corba_sandbox_child_heartbeat_gsource,  /* source */
 279                         captive_corba_get_context());   /* context; NULL means 'default context' */
 280         g_assert(errguint!=0);
 281
 282         /* Init 'Vfs_object' */
 283         Vfs_object=impl_Captive_Vfs__create(captive_corba_poa,&captive_corba_ev);
 284         g_assert(validate_CORBA_Environment(&captive_corba_ev));
 285
 286         /* Pass IOR to our parent.
 287          * It will also create the socket needed for 'chrooted_orbit_dir' below
 288          * by CORBA_ORB_object_to_string()->ORBit_marshal_object()->IOP_generate_profiles()->ORBit_ORB_start_servers...
 289          */
 290         {
 291 char *Vfs_IOR;
 292                 Vfs_IOR=CORBA_ORB_object_to_string(captive_corba_orb,Vfs_object,&captive_corba_ev);
 293                 g_assert(validate_CORBA_Environment(&captive_corba_ev));
 294                 g_assert(Vfs_IOR!=NULL);
 295                 errint=printf("ior=%s\n",Vfs_IOR);
 296                 g_assert(errint>=0);
 297                 CORBA_free(Vfs_IOR);
 298                 }
 299
 300         /* Default mode is 0700, permit parent non-"captive" users to access our IOR socket. */
 301         if (chrooted_orbit_dir) {
 302 DIR *dir;
 303 struct dirent *dirent;
 304 const gchar *socketname=NULL,*socketpathname;
 305
 306                 errint=chmod(chrooted_orbit_dir,0755);
 307                 g_assert(errint==0);
 308
 309                 dir=opendir(chrooted_orbit_dir);
 310                 g_assert(dir!=NULL);
 311                 while (errno=0,(dirent=readdir(dir))) {
 312                         if (!strcmp(dirent->d_name,".") || !strcmp(dirent->d_name,".."))
 313                                 continue;
 314                         g_assert(socketname==NULL);
 315                         socketname=captive_strdup_alloca(dirent->d_name);
 316                         }
 317                 g_assert(errno==0);
 318                 errint=closedir(dir);
 319                 g_assert(errint==0);
 320                 g_assert(socketname!=NULL);
 321
 322                 socketpathname=captive_printf_alloca("%s/%s",chrooted_orbit_dir,socketname);
 323                 errint=chmod(socketpathname,0666);
 324                 g_assert(errint==0);
 325
 326                 printf("socketname=%s\n",socketname);
 327                 }
 328
 329         /* Close the output to flush it to our spawning parent. */
 330         errint=fflush(stdout);
 331         g_assert(errint==0);
 332         errint=fclose(stdout);
 333         g_assert(errint==0);
 334
 335         /* CORBA_ORB_run() -> linc_main_loop_run() -> g_main_loop_run()
 336          * and therefore we should be safe with glib events handling.
 337          */
 338 #ifdef HAVE_ORBIT_LINK
 339         g_main_loop_run(captive_corba_get_loop());
 340 #else
 341         CORBA_ORB_run(captive_corba_orb,&captive_corba_ev);
 342         g_assert(validate_CORBA_Environment(&captive_corba_ev));
 343 #endif
 344
 345         /* Shutdown 'Vfs' servant */
 346         Vfs_servant=PortableServer_POA_reference_to_servant(captive_corba_poa,Vfs_object,&captive_corba_ev);
 347         g_assert(validate_CORBA_Environment(&captive_corba_ev));
 348         CORBA_Object_release(Vfs_object,&captive_corba_ev);
 349         g_assert(validate_CORBA_Environment(&captive_corba_ev));
 350         impl_Captive_Vfs__destroy(Vfs_servant,&captive_corba_ev);
 351         g_assert(validate_CORBA_Environment(&captive_corba_ev));
 352
 353         errbool=corba_shutdown(&captive_corba_ev,&captive_corba_orb,&captive_corba_poa);
 354         g_assert(errbool==TRUE);
 355
 356         _exit(EXIT_SUCCESS);
 357 }
 358
 359
 360 static void options_module_captive_to_options_module_corba
 361                 (Captive_CaptiveOptionsModule *dest_options_module_corba,const struct captive_options_module *src_options_module_captive)
 362 {
 363         g_return_if_fail(dest_options_module_corba!=NULL);
 364         g_return_if_fail(src_options_module_captive!=NULL);
 365
 366         g_return_if_fail(src_options_module_captive->type==CAPTIVE_OPTIONS_MODULE_TYPE_PE32);
 367
 368         dest_options_module_corba->pathname_utf8=CORBA_string_dup(src_options_module_captive->pathname_utf8);
 369         dest_options_module_corba->data._maximum=src_options_module_captive->u.pe32.length;
 370         dest_options_module_corba->data._length =src_options_module_captive->u.pe32.length;
 371         dest_options_module_corba->data._buffer=Captive_Bytes_allocbuf(dest_options_module_corba->data._maximum);
 372         memcpy(dest_options_module_corba->data._buffer,src_options_module_captive->u.pe32.base,
 373                         src_options_module_captive->u.pe32.length);
 374         dest_options_module_corba->data._release=TRUE;
 375 }
 376
 377 static void unlink_nonrecursive(const gchar *dirname)
 378 {
 379 DIR *dir;
 380 struct dirent *dirent;
 381 int errint;
 382
 383         dir=opendir(dirname);
 384         if (!dir)
 385                 g_error(_("Failed to check for non-recursive removal directory \"%s\": %m"),dirname);
 386
 387         while (errno=0,(dirent=readdir(dir))) {
 388 gchar *pathname;
 389
 390                 if (!strcmp(dirent->d_name,".") || !strcmp(dirent->d_name,".."))
