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 = lp_panic_action();
1402         int result;
1403
1404         if (cmd && *cmd) {
1405                 DEBUG(0, ("smb_panic(): calling panic action [%s]\n", cmd));
1406                 result = system(cmd);
1407
1408                 if (result == -1)
1409                         DEBUG(0, ("smb_panic(): fork failed in panic action: %s\n",
1410                                   strerror(errno)));
1411                 else
1412                         DEBUG(0, ("smb_panic(): action returned status %d\n",
1413                                   WEXITSTATUS(result)));
1414         }
1415         DEBUG(0,("PANIC: %s\n", why));
1416         dbgflush();
1417         abort();
1418 }
1419
1420 /*******************************************************************
1421  A readdir wrapper which just returns the file name.
1422 ********************************************************************/
1423
1424 char *readdirname(DIR *p)
1425 {
1426         SMB_STRUCT_DIRENT *ptr;
1427         char *dname;
1428
1429         if (!p)
1430                 return(NULL);
1431
1432         ptr = (SMB_STRUCT_DIRENT *)sys_readdir(p);
1433         if (!ptr)
1434                 return(NULL);
1435
1436         dname = ptr->d_name;
1437
1438 #ifdef NEXT2
1439         if (telldir(p) < 0)
1440                 return(NULL);
1441 #endif
1442
1443 #ifdef HAVE_BROKEN_READDIR
1444         /* using /usr/ucb/cc is BAD */
1445         dname = dname - 2;
1446 #endif
1447
1448         {
1449                 static pstring buf;
1450                 int len = NAMLEN(ptr);
1451                 memcpy(buf, dname, len);
1452                 buf[len] = 0;
1453                 dname = buf;
1454         }
1455
1456         return(dname);
1457 }
1458
1459 /*******************************************************************
1460  Utility function used to decide if the last component
1461  of a path matches a (possibly wildcarded) entry in a namelist.
1462 ********************************************************************/
1463
1464 BOOL is_in_path(const char *name, name_compare_entry *namelist)
1465 {
1466         pstring last_component;
1467         char *p;
1468
1469         DEBUG(8, ("is_in_path: %s\n", name));
1470
1471         /* if we have no list it's obviously not in the path */
1472         if((namelist == NULL ) || ((namelist != NULL) && (namelist[0].name == NULL))) {
1473                 DEBUG(8,("is_in_path: no name list.\n"));
1474                 return False;
1475         }
1476
1477         /* Get the last component of the unix name. */
1478         p = strrchr_m(name, '/');
1479         strncpy(last_component, p ? ++p : name, sizeof(last_component)-1);
1480         last_component[sizeof(last_component)-1] = '\0';
1481
1482         for(; namelist->name != NULL; namelist++) {
1483                 if(namelist->is_wild) {
1484                         if (mask_match(last_component, namelist->name, case_sensitive)) {
1485                                 DEBUG(8,("is_in_path: mask match succeeded\n"));
1486                                 return True;
1487                         }
1488                 } else {
1489                         if((case_sensitive && (strcmp(last_component, namelist->name) == 0))||
1490                                                 (!case_sensitive && (StrCaseCmp(last_component, namelist->name) == 0))) {
1491                                 DEBUG(8,("is_in_path: match succeeded\n"));
1492                                 return True;
1493                         }
1494                 }
1495         }
1496         DEBUG(8,("is_in_path: match not found\n"));
1497
1498         return False;
1499 }
1500
1501 /*******************************************************************
1502  Strip a '/' separated list into an array of
1503  name_compare_enties structures suitable for
1504  passing to is_in_path(). We do this for
1505  speed so we can pre-parse all the names in the list
1506  and don't do it for each call to is_in_path().
1507  namelist is modified here and is assumed to be
1508  a copy owned by the caller.
1509  We also check if the entry contains a wildcard to
1510  remove a potentially expensive call to mask_match
1511  if possible.
1512 ********************************************************************/
1513
1514 void set_namearray(name_compare_entry **ppname_array, char *namelist)
1515 {
1516         char *name_end;
1517         char *nameptr = namelist;
1518         int num_entries = 0;
1519         int i;
1520
1521         (*ppname_array) = NULL;
1522
1523         if((nameptr == NULL ) || ((nameptr != NULL) && (*nameptr == '\0')))
1524                 return;
1525
1526         /* We need to make two passes over the string. The
1527                 first to count the number of elements, the second
1528                 to split it.
