source/lib/util.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    Samba utility functions
   4    Copyright (C) Andrew Tridgell 1992-1998
   5    Copyright (C) Jeremy Allison 2001-2002
   6    Copyright (C) Simo Sorce 2001
   7    Copyright (C) Anthony Liguori 2003
   8
   9    This program is free software; you can redistribute it and/or modify
  10    it under the terms of the GNU General Public License as published by
  11    the Free Software Foundation; either version 2 of the License, or
  12    (at your option) any later version.
  13
  14    This program is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17    GNU General Public License for more details.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with this program; if not, write to the Free Software
  21    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  22 */
  23
  24 #include "includes.h"
  25
  26 #if (defined(HAVE_NETGROUP) && defined (WITH_AUTOMOUNT))
  27 #ifdef WITH_NISPLUS_HOME
  28 #ifdef BROKEN_NISPLUS_INCLUDE_FILES
  29 /*
  30  * The following lines are needed due to buggy include files
  31  * in Solaris 2.6 which define GROUP in both /usr/include/sys/acl.h and
  32  * also in /usr/include/rpcsvc/nis.h. The definitions conflict. JRA.
  33  * Also GROUP_OBJ is defined as 0x4 in /usr/include/sys/acl.h and as
  34  * an enum in /usr/include/rpcsvc/nis.h.
  35  */
  36
  37 #if defined(GROUP)
  38 #undef GROUP
  39 #endif
  40
  41 #if defined(GROUP_OBJ)
  42 #undef GROUP_OBJ
  43 #endif
  44
  45 #endif /* BROKEN_NISPLUS_INCLUDE_FILES */
  46
  47 #include <rpcsvc/nis.h>
  48
  49 #else /* !WITH_NISPLUS_HOME */
  50
  51 #include "rpcsvc/ypclnt.h"
  52
  53 #endif /* WITH_NISPLUS_HOME */
  54 #endif /* HAVE_NETGROUP && WITH_AUTOMOUNT */
  55
  56 int Protocol = PROTOCOL_COREPLUS;
  57
  58 /* a default finfo structure to ensure all fields are sensible */
  59 file_info def_finfo = {-1,0,0,0,0,0,0,"",""};
  60
  61 /* this is used by the chaining code */
  62 int chain_size = 0;
  63
  64 int trans_num = 0;
  65
  66 /*
  67    case handling on filenames
  68 */
  69 int case_default = CASE_LOWER;
  70
  71 /* the following control case operations - they are put here so the
  72    client can link easily */
  73 BOOL case_sensitive;
  74 BOOL case_preserve;
  75 BOOL use_mangled_map = False;
  76 BOOL short_case_preserve;
  77 BOOL case_mangle;
  78
  79 static enum remote_arch_types ra_type = RA_UNKNOWN;
  80 pstring user_socket_options=DEFAULT_SOCKET_OPTIONS;
  81
  82 /***********************************************************************
  83  Definitions for all names.
  84 ***********************************************************************/
  85
  86 static char *smb_myname;
  87 static char *smb_myworkgroup;
  88 static char *smb_scope;
  89 static int smb_num_netbios_names;
  90 static char **smb_my_netbios_names;
  91
  92 /***********************************************************************
  93  Allocate and set myname. Ensure upper case.
  94 ***********************************************************************/
  95
  96 BOOL set_global_myname(const char *myname)
  97 {
  98         SAFE_FREE(smb_myname);
  99         smb_myname = strdup(myname);
 100         if (!smb_myname)
 101                 return False;
 102         strupper(smb_myname);
 103         return True;
 104 }
 105
 106 const char *global_myname(void)
 107 {
 108         return smb_myname;
 109 }
 110
 111 /***********************************************************************
 112  Allocate and set myworkgroup. Ensure upper case.
 113 ***********************************************************************/
 114
 115 BOOL set_global_myworkgroup(const char *myworkgroup)
 116 {
 117         SAFE_FREE(smb_myworkgroup);
 118         smb_myworkgroup = strdup(myworkgroup);
 119         if (!smb_myworkgroup)
 120                 return False;
 121         strupper(smb_myworkgroup);
 122         return True;
 123 }
 124
 125 const char *lp_workgroup(void)
 126 {
 127         return smb_myworkgroup;
 128 }
 129
 130 /***********************************************************************
 131  Allocate and set scope. Ensure upper case.
 132 ***********************************************************************/
 133
 134 BOOL set_global_scope(const char *scope)
 135 {
 136         SAFE_FREE(smb_scope);
 137         smb_scope = strdup(scope);
 138         if (!smb_scope)
 139                 return False;
 140         strupper(smb_scope);
 141         return True;
 142 }
 143
 144 /*********************************************************************
 145  Ensure scope is never null string.
 146 *********************************************************************/
 147
 148 const char *global_scope(void)
 149 {
 150         if (!smb_scope)
 151                 set_global_scope("");
 152         return smb_scope;
 153 }
 154
 155 static void free_netbios_names_array(void)
 156 {
 157         int i;
 158
 159         for (i = 0; i < smb_num_netbios_names; i++)
 160                 SAFE_FREE(smb_my_netbios_names[i]);
 161
 162         SAFE_FREE(smb_my_netbios_names);
 163         smb_num_netbios_names = 0;
 164 }
 165
 166 static BOOL allocate_my_netbios_names_array(size_t number)
 167 {
 168         free_netbios_names_array();
 169
 170         smb_num_netbios_names = number + 1;
 171         smb_my_netbios_names = (char **)malloc( sizeof(char *) * smb_num_netbios_names );
 172
 173         if (!smb_my_netbios_names)
 174                 return False;
 175
 176         memset(smb_my_netbios_names, '\0', sizeof(char *) * smb_num_netbios_names);
 177         return True;
 178 }
 179
 180 static BOOL set_my_netbios_names(const char *name, int i)
 181 {
 182         SAFE_FREE(smb_my_netbios_names[i]);
 183
 184         smb_my_netbios_names[i] = strdup(name);
 185         if (!smb_my_netbios_names[i])
 186                 return False;
 187         strupper(smb_my_netbios_names[i]);
 188         return True;
 189 }
 190
 191 const char *my_netbios_names(int i)
 192 {
 193         return smb_my_netbios_names[i];
 194 }
 195
 196 BOOL set_netbios_aliases(const char **str_array)
 197 {
 198         size_t namecount;
 199
 200         /* Work out the max number of netbios aliases that we have */
 201         for( namecount=0; str_array && (str_array[namecount] != NULL); namecount++ )
 202                 ;
 203
 204         if ( global_myname() && *global_myname())
 205                 namecount++;
 206
 207         /* Allocate space for the netbios aliases */
 208         if (!allocate_my_netbios_names_array(namecount))
 209                 return False;
 210
 211         /* Use the global_myname string first */
 212         namecount=0;
 213         if ( global_myname() && *global_myname()) {
 214                 set_my_netbios_names( global_myname(), namecount );
 215                 namecount++;
 216         }
 217
 218         if (str_array) {
 219                 size_t i;
 220                 for ( i = 0; str_array[i] != NULL; i++) {
 221                         size_t n;
 222                         BOOL duplicate = False;
 223
 224                         /* Look for duplicates */
 225                         for( n=0; n<namecount; n++ ) {
 226                                 if( strequal( str_array[i], my_netbios_names(n) ) ) {
 227                                         duplicate = True;
 228                                         break;
 229                                 }
 230                         }
 231                         if (!duplicate) {
 232                                 if (!set_my_netbios_names(str_array[i], namecount))
 233                                         return False;
 234                                 namecount++;
 235                         }
 236                 }
 237         }
 238         return True;
 239 }
 240
 241 /****************************************************************************
 242   Common name initialization code.
 243 ****************************************************************************/
 244
 245 BOOL init_names(void)
 246 {
 247         extern fstring local_machine;
 248         char *p;
 249         int n;
 250
 251         if (global_myname() == NULL || *global_myname() == '\0') {
 252                 if (!set_global_myname(myhostname())) {
 253                         DEBUG( 0, ( "init_structs: malloc fail.\n" ) );
 254                         return False;
 255                 }
 256         }
 257
 258         if (!set_netbios_aliases(lp_netbios_aliases())) {
 259                 DEBUG( 0, ( "init_structs: malloc fail.\n" ) );
 260                 return False;
 261         }
 262
 263         fstrcpy( local_machine, global_myname() );
 264         trim_string( local_machine, " ", " " );
 265         p = strchr( local_machine, ' ' );
 266         if (p)
 267                 *p = 0;
 268         strlower( local_machine );
 269
 270         DEBUG( 5, ("Netbios name list:-\n") );
 271         for( n=0; my_netbios_names(n); n++ )
 272                 DEBUGADD( 5, ( "my_netbios_names[%d]=\"%s\"\n", n, my_netbios_names(n) ) );
 273
 274         return( True );
 275 }
 276
 277 /**************************************************************************n
 278  Find a suitable temporary directory. The result should be copied immediately
 279  as it may be overwritten by a subsequent call.