 391                         continue;
 392                 pathname=g_strdup_printf("%s/%s",dirname,dirent->d_name);
 393                 errint=unlink(pathname);
 394                 g_assert(errint==0);
 395                 g_free(pathname);
 396                 }
 397         g_assert(errno==0);
 398         errint=closedir(dir);
 399         g_assert(errint==0);
 400         errint=rmdir(dirname);
 401         if (errint)
 402                 g_error(_("Failed to remove (non-recursive removal) directory \"%s\": %m"),dirname);
 403 }
 404
 405 static const gchar *sandbox_parent_own_orbit_dir;
 406 static const gchar *sandbox_parent_own_orbit_socket;
 407
 408 static void sandbox_parent_own_orbit_dir_cleanup_atexit(void)
 409 {
 410 static gboolean done=FALSE;
 411
 412         g_log(G_LOG_DOMAIN,G_LOG_LEVEL_DEBUG,"%s; done=%d",G_STRLOC,(int)done);
 413
 414         if (done)
 415                 return;
 416         done=TRUE;
 417
 418         if (sandbox_parent_own_orbit_dir)
 419                 unlink_nonrecursive(sandbox_parent_own_orbit_dir);
 420 }
 421
 422 static struct sandbox_parent_own_orbit_dir_cleanup_signal {
 423         int signum;
 424         /* FIXME: Why we cannot use 'sighandler_t'? */ void (*sighandler_orig)(int signum);
 425         } sandbox_parent_own_orbit_dir_cleanup_signals[]={
 426                 { SIGINT  },
 427                 { SIGQUIT },
 428                 { SIGTERM },
 429                 { SIGHUP  },
 430                 { SIGABRT },
 431                 { SIGFPE  },
 432                 };
 433
 434 static void sandbox_parent_own_orbit_dir_cleanup_sighandler(int signum)
 435 {
 436 struct sandbox_parent_own_orbit_dir_cleanup_signal *sigstructp;
 437
 438         for (
 439                         sigstructp=sandbox_parent_own_orbit_dir_cleanup_signals;
 440                         sigstructp<sandbox_parent_own_orbit_dir_cleanup_signals+G_N_ELEMENTS(sandbox_parent_own_orbit_dir_cleanup_signals);
 441                         sigstructp++) {
 442                 if (sigstructp->signum==signum)
 443                         break;
 444                 }
 445         g_assert(sigstructp<sandbox_parent_own_orbit_dir_cleanup_signals+G_N_ELEMENTS(sandbox_parent_own_orbit_dir_cleanup_signals));
 446         signal(signum,sigstructp->sighandler_orig);
 447
 448         /* Prevent recursive fatal logging before signal restore: */
 449         /* Do not: g_log(G_LOG_DOMAIN,G_LOG_LEVEL_DEBUG,"%s: signum=%d,sighandler_orig=%p",G_STRLOC,signum,sigstructp->sighandler_orig);
 450          * as it is dangerous to g_log() from sighandler.
 451          */
 452
 453         sandbox_parent_own_orbit_dir_cleanup_atexit();
 454
 455         /* Do not: g_log(G_LOG_DOMAIN,G_LOG_LEVEL_DEBUG,"%s: re-raising...",G_STRLOC);
 456          * as it is dangerous to g_log() from sighandler.