1529         */
1530
1531         while(*nameptr) {
1532                 if ( *nameptr == '/' ) {
1533                         /* cope with multiple (useless) /s) */
1534                         nameptr++;
1535                         continue;
1536                 }
1537                 /* find the next / */
1538                 name_end = strchr_m(nameptr, '/');
1539
1540                 /* oops - the last check for a / didn't find one. */
1541                 if (name_end == NULL)
1542                         break;
1543
1544                 /* next segment please */
1545                 nameptr = name_end + 1;
1546                 num_entries++;
1547         }
1548
1549         if(num_entries == 0)
1550                 return;
1551
1552         if(( (*ppname_array) = (name_compare_entry *)malloc(
1553                                         (num_entries + 1) * sizeof(name_compare_entry))) == NULL) {
1554                 DEBUG(0,("set_namearray: malloc fail\n"));
1555                 return;
1556         }
1557
1558         /* Now copy out the names */
1559         nameptr = namelist;
1560         i = 0;
1561         while(*nameptr) {
1562                 if ( *nameptr == '/' ) {
1563                         /* cope with multiple (useless) /s) */
1564                         nameptr++;
1565                         continue;
1566                 }
1567                 /* find the next / */
1568                 if ((name_end = strchr_m(nameptr, '/')) != NULL)
1569                         *name_end = 0;
1570
1571                 /* oops - the last check for a / didn't find one. */
1572                 if(name_end == NULL)
1573                         break;
1574
1575                 (*ppname_array)[i].is_wild = ms_has_wild(nameptr);
1576                 if(((*ppname_array)[i].name = strdup(nameptr)) == NULL) {
1577                         DEBUG(0,("set_namearray: malloc fail (1)\n"));
1578                         return;
1579                 }
1580
1581                 /* next segment please */
1582                 nameptr = name_end + 1;
1583                 i++;
1584         }
1585
1586         (*ppname_array)[i].name = NULL;
1587
1588         return;
1589 }
1590
1591 /****************************************************************************
1592  Routine to free a namearray.
1593 ****************************************************************************/
1594
1595 void free_namearray(name_compare_entry *name_array)
1596 {
1597         int i;
1598
1599         if(name_array == NULL)
1600                 return;
1601
1602         for(i=0; name_array[i].name!=NULL; i++)
1603                 SAFE_FREE(name_array[i].name);
1604         SAFE_FREE(name_array);
1605 }
1606
1607 /****************************************************************************
1608  Simple routine to do POSIX file locking. Cruft in NFS and 64->32 bit mapping
1609  is dealt with in posix.c
1610 ****************************************************************************/
1611
1612 BOOL fcntl_lock(int fd, int op, SMB_OFF_T offset, SMB_OFF_T count, int type)
1613 {
1614         SMB_STRUCT_FLOCK lock;
1615         int ret;
1616
1617         DEBUG(8,("fcntl_lock %d %d %.0f %.0f %d\n",fd,op,(double)offset,(double)count,type));
1618
1619         lock.l_type = type;
1620         lock.l_whence = SEEK_SET;
1621         lock.l_start = offset;
1622         lock.l_len = count;
1623         lock.l_pid = 0;
1624
1625         ret = sys_fcntl_ptr(fd,op,&lock);
1626
1627         if (ret == -1 && errno != 0)
1628                 DEBUG(3,("fcntl_lock: fcntl lock gave errno %d (%s)\n",errno,strerror(errno)));
1629
1630         /* a lock query */
1631         if (op == SMB_F_GETLK) {
1632                 if ((ret != -1) &&
1633                                 (lock.l_type != F_UNLCK) &&
1634                                 (lock.l_pid != 0) &&
1635                                 (lock.l_pid != sys_getpid())) {
1636                         DEBUG(3,("fcntl_lock: fd %d is locked by pid %d\n",fd,(int)lock.l_pid));
1637                         return(True);
1638                 }
1639
1640                 /* it must be not locked or locked by me */
1641                 return(False);
1642         }
1643
1644         /* a lock set or unset */
1645         if (ret == -1) {
1646                 DEBUG(3,("fcntl_lock: lock failed at offset %.0f count %.0f op %d type %d (%s)\n",
1647                         (double)offset,(double)count,op,type,strerror(errno)));
1648                 return(False);
1649         }
1650
1651         /* everything went OK */
1652         DEBUG(8,("fcntl_lock: Lock call successful\n"));
1653
1654         return(True);