 280 ****************************************************************************/
 281
 282 const char *tmpdir(void)
 283 {
 284         char *p;
 285         if ((p = getenv("TMPDIR")))
 286                 return p;
 287         return "/tmp";
 288 }
 289
 290 /****************************************************************************
 291  Determine whether we are in the specified group.
 292 ****************************************************************************/
 293
 294 BOOL in_group(gid_t group, gid_t current_gid, int ngroups, const gid_t *groups)
 295 {
 296         int i;
 297
 298         if (group == current_gid)
 299                 return(True);
 300
 301         for (i=0;i<ngroups;i++)
 302                 if (group == groups[i])
 303                         return(True);
 304
 305         return(False);
 306 }
 307
 308 /****************************************************************************
 309  Like atoi but gets the value up to the separator character.
 310 ****************************************************************************/
 311
 312 static const char *Atoic(const char *p, int *n, const char *c)
 313 {
 314         if (!isdigit((const int)*p)) {
 315                 DEBUG(5, ("Atoic: malformed number\n"));
 316                 return NULL;
 317         }
 318
 319         (*n) = atoi(p);
 320
 321         while ((*p) && isdigit((int)*p))
 322                 p++;
 323
 324         if (strchr_m(c, *p) == NULL) {
 325                 DEBUG(5, ("Atoic: no separator characters (%s) not found\n", c));
 326                 return NULL;
 327         }
 328
 329         return p;
 330 }
 331
 332 /*************************************************************************
 333  Reads a list of numbers.
 334  *************************************************************************/
 335
 336 const char *get_numlist(const char *p, uint32 **num, int *count)
 337 {
 338         int val;
 339
 340         if (num == NULL || count == NULL)
 341                 return NULL;
 342
 343         (*count) = 0;
 344         (*num  ) = NULL;
 345
 346         while ((p = Atoic(p, &val, ":,")) != NULL && (*p) != ':') {
 347                 uint32 *tn;
 348
 349                 tn = Realloc((*num), ((*count)+1) * sizeof(uint32));
 350                 if (tn == NULL) {
 351                         SAFE_FREE(*num);
 352                         return NULL;
 353                 } else
 354                         (*num) = tn;
 355                 (*num)[(*count)] = val;
 356                 (*count)++;
 357                 p++;
 358         }
 359
 360         return p;
 361 }
 362
 363 /*******************************************************************
 364  Check if a file exists - call vfs_file_exist for samba files.
 365 ********************************************************************/
 366
 367 BOOL file_exist(const char *fname,SMB_STRUCT_STAT *sbuf)
 368 {
 369         SMB_STRUCT_STAT st;
 370         if (!sbuf)
 371                 sbuf = &st;
 372
 373         if (sys_stat(fname,sbuf) != 0)
 374                 return(False);
 375
 376         return((S_ISREG(sbuf->st_mode)) || (S_ISFIFO(sbuf->st_mode)));
 377 }
 378
 379 /*******************************************************************
 380  Check a files mod time.
 381 ********************************************************************/
 382
 383 time_t file_modtime(const char *fname)
 384 {
 385         SMB_STRUCT_STAT st;
 386
 387         if (sys_stat(fname,&st) != 0)
 388                 return(0);
 389
 390         return(st.st_mtime);
 391 }
 392
 393 /*******************************************************************
 394  Check if a directory exists.
 395 ********************************************************************/
 396
 397 BOOL directory_exist(char *dname,SMB_STRUCT_STAT *st)
 398 {
 399         SMB_STRUCT_STAT st2;
 400         BOOL ret;
 401
 402         if (!st)
 403                 st = &st2;
 404
 405         if (sys_stat(dname,st) != 0)
 406                 return(False);
 407
 408         ret = S_ISDIR(st->st_mode);
 409         if(!ret)
 410                 errno = ENOTDIR;
 411         return ret;
 412 }
 413
 414 /*******************************************************************
 415  Returns the size in bytes of the named file.
 416 ********************************************************************/
 417
 418 SMB_OFF_T get_file_size(char *file_name)
 419 {
 420         SMB_STRUCT_STAT buf;
 421         buf.st_size = 0;
 422         if(sys_stat(file_name,&buf) != 0)
 423                 return (SMB_OFF_T)-1;
 424         return(buf.st_size);
 425 }
 426
 427 /*******************************************************************
 428  Return a string representing an attribute for a file.
 429 ********************************************************************/
 430
 431 char *attrib_string(uint16 mode)
 432 {
 433         static fstring attrstr;
 434
 435         attrstr[0] = 0;
 436
 437         if (mode & aVOLID) fstrcat(attrstr,"V");
 438         if (mode & aDIR) fstrcat(attrstr,"D");
 439         if (mode & aARCH) fstrcat(attrstr,"A");
 440         if (mode & aHIDDEN) fstrcat(attrstr,"H");
 441         if (mode & aSYSTEM) fstrcat(attrstr,"S");
 442         if (mode & aRONLY) fstrcat(attrstr,"R");
 443
 444         return(attrstr);
 445 }
 446
 447 /*******************************************************************
 448  Show a smb message structure.
 449 ********************************************************************/
 450
 451 void show_msg(char *buf)
 452 {
 453         int i;
 454         int bcc=0;
 455
 456         if (!DEBUGLVL(5))
 457                 return;
 458
 459         DEBUG(5,("size=%d\nsmb_com=0x%x\nsmb_rcls=%d\nsmb_reh=%d\nsmb_err=%d\nsmb_flg=%d\nsmb_flg2=%d\n",
 460                         smb_len(buf),
 461                         (int)CVAL(buf,smb_com),
 462                         (int)CVAL(buf,smb_rcls),
 463                         (int)CVAL(buf,smb_reh),
 464                         (int)SVAL(buf,smb_err),
 465                         (int)CVAL(buf,smb_flg),
 466                         (int)SVAL(buf,smb_flg2)));
 467         DEBUGADD(5,("smb_tid=%d\nsmb_pid=%d\nsmb_uid=%d\nsmb_mid=%d\n",
 468                         (int)SVAL(buf,smb_tid),
 469                         (int)SVAL(buf,smb_pid),
 470                         (int)SVAL(buf,smb_uid),
 471                         (int)SVAL(buf,smb_mid)));
 472         DEBUGADD(5,("smt_wct=%d\n",(int)CVAL(buf,smb_wct)));
 473
 474         for (i=0;i<(int)CVAL(buf,smb_wct);i++)
 475                 DEBUGADD(5,("smb_vwv[%2d]=%5d (0x%X)\n",i,
 476                         SVAL(buf,smb_vwv+2*i),SVAL(buf,smb_vwv+2*i)));
 477
 478         bcc = (int)SVAL(buf,smb_vwv+2*(CVAL(buf,smb_wct)));
 479
 480         DEBUGADD(5,("smb_bcc=%d\n",bcc));
 481
 482         if (DEBUGLEVEL < 10)
 483                 return;
 484
 485         if (DEBUGLEVEL < 50)
 486                 bcc = MIN(bcc, 512);
 487
 488         dump_data(10, smb_buf(buf), bcc);
 489 }
 490
 491 /*******************************************************************
 492  Set the length and marker of an smb packet.
 493 ********************************************************************/
 494
 495 void smb_setlen(char *buf,int len)
 496 {
 497         _smb_setlen(buf,len);
 498
 499         SCVAL(buf,4,0xFF);
 500         SCVAL(buf,5,'S');
 501         SCVAL(buf,6,'M');
 502         SCVAL(buf,7,'B');
 503 }
 504
 505 /*******************************************************************
 506  Setup the word count and byte count for a smb message.
 507 ********************************************************************/
 508
 509 int set_message(char *buf,int num_words,int num_bytes,BOOL zero)
 510 {
 511         if (zero)
 512                 memset(buf + smb_size,'\0',num_words*2 + num_bytes);
 513         SCVAL(buf,smb_wct,num_words);
 514         SSVAL(buf,smb_vwv + num_words*SIZEOFWORD,num_bytes);
 515         smb_setlen(buf,smb_size + num_words*2 + num_bytes - 4);
 516         return (smb_size + num_words*2 + num_bytes);
 517 }
 518
 519 /*******************************************************************
 520  Setup only the byte count for a smb message.
 521 ********************************************************************/
 522
 523 int set_message_bcc(char *buf,int num_bytes)
 524 {
 525         int num_words = CVAL(buf,smb_wct);
 526         SSVAL(buf,smb_vwv + num_words*SIZEOFWORD,num_bytes);
 527         smb_setlen(buf,smb_size + num_words*2 + num_bytes - 4);
 528         return (smb_size + num_words*2 + num_bytes);
 529 }
 530
 531 /*******************************************************************
 532  Setup only the byte count for a smb message, using the end of the
 533  message as a marker.
 534 ********************************************************************/
 535
 536 int set_message_end(void *outbuf,void *end_ptr)
 537 {
 538         return set_message_bcc((char *)outbuf,PTR_DIFF(end_ptr,smb_buf((char *)outbuf)));
 539 }
 540
 541 /*******************************************************************
 542  Reduce a file name, removing .. elements.
 543 ********************************************************************/
 544
 545 void dos_clean_name(char *s)
 546 {
 547         char *p=NULL;
 548
 549         DEBUG(3,("dos_clean_name [%s]\n",s));
 550
 551         /* remove any double slashes */
 552         all_string_sub(s, "\\\\", "\\", 0);
 553
 554         while ((p = strstr(s,"\\..\\")) != NULL) {
 555                 pstring s1;
 556
 557                 *p = 0;
 558                 pstrcpy(s1,p+3);
 559
 560                 if ((p=strrchr_m(s,'\\')) != NULL)
 561                         *p = 0;
 562                 else
 563                         *s = 0;
 564                 pstrcat(s,s1);
 565         }
 566
 567         trim_string(s,NULL,"\\..");
 568
 569         all_string_sub(s, "\\.\\", "\\", 0);
 570 }
 571
 572 /*******************************************************************
 573  Reduce a file name, removing .. elements.
 574 ********************************************************************/
 575
 576 void unix_clean_name(char *s)
 577 {
 578         char *p=NULL;
 579
 580         DEBUG(3,("unix_clean_name [%s]\n",s));
 581
 582         /* remove any double slashes */
 583         all_string_sub(s, "//","/", 0);
 584
 585         /* Remove leading ./ characters */
 586         if(strncmp(s, "./", 2) == 0) {
 587                 trim_string(s, "./", NULL);
 588                 if(*s == 0)
 589                         pstrcpy(s,"./");
 590         }
 591
 592         while ((p = strstr(s,"/../")) != NULL) {
 593                 pstring s1;
 594
 595                 *p = 0;
 596                 pstrcpy(s1,p+3);
 597
 598                 if ((p=strrchr_m(s,'/')) != NULL)
 599                         *p = 0;
 600                 else
 601                         *s = 0;
 602                 pstrcat(s,s1);
 603         }
 604
 605         trim_string(s,NULL,"/..");