 457          */
 458         raise(signum);
 459 }
 460
 461 static void sandbox_parent_own_orbit_dir_cleanup_init(void)
 462 {
 463 struct sandbox_parent_own_orbit_dir_cleanup_signal *sigstructp;
 464
 465         for (
 466                         sigstructp=sandbox_parent_own_orbit_dir_cleanup_signals;
 467                         sigstructp<sandbox_parent_own_orbit_dir_cleanup_signals+G_N_ELEMENTS(sandbox_parent_own_orbit_dir_cleanup_signals);
 468                         sigstructp++) {
 469                 sigstructp->sighandler_orig=signal(sigstructp->signum,sandbox_parent_own_orbit_dir_cleanup_sighandler);
 470                 if (sigstructp->sighandler_orig==SIG_IGN)
 471                         sigstructp->sighandler_orig=SIG_DFL;
 472                 }
 473 }
 474
 475 static void createlockdir(const gchar *dir)
 476 {
 477 gint retries;
 478
 479         for (retries=0;retries<10;retries++) {
 480 struct stat statbuf;
 481 int dirfd;
 482
 483                 if (mkdir(dir,0700)) {
 484                         if (errno!=EEXIST)
 485                                 g_error(_("Failed to create chroot directory \"%s\": %m"),dir);
 486                         unlink_nonrecursive(dir);
 487                         if (mkdir(dir,0700))
 488                                 g_error(_("Failed to create chroot directory \"%s\" after attempted unlink: %m"),dir);
 489                         }
 490                 dirfd=open(dir,O_RDONLY);
 491                 if (dirfd==-1) {
 492                         if (errno!=ENOENT)
 493                                 g_error(_("Failed to open created chroot directory \"%s\" to lock it: %m"),dir);
 494                         continue;
 495                         }
 496                 /* Do not use 'LOCK_NB' here as the garbage collector should release it soon. */
 497                 if (flock(dirfd,LOCK_EX))
 498                         g_error(_("Failed to lock created chroot directory \"%s\": %m"),dir);
 499                 if (lstat(dir,&statbuf)) {
 500                         if (errno!=ENOENT)
 501                                 g_error(_("Failed to lstat(2) created chroot directory \"%s\": %m"),dir);
 502                         if (close(dirfd))
 503                                 g_error(_("Failed to close created and locked chroot directory \"%s\": %m"),dir);
 504                         continue;
 505                         }
 506                 /* Leave 'dirfd' open to leave it LOCK_EX-ed. */
 507                 break;
 508                 }
 509 }
 510
 511 static gchar *sandbox_parent_read_ior
 512                 (int Vfs_IOR_fd_read,gchar **child_chroot_pid_hashkey_dirp,CaptiveVfsParentObject *captive_vfs_parent_object)
 513 {
 514 gchar *data;
 515 gsize data_size;
 516 GHashTable *hash;
 517 gchar *ior,*child_chroot_pid_hashkey_dir;
 518 int errint;
 519 gchar *s,*sd,*se;
 520 gboolean errbool;
 521 const gchar *ior_read_error;
 522
 523         /* Initialize /tmp/orbit-$username directory for linking IOR socket. */
 524         errbool=corba_init("captive-sandbox-parent",&captive_corba_ev,&captive_corba_orb,&captive_corba_poa);
 525         g_assert(errbool==TRUE);
 526
 527         /* FIXME: Security: Duplicate giop_tmpdir_init() here. */
 528         if (!sandbox_parent_own_orbit_dir) {
 529                 /* FIXME: Make 'CAPTIVE_SANDBOX_CHROOT' configurable. */
 530                 /* Use also geteuid() marker here as could not remove the directory
 531                  * of some other user otherwise.
 532                  */
 533                 sandbox_parent_own_orbit_dir=g_strdup_printf("%s/tmp/captive-orbit-%d-%d",CAPTIVE_SANDBOX_CHROOT,getpid(),geteuid());
 534                 sandbox_parent_own_orbit_dir_cleanup_init();
 535                 createlockdir(sandbox_parent_own_orbit_dir);
 536 #ifdef HAVE_ORBIT_LINK
 537                 link_set_tmpdir(sandbox_parent_own_orbit_dir);
 538 #else
 539                 linc_set_tmpdir(sandbox_parent_own_orbit_dir);
 540 #endif
 541                 }
 542
 543         data=captive_rtl_file_read(Vfs_IOR_fd_read,&data_size); /* data_fd_read */
 544         errint=close(Vfs_IOR_fd_read);
 545         ior_read_error=NULL;
 546 #define IOR_READ_ERROR(cond) G_STMT_START { \
 547                 if (!ior_read_error && !(cond)) \
 548                         ior_read_error=G_STRINGIFY(cond); \
 549                 } G_STMT_END
 550         IOR_READ_ERROR(errint==0);
 551         IOR_READ_ERROR(data!=NULL);
 552         IOR_READ_ERROR(data_size>=1);
 553         IOR_READ_ERROR(data[data_size-1]=='\n');
 554         if (ior_read_error)
 555                 g_error(_("Error connecting to the sandbox server (failed \"%s\"). Try running by hand: %s"),
 556                                 ior_read_error,CAPTIVE_VFS_OBJECT(captive_vfs_parent_object)->options.sandbox_server_argv[0]);
 557 #undef IOR_READ_ERROR
 558
 559         hash=g_hash_table_new(g_str_hash,g_str_equal);
 560
 561         for (s=data;s<data+data_size;s=se+1) {
 562                 se=strchr(s,'\n');
 563                 g_assert(se!=NULL);
 564                 *se=0;
 565                 sd=strchr(s,'=');
 566                 g_assert(sd!=NULL);
 567                 *sd=0;
 568                 g_hash_table_insert(hash,s,sd+1);
 569                 }
 570         g_assert(s==data+data_size);
 571
 572         if ((child_chroot_pid_hashkey_dir=g_hash_table_lookup(hash,"chroot_pid_hashkey_dir"))) {
 573 const gchar *socketname,*socketpathname_src,*socketpathname_dest;
 574 const gchar *chrooted_orbit_dir;
 575
 576                 /* IOR contains the full pathname with the setuid username encoded. */
 577                 chrooted_orbit_dir=g_hash_table_lookup(hash,"chrooted_orbit_dir");
 578                 g_assert(chrooted_orbit_dir!=NULL);
 579                 captive_vfs_parent_object->corba_chrooted_orbit_dir=g_strdup(chrooted_orbit_dir);
 580                 /* 0700 as this directory will not be reused
 581                  * to commuicate with any other sandbox child.