1655 }
1656
1657 /*******************************************************************
1658  Is the name specified one of my netbios names.
1659  Returns true if it is equal, false otherwise.
1660 ********************************************************************/
1661
1662 BOOL is_myname(const char *s)
1663 {
1664         int n;
1665         BOOL ret = False;
1666
1667         for (n=0; my_netbios_names(n); n++) {
1668                 if (strequal(my_netbios_names(n), s)) {
1669                         ret=True;
1670                         break;
1671                 }
1672         }
1673         DEBUG(8, ("is_myname(\"%s\") returns %d\n", s, ret));
1674         return(ret);
1675 }
1676
1677 /********************************************************************
1678  Return only the first IP address of our configured interfaces
1679  as a string
1680  *******************************************************************/
1681
1682 const char* get_my_primary_ip (void)
1683 {
1684         static fstring ip_string;
1685         int n;
1686         struct iface_struct nics[MAX_INTERFACES];
1687
1688         if ((n=get_interfaces(nics, MAX_INTERFACES)) <= 0)
1689                 return NULL;
1690
1691         fstrcpy(ip_string, inet_ntoa(nics[0].ip));
1692         return ip_string;
1693 }
1694
1695 BOOL is_myname_or_ipaddr(const char *s)
1696 {
1697         /* optimize for the common case */
1698         if (strequal(s, global_myname()))
1699                 return True;
1700
1701         /* maybe its an IP address? */
1702         if (is_ipaddress(s)) {
1703                 struct iface_struct nics[MAX_INTERFACES];
1704                 int i, n;
1705                 uint32 ip;
1706
1707                 ip = interpret_addr(s);
1708                 if ((ip==0) || (ip==0xffffffff))
1709                         return False;
1710
1711                 n = get_interfaces(nics, MAX_INTERFACES);
1712                 for (i=0; i<n; i++) {
1713                         if (ip == nics[i].ip.s_addr)
1714                                 return True;
1715                 }
1716         }
1717
1718         /* check for an alias */
1719         if (is_myname(s))
1720                 return True;
1721
1722         /* no match */
1723         return False;
1724 }
1725
1726 /*******************************************************************
1727  Is the name specified our workgroup/domain.
1728  Returns true if it is equal, false otherwise.
1729 ********************************************************************/
1730
1731 BOOL is_myworkgroup(const char *s)
1732 {
1733         BOOL ret = False;
1734
1735         if (strequal(s, lp_workgroup())) {
1736                 ret=True;
1737         }
1738
1739         DEBUG(8, ("is_myworkgroup(\"%s\") returns %d\n", s, ret));
1740         return(ret);
1741 }
1742
1743 /*******************************************************************
1744  Set the horrid remote_arch string based on an enum.
1745 ********************************************************************/
1746
1747 void set_remote_arch(enum remote_arch_types type)
1748 {
1749         extern fstring remote_arch;
1750         ra_type = type;
1751         switch( type ) {
1752         case RA_WFWG:
1753                 fstrcpy(remote_arch, "WfWg");
1754                 return;
1755         case RA_OS2:
1756                 fstrcpy(remote_arch, "OS2");
1757                 return;
1758         case RA_WIN95:
1759                 fstrcpy(remote_arch, "Win95");
1760                 return;
1761         case RA_WINNT:
1762                 fstrcpy(remote_arch, "WinNT");
1763                 return;
1764         case RA_WIN2K:
1765                 fstrcpy(remote_arch, "Win2K");
1766                 return;
1767         case RA_WINXP:
1768                 fstrcpy(remote_arch, "WinXP");
1769                 return;
1770         case RA_WIN2K3:
1771                 fstrcpy(remote_arch, "Win2K3");
1772                 return;
1773         case RA_SAMBA:
1774                 fstrcpy(remote_arch,"Samba");
1775                 return;
1776         default:
1777                 ra_type = RA_UNKNOWN;
1778                 fstrcpy(remote_arch, "UNKNOWN");
1779                 break;