 606 }
 607
 608 /*******************************************************************
 609  Convert '\' to '/'.
 610  Reduce a file name, removing or reducing /../ , /./ , // elements.
 611  Remove also any trailing . and /
 612  Return a new allocated string.
 613 ********************************************************************/
 614
 615 smb_ucs2_t *unix_clean_path(const smb_ucs2_t *s)
 616 {
 617         smb_ucs2_t *ns;
 618         smb_ucs2_t *p, *r, *t;
 619
 620         DEBUG(3, ("unix_clean_path\n")); /*  [%unicode]\n")); */
 621         if(!s)
 622                 return NULL;
 623
 624         /* convert '\' to '/' */
 625         ns = strdup_w(s);
 626         if (!ns)
 627                 return NULL;
 628         unix_format_w(ns);
 629
 630         /* remove all double slashes */
 631         p = ns;
 632         ns = all_string_sub_wa(p, "//", "/");
 633         SAFE_FREE(p);
 634         if (!ns)
 635                 return NULL;
 636
 637         /* remove any /./ */
 638         p = ns;
 639         ns = all_string_sub_wa(p, "/./", "/");
 640         SAFE_FREE(p);
 641         if (!ns)
 642                 return NULL;
 643
 644         /* reduce any /../ */
 645         t = ns;
 646         while (*t && (r = strstr_wa(t, "/.."))) {
 647                 t = &(r[3]);
 648                 if (*t == UCS2_CHAR('/') || *t == 0) {
 649                         *r = 0;
 650                         p = strrchr_w(ns, UCS2_CHAR('/'));
 651                         if (!p)
 652                                 p = ns;
 653                         if (*t == 0)
 654                                 *p = 0;
 655                         else
 656                                 memmove(p, t, (strlen_w(t) + 1) * sizeof(smb_ucs2_t));
 657                         t = p;
 658                 }
 659         }
 660
 661         /* remove any leading ./ trailing /. */
 662         trim_string_wa(ns, "./", "/.");
 663
 664         /* remove any leading and trailing / */
 665         trim_string_wa(ns, "/", "/");
 666
 667         return ns;
 668 }
 669
 670 /****************************************************************************
 671  Make a dir struct.
 672 ****************************************************************************/
 673
 674 void make_dir_struct(char *buf, const char *mask, const char *fname,SMB_OFF_T size,int mode,time_t date)
 675 {
 676         char *p;
 677         pstring mask2;
 678
 679         pstrcpy(mask2,mask);
 680
 681         if ((mode & aDIR) != 0)
 682                 size = 0;
 683
 684         memset(buf+1,' ',11);
 685         if ((p = strchr_m(mask2,'.')) != NULL) {
 686                 *p = 0;
 687                 push_ascii(buf+1,mask2,8, 0);
 688                 push_ascii(buf+9,p+1,3, 0);
 689                 *p = '.';
 690         } else
 691                 push_ascii(buf+1,mask2,11, 0);
 692
 693         memset(buf+21,'\0',DIR_STRUCT_SIZE-21);
 694         SCVAL(buf,21,mode);
 695         put_dos_date(buf,22,date);
 696         SSVAL(buf,26,size & 0xFFFF);
 697         SSVAL(buf,28,(size >> 16)&0xFFFF);
 698         push_ascii(buf+30,fname,12, case_sensitive ? 0 : STR_UPPER);
 699         DEBUG(8,("put name [%s] from [%s] into dir struct\n",buf+30, fname));
 700 }
 701
 702 /*******************************************************************
 703  Close the low 3 fd's and open dev/null in their place.
 704 ********************************************************************/
 705
 706 void close_low_fds(BOOL stderr_too)
 707 {
 708 #ifndef VALGRIND
 709         int fd;
 710         int i;
 711
 712         close(0);
 713         close(1);
 714
 715         if (stderr_too)
 716                 close(2);
 717
 718         /* try and use up these file descriptors, so silly
 719                 library routines writing to stdout etc won't cause havoc */
 720         for (i=0;i<3;i++) {
 721                 if (i == 2 && !stderr_too)
 722                         continue;
 723
 724                 fd = sys_open("/dev/null",O_RDWR,0);
 725                 if (fd < 0)
 726                         fd = sys_open("/dev/null",O_WRONLY,0);
 727                 if (fd < 0) {
 728                         DEBUG(0,("Can't open /dev/null\n"));
 729                         return;
 730                 }
 731                 if (fd != i) {
 732                         DEBUG(0,("Didn't get file descriptor %d\n",i));
 733                         return;
 734                 }
 735         }
 736 #endif
 737 }
 738
 739 /****************************************************************************
 740  Set a fd into blocking/nonblocking mode. Uses POSIX O_NONBLOCK if available,
 741  else
 742   if SYSV use O_NDELAY
 743   if BSD use FNDELAY
 744 ****************************************************************************/
 745
 746 int set_blocking(int fd, BOOL set)
 747 {
 748         int val;
 749 #ifdef O_NONBLOCK
 750 #define FLAG_TO_SET O_NONBLOCK
 751 #else
 752 #ifdef SYSV
 753 #define FLAG_TO_SET O_NDELAY
 754 #else /* BSD */
 755 #define FLAG_TO_SET FNDELAY
 756 #endif
 757 #endif
 758
 759         if((val = sys_fcntl_long(fd, F_GETFL, 0)) == -1)
 760                 return -1;
 761         if(set) /* Turn blocking on - ie. clear nonblock flag */
 762                 val &= ~FLAG_TO_SET;
 763         else
 764                 val |= FLAG_TO_SET;
 765         return sys_fcntl_long( fd, F_SETFL, val);
 766 #undef FLAG_TO_SET
 767 }
 768
 769 /****************************************************************************
 770  Transfer some data between two fd's.
 771 ****************************************************************************/
 772
 773 #ifndef TRANSFER_BUF_SIZE
 774 #define TRANSFER_BUF_SIZE 65536
 775 #endif
 776
 777 ssize_t transfer_file_internal(int infd, int outfd, size_t n, ssize_t (*read_fn)(int, void *, size_t),
 778                                                 ssize_t (*write_fn)(int, const void *, size_t))
 779 {
 780         char *buf;
 781         size_t total = 0;
 782         ssize_t read_ret;
 783         ssize_t write_ret;
 784         size_t num_to_read_thistime;
 785         size_t num_written = 0;
 786
 787         if ((buf = malloc(TRANSFER_BUF_SIZE)) == NULL)
 788                 return -1;
 789
 790         while (total < n) {
 791                 num_to_read_thistime = MIN((n - total), TRANSFER_BUF_SIZE);
 792
 793                 read_ret = (*read_fn)(infd, buf, num_to_read_thistime);
 794                 if (read_ret == -1) {
 795                         DEBUG(0,("transfer_file_internal: read failure. Error = %s\n", strerror(errno) ));
 796                         SAFE_FREE(buf);
 797                         return -1;
 798                 }
 799                 if (read_ret == 0)
 800                         break;
 801
 802                 num_written = 0;
 803
 804                 while (num_written < read_ret) {
 805                         write_ret = (*write_fn)(outfd,buf + num_written, read_ret - num_written);
 806
 807                         if (write_ret == -1) {
 808                                 DEBUG(0,("transfer_file_internal: write failure. Error = %s\n", strerror(errno) ));
 809                                 SAFE_FREE(buf);
 810                                 return -1;
 811                         }
 812                         if (write_ret == 0)
 813                                 return (ssize_t)total;
 814
 815                         num_written += (size_t)write_ret;
 816                 }
 817
 818                 total += (size_t)read_ret;
 819         }
 820
 821         SAFE_FREE(buf);
 822         return (ssize_t)total;
 823 }
 824
 825 SMB_OFF_T transfer_file(int infd,int outfd,SMB_OFF_T n)
 826 {
 827         return (SMB_OFF_T)transfer_file_internal(infd, outfd, (size_t)n, sys_read, sys_write);
 828 }
 829
 830 /*******************************************************************
 831  Sleep for a specified number of milliseconds.
 832 ********************************************************************/
 833
 834 void msleep(unsigned int t)
 835 {
 836         unsigned int tdiff=0;
 837         struct timeval tval,t1,t2;
 838         fd_set fds;
 839
 840         GetTimeOfDay(&t1);
 841         GetTimeOfDay(&t2);
 842
 843         while (tdiff < t) {
 844                 tval.tv_sec = (t-tdiff)/1000;
 845                 tval.tv_usec = 1000*((t-tdiff)%1000);
 846
 847                 /* Never wait for more than 1 sec. */
 848                 if (tval.tv_sec > 1) {
 849                         tval.tv_sec = 1;
 850                         tval.tv_usec = 0;
 851                 }
 852
 853                 FD_ZERO(&fds);
 854                 errno = 0;
 855                 sys_select_intr(0,&fds,NULL,NULL,&tval);
 856
 857                 GetTimeOfDay(&t2);
 858                 if (t2.tv_sec < t1.tv_sec) {
 859                         /* Someone adjusted time... */
 860                         t1 = t2;
 861                 }
 862
 863                 tdiff = TvalDiff(&t1,&t2);
 864         }
 865 }
 866
 867 /****************************************************************************
 868  Become a daemon, discarding the controlling terminal.
 869 ****************************************************************************/
 870
 871 void become_daemon(BOOL Fork)
 872 {
 873         if (Fork) {
 874                 if (sys_fork()) {
 875                         _exit(0);
 876                 }
 877         }
 878
 879   /* detach from the terminal */
 880 #ifdef HAVE_SETSID
 881         setsid();
 882 #elif defined(TIOCNOTTY)
 883         {
 884                 int i = sys_open("/dev/tty", O_RDWR, 0);
 885                 if (i != -1) {
 886                         ioctl(i, (int) TIOCNOTTY, (char *)0);
 887                         close(i);
 888                 }
 889         }
 890 #endif /* HAVE_SETSID */
 891
 892         /* Close fd's 0,1,2. Needed if started by rsh */
 893         close_low_fds(False);  /* Don't close stderr, let the debug system
 894                                   attach it to the logfile */
 895 }
 896
 897 /****************************************************************************
 898  Put up a yes/no prompt.
 899 ****************************************************************************/
 900
 901 BOOL yesno(char *p)
 902 {
 903         pstring ans;
 904         printf("%s",p);
 905
 906         if (!fgets(ans,sizeof(ans)-1,stdin))
 907                 return(False);
 908
 909         if (*ans == 'y' || *ans == 'Y')
 910                 return(True);
 911
 912         return(False);
 913 }
 914
 915 /****************************************************************************
 916  Expand a pointer to be a particular size.
 917 ****************************************************************************/
 918
 919 void *Realloc(void *p,size_t size)
 920 {
 921         void *ret=NULL;
 922
 923         if (size == 0) {
 924                 SAFE_FREE(p);
 925                 DEBUG(5,("Realloc asked for 0 bytes\n"));
 926                 return NULL;
 927         }
 928
 929         if (!p)
 930                 ret = (void *)malloc(size);
 931         else
 932                 ret = (void *)realloc(p,size);
 933
 934         if (!ret)
 935                 DEBUG(0,("Memory allocation error: failed to expand to %d bytes\n",(int)size));
 936
 937         return(ret);
 938 }
 939
 940 /****************************************************************************