 582                  */
 583                 if (mkdir(chrooted_orbit_dir,0700)) {
 584                         g_assert(errno==EEXIST);
 585                         }
 586
 587                 socketname=g_hash_table_lookup(hash,"socketname");
 588                 g_assert(socketname!=NULL);
 589                 captive_vfs_parent_object->corba_socketname=g_strdup(socketname);
 590
 591                 socketpathname_src=captive_printf_alloca("%s/%s/%s",child_chroot_pid_hashkey_dir,chrooted_orbit_dir,socketname);
 592                 socketpathname_dest=g_strdup_printf("%s/%s",chrooted_orbit_dir,socketname);
 593                 errint=link(socketpathname_src,socketpathname_dest);
 594                 if (errint)
 595                         g_error("link(\"%s\",\"%s\")=%d:%m",socketpathname_src,socketpathname_dest,errint);
 596                 }
 597         if (child_chroot_pid_hashkey_dirp)
 598                 *child_chroot_pid_hashkey_dirp=g_strdup(child_chroot_pid_hashkey_dir);
 599
 600         ior=g_hash_table_lookup(hash,"ior");
 601         g_assert(ior!=NULL);
 602         ior=g_strdup(ior);
 603         g_free(data);
 604
 605         g_hash_table_destroy(hash);
 606
 607         return ior;
 608 }
 609
 610
 611 static xmlNode *options_module_captive_to_xml
 612                 (xmlNode *dest_xml_parent,const struct captive_options_module *src_options_module_captive)
 613 {
 614         g_return_val_if_fail(dest_xml_parent!=NULL,NULL);
 615         g_return_val_if_fail(src_options_module_captive!=NULL,NULL);
 616
 617         { xmlNode *module=xmlNewTextChild(dest_xml_parent,NULL,"module",NULL);
 618         const gchar *type_string="???"; /* Prevent: ... might be used uninitialized in this function */
 619         const gchar *basename,*cgs;
 620
 621                 basename=src_options_module_captive->pathname_utf8;
 622                 if ((cgs=strrchr(basename,'/')))
 623                         basename=cgs+1;
 624                 xmlNewProp(module,"basename",basename);
 625                 switch (src_options_module_captive->type) {
 626                         case CAPTIVE_OPTIONS_MODULE_TYPE_PE32:
 627                                 type_string="PE32";
 628                                 xmlNewProp(module,"length",captive_printf_alloca("%lu",(unsigned long)src_options_module_captive->u.pe32.length));
 629                                 xmlNewProp(module,"md5"   ,src_options_module_captive->u.pe32.md5);
 630                                 break;
 631                         case CAPTIVE_OPTIONS_MODULE_TYPE_GMODULE:
 632                                 type_string="gmodule";
 633                                 break;
 634                         default: g_assert_not_reached();
 635                         }
 636                 xmlNewProp(module,"type",type_string);  /* AFTER the 'switch' to set 'type_string'! */
 637                 return module;
 638                 }
 639 }
 640
 641
 642 static void sandbox_parent_bug_doc_make(CaptiveVfsParentObject *captive_vfs_parent_object)
 643 {
 644         { xmlDoc *doc=xmlNewDoc("1.0");
 645                 captive_vfs_parent_object->corba_bug_doc=doc;
 646                 { xmlNode *bug=xmlNewDocNode(captive_vfs_parent_object->corba_bug_doc,NULL,"bug",NULL);
 647                         xmlDocSetRootElement(captive_vfs_parent_object->corba_bug_doc,bug);
 648                         captive_vfs_parent_object->corba_bug=bug;
 649                         { xmlNode *bug_captive=xmlNewTextChild(bug,NULL,"captive",NULL);
 650                                 xmlNewProp(bug_captive,"version",VERSION);
 651                                 }
 652                         { xmlNode *bug_filesystem=xmlNewTextChild(bug,NULL,"filesystem",NULL);
 653                                 options_module_captive_to_xml(bug_filesystem,&CAPTIVE_VFS_OBJECT(captive_vfs_parent_object)->options.filesystem);
 654                                 }
 655                         { xmlNode *bug_load_module=xmlNewTextChild(bug,NULL,"load_module",NULL);
 656                         guint load_moduleui;
 657                         struct captive_options_module *options_module;
 658                         GList *load_module_node;
 659
 660                                 for (load_moduleui=0,load_module_node=CAPTIVE_VFS_OBJECT(captive_vfs_parent_object)->options.load_module;
 661                                                 load_module_node;
 662                                                 load_moduleui++,load_module_node=load_module_node->next) {
 663                                         options_module=load_module_node->data;
 664                                         options_module_captive_to_xml(bug_load_module,options_module);
 665                                         }
 666                                 }