1780         }
1781 }
1782
1783 /*******************************************************************
1784  Get the remote_arch type.
1785 ********************************************************************/
1786
1787 enum remote_arch_types get_remote_arch(void)
1788 {
1789         return ra_type;
1790 }
1791
1792
1793 void out_ascii(FILE *f, unsigned char *buf,int len)
1794 {
1795         int i;
1796         for (i=0;i<len;i++)
1797                 fprintf(f, "%c", isprint(buf[i])?buf[i]:'.');
1798 }
1799
1800 void out_data(FILE *f,char *buf1,int len, int per_line)
1801 {
1802         unsigned char *buf = (unsigned char *)buf1;
1803         int i=0;
1804         if (len<=0) {
1805                 return;
1806         }
1807
1808         fprintf(f, "[%03X] ",i);
1809         for (i=0;i<len;) {
1810                 fprintf(f, "%02X ",(int)buf[i]);
1811                 i++;
1812                 if (i%(per_line/2) == 0) fprintf(f, " ");
1813                 if (i%per_line == 0) {
1814                         out_ascii(f,&buf[i-per_line  ],per_line/2); fprintf(f, " ");
1815                         out_ascii(f,&buf[i-per_line/2],per_line/2); fprintf(f, "\n");
1816                         if (i<len) fprintf(f, "[%03X] ",i);
1817                 }
1818         }
1819         if ((i%per_line) != 0) {
1820                 int n;
1821
1822                 n = per_line - (i%per_line);
1823                 fprintf(f, " ");
1824                 if (n>(per_line/2)) fprintf(f, " ");
1825                 while (n--) {
1826                         fprintf(f, "   ");
1827                 }
1828                 n = MIN(per_line/2,i%per_line);
1829                 out_ascii(f,&buf[i-(i%per_line)],n); fprintf(f, " ");
1830                 n = (i%per_line) - n;
1831                 if (n>0) out_ascii(f,&buf[i-n],n);
1832                 fprintf(f, "\n");
1833         }
1834 }
1835
1836 void print_asc(int level, const unsigned char *buf,int len)
1837 {
1838         int i;
1839         for (i=0;i<len;i++)
1840                 DEBUG(level,("%c", isprint(buf[i])?buf[i]:'.'));
1841 }
1842
1843 void dump_data(int level, const char *buf1,int len)
1844 {
1845         const unsigned char *buf = (const unsigned char *)buf1;
1846         int i=0;
1847         if (len<=0) return;
1848
1849         if (!DEBUGLVL(level)) return;
1850
1851         DEBUGADD(level,("[%03X] ",i));
1852         for (i=0;i<len;) {
1853                 DEBUGADD(level,("%02X ",(int)buf[i]));
1854                 i++;
1855                 if (i%8 == 0) DEBUGADD(level,(" "));
1856                 if (i%16 == 0) {
1857                         print_asc(level,&buf[i-16],8); DEBUGADD(level,(" "));
1858                         print_asc(level,&buf[i-8],8); DEBUGADD(level,("\n"));
1859                         if (i<len) DEBUGADD(level,("[%03X] ",i));
1860                 }
1861         }
1862         if (i%16) {
1863                 int n;
1864                 n = 16 - (i%16);
1865                 DEBUGADD(level,(" "));
1866                 if (n>8) DEBUGADD(level,(" "));
1867                 while (n--) DEBUGADD(level,("   "));
1868                 n = MIN(8,i%16);
1869                 print_asc(level,&buf[i-(i%16)],n); DEBUGADD(level,( " " ));
1870                 n = (i%16) - n;
1871                 if (n>0) print_asc(level,&buf[i-n],n);
1872                 DEBUGADD(level,("\n"));
1873         }
1874 }
1875
1876 char *tab_depth(int depth)
1877 {
1878         static pstring spaces;
1879         memset(spaces, ' ', depth * 4);
1880         spaces[depth * 4] = 0;
1881         return spaces;
1882 }
1883
1884 /*****************************************************************************
1885  Provide a checksum on a string
1886
1887  Input:  s - the null-terminated character string for which the checksum
1888              will be calculated.
1889
1890   Output: The checksum value calculated for s.
1891 *****************************************************************************/
1892
1893 int str_checksum(const char *s)
1894 {
1895         int res = 0;
1896         int c;
1897         int i=0;
1898
1899         while(*s) {
1900                 c = *s;
1901                 res ^= (c << (i % 15)) ^ (c >> (15-(i%15)));
1902                 s++;
1903                 i++;
1904         }
1905         return(res);
1906 }
1907
1908 /*****************************************************************
1909  Zero a memory area then free it. Used to catch bugs faster.
1910 *****************************************************************/
1911
1912 void zero_free(void *p, size_t size)
1913 {
1914         memset(p, 0, size);