 941  Free memory, checks for NULL.
 942  Use directly SAFE_FREE()
 943  Exists only because we need to pass a function pointer somewhere --SSS
 944 ****************************************************************************/
 945
 946 void safe_free(void *p)
 947 {
 948         SAFE_FREE(p);
 949 }
 950
 951 /****************************************************************************
 952  Get my own name and IP.
 953 ****************************************************************************/
 954
 955 BOOL get_myname(char *my_name)
 956 {
 957         pstring hostname;
 958
 959         *hostname = 0;
 960
 961         /* get my host name */
 962         if (gethostname(hostname, sizeof(hostname)) == -1) {
 963                 DEBUG(0,("gethostname failed\n"));
 964                 return False;
 965         }
 966
 967         /* Ensure null termination. */
 968         hostname[sizeof(hostname)-1] = '\0';
 969
 970         if (my_name) {
 971                 /* split off any parts after an initial . */
 972                 char *p = strchr_m(hostname,'.');
 973
 974                 if (p)
 975                         *p = 0;
 976
 977                 fstrcpy(my_name,hostname);
 978         }
 979
 980         return(True);
 981 }
 982
 983 /****************************************************************************
 984  Get my own name, including domain.
 985 ****************************************************************************/
 986
 987 BOOL get_myfullname(char *my_name)
 988 {
 989         pstring hostname;
 990
 991         *hostname = 0;
 992
 993         /* get my host name */
 994         if (gethostname(hostname, sizeof(hostname)) == -1) {
 995                 DEBUG(0,("gethostname failed\n"));
 996                 return False;
 997         }
 998
 999         /* Ensure null termination. */
1000         hostname[sizeof(hostname)-1] = '\0';
1001
1002         if (my_name)
1003                 fstrcpy(my_name, hostname);
1004         return True;
1005 }
1006
1007 /****************************************************************************
1008  Get my own domain name.
1009 ****************************************************************************/
1010
1011 BOOL get_mydomname(fstring my_domname)
1012 {
1013         pstring hostname;
1014         char *p;
1015
1016         *hostname = 0;
1017         /* get my host name */
1018         if (gethostname(hostname, sizeof(hostname)) == -1) {
1019                 DEBUG(0,("gethostname failed\n"));
1020                 return False;
1021         }
1022
1023         /* Ensure null termination. */
1024         hostname[sizeof(hostname)-1] = '\0';
1025
1026         p = strchr_m(hostname, '.');
1027
1028         if (!p)
1029                 return False;
1030
1031         p++;
1032
1033         if (my_domname)
1034                 fstrcpy(my_domname, p);
1035
1036         return True;
1037 }
1038
1039 /****************************************************************************
1040  Interpret a protocol description string, with a default.
1041 ****************************************************************************/
1042
1043 int interpret_protocol(char *str,int def)
1044 {
1045         if (strequal(str,"NT1"))
1046                 return(PROTOCOL_NT1);
1047         if (strequal(str,"LANMAN2"))
1048                 return(PROTOCOL_LANMAN2);
1049         if (strequal(str,"LANMAN1"))
1050                 return(PROTOCOL_LANMAN1);
1051         if (strequal(str,"CORE"))
1052                 return(PROTOCOL_CORE);
1053         if (strequal(str,"COREPLUS"))
1054                 return(PROTOCOL_COREPLUS);
1055         if (strequal(str,"CORE+"))
1056                 return(PROTOCOL_COREPLUS);
1057
1058         DEBUG(0,("Unrecognised protocol level %s\n",str));
1059
1060         return(def);
1061 }
1062
1063 /****************************************************************************
1064  Return true if a string could be a pure IP address.
1065 ****************************************************************************/
1066
1067 BOOL is_ipaddress(const char *str)
1068 {
1069         BOOL pure_address = True;
1070         int i;
1071
1072         for (i=0; pure_address && str[i]; i++)
1073                 if (!(isdigit((int)str[i]) || str[i] == '.'))
1074                         pure_address = False;
1075
1076         /* Check that a pure number is not misinterpreted as an IP */
1077         pure_address = pure_address && (strchr_m(str, '.') != NULL);
1078
1079         return pure_address;
1080 }
1081
1082 /****************************************************************************
1083  Interpret an internet address or name into an IP address in 4 byte form.
1084 ****************************************************************************/
1085
1086 uint32 interpret_addr(const char *str)
1087 {
1088         struct hostent *hp;
1089         uint32 res;
1090
1091         if (strcmp(str,"0.0.0.0") == 0)
1092                 return(0);
1093         if (strcmp(str,"255.255.255.255") == 0)
1094                 return(0xFFFFFFFF);
1095
1096   /* if it's in the form of an IP address then get the lib to interpret it */
1097         if (is_ipaddress(str)) {
1098                 res = inet_addr(str);
1099         } else {
1100                 /* otherwise assume it's a network name of some sort and use
1101                         sys_gethostbyname */
1102                 if ((hp = sys_gethostbyname(str)) == 0) {
1103                         DEBUG(3,("sys_gethostbyname: Unknown host. %s\n",str));
1104                         return 0;
1105                 }
1106
1107                 if(hp->h_addr == NULL) {
1108                         DEBUG(3,("sys_gethostbyname: host address is invalid for host %s\n",str));
1109                         return 0;
1110                 }
1111                 putip((char *)&res,(char *)hp->h_addr);
1112         }
1113
1114         if (res == (uint32)-1)
1115                 return(0);
1116
1117         return(res);
1118 }
1119
1120 /*******************************************************************
1121  A convenient addition to interpret_addr().
1122 ******************************************************************/
1123
1124 struct in_addr *interpret_addr2(const char *str)
1125 {
1126         static struct in_addr ret;
1127         uint32 a = interpret_addr(str);
1128         ret.s_addr = a;
1129         return(&ret);
1130 }
1131
1132 /*******************************************************************
1133  Check if an IP is the 0.0.0.0.
1134 ******************************************************************/
1135
1136 BOOL is_zero_ip(struct in_addr ip)
1137 {
1138         uint32 a;
1139         putip((char *)&a,(char *)&ip);
1140         return(a == 0);
1141 }
1142
1143 /*******************************************************************
1144  Set an IP to 0.0.0.0.
1145 ******************************************************************/
1146
1147 void zero_ip(struct in_addr *ip)
1148 {
1149         static BOOL init;
1150         static struct in_addr ipzero;
1151
1152         if (!init) {
1153                 ipzero = *interpret_addr2("0.0.0.0");
1154                 init = True;
1155         }
1156
1157         *ip = ipzero;
1158 }
1159
1160 #if (defined(HAVE_NETGROUP) && defined(WITH_AUTOMOUNT))
1161 /******************************************************************
1162  Remove any mount options such as -rsize=2048,wsize=2048 etc.
1163  Based on a fix from <Thomas.Hepper@icem.de>.
1164 *******************************************************************/
1165
1166 static void strip_mount_options( pstring *str)
1167 {
1168         if (**str == '-') {
1169                 char *p = *str;
1170                 while(*p && !isspace(*p))
1171                         p++;
1172                 while(*p && isspace(*p))
1173                         p++;
1174                 if(*p) {
1175                         pstring tmp_str;
1176
1177                         pstrcpy(tmp_str, p);
1178                         pstrcpy(*str, tmp_str);
1179                 }
1180         }
1181 }
1182
1183 /*******************************************************************
1184  Patch from jkf@soton.ac.uk
1185  Split Luke's automount_server into YP lookup and string splitter
1186  so can easily implement automount_path().
1187  As we may end up doing both, cache the last YP result.
1188 *******************************************************************/
1189
1190 #ifdef WITH_NISPLUS_HOME
1191 char *automount_lookup(const char *user_name)
1192 {
1193         static fstring last_key = "";
1194         static pstring last_value = "";
1195
1196         char *nis_map = (char *)lp_nis_home_map_name();
1197
1198         char buffer[NIS_MAXATTRVAL + 1];
1199         nis_result *result;
1200         nis_object *object;
1201         entry_obj  *entry;
1202
1203         if (strcmp(user_name, last_key)) {
1204                 slprintf(buffer, sizeof(buffer)-1, "[key=%s],%s", user_name, nis_map);
1205                 DEBUG(5, ("NIS+ querystring: %s\n", buffer));
1206
1207                 if (result = nis_list(buffer, FOLLOW_PATH|EXPAND_NAME|HARD_LOOKUP, NULL, NULL)) {
1208                         if (result->status != NIS_SUCCESS) {
1209                                 DEBUG(3, ("NIS+ query failed: %s\n", nis_sperrno(result->status)));
1210                                 fstrcpy(last_key, ""); pstrcpy(last_value, "");
1211                         } else {
1212                                 object = result->objects.objects_val;
1213                                 if (object->zo_data.zo_type == ENTRY_OBJ) {
1214                                         entry = &object->zo_data.objdata_u.en_data;
1215                                         DEBUG(5, ("NIS+ entry type: %s\n", entry->en_type));
1216                                         DEBUG(3, ("NIS+ result: %s\n", entry->en_cols.en_cols_val[1].ec_value.ec_value_val));
1217
1218                                         pstrcpy(last_value, entry->en_cols.en_cols_val[1].ec_value.ec_value_val);
1219                                         pstring_sub(last_value, "&", user_name);
1220                                         fstrcpy(last_key, user_name);
1221                                 }
1222                         }
1223                 }
1224                 nis_freeresult(result);
1225         }
1226
1227         strip_mount_options(&last_value);
1228
1229         DEBUG(4, ("NIS+ Lookup: %s resulted in %s\n", user_name, last_value));
1230         return last_value;
1231 }
1232 #else /* WITH_NISPLUS_HOME */
1233
1234 char *automount_lookup(const char *user_name)
1235 {
1236         static fstring last_key = "";
1237         static pstring last_value = "";
1238
1239         int nis_error;        /* returned by yp all functions */
1240         char *nis_result;     /* yp_match inits this */
1241         int nis_result_len;  /* and set this */
1242         char *nis_domain;     /* yp_get_default_domain inits this */
1243         char *nis_map = (char *)lp_nis_home_map_name();
1244
1245         if ((nis_error = yp_get_default_domain(&nis_domain)) != 0) {
1246                 DEBUG(3, ("YP Error: %s\n", yperr_string(nis_error)));
1247                 return last_value;
1248         }
1249
1250         DEBUG(5, ("NIS Domain: %s\n", nis_domain));
1251
1252         if (!strcmp(user_name, last_key)) {
1253                 nis_result = last_value;
1254                 nis_result_len = strlen(last_value);
1255                 nis_error = 0;
1256         } else {
1257                 if ((nis_error = yp_match(nis_domain, nis_map, user_name, strlen(user_name),
1258                                 &nis_result, &nis_result_len)) == 0) {
1259                         if (!nis_error && nis_result_len >= sizeof(pstring)) {
1260                                 nis_result_len = sizeof(pstring)-1;
1261                         }
1262                         fstrcpy(last_key, user_name);
1263                         strncpy(last_value, nis_result, nis_result_len);
1264                         last_value[nis_result_len] = '\0';
1265                         strip_mount_options(&last_value);
1266
1267                 } else if(nis_error == YPERR_KEY) {
1268
1269                         /* If Key lookup fails user home server is not in nis_map
1270                                 use default information for server, and home directory */
1271                         last_value[0] = 0;
1272                         DEBUG(3, ("YP Key not found:  while looking up \"%s\" in map \"%s\"\n",
1273                                         user_name, nis_map));
1274                         DEBUG(3, ("using defaults for server and home directory\n"));
1275                 } else {
1276                         DEBUG(3, ("YP Error: \"%s\" while looking up \"%s\" in map \"%s\"\n",
1277                                         yperr_string(nis_error), user_name, nis_map));
1278                 }
1279         }
1280
1281         DEBUG(4, ("YP Lookup: %s resulted in %s\n", user_name, last_value));
1282         return last_value;