 667                         { xmlNode *bug_action=xmlNewTextChild(bug,NULL,"action",NULL);
 668                                 captive_vfs_parent_object->corba_bug_action=bug_action;
 669                                 }
 670                         { xmlNode *bug_log=xmlNewTextChild(bug,NULL,"log",NULL);
 671                                 captive_vfs_parent_object->corba_bug_log=bug_log;
 672                                 }
 673                         }
 674                 }
 675 }
 676
 677
 678 static void sandbox_parent(const gchar *Vfs_IOR,const gchar *child_chroot_pid_hashkey_dir,CaptiveVfsParentObject *captive_vfs_parent_object)
 679 {
 680 Captive_Vfs Vfs_object;
 681 Captive_GLogFunc GLogFunc_object;
 682 Captive_CaptiveIOChannel CaptiveIOChannel_object;
 683 Captive_CaptiveOptions options_corba;
 684 guint load_module_length,load_moduleui;
 685 struct captive_options_module *options_module;
 686 GList *load_module_node;
 687 const gchar *child_chroot_parent_own_orbit_socket,*child_chroot_parent_own_orbit_dir;
 688 int errint;
 689
 690         g_return_if_fail(Vfs_IOR!=NULL);
 691         /* 'child_chroot_pid_hashkey_dir' may be NULL */
 692         g_return_if_fail(CAPTIVE_VFS_PARENT_IS_OBJECT(captive_vfs_parent_object));
 693
 694         Vfs_object=CORBA_ORB_string_to_object(captive_corba_orb,Vfs_IOR,&captive_corba_ev);
 695         g_assert(validate_CORBA_Environment(&captive_corba_ev));
 696
 697         /* Init 'GLogFunc_object' */
 698         GLogFunc_object=impl_Captive_GLogFunc__create(captive_corba_poa,captive_vfs_parent_object,&captive_corba_ev);
 699         g_assert(validate_CORBA_Environment(&captive_corba_ev));
 700
 701         /* Init 'CaptiveIOChannel_object' */
 702         if (!captive_vfs_parent_object->corba_parent_giochanel_blind_source) {
 703 GIOChannel *giochannel;
 704
 705                 giochannel=CAPTIVE_VFS_OBJECT(captive_vfs_parent_object)->options.image_iochannel;
 706                 g_io_channel_ref(giochannel);
 707
 708                 giochannel=captive_storage_relastblock(giochannel);
 709
 710                 switch (CAPTIVE_VFS_OBJECT(captive_vfs_parent_object)->options.rwmode) {
 711                         case CAPTIVE_OPTION_RWMODE_RO:
 712                         case CAPTIVE_OPTION_RWMODE_RW:
 713                                 break;
 714                         case CAPTIVE_OPTION_RWMODE_BLIND: {
 715 GIOChannel *giochannel_orig;
 716
 717                                 giochannel_orig=giochannel;
 718                                 giochannel=(GIOChannel *)captive_giochannel_blind_new(
 719                                                 giochannel,     /* giochannel_orig */
 720                                                 TRUE); /* writeable */
 721                                 g_io_channel_unref(giochannel_orig);    /* reffed by captive_giochannel_blind_new() */
 722                                 } break;
 723                         default: g_assert_not_reached();
 724                         }
 725                 captive_vfs_parent_object->corba_parent_giochanel_blind_source=giochannel;
 726                 }
 727
 728         if (!captive_vfs_parent_object->corba_parent_giochanel_blind)
 729                 captive_vfs_parent_object->corba_parent_giochanel_blind=(GIOChannel *)captive_giochannel_blind_new(
 730                                 captive_vfs_parent_object->corba_parent_giochanel_blind_source,  /* giochannel_orig */
 731                                 (CAPTIVE_VFS_OBJECT(captive_vfs_parent_object)->options.rwmode!=CAPTIVE_OPTION_RWMODE_RO)); /* writeable */
 732         CaptiveIOChannel_object=impl_Captive_CaptiveIOChannel__create(captive_corba_poa,
 733                         captive_vfs_parent_object->corba_parent_giochanel_blind,&captive_corba_ev);
 734         g_assert(validate_CORBA_Environment(&captive_corba_ev));
 735
 736         /* Create the socket needed for 'sandbox_parent_own_orbit_socket' below
 737          * by CORBA_ORB_object_to_string()->ORBit_marshal_object()->IOP_generate_profiles()->ORBit_ORB_start_servers...
 738          */
 739         {
 740 char *GLogFunc_IOR;
 741                 GLogFunc_IOR=CORBA_ORB_object_to_string(captive_corba_orb,GLogFunc_object,&captive_corba_ev);
 742                 g_assert(validate_CORBA_Environment(&captive_corba_ev));
 743                 g_assert(GLogFunc_IOR!=NULL);
 744                 CORBA_free(GLogFunc_IOR);
 745                 }
 746
 747         if (sandbox_parent_own_orbit_dir && !sandbox_parent_own_orbit_socket) {
 748 DIR *dir;
 749 struct dirent *dirent;
 750
 751                 dir=opendir(sandbox_parent_own_orbit_dir);
 752                 g_assert(dir!=NULL);
 753
 754                 while (errno=0,(dirent=readdir(dir))) {
 755                         if (!strcmp(dirent->d_name,".") || !strcmp(dirent->d_name,".."))