1915         SAFE_FREE(p);
1916 }
1917
1918 /*****************************************************************
1919  Set our open file limit to a requested max and return the limit.
1920 *****************************************************************/
1921
1922 int set_maxfiles(int requested_max)
1923 {
1924 #if (defined(HAVE_GETRLIMIT) && defined(RLIMIT_NOFILE))
1925         struct rlimit rlp;
1926         int saved_current_limit;
1927
1928         if(getrlimit(RLIMIT_NOFILE, &rlp)) {
1929                 DEBUG(0,("set_maxfiles: getrlimit (1) for RLIMIT_NOFILE failed with error %s\n",
1930                         strerror(errno) ));
1931                 /* just guess... */
1932                 return requested_max;
1933         }
1934
1935         /*
1936          * Set the fd limit to be real_max_open_files + MAX_OPEN_FUDGEFACTOR to
1937          * account for the extra fd we need
1938          * as well as the log files and standard
1939          * handles etc. Save the limit we want to set in case
1940          * we are running on an OS that doesn't support this limit (AIX)
1941          * which always returns RLIM_INFINITY for rlp.rlim_max.
1942          */
1943
1944         /* Try raising the hard (max) limit to the requested amount. */
1945
1946 #if defined(RLIM_INFINITY)
1947         if (rlp.rlim_max != RLIM_INFINITY) {
1948                 int orig_max = rlp.rlim_max;
1949
1950                 if ( rlp.rlim_max < requested_max )
1951                         rlp.rlim_max = requested_max;
1952
1953                 /* This failing is not an error - many systems (Linux) don't
1954                         support our default request of 10,000 open files. JRA. */
1955
1956                 if(setrlimit(RLIMIT_NOFILE, &rlp)) {
1957                         DEBUG(3,("set_maxfiles: setrlimit for RLIMIT_NOFILE for %d max files failed with error %s\n",
1958                                 (int)rlp.rlim_max, strerror(errno) ));
1959
1960                         /* Set failed - restore original value from get. */
1961                         rlp.rlim_max = orig_max;
1962                 }
1963         }
1964 #endif
1965
1966         /* Now try setting the soft (current) limit. */
1967
1968         saved_current_limit = rlp.rlim_cur = MIN(requested_max,rlp.rlim_max);
1969
1970         if(setrlimit(RLIMIT_NOFILE, &rlp)) {
1971                 DEBUG(0,("set_maxfiles: setrlimit for RLIMIT_NOFILE for %d files failed with error %s\n",
1972                         (int)rlp.rlim_cur, strerror(errno) ));
1973                 /* just guess... */
1974                 return saved_current_limit;
1975         }
1976
1977         if(getrlimit(RLIMIT_NOFILE, &rlp)) {
1978                 DEBUG(0,("set_maxfiles: getrlimit (2) for RLIMIT_NOFILE failed with error %s\n",
1979                         strerror(errno) ));
1980                 /* just guess... */
1981                 return saved_current_limit;
1982     }
1983
1984 #if defined(RLIM_INFINITY)
1985         if(rlp.rlim_cur == RLIM_INFINITY)
1986                 return saved_current_limit;
1987 #endif
1988
1989         if((int)rlp.rlim_cur > saved_current_limit)
1990                 return saved_current_limit;
1991
1992         return rlp.rlim_cur;
1993 #else /* !defined(HAVE_GETRLIMIT) || !defined(RLIMIT_NOFILE) */
1994         /*
1995          * No way to know - just guess...
1996          */
1997         return requested_max;
1998 #endif
1999 }
2000
2001 /*****************************************************************
2002  Splits out the start of the key (HKLM or HKU) and the rest of the key.
2003 *****************************************************************/
2004
2005 BOOL reg_split_key(const char *full_keyname, uint32 *reg_type, char *key_name)
2006 {
2007         pstring tmp;
2008
2009         if (!next_token(&full_keyname, tmp, "\\", sizeof(tmp)))
2010                 return False;
2011
2012         (*reg_type) = 0;
2013
2014         DEBUG(10, ("reg_split_key: hive %s\n", tmp));
2015
2016         if (strequal(tmp, "HKLM") || strequal(tmp, "HKEY_LOCAL_MACHINE"))
2017                 (*reg_type) = HKEY_LOCAL_MACHINE;
2018         else if (strequal(tmp, "HKU") || strequal(tmp, "HKEY_USERS"))
2019                 (*reg_type) = HKEY_USERS;
2020         else {
2021                 DEBUG(10,("reg_split_key: unrecognised hive key %s\n", tmp));
2022                 return False;
2023         }
2024
2025         if (next_token(&full_keyname, tmp, "\n\r", sizeof(tmp)))
2026                 fstrcpy(key_name, tmp);
2027         else
2028                 key_name[0] = 0;
2029
2030         DEBUG(10, ("reg_split_key: name %s\n", key_name));
2031
2032         return True;