1283 }
1284 #endif /* WITH_NISPLUS_HOME */
1285 #endif
1286
1287 /*******************************************************************
1288  Are two IPs on the same subnet?
1289 ********************************************************************/
1290
1291 BOOL same_net(struct in_addr ip1,struct in_addr ip2,struct in_addr mask)
1292 {
1293         uint32 net1,net2,nmask;
1294
1295         nmask = ntohl(mask.s_addr);
1296         net1  = ntohl(ip1.s_addr);
1297         net2  = ntohl(ip2.s_addr);
1298
1299         return((net1 & nmask) == (net2 & nmask));
1300 }
1301
1302
1303 /****************************************************************************
1304  Check if a process exists. Does this work on all unixes?
1305 ****************************************************************************/
1306
1307 BOOL process_exists(pid_t pid)
1308 {
1309         /* Doing kill with a non-positive pid causes messages to be
1310          * sent to places we don't want. */
1311         SMB_ASSERT(pid > 0);
1312         return(kill(pid,0) == 0 || errno != ESRCH);
1313 }
1314
1315 /*******************************************************************
1316  Convert a uid into a user name.
1317 ********************************************************************/
1318
1319 const char *uidtoname(uid_t uid)
1320 {
1321         static fstring name;
1322         struct passwd *pass;
1323
1324         pass = getpwuid_alloc(uid);
1325         if (pass) {
1326                 fstrcpy(name, pass->pw_name);
1327                 passwd_free(&pass);
1328         } else {
1329                 slprintf(name, sizeof(name) - 1, "%ld",(long int)uid);
1330         }
1331         return name;
1332 }
1333
1334
1335 /*******************************************************************
1336  Convert a gid into a group name.
1337 ********************************************************************/
1338
1339 char *gidtoname(gid_t gid)
1340 {
1341         static fstring name;
1342         struct group *grp;
1343
1344         grp = getgrgid(gid);
1345         if (grp)
1346                 return(grp->gr_name);
1347         slprintf(name,sizeof(name) - 1, "%d",(int)gid);
1348         return(name);
1349 }
1350
1351 /*******************************************************************
1352  Convert a user name into a uid.
1353 ********************************************************************/
1354
1355 uid_t nametouid(char *name)
1356 {
1357         struct passwd *pass;
1358         char *p;
1359         uid_t u;
1360
1361         pass = getpwnam_alloc(name);
1362         if (pass) {
1363                 u = pass->pw_uid;
1364                 passwd_free(&pass);
1365                 return u;
1366         }
1367
1368         u = (uid_t)strtol(name, &p, 0);
1369         if ((p != name) && (*p == '\0'))
1370                 return u;
1371
1372         return (uid_t)-1;
1373 }
1374
1375 /*******************************************************************
1376  Convert a name to a gid_t if possible. Return -1 if not a group.
1377 ********************************************************************/
1378
1379 gid_t nametogid(const char *name)
1380 {
1381         struct group *grp;
1382         char *p;
1383         gid_t g;
1384
1385         g = (gid_t)strtol(name, &p, 0);
1386         if ((p != name) && (*p == '\0'))
1387                 return g;
1388
1389         grp = sys_getgrnam(name);
1390         if (grp)
1391                 return(grp->gr_gid);
1392         return (gid_t)-1;
1393 }
1394
1395 /*******************************************************************
1396  Something really nasty happened - panic !
1397 ********************************************************************/
1398
1399 void smb_panic(const char *why)
1400 {
1401         char *cmd;
1402         int result;
1403
1404 #ifdef DEVELOPER
1405         {
1406                 extern char *global_clobber_region_function;
1407                 extern unsigned int global_clobber_region_line;
1408
1409                 if (global_clobber_region_function) {
1410                         DEBUG(0,("smb_panic: clobber_region() last called from [%s(%u)]\n",
1411                                  global_clobber_region_function,
1412                                  global_clobber_region_line));
1413                 }
1414         }
1415 #endif
1416
1417         cmd = lp_panic_action();
1418         if (cmd && *cmd) {
1419                 DEBUG(0, ("smb_panic(): calling panic action [%s]\n", cmd));
1420                 result = system(cmd);
1421
1422                 if (result == -1)
1423                         DEBUG(0, ("smb_panic(): fork failed in panic action: %s\n",
1424                                   strerror(errno)));
1425                 else
1426                         DEBUG(0, ("smb_panic(): action returned status %d\n",
1427                                   WEXITSTATUS(result)));
1428         }
1429         DEBUG(0,("PANIC: %s\n", why));
1430         dbgflush();
1431         abort();
1432 }
1433
1434 /*******************************************************************
1435  A readdir wrapper which just returns the file name.
1436 ********************************************************************/
1437
1438 const char *readdirname(DIR *p)
1439 {
1440         SMB_STRUCT_DIRENT *ptr;
1441         char *dname;
1442
1443         if (!p)
1444                 return(NULL);
1445
1446         ptr = (SMB_STRUCT_DIRENT *)sys_readdir(p);
1447         if (!ptr)
1448                 return(NULL);
1449
1450         dname = ptr->d_name;
1451
1452 #ifdef NEXT2
1453         if (telldir(p) < 0)
1454                 return(NULL);
1455 #endif
1456
1457 #ifdef HAVE_BROKEN_READDIR
1458         /* using /usr/ucb/cc is BAD */
1459         dname = dname - 2;
1460 #endif
1461
1462         {
1463                 static pstring buf;
1464                 int len = NAMLEN(ptr);
1465                 memcpy(buf, dname, len);
1466                 buf[len] = 0;
1467                 dname = buf;
1468         }
1469
1470         return(dname);
1471 }
1472
1473 /*******************************************************************
1474  Utility function used to decide if the last component
1475  of a path matches a (possibly wildcarded) entry in a namelist.
1476 ********************************************************************/
1477
1478 BOOL is_in_path(const char *name, name_compare_entry *namelist)
1479 {
1480         pstring last_component;
1481         char *p;
1482
1483         DEBUG(8, ("is_in_path: %s\n", name));
1484
1485         /* if we have no list it's obviously not in the path */
1486         if((namelist == NULL ) || ((namelist != NULL) && (namelist[0].name == NULL))) {
1487                 DEBUG(8,("is_in_path: no name list.\n"));
1488                 return False;
1489         }
1490
1491         /* Get the last component of the unix name. */
1492         p = strrchr_m(name, '/');
1493         strncpy(last_component, p ? ++p : name, sizeof(last_component)-1);
1494         last_component[sizeof(last_component)-1] = '\0';
1495
1496         for(; namelist->name != NULL; namelist++) {
1497                 if(namelist->is_wild) {
1498                         if (mask_match(last_component, namelist->name, case_sensitive)) {
1499                                 DEBUG(8,("is_in_path: mask match succeeded\n"));
1500                                 return True;
1501                         }
1502                 } else {
1503                         if((case_sensitive && (strcmp(last_component, namelist->name) == 0))||
1504                                                 (!case_sensitive && (StrCaseCmp(last_component, namelist->name) == 0))) {
1505                                 DEBUG(8,("is_in_path: match succeeded\n"));
1506                                 return True;
1507                         }
1508                 }
1509         }
1510         DEBUG(8,("is_in_path: match not found\n"));
1511
1512         return False;
1513 }
1514
1515 /*******************************************************************
1516  Strip a '/' separated list into an array of
1517  name_compare_enties structures suitable for
1518  passing to is_in_path(). We do this for
1519  speed so we can pre-parse all the names in the list
1520  and don't do it for each call to is_in_path().
1521  namelist is modified here and is assumed to be
1522  a copy owned by the caller.
1523  We also check if the entry contains a wildcard to
1524  remove a potentially expensive call to mask_match
1525  if possible.
1526 ********************************************************************/
1527
1528 void set_namearray(name_compare_entry **ppname_array, char *namelist)
1529 {
1530         char *name_end;
1531         char *nameptr = namelist;
1532         int num_entries = 0;
1533         int i;
1534
1535         (*ppname_array) = NULL;
1536
1537         if((nameptr == NULL ) || ((nameptr != NULL) && (*nameptr == '\0')))
1538                 return;
1539
1540         /* We need to make two passes over the string. The
1541                 first to count the number of elements, the second
1542                 to split it.