 756                                 continue;
 757                         g_assert(sandbox_parent_own_orbit_socket==NULL);
 758                         sandbox_parent_own_orbit_socket=g_strdup_printf("%s/%s",sandbox_parent_own_orbit_dir,dirent->d_name);
 759                         }
 760                 g_assert(errno==0);
 761                 errint=closedir(dir);
 762                 g_assert(errint==0);
 763                 g_assert(sandbox_parent_own_orbit_socket!=NULL);
 764                 }
 765
 766         if (child_chroot_pid_hashkey_dir) {
 767 gchar *s;
 768
 769                 child_chroot_parent_own_orbit_dir=captive_printf_alloca("%s/%s",child_chroot_pid_hashkey_dir,sandbox_parent_own_orbit_dir);
 770                 s=(/* de-const */ gchar *)child_chroot_parent_own_orbit_dir;
 771                 do {
 772                         s=strchr(s,'/');
 773                         if (s)
 774                                 *s=0;
 775                         if (*child_chroot_parent_own_orbit_dir) {
 776                                 errint=mkdir(child_chroot_parent_own_orbit_dir,0777);
 777                                 if (errint)
 778                                         g_assert(errno==EEXIST);
 779                                 else {
 780                                         /* chmod(2) it to prevent mode limitation by
 781                                          * active ulimit(2) of being executed by mount(8).
 782                                          */
 783                                         errint=chmod(child_chroot_parent_own_orbit_dir,0777);
 784                                         g_assert(errint==0);
 785                                         }
 786                                 }
 787                         if (s)
 788                                 *s++='/';
 789                         } while (s);
 790                 child_chroot_parent_own_orbit_socket=captive_printf_alloca("%s/%s",
 791                                 child_chroot_pid_hashkey_dir,sandbox_parent_own_orbit_socket);
 792                 errint=link(sandbox_parent_own_orbit_socket,child_chroot_parent_own_orbit_socket);
 793                 g_assert(errint==0);
 794                 /* chmod(2)s also our orig. one (!) but this one is protected by its 0777 directory. */
 795                 errint=chmod(child_chroot_parent_own_orbit_socket,0666);
 796                 g_assert(errint==0);
 797                 }
 798
 799         options_corba.g_log_func=CORBA_Object_duplicate(GLogFunc_object,&captive_corba_ev);
 800         g_assert(validate_CORBA_Environment(&captive_corba_ev));
 801
 802         options_module_captive_to_options_module_corba(&options_corba.filesystem,&CAPTIVE_VFS_OBJECT(captive_vfs_parent_object)->options.filesystem);
 803         /* Prevent secondary captive_giochannel_blind inside of our sandbox child
 804          * as we already have one captive_giochannel_blind in the parent.
 805          */
 806         options_corba.rwmode        =(CAPTIVE_VFS_OBJECT(captive_vfs_parent_object)->options.rwmode == CAPTIVE_OPTION_RWMODE_BLIND ? CAPTIVE_OPTION_RWMODE_RW
 807                         : CAPTIVE_VFS_OBJECT(captive_vfs_parent_object)->options.rwmode);
 808         options_corba.media         =CAPTIVE_VFS_OBJECT(captive_vfs_parent_object)->options.media;
 809         options_corba.debug_messages=CAPTIVE_VFS_OBJECT(captive_vfs_parent_object)->options.debug_messages;
 810
 811         options_corba.image_iochannel=CORBA_Object_duplicate(CaptiveIOChannel_object,&captive_corba_ev);
 812         g_assert(validate_CORBA_Environment(&captive_corba_ev));
 813
 814         load_module_length=g_list_length(CAPTIVE_VFS_OBJECT(captive_vfs_parent_object)->options.load_module);
 815         options_corba.load_module._maximum=load_module_length;
 816         options_corba.load_module._length=load_module_length;
 817         options_corba.load_module._buffer=Captive_CaptiveOptionsModuleList_allocbuf(options_corba.load_module._maximum);
 818         options_corba.load_module._release=TRUE;
 819         for (load_moduleui=0,load_module_node=CAPTIVE_VFS_OBJECT(captive_vfs_parent_object)->options.load_module;
 820                         load_module_node;
 821                         load_moduleui++,load_module_node=load_module_node->next) {
 822                 options_module=load_module_node->data;
 823                 options_module_captive_to_options_module_corba(options_corba.load_module._buffer+load_moduleui,options_module);
 824                 }
 825
 826         Captive_Vfs_init(Vfs_object,&options_corba,&captive_corba_ev);
 827         g_assert(validate_CORBA_Environment(&captive_corba_ev));
 828
 829         Captive_CaptiveOptions__freekids(&options_corba,
 830                         NULL);  /* d; unused */
 831
 832         captive_vfs_parent_object->corba_Vfs_object=Vfs_object;
 833         captive_vfs_parent_object->corba_GLogFunc_object=GLogFunc_object;
 834         captive_vfs_parent_object->corba_CaptiveIOChannel_object=CaptiveIOChannel_object;
 835
 836         if (CAPTIVE_VFS_OBJECT(captive_vfs_parent_object)->options.bug_pathname)
 837                 sandbox_parent_bug_doc_make(captive_vfs_parent_object);
 838 }
 839
 840 static void fd_shiftup(int *fdp)
 841 {
 842         g_return_if_fail(fdp!=NULL);
 843
 844         while (*fdp<=2 /* STDERR */) {
 845                 *fdp=dup(*fdp);
 846                 g_assert(*fdp!=-1);
 847                 }
 848 }
 849
 850 void captive_sandbox_fd_closeup(int fd_first_to_delete)
 851 {
 852 DIR *dir;
 853 int errint;
 854 int dir_fd;
 855 struct dirent *dirent;
 856
 857         dir=opendir("/proc/self/fd/");
 858         g_return_if_fail(dir!=NULL);
 859         dir_fd=dirfd(dir);
 860         g_return_if_fail(dir_fd!=-1);
 861
 862         while (errno=0,(dirent=readdir(dir))) {
 863 long dirent_fd;
 864 char *endptr;
 865
 866                 if (0
 867                                 || !strcmp(dirent->d_name,".")