2033 }
2034
2035 /*****************************************************************
2036  Possibly replace mkstemp if it is broken.
2037 *****************************************************************/
2038
2039 int smb_mkstemp(char *template)
2040 {
2041 #if HAVE_SECURE_MKSTEMP
2042         return mkstemp(template);
2043 #else
2044         /* have a reasonable go at emulating it. Hope that
2045            the system mktemp() isn't completly hopeless */
2046         char *p = mktemp(template);
2047         if (!p)
2048                 return -1;
2049         return open(p, O_CREAT|O_EXCL|O_RDWR, 0600);
2050 #endif
2051 }
2052
2053 /*****************************************************************
2054  malloc that aborts with smb_panic on fail or zero size.
2055  *****************************************************************/
2056
2057 void *smb_xmalloc(size_t size)
2058 {
2059         void *p;
2060         if (size == 0)
2061                 smb_panic("smb_xmalloc: called with zero size.\n");
2062         if ((p = malloc(size)) == NULL)
2063                 smb_panic("smb_xmalloc: malloc fail.\n");
2064         return p;
2065 }
2066
2067 /**
2068  Memdup with smb_panic on fail.
2069 **/
2070
2071 void *smb_xmemdup(const void *p, size_t size)
2072 {
2073         void *p2;
2074         p2 = smb_xmalloc(size);
2075         memcpy(p2, p, size);
2076         return p2;
2077 }
2078
2079 /**
2080  strdup that aborts on malloc fail.
2081 **/
2082
2083 char *smb_xstrdup(const char *s)
2084 {
2085         char *s1 = strdup(s);
2086         if (!s1)
2087                 smb_panic("smb_xstrdup: malloc fail\n");
2088         return s1;
2089 }
2090
2091 /**
2092  strndup that aborts on malloc fail.
2093 **/
2094
2095 char *smb_xstrndup(const char *s, size_t n)
2096 {
2097         char *s1 = strndup(s, n);
2098         if (!s1)
2099                 smb_panic("smb_xstrndup: malloc fail\n");
2100         return s1;
2101 }
2102
2103 /*
2104   vasprintf that aborts on malloc fail
2105 */
2106
2107  int smb_xvasprintf(char **ptr, const char *format, va_list ap)
2108 {
2109         int n;
2110         va_list ap2;
2111
2112         VA_COPY(ap2, ap);
2113
2114         n = vasprintf(ptr, format, ap2);
2115         if (n == -1 || ! *ptr)
2116                 smb_panic("smb_xvasprintf: out of memory");
2117         return n;
2118 }
2119
2120 /*****************************************************************
2121  Like strdup but for memory.
2122 *****************************************************************/
2123
2124 void *memdup(const void *p, size_t size)
2125 {
2126         void *p2;
2127         if (size == 0)
2128                 return NULL;
2129         p2 = malloc(size);
2130         if (!p2)
2131                 return NULL;
2132         memcpy(p2, p, size);
2133         return p2;
2134 }
2135
2136 /*****************************************************************
2137  Get local hostname and cache result.
2138 *****************************************************************/
2139
2140 char *myhostname(void)
2141 {
2142         static pstring ret;
2143         if (ret[0] == 0)
2144                 get_myname(ret);
2145         return ret;
2146 }
2147
2148 /*****************************************************************
2149  A useful function for returning a path in the Samba lock directory.
2150 *****************************************************************/
2151
2152 char *lock_path(const char *name)
2153 {
2154         static pstring fname;
2155
2156         pstrcpy(fname,lp_lockdir());
2157         trim_string(fname,"","/");
2158
2159         if (!directory_exist(fname,NULL))
2160                 mkdir(fname,0755);
2161
2162         pstrcat(fname,"/");
2163         pstrcat(fname,name);
2164
2165         return fname;
2166 }
2167
2168 /*****************************************************************
2169  A useful function for returning a path in the Samba pid directory.
2170 *****************************************************************/
2171
2172 char *pid_path(const char *name)
2173 {
2174         static pstring fname;
2175
2176         pstrcpy(fname,lp_piddir());
2177         trim_string(fname,"","/");
2178
2179         if (!directory_exist(fname,NULL))
2180                 mkdir(fname,0755);
2181
2182         pstrcat(fname,"/");
2183         pstrcat(fname,name);
2184
2185         return fname;
2186 }
2187
2188 /**
2189  * @brief Returns an absolute path to a file in the Samba lib directory.