1543         */
1544
1545         while(*nameptr) {
1546                 if ( *nameptr == '/' ) {
1547                         /* cope with multiple (useless) /s) */
1548                         nameptr++;
1549                         continue;
1550                 }
1551                 /* find the next / */
1552                 name_end = strchr_m(nameptr, '/');
1553
1554                 /* oops - the last check for a / didn't find one. */
1555                 if (name_end == NULL)
1556                         break;
1557
1558                 /* next segment please */
1559                 nameptr = name_end + 1;
1560                 num_entries++;
1561         }
1562
1563         if(num_entries == 0)
1564                 return;
1565
1566         if(( (*ppname_array) = (name_compare_entry *)malloc(
1567                                         (num_entries + 1) * sizeof(name_compare_entry))) == NULL) {
1568                 DEBUG(0,("set_namearray: malloc fail\n"));
1569                 return;
1570         }
1571
1572         /* Now copy out the names */
1573         nameptr = namelist;
1574         i = 0;
1575         while(*nameptr) {
1576                 if ( *nameptr == '/' ) {
1577                         /* cope with multiple (useless) /s) */
1578                         nameptr++;
1579                         continue;
1580                 }
1581                 /* find the next / */
1582                 if ((name_end = strchr_m(nameptr, '/')) != NULL)
1583                         *name_end = 0;
1584
1585                 /* oops - the last check for a / didn't find one. */
1586                 if(name_end == NULL)
1587                         break;
1588
1589                 (*ppname_array)[i].is_wild = ms_has_wild(nameptr);
1590                 if(((*ppname_array)[i].name = strdup(nameptr)) == NULL) {
1591                         DEBUG(0,("set_namearray: malloc fail (1)\n"));
1592                         return;
1593                 }
1594
1595                 /* next segment please */
1596                 nameptr = name_end + 1;
1597                 i++;
1598         }
1599
1600         (*ppname_array)[i].name = NULL;
1601
1602         return;
1603 }
1604
1605 /****************************************************************************
1606  Routine to free a namearray.
1607 ****************************************************************************/
1608
1609 void free_namearray(name_compare_entry *name_array)
1610 {
1611         int i;
1612
1613         if(name_array == NULL)
1614                 return;
1615
1616         for(i=0; name_array[i].name!=NULL; i++)
1617                 SAFE_FREE(name_array[i].name);
1618         SAFE_FREE(name_array);
1619 }
1620
1621 /****************************************************************************
1622  Simple routine to do POSIX file locking. Cruft in NFS and 64->32 bit mapping
1623  is dealt with in posix.c
1624 ****************************************************************************/
1625
1626 BOOL fcntl_lock(int fd, int op, SMB_OFF_T offset, SMB_OFF_T count, int type)
1627 {
1628         SMB_STRUCT_FLOCK lock;
1629         int ret;
1630
1631         DEBUG(8,("fcntl_lock %d %d %.0f %.0f %d\n",fd,op,(double)offset,(double)count,type));
1632
1633         lock.l_type = type;
1634         lock.l_whence = SEEK_SET;
1635         lock.l_start = offset;
1636         lock.l_len = count;
1637         lock.l_pid = 0;
1638
1639         ret = sys_fcntl_ptr(fd,op,&lock);
1640
1641         if (ret == -1 && errno != 0)
1642                 DEBUG(3,("fcntl_lock: fcntl lock gave errno %d (%s)\n",errno,strerror(errno)));
1643
1644         /* a lock query */
1645         if (op == SMB_F_GETLK) {
1646                 if ((ret != -1) &&
1647                                 (lock.l_type != F_UNLCK) &&
1648                                 (lock.l_pid != 0) &&
1649                                 (lock.l_pid != sys_getpid())) {
1650                         DEBUG(3,("fcntl_lock: fd %d is locked by pid %d\n",fd,(int)lock.l_pid));
1651                         return(True);
1652                 }
1653
1654                 /* it must be not locked or locked by me */
1655                 return(False);
1656         }
1657
1658         /* a lock set or unset */
1659         if (ret == -1) {
1660                 DEBUG(3,("fcntl_lock: lock failed at offset %.0f count %.0f op %d type %d (%s)\n",
1661                         (double)offset,(double)count,op,type,strerror(errno)));
1662                 return(False);
1663         }
1664
1665         /* everything went OK */
1666         DEBUG(8,("fcntl_lock: Lock call successful\n"));
1667
1668         return(True);
1669 }
1670
1671 /*******************************************************************
1672  Is the name specified one of my netbios names.
1673  Returns true if it is equal, false otherwise.
1674 ********************************************************************/
1675
1676 BOOL is_myname(const char *s)
1677 {
1678         int n;
1679         BOOL ret = False;
1680
1681         for (n=0; my_netbios_names(n); n++) {
1682                 if (strequal(my_netbios_names(n), s)) {
1683                         ret=True;
1684                         break;
1685                 }
1686         }
1687         DEBUG(8, ("is_myname(\"%s\") returns %d\n", s, ret));
1688         return(ret);
1689 }
1690
1691 /********************************************************************
1692  Return only the first IP address of our configured interfaces
1693  as a string
1694  *******************************************************************/
1695
1696 const char* get_my_primary_ip (void)
1697 {
1698         static fstring ip_string;
1699         int n;
1700         struct iface_struct nics[MAX_INTERFACES];
1701
1702         if ((n=get_interfaces(nics, MAX_INTERFACES)) <= 0)
1703                 return NULL;
1704
1705         fstrcpy(ip_string, inet_ntoa(nics[0].ip));
1706         return ip_string;
1707 }
1708
1709 BOOL is_myname_or_ipaddr(const char *s)
1710 {
1711         /* optimize for the common case */
1712         if (strequal(s, global_myname()))
1713                 return True;
1714
1715         /* maybe its an IP address? */
1716         if (is_ipaddress(s)) {
1717                 struct iface_struct nics[MAX_INTERFACES];
1718                 int i, n;
1719                 uint32 ip;
1720
1721                 ip = interpret_addr(s);
1722                 if ((ip==0) || (ip==0xffffffff))
1723                         return False;
1724
1725                 n = get_interfaces(nics, MAX_INTERFACES);
1726                 for (i=0; i<n; i++) {
1727                         if (ip == nics[i].ip.s_addr)
1728                                 return True;
1729                 }
1730         }
1731
1732         /* check for an alias */
1733         if (is_myname(s))
1734                 return True;
1735
1736         /* no match */
1737         return False;
1738 }
1739
1740 /*******************************************************************
1741  Is the name specified our workgroup/domain.
1742  Returns true if it is equal, false otherwise.
1743 ********************************************************************/
1744
1745 BOOL is_myworkgroup(const char *s)
1746 {
1747         BOOL ret = False;
1748
1749         if (strequal(s, lp_workgroup())) {
1750                 ret=True;
1751         }
1752
1753         DEBUG(8, ("is_myworkgroup(\"%s\") returns %d\n", s, ret));
1754         return(ret);
1755 }
1756
1757 /*******************************************************************
1758  we distinguish between 2K and XP by the "Native Lan Manager" string
1759    WinXP => "Windows 2002 5.1"
1760    Win2k => "Windows 2000 5.0"
1761    NT4   => "Windows NT 4.0"
1762    Win9x => "Windows 4.0"
1763 ********************************************************************/
1764
1765 void ra_lanman_string( const char *native_lanman )
1766 {
1767         if ( 0 == strcmp( native_lanman, "Windows 2002 5.1" ) )
1768                 set_remote_arch( RA_WINXP );
1769         else if ( 0 == strcmp( native_lanman, "Windows .NET 5.2" ) )
1770                 set_remote_arch( RA_WIN2K3 );
1771 }
1772
1773 /*******************************************************************
1774  Set the horrid remote_arch string based on an enum.
1775 ********************************************************************/
1776
1777 void set_remote_arch(enum remote_arch_types type)
1778 {
1779         extern fstring remote_arch;
1780         ra_type = type;
1781         switch( type ) {
1782         case RA_WFWG:
1783                 fstrcpy(remote_arch, "WfWg");
1784                 return;
1785         case RA_OS2:
1786                 fstrcpy(remote_arch, "OS2");
1787                 return;
1788         case RA_WIN95:
1789                 fstrcpy(remote_arch, "Win95");
1790                 return;
1791         case RA_WINNT:
1792                 fstrcpy(remote_arch, "WinNT");
1793                 return;
1794         case RA_WIN2K:
1795                 fstrcpy(remote_arch, "Win2K");
1796                 return;
1797         case RA_WINXP:
1798                 fstrcpy(remote_arch, "WinXP");
1799                 return;
1800         case RA_WIN2K3:
1801                 fstrcpy(remote_arch, "Win2K3");
1802                 return;
1803         case RA_SAMBA:
1804                 fstrcpy(remote_arch,"Samba");
1805                 return;
1806         default:
1807                 ra_type = RA_UNKNOWN;
1808                 fstrcpy(remote_arch, "UNKNOWN");
1809                 break;