 868                                 || !strcmp(dirent->d_name,".."))
 869                         continue;
 870                 dirent_fd=strtol(dirent->d_name,&endptr,10 /* base */);
 871                 g_assert(dirent_fd>=0 && (!endptr || !*endptr));
 872                 if (dirent_fd<fd_first_to_delete || dirent_fd==dir_fd)
 873                         continue;
 874
 875                 errint=close(dirent_fd);
 876                 g_assert(errint==0);
 877                 errno=0;
 878                 errint=close(dirent_fd);
 879                 g_assert(errint==-1); g_assert(errno==EBADF);
 880                 }
 881         g_return_if_fail(errno==0);     /* check for EOF */
 882
 883         errint=closedir(dir);
 884         g_return_if_fail(errint==0);
 885         errno=0;
 886         close(dir_fd); g_assert(errno==EBADF);  /* just a bit of paranoia; it should be already closed by closedir() */
 887 }
 888
 889 gboolean captive_sandbox_spawn(CaptiveVfsParentObject *captive_vfs_parent_object)
 890 {
 891 /* Vfs_IOR_fds[0] for reading by sandbox_parent() - client,
 892  * Vfs_IOR_fds[1] for writing by sandbox_child()  - server
 893  */
 894 int Vfs_IOR_fds[2],parentheart_fds[2];
 895 int errint;
 896 gboolean errbool;
 897
 898         g_return_val_if_fail(CAPTIVE_VFS_PARENT_IS_OBJECT(captive_vfs_parent_object),FALSE);
 899
 900         errint=pipe(Vfs_IOR_fds);
 901         g_return_val_if_fail(errint==0,FALSE);
 902         errint=pipe(parentheart_fds);
 903         g_return_val_if_fail(errint==0,FALSE);
 904
 905         /* Currently never called anywhere:
 906          *     errbool=corba_shutdown(&captive_corba_ev,&captive_corba_orb,&captive_corba_poa);
 907          *     g_assert(errbool==TRUE);
 908          */
 909
 910         if (CAPTIVE_VFS_OBJECT(captive_vfs_parent_object)->options.sandbox_server_ior) {
 911                 g_assert(CAPTIVE_VFS_OBJECT(captive_vfs_parent_object)->options.sandbox_server_argv==NULL);
 912
 913                 errbool=corba_init("captive-sandbox-parent",&captive_corba_ev,&captive_corba_orb,&captive_corba_poa);
 914                 g_assert(errbool==TRUE);
 915
 916                 captive_vfs_parent_object->corba_parentheart_fds_1=-1;
 917                 captive_vfs_parent_object->corba_child_pid=-1;
 918                 sandbox_parent(
 919                                 CAPTIVE_VFS_OBJECT(captive_vfs_parent_object)->options.sandbox_server_ior,      /* Vfs_IOR */
 920                                 NULL,   /* child_chroot_pid_hashkey_dir */
 921                                 captive_vfs_parent_object);     /* captive_vfs_parent_object */
 922                 return TRUE;
 923                 }
 924
 925         g_assert(CAPTIVE_VFS_OBJECT(captive_vfs_parent_object)->options.sandbox_server_argv!=NULL);
 926         switch ((captive_vfs_parent_object->corba_child_pid=fork())) {
 927                 case -1:        /* error */
 928                         g_return_val_if_reached(FALSE);
 929
 930                 case 0: { /* child */
 931 const char *sandbox_argv0;
 932 int execv_rc;
 933
 934                         errint=close(Vfs_IOR_fds[0]);   /* close Vfs_IOR_fd_read */
 935                         g_return_val_if_fail(errint==0,FALSE);
 936                         errint=close(parentheart_fds[1]);       /* close parentheart_fd_write */
 937                         g_return_val_if_fail(errint==0,FALSE);
 938
 939                         fd_shiftup(Vfs_IOR_fds+1);      /* Vfs_IOR_fd_write */
 940                         fd_shiftup(parentheart_fds+0);  /* parentheart_fd_read */
 941                         errint=dup2(Vfs_IOR_fds[1],1 /* STDOUT */);     /* Vfs_IOR_fd_write */
 942                         g_return_val_if_fail(errint==1 /* STDOUT */,FALSE);
 943                         errint=dup2(parentheart_fds[0],0 /* STDIN */);  /* parentheart_fd_read */
 944                         g_return_val_if_fail(errint==0 /* STDIN */,FALSE);
 945
 946                         captive_sandbox_fd_closeup(2 /* STDERR */ +1);
 947
 948                         sandbox_argv0=CAPTIVE_VFS_OBJECT(captive_vfs_parent_object)->options.sandbox_server_argv[0];
 949                         execv_rc=execv(sandbox_argv0,
 950                                         /* re-const */ (char * const *)CAPTIVE_VFS_OBJECT(captive_vfs_parent_object)->options.sandbox_server_argv);
 951                         g_warning(_("Failed to spawn sandbox server - execv(\"%s\",...)=%d: %m"),sandbox_argv0,execv_rc);
 952                         g_return_val_if_reached(FALSE);
 953                         } /* NOTREACHED */
 954
 955                 default: {      /* parent */
 956 gchar *Vfs_IOR;
 957 gchar *child_chroot_pid_hashkey_dir;
 958
 959                         errint=close(Vfs_IOR_fds[1]);   /* close Vfs_IOR_fd_write */
 960                         g_return_val_if_fail(errint==0,FALSE);
 961                         errint=close(parentheart_fds[0]);       /* close parentheart_fd_read */
 962                         g_return_val_if_fail(errint==0,FALSE);
 963                         errint=fcntl(parentheart_fds[1],F_SETFD,FD_CLOEXEC);
 964                         /* This fcntl(2) may not be enough - some fork(2) may duplicate this
 965                          * write descriptor and even if we do some process finish the child
 966                          * may remain alone connected with some unknown fork(2)er from us.