2190  *
2191  * @param name File to find, relative to LIBDIR.
2192  *
2193  * @retval Pointer to a static #pstring containing the full path.
2194  **/
2195
2196 char *lib_path(const char *name)
2197 {
2198         static pstring fname;
2199         snprintf(fname, sizeof(fname), "%s/%s", dyn_LIBDIR, name);
2200         return fname;
2201 }
2202
2203 /**
2204  * @brief Returns the platform specific shared library extension.
2205  *
2206  * @retval Pointer to a static #fstring containing the extension.
2207  **/
2208
2209 const char *shlib_ext(void)
2210 {
2211   return dyn_SHLIBEXT;
2212 }
2213
2214 /*******************************************************************
2215  Given a filename - get its directory name
2216  NB: Returned in static storage.  Caveats:
2217  o  Not safe in thread environment.
2218  o  Caller must not free.
2219  o  If caller wishes to preserve, they should copy.
2220 ********************************************************************/
2221
2222 char *parent_dirname(const char *path)
2223 {
2224         static pstring dirpath;
2225         char *p;
2226
2227         if (!path)
2228                 return(NULL);
2229
2230         pstrcpy(dirpath, path);
2231         p = strrchr_m(dirpath, '/');  /* Find final '/', if any */
2232         if (!p) {
2233                 pstrcpy(dirpath, ".");    /* No final "/", so dir is "." */
2234         } else {
2235                 if (p == dirpath)
2236                         ++p;    /* For root "/", leave "/" in place */
2237                 *p = '\0';
2238         }
2239         return dirpath;
2240 }
2241
2242
2243 /*******************************************************************
2244  Determine if a pattern contains any Microsoft wildcard characters.
2245 *******************************************************************/
2246
2247 BOOL ms_has_wild(char *s)
2248 {
2249         char c;
2250         while ((c = *s++)) {
2251                 switch (c) {
2252                 case '*':
2253                 case '?':
2254                 case '<':
2255                 case '>':
2256                 case '"':
2257                         return True;
2258                 }
2259         }
2260         return False;
2261 }
2262
2263 BOOL ms_has_wild_w(const smb_ucs2_t *s)
2264 {
2265         smb_ucs2_t c;
2266         if (!s) return False;
2267         while ((c = *s++)) {
2268                 switch (c) {
2269                 case UCS2_CHAR('*'):
2270                 case UCS2_CHAR('?'):
2271                 case UCS2_CHAR('<'):
2272                 case UCS2_CHAR('>'):
2273                 case UCS2_CHAR('"'):
2274                         return True;
2275                 }
2276         }
2277         return False;
2278 }
2279
2280 /*******************************************************************
2281  A wrapper that handles case sensitivity and the special handling
2282  of the ".." name.
2283 *******************************************************************/
2284
2285 BOOL mask_match(const char *string, char *pattern, BOOL is_case_sensitive)
2286 {
2287         fstring p2, s2;
2288
2289         if (strcmp(string,"..") == 0)
2290                 string = ".";
2291         if (strcmp(pattern,".") == 0)
2292                 return False;
2293
2294         if (is_case_sensitive)
2295                 return ms_fnmatch(pattern, string, Protocol) == 0;
2296
2297         fstrcpy(p2, pattern);
2298         fstrcpy(s2, string);
2299         strlower(p2);
2300         strlower(s2);
2301         return ms_fnmatch(p2, s2, Protocol) == 0;
2302 }
2303
2304 /*********************************************************
2305  Recursive routine that is called by unix_wild_match.
2306 *********************************************************/
2307
2308 static BOOL unix_do_match(char *regexp, char *str)
2309 {
2310         char *p;
2311
2312         for( p = regexp; *p && *str; ) {
2313
2314                 switch(*p) {
2315                         case '?':
2316                                 str++;
2317                                 p++;
2318                                 break;
2319
2320                         case '*':
2321
2322                                 /*
2323                                  * Look for a character matching
2324                                  * the one after the '*'.