1810         }
1811 }
1812
1813 /*******************************************************************
1814  Get the remote_arch type.
1815 ********************************************************************/
1816
1817 enum remote_arch_types get_remote_arch(void)
1818 {
1819         return ra_type;
1820 }
1821
1822
1823 void out_ascii(FILE *f, unsigned char *buf,int len)
1824 {
1825         int i;
1826         for (i=0;i<len;i++)
1827                 fprintf(f, "%c", isprint(buf[i])?buf[i]:'.');
1828 }
1829
1830 void out_data(FILE *f,char *buf1,int len, int per_line)
1831 {
1832         unsigned char *buf = (unsigned char *)buf1;
1833         int i=0;
1834         if (len<=0) {
1835                 return;
1836         }
1837
1838         fprintf(f, "[%03X] ",i);
1839         for (i=0;i<len;) {
1840                 fprintf(f, "%02X ",(int)buf[i]);
1841                 i++;
1842                 if (i%(per_line/2) == 0) fprintf(f, " ");
1843                 if (i%per_line == 0) {
1844                         out_ascii(f,&buf[i-per_line  ],per_line/2); fprintf(f, " ");
1845                         out_ascii(f,&buf[i-per_line/2],per_line/2); fprintf(f, "\n");
1846                         if (i<len) fprintf(f, "[%03X] ",i);
1847                 }
1848         }
1849         if ((i%per_line) != 0) {
1850                 int n;
1851
1852                 n = per_line - (i%per_line);
1853                 fprintf(f, " ");
1854                 if (n>(per_line/2)) fprintf(f, " ");
1855                 while (n--) {
1856                         fprintf(f, "   ");
1857                 }
1858                 n = MIN(per_line/2,i%per_line);
1859                 out_ascii(f,&buf[i-(i%per_line)],n); fprintf(f, " ");
1860                 n = (i%per_line) - n;
1861                 if (n>0) out_ascii(f,&buf[i-n],n);
1862                 fprintf(f, "\n");
1863         }
1864 }
1865
1866 void print_asc(int level, const unsigned char *buf,int len)
1867 {
1868         int i;
1869         for (i=0;i<len;i++)
1870                 DEBUG(level,("%c", isprint(buf[i])?buf[i]:'.'));
1871 }
1872
1873 void dump_data(int level, const char *buf1,int len)
1874 {
1875         const unsigned char *buf = (const unsigned char *)buf1;
1876         int i=0;
1877         if (len<=0) return;
1878
1879         if (!DEBUGLVL(level)) return;
1880
1881         DEBUGADD(level,("[%03X] ",i));
1882         for (i=0;i<len;) {
1883                 DEBUGADD(level,("%02X ",(int)buf[i]));
1884                 i++;
1885                 if (i%8 == 0) DEBUGADD(level,(" "));
1886                 if (i%16 == 0) {
1887                         print_asc(level,&buf[i-16],8); DEBUGADD(level,(" "));
1888                         print_asc(level,&buf[i-8],8); DEBUGADD(level,("\n"));
1889                         if (i<len) DEBUGADD(level,("[%03X] ",i));
1890                 }
1891         }
1892         if (i%16) {
1893                 int n;
1894                 n = 16 - (i%16);
1895                 DEBUGADD(level,(" "));
1896                 if (n>8) DEBUGADD(level,(" "));
1897                 while (n--) DEBUGADD(level,("   "));
1898                 n = MIN(8,i%16);
1899                 print_asc(level,&buf[i-(i%16)],n); DEBUGADD(level,( " " ));
1900                 n = (i%16) - n;
1901                 if (n>0) print_asc(level,&buf[i-n],n);
1902                 DEBUGADD(level,("\n"));
1903         }
1904 }
1905
1906 char *tab_depth(int depth)
1907 {
1908         static pstring spaces;
1909         memset(spaces, ' ', depth * 4);
1910         spaces[depth * 4] = 0;
1911         return spaces;
1912 }
1913
1914 /*****************************************************************************
1915  Provide a checksum on a string
1916
1917  Input:  s - the null-terminated character string for which the checksum
1918              will be calculated.
1919
1920   Output: The checksum value calculated for s.
1921 *****************************************************************************/
1922
1923 int str_checksum(const char *s)
1924 {
1925         int res = 0;
1926         int c;
1927         int i=0;
1928
1929         while(*s) {
1930                 c = *s;
1931                 res ^= (c << (i % 15)) ^ (c >> (15-(i%15)));
1932                 s++;
1933                 i++;
1934         }
1935         return(res);
1936 }
1937
1938 /*****************************************************************
1939  Zero a memory area then free it. Used to catch bugs faster.
1940 *****************************************************************/
1941
1942 void zero_free(void *p, size_t size)
1943 {
1944         memset(p, 0, size);
1945         SAFE_FREE(p);
1946 }
1947
1948 /*****************************************************************
1949  Set our open file limit to a requested max and return the limit.
1950 *****************************************************************/
1951
1952 int set_maxfiles(int requested_max)
1953 {
1954 #if (defined(HAVE_GETRLIMIT) && defined(RLIMIT_NOFILE))
1955         struct rlimit rlp;
1956         int saved_current_limit;
1957
1958         if(getrlimit(RLIMIT_NOFILE, &rlp)) {
1959                 DEBUG(0,("set_maxfiles: getrlimit (1) for RLIMIT_NOFILE failed with error %s\n",
1960                         strerror(errno) ));
1961                 /* just guess... */
1962                 return requested_max;
1963         }
1964
1965         /*
1966          * Set the fd limit to be real_max_open_files + MAX_OPEN_FUDGEFACTOR to
1967          * account for the extra fd we need
1968          * as well as the log files and standard
1969          * handles etc. Save the limit we want to set in case
1970          * we are running on an OS that doesn't support this limit (AIX)
1971          * which always returns RLIM_INFINITY for rlp.rlim_max.
1972          */
1973
1974         /* Try raising the hard (max) limit to the requested amount. */
1975
1976 #if defined(RLIM_INFINITY)
1977         if (rlp.rlim_max != RLIM_INFINITY) {
1978                 int orig_max = rlp.rlim_max;
1979
1980                 if ( rlp.rlim_max < requested_max )
1981                         rlp.rlim_max = requested_max;
1982
1983                 /* This failing is not an error - many systems (Linux) don't
1984                         support our default request of 10,000 open files. JRA. */
1985
1986                 if(setrlimit(RLIMIT_NOFILE, &rlp)) {
1987                         DEBUG(3,("set_maxfiles: setrlimit for RLIMIT_NOFILE for %d max files failed with error %s\n",
1988                                 (int)rlp.rlim_max, strerror(errno) ));
1989
1990                         /* Set failed - restore original value from get. */
1991                         rlp.rlim_max = orig_max;
1992                 }
1993         }
1994 #endif
1995
1996         /* Now try setting the soft (current) limit. */
1997
1998         saved_current_limit = rlp.rlim_cur = MIN(requested_max,rlp.rlim_max);
1999
2000         if(setrlimit(RLIMIT_NOFILE, &rlp)) {
2001                 DEBUG(0,("set_maxfiles: setrlimit for RLIMIT_NOFILE for %d files failed with error %s\n",
2002                         (int)rlp.rlim_cur, strerror(errno) ));
2003                 /* just guess... */
2004                 return saved_current_limit;
2005         }
2006
2007         if(getrlimit(RLIMIT_NOFILE, &rlp)) {
2008                 DEBUG(0,("set_maxfiles: getrlimit (2) for RLIMIT_NOFILE failed with error %s\n",
2009                         strerror(errno) ));
2010                 /* just guess... */
2011                 return saved_current_limit;
2012     }
2013
2014 #if defined(RLIM_INFINITY)
2015         if(rlp.rlim_cur == RLIM_INFINITY)
2016                 return saved_current_limit;
2017 #endif
2018
2019         if((int)rlp.rlim_cur > saved_current_limit)
2020                 return saved_current_limit;
2021
2022         return rlp.rlim_cur;
2023 #else /* !defined(HAVE_GETRLIMIT) || !defined(RLIMIT_NOFILE) */
2024         /*
2025          * No way to know - just guess...
2026          */
2027         return requested_max;
2028 #endif
2029 }
2030
2031 /*****************************************************************
2032  Splits out the start of the key (HKLM or HKU) and the rest of the key.
2033 *****************************************************************/
2034
2035 BOOL reg_split_key(const char *full_keyname, uint32 *reg_type, char *key_name)
2036 {
2037         pstring tmp;
2038
2039         if (!next_token(&full_keyname, tmp, "\\", sizeof(tmp)))
2040                 return False;
2041
2042         (*reg_type) = 0;
2043
2044         DEBUG(10, ("reg_split_key: hive %s\n", tmp));
2045
2046         if (strequal(tmp, "HKLM") || strequal(tmp, "HKEY_LOCAL_MACHINE"))
2047                 (*reg_type) = HKEY_LOCAL_MACHINE;
2048         else if (strequal(tmp, "HKU") || strequal(tmp, "HKEY_USERS"))
2049                 (*reg_type) = HKEY_USERS;
2050         else {
2051                 DEBUG(10,("reg_split_key: unrecognised hive key %s\n", tmp));
2052                 return False;
2053         }
2054
2055         if (next_token(&full_keyname, tmp, "\n\r", sizeof(tmp)))
2056                 fstrcpy(key_name, tmp);
2057         else
2058                 key_name[0] = 0;
2059
2060         DEBUG(10, ("reg_split_key: name %s\n", key_name));
2061
2062         return True;
2063 }
2064
2065 /*****************************************************************
2066  Possibly replace mkstemp if it is broken.
2067 *****************************************************************/
2068
2069 int smb_mkstemp(char *template)
2070 {
2071 #if HAVE_SECURE_MKSTEMP
2072         return mkstemp(template);
2073 #else
2074         /* have a reasonable go at emulating it. Hope that
2075            the system mktemp() isn't completly hopeless */
2076         char *p = mktemp(template);
2077         if (!p)
2078                 return -1;
2079         return open(p, O_CREAT|O_EXCL|O_RDWR, 0600);
2080 #endif
2081 }
2082
2083 /*****************************************************************
2084  malloc that aborts with smb_panic on fail or zero size.
2085  *****************************************************************/
2086
2087 void *smb_xmalloc(size_t size)
2088 {
2089         void *p;
2090         if (size == 0)
2091                 smb_panic("smb_xmalloc: called with zero size.\n");
2092         if ((p = malloc(size)) == NULL) {
2093                 DEBUG(0, ("smb_xmalloc() failed to allocate %lu bytes\n", (unsigned long)size));
2094                 smb_panic("smb_xmalloc: malloc fail.\n");
2095         }
2096         return p;
2097 }
2098
2099 /**
2100  Memdup with smb_panic on fail.
2101 **/
2102
2103 void *smb_xmemdup(const void *p, size_t size)
2104 {
2105         void *p2;
2106         p2 = smb_xmalloc(size);
2107         memcpy(p2, p, size);
2108         return p2;
2109 }
2110
2111 /**
2112  strdup that aborts on malloc fail.
2113 **/
2114
2115 char *smb_xstrdup(const char *s)
2116 {
2117         char *s1 = strdup(s);
2118         if (!s1)
2119                 smb_panic("smb_xstrdup: malloc fail\n");
2120         return s1;
2121 }
2122
2123 /**
2124  strndup that aborts on malloc fail.