 967                          * Currently I am not aware such case would occur.
 968                          */
 969                         g_return_val_if_fail(errint==0,FALSE);
 970                         captive_vfs_parent_object->corba_parentheart_fds_1=parentheart_fds[1];
 971
 972                         Vfs_IOR=sandbox_parent_read_ior(
 973                                         Vfs_IOR_fds[0], /* Vfs_IOR_fd_read */
 974                                         &child_chroot_pid_hashkey_dir,
 975                                         captive_vfs_parent_object);
 976
 977                         sandbox_parent(
 978                                         Vfs_IOR,        /* Vfs_IOR */
 979                                         child_chroot_pid_hashkey_dir,   /* child_chroot_pid_hashkey_dir */
 980                                         captive_vfs_parent_object);     /* captive_vfs_parent_object */
 981
 982                         g_free(Vfs_IOR);
 983                         g_free(child_chroot_pid_hashkey_dir);
 984
 985                         /* 'parentheart_fds[1]' - parentheart_fd_write - is left open here */
 986                         return TRUE;
 987                         }
 988                 }
 989         /* NOTREACHED */
 990         g_return_val_if_reached(FALSE);
 991 }
 992
 993
 994 GnomeVFSResult captive_sandbox_parent_return_from_CORBA_Environment
 995                 (CORBA_Environment *evp,CaptiveVfsParentObject *captive_vfs_parent_object)
 996 {
 997 GnomeVFSResult r;
 998
 999         if (evp->_major==CORBA_NO_EXCEPTION)
1000                 return GNOME_VFS_OK;
1001
1002         /* If !CAPTIVE_VFS_OBJECT(captive_vfs_parent_object)->options.sandbox_server_argv it is CAPTIVE_VFS_OBJECT(captive_vfs_parent_object)->options.sandbox_server_ior
1003          * where we cannot do any restart anyway.
1004          */
1005         if (captive_vfs_parent_object && CAPTIVE_VFS_OBJECT(captive_vfs_parent_object)->options.sandbox_server_argv
1006                         && (evp->_major==CORBA_SYSTEM_EXCEPTION && !strcmp(ex_CORBA_COMM_FAILURE,CORBA_exception_id(evp)))) {
1007                 r=GNOME_VFS_ERROR_SERVICE_NOT_AVAILABLE;
1008                 if (captive_vfs_parent_object->corba_Vfs_object!=CORBA_OBJECT_NIL)
1009                         captive_vfs_parent_object_aborted(captive_vfs_parent_object);   /* errors ignored */
1010                 }
1011         else if (evp->_major==CORBA_USER_EXCEPTION && !strcmp(ex_Captive_GnomeVFSResultException,CORBA_exception_id(evp))) {
1012                 r=((Captive_GnomeVFSResultException *)CORBA_exception_value(evp))->gnome_vfs_result;
1013                 g_assert(r!=GNOME_VFS_ERROR_SERVICE_NOT_AVAILABLE);     /* code reserved for sandbox restarts */
1014                 }
1015         else {
1016                 r=GNOME_VFS_ERROR_GENERIC;
1017                 g_warning(_("CORBA Exception occured: id=\"%s\", value=%p"),
1018                                 CORBA_exception_id(evp),CORBA_exception_value(evp));
1019                 }
1020         CORBA_exception_free(evp);
1021
1022         return r;
1023 }
1024
1025
1026 void captive_sandbox_child_GnomeVFSResultException_throw(CORBA_Environment *evp,GnomeVFSResult errvfsresult)
1027 {
1028 Captive_GnomeVFSResultException *gnome_vfs_result_exception;
1029
1030         g_return_if_fail(evp!=NULL);
1031
1032         gnome_vfs_result_exception=Captive_GnomeVFSResultException__alloc();
1033         gnome_vfs_result_exception->gnome_vfs_result=errvfsresult;
1034         CORBA_exception_set(evp,CORBA_USER_EXCEPTION,ex_Captive_GnomeVFSResultException,gnome_vfs_result_exception);
1035 }