2325                                  */
2326                                 p++;
2327                                 if(!*p)
2328                                         return True; /* Automatic match */
2329                                 while(*str) {
2330
2331                                         while(*str && (*p != *str))
2332                                                 str++;
2333
2334                                         /*
2335                                          * Patch from weidel@multichart.de. In the case of the regexp
2336                                          * '*XX*' we want to ensure there are at least 2 'X' characters
2337                                          * in the string after the '*' for a match to be made.
2338                                          */
2339
2340                                         {
2341                                                 int matchcount=0;
2342
2343                                                 /*
2344                                                  * Eat all the characters that match, but count how many there were.
2345                                                  */
2346
2347                                                 while(*str && (*p == *str)) {
2348                                                         str++;
2349                                                         matchcount++;
2350                                                 }
2351
2352                                                 /*
2353                                                  * Now check that if the regexp had n identical characters that
2354                                                  * matchcount had at least that many matches.
2355                                                  */
2356
2357                                                 while ( *(p+1) && (*(p+1) == *p)) {
2358                                                         p++;
2359                                                         matchcount--;
2360                                                 }
2361
2362                                                 if ( matchcount <= 0 )
2363                                                         return False;
2364                                         }
2365
2366                                         str--; /* We've eaten the match char after the '*' */
2367
2368                                         if(unix_do_match(p, str))
2369                                                 return True;
2370
2371                                         if(!*str)
2372                                                 return False;
2373                                         else
2374                                                 str++;
2375                                 }
2376                                 return False;
2377
2378                         default:
2379                                 if(*str != *p)
2380                                         return False;
2381                                 str++;
2382                                 p++;
2383                                 break;
2384                 }
2385         }
2386
2387         if(!*p && !*str)
2388                 return True;
2389
2390         if (!*p && str[0] == '.' && str[1] == 0)
2391                 return(True);
2392
2393         if (!*str && *p == '?') {
2394                 while (*p == '?')
2395                         p++;
2396                 return(!*p);
2397         }
2398
2399         if(!*str && (*p == '*' && p[1] == '\0'))
2400                 return True;
2401
2402         return False;
2403 }
2404
2405 /*******************************************************************
2406  Simple case insensitive interface to a UNIX wildcard matcher.
2407 *******************************************************************/
2408
2409 BOOL unix_wild_match(const char *pattern, const char *string)
2410 {
2411         pstring p2, s2;
2412         char *p;
2413
2414         pstrcpy(p2, pattern);
2415         pstrcpy(s2, string);
2416         strlower(p2);
2417         strlower(s2);
2418
2419         /* Remove any *? and ** from the pattern as they are meaningless */
2420         for(p = p2; *p; p++)
2421                 while( *p == '*' && (p[1] == '?' ||p[1] == '*'))
2422                         pstrcpy( &p[1], &p[2]);
2423
2424         if (strequal(p2,"*"))
2425                 return True;
2426
2427         return unix_do_match(p2, s2) == 0;
2428 }
2429
2430 #ifdef __INSURE__
2431
2432 /*******************************************************************
2433 This routine is a trick to immediately catch errors when debugging
2434 with insure. A xterm with a gdb is popped up when insure catches
2435 a error. It is Linux specific.
2436 ********************************************************************/
2437
2438 int _Insure_trap_error(int a1, int a2, int a3, int a4, int a5, int a6)
2439 {
2440         static int (*fn)();
2441         int ret;
2442         char pidstr[10];
2443         /* you can get /usr/bin/backtrace from
2444            http://samba.org/ftp/unpacked/junkcode/backtrace */
2445         pstring cmd = "/usr/bin/backtrace %d";
2446
2447         slprintf(pidstr, sizeof(pidstr)-1, "%d", sys_getpid());
2448         pstring_sub(cmd, "%d", pidstr);
2449
2450         if (!fn) {
2451                 static void *h;
2452                 h = dlopen("/usr/local/parasoft/insure++lite/lib.linux2/libinsure.so", RTLD_LAZY);
2453                 fn = dlsym(h, "_Insure_trap_error");
2454
2455                 if (!h || h == _Insure_trap_error) {
2456                         h = dlopen("/usr/local/parasoft/lib.linux2/libinsure.so", RTLD_LAZY);
2457                         fn = dlsym(h, "_Insure_trap_error");
2458                 }
2459         }
2460
2461         ret = fn(a1, a2, a3, a4, a5, a6);
2462
2463         system(cmd);
2464
2465         return ret;
2466 }
2467 #endif