2125 **/
2126
2127 char *smb_xstrndup(const char *s, size_t n)
2128 {
2129         char *s1 = strndup(s, n);
2130         if (!s1)
2131                 smb_panic("smb_xstrndup: malloc fail\n");
2132         return s1;
2133 }
2134
2135 /*
2136   vasprintf that aborts on malloc fail
2137 */
2138
2139  int smb_xvasprintf(char **ptr, const char *format, va_list ap)
2140 {
2141         int n;
2142         va_list ap2;
2143
2144         VA_COPY(ap2, ap);
2145
2146         n = vasprintf(ptr, format, ap2);
2147         if (n == -1 || ! *ptr)
2148                 smb_panic("smb_xvasprintf: out of memory");
2149         return n;
2150 }
2151
2152 /*****************************************************************
2153  Like strdup but for memory.
2154 *****************************************************************/
2155
2156 void *memdup(const void *p, size_t size)
2157 {
2158         void *p2;
2159         if (size == 0)
2160                 return NULL;
2161         p2 = malloc(size);
2162         if (!p2)
2163                 return NULL;
2164         memcpy(p2, p, size);
2165         return p2;
2166 }
2167
2168 /*****************************************************************
2169  Get local hostname and cache result.
2170 *****************************************************************/
2171
2172 char *myhostname(void)
2173 {
2174         static pstring ret;
2175         if (ret[0] == 0)
2176                 get_myname(ret);
2177         return ret;
2178 }
2179
2180 /*****************************************************************
2181  A useful function for returning a path in the Samba lock directory.
2182 *****************************************************************/
2183
2184 char *lock_path(const char *name)
2185 {
2186         static pstring fname;
2187
2188         pstrcpy(fname,lp_lockdir());
2189         trim_string(fname,"","/");
2190
2191         if (!directory_exist(fname,NULL))
2192                 mkdir(fname,0755);
2193
2194         pstrcat(fname,"/");
2195         pstrcat(fname,name);
2196
2197         return fname;
2198 }
2199
2200 /*****************************************************************
2201  A useful function for returning a path in the Samba pid directory.
2202 *****************************************************************/
2203
2204 char *pid_path(const char *name)
2205 {
2206         static pstring fname;
2207
2208         pstrcpy(fname,lp_piddir());
2209         trim_string(fname,"","/");
2210
2211         if (!directory_exist(fname,NULL))
2212                 mkdir(fname,0755);
2213
2214         pstrcat(fname,"/");
2215         pstrcat(fname,name);
2216
2217         return fname;
2218 }
2219
2220 /**
2221  * @brief Returns an absolute path to a file in the Samba lib directory.
2222  *
2223  * @param name File to find, relative to LIBDIR.
2224  *
2225  * @retval Pointer to a static #pstring containing the full path.
2226  **/
2227
2228 char *lib_path(const char *name)
2229 {
2230         static pstring fname;
2231         snprintf(fname, sizeof(fname), "%s/%s", dyn_LIBDIR, name);
2232         return fname;
2233 }
2234
2235 /**
2236  * @brief Returns the platform specific shared library extension.
2237  *
2238  * @retval Pointer to a static #fstring containing the extension.
2239  **/
2240
2241 const char *shlib_ext(void)
2242 {
2243   return dyn_SHLIBEXT;
2244 }
2245
2246 /*******************************************************************
2247  Given a filename - get its directory name
2248  NB: Returned in static storage.  Caveats:
2249  o  Not safe in thread environment.
2250  o  Caller must not free.
2251  o  If caller wishes to preserve, they should copy.
2252 ********************************************************************/
2253
2254 char *parent_dirname(const char *path)
2255 {
2256         static pstring dirpath;
2257         char *p;
2258
2259         if (!path)
2260                 return(NULL);
2261
2262         pstrcpy(dirpath, path);
2263         p = strrchr_m(dirpath, '/');  /* Find final '/', if any */
2264         if (!p) {
2265                 pstrcpy(dirpath, ".");    /* No final "/", so dir is "." */
2266         } else {
2267                 if (p == dirpath)
2268                         ++p;    /* For root "/", leave "/" in place */
2269                 *p = '\0';
2270         }
2271         return dirpath;
2272 }
2273
2274
2275 /*******************************************************************
2276  Determine if a pattern contains any Microsoft wildcard characters.
2277 *******************************************************************/
2278
2279 BOOL ms_has_wild(char *s)
2280 {
2281         char c;
2282         while ((c = *s++)) {
2283                 switch (c) {
2284                 case '*':
2285                 case '?':
2286                 case '<':
2287                 case '>':
2288                 case '"':
2289                         return True;
2290                 }
2291         }
2292         return False;
2293 }
2294
2295 BOOL ms_has_wild_w(const smb_ucs2_t *s)
2296 {
2297         smb_ucs2_t c;
2298         if (!s) return False;
2299         while ((c = *s++)) {
2300                 switch (c) {
2301                 case UCS2_CHAR('*'):
2302                 case UCS2_CHAR('?'):
2303                 case UCS2_CHAR('<'):
2304                 case UCS2_CHAR('>'):
2305                 case UCS2_CHAR('"'):
2306                         return True;
2307                 }
2308         }
2309         return False;
2310 }
2311
2312 /*******************************************************************
2313  A wrapper that handles case sensitivity and the special handling
2314  of the ".." name.
2315 *******************************************************************/
2316
2317 BOOL mask_match(const char *string, char *pattern, BOOL is_case_sensitive)
2318 {
2319         fstring p2, s2;
2320
2321         if (strcmp(string,"..") == 0)
2322                 string = ".";
2323         if (strcmp(pattern,".") == 0)
2324                 return False;
2325
2326         if (is_case_sensitive)
2327                 return ms_fnmatch(pattern, string, Protocol) == 0;
2328
2329         fstrcpy(p2, pattern);
2330         fstrcpy(s2, string);
2331         strlower(p2);
2332         strlower(s2);
2333         return ms_fnmatch(p2, s2, Protocol) == 0;
2334 }
2335
2336 /*********************************************************
2337  Recursive routine that is called by unix_wild_match.
2338 *********************************************************/
2339
2340 static BOOL unix_do_match(char *regexp, char *str)
2341 {
2342         char *p;
2343
2344         for( p = regexp; *p && *str; ) {
2345
2346                 switch(*p) {
2347                         case '?':
2348                                 str++;
2349                                 p++;
2350                                 break;
2351
2352                         case '*':
2353
2354                                 /*
2355                                  * Look for a character matching
2356                                  * the one after the '*'.
2357                                  */
2358                                 p++;
2359                                 if(!*p)
2360                                         return True; /* Automatic match */
2361                                 while(*str) {
2362
2363                                         while(*str && (*p != *str))
2364                                                 str++;
2365
2366                                         /*
2367                                          * Patch from weidel@multichart.de. In the case of the regexp
2368                                          * '*XX*' we want to ensure there are at least 2 'X' characters
2369                                          * in the string after the '*' for a match to be made.
2370                                          */
2371
2372                                         {
2373                                                 int matchcount=0;
2374
2375                                                 /*
2376                                                  * Eat all the characters that match, but count how many there were.
2377                                                  */
2378
2379                                                 while(*str && (*p == *str)) {
2380                                                         str++;
2381                                                         matchcount++;
2382                                                 }
2383
2384                                                 /*
2385                                                  * Now check that if the regexp had n identical characters that
2386                                                  * matchcount had at least that many matches.
2387                                                  */
2388
2389                                                 while ( *(p+1) && (*(p+1) == *p)) {
2390                                                         p++;
2391                                                         matchcount--;
2392                                                 }
2393
2394                                                 if ( matchcount <= 0 )
2395                                                         return False;
2396                                         }
2397
2398                                         str--; /* We've eaten the match char after the '*' */
2399
2400                                         if(unix_do_match(p, str))
2401                                                 return True;
2402
2403                                         if(!*str)
2404                                                 return False;
2405                                         else
2406                                                 str++;
2407                                 }
2408                                 return False;
2409
2410                         default:
2411                                 if(*str != *p)
2412                                         return False;
2413                                 str++;
2414                                 p++;
2415                                 break;
2416                 }
2417         }
2418
2419         if(!*p && !*str)
2420                 return True;
2421
2422         if (!*p && str[0] == '.' && str[1] == 0)
2423                 return(True);
2424
2425         if (!*str && *p == '?') {
2426                 while (*p == '?')
2427                         p++;
2428                 return(!*p);
2429         }
2430
2431         if(!*str && (*p == '*' && p[1] == '\0'))
2432                 return True;
2433
2434         return False;
2435 }
2436
2437 /*******************************************************************
2438  Simple case insensitive interface to a UNIX wildcard matcher.
2439 *******************************************************************/
2440
2441 BOOL unix_wild_match(const char *pattern, const char *string)
2442 {
2443         pstring p2, s2;
2444         char *p;
2445
2446         pstrcpy(p2, pattern);
2447         pstrcpy(s2, string);
2448         strlower(p2);
2449         strlower(s2);
2450
2451         /* Remove any *? and ** from the pattern as they are meaningless */
2452         for(p = p2; *p; p++)
2453                 while( *p == '*' && (p[1] == '?' ||p[1] == '*'))
2454                         pstrcpy( &p[1], &p[2]);
2455
2456         if (strequal(p2,"*"))
2457                 return True;
2458
2459         return unix_do_match(p2, s2) == 0;
2460 }
2461
2462 #ifdef __INSURE__
2463
2464 /*******************************************************************
2465 This routine is a trick to immediately catch errors when debugging
2466 with insure. A xterm with a gdb is popped up when insure catches
2467 a error. It is Linux specific.
2468 ********************************************************************/
2469
2470 int _Insure_trap_error(int a1, int a2, int a3, int a4, int a5, int a6)
2471 {
2472         static int (*fn)();
2473         int ret;
2474         char pidstr[10];
2475         /* you can get /usr/bin/backtrace from
2476            http://samba.org/ftp/unpacked/junkcode/backtrace */
2477         pstring cmd = "/usr/bin/backtrace %d";
2478
2479         slprintf(pidstr, sizeof(pidstr)-1, "%d", sys_getpid());
2480         pstring_sub(cmd, "%d", pidstr);
2481
2482         if (!fn) {
2483                 static void *h;
2484                 h = dlopen("/usr/local/parasoft/insure++lite/lib.linux2/libinsure.so", RTLD_LAZY);
2485                 fn = dlsym(h, "_Insure_trap_error");
2486
2487                 if (!h || h == _Insure_trap_error) {
2488                         h = dlopen("/usr/local/parasoft/lib.linux2/libinsure.so", RTLD_LAZY);
2489                         fn = dlsym(h, "_Insure_trap_error");
2490                 }
2491         }
2492
2493         ret = fn(a1, a2, a3, a4, a5, a6);
2494
2495         system(cmd);
2496
2497         return ret;
2498 }
2499 #endif