source3/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) Jim McDonough <jmcd@us.ibm.com> 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_m(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_m(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_m(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_m(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_char( local_machine, ' ', ' ' );
 265         p = strchr( local_machine, ' ' );
 266         if (p)
 267                 *p = 0;
 268         strlower_m( 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((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  Make a dir struct.
 610 ****************************************************************************/
 611
 612 void make_dir_struct(char *buf, const char *mask, const char *fname,SMB_OFF_T size,int mode,time_t date)
 613 {
 614         char *p;
 615         pstring mask2;
 616
 617         pstrcpy(mask2,mask);
 618
 619         if ((mode & aDIR) != 0)
 620                 size = 0;
 621
 622         memset(buf+1,' ',11);
 623         if ((p = strchr_m(mask2,'.')) != NULL) {
 624                 *p = 0;
 625                 push_ascii(buf+1,mask2,8, 0);
 626                 push_ascii(buf+9,p+1,3, 0);
 627                 *p = '.';
 628         } else
 629                 push_ascii(buf+1,mask2,11, 0);
 630
 631         memset(buf+21,'\0',DIR_STRUCT_SIZE-21);
 632         SCVAL(buf,21,mode);
 633         put_dos_date(buf,22,date);
 634         SSVAL(buf,26,size & 0xFFFF);
 635         SSVAL(buf,28,(size >> 16)&0xFFFF);
 636         push_ascii(buf+30,fname,12, case_sensitive ? 0 : STR_UPPER);
 637         DEBUG(8,("put name [%s] from [%s] into dir struct\n",buf+30, fname));
 638 }
 639
 640 /*******************************************************************
 641  Close the low 3 fd's and open dev/null in their place.
 642 ********************************************************************/
 643
 644 void close_low_fds(BOOL stderr_too)
 645 {
 646 #ifndef VALGRIND
 647         int fd;
 648         int i;
 649
 650         close(0);
 651         close(1);
 652
 653         if (stderr_too)
 654                 close(2);
 655
 656         /* try and use up these file descriptors, so silly
 657                 library routines writing to stdout etc won't cause havoc */
 658         for (i=0;i<3;i++) {
 659                 if (i == 2 && !stderr_too)
 660                         continue;
 661
 662                 fd = sys_open("/dev/null",O_RDWR,0);
 663                 if (fd < 0)
 664                         fd = sys_open("/dev/null",O_WRONLY,0);
 665                 if (fd < 0) {
 666                         DEBUG(0,("Can't open /dev/null\n"));
 667                         return;
 668                 }
 669                 if (fd != i) {
 670                         DEBUG(0,("Didn't get file descriptor %d\n",i));
 671                         return;
 672                 }
 673         }
 674 #endif
 675 }
 676
 677 /****************************************************************************
 678  Set a fd into blocking/nonblocking mode. Uses POSIX O_NONBLOCK if available,
 679  else
 680   if SYSV use O_NDELAY
 681   if BSD use FNDELAY
 682 ****************************************************************************/
 683
 684 int set_blocking(int fd, BOOL set)
 685 {
 686         int val;
 687 #ifdef O_NONBLOCK
 688 #define FLAG_TO_SET O_NONBLOCK
 689 #else
 690 #ifdef SYSV
 691 #define FLAG_TO_SET O_NDELAY
 692 #else /* BSD */
 693 #define FLAG_TO_SET FNDELAY
 694 #endif
 695 #endif
 696
 697         if((val = sys_fcntl_long(fd, F_GETFL, 0)) == -1)
 698                 return -1;
 699         if(set) /* Turn blocking on - ie. clear nonblock flag */
 700                 val &= ~FLAG_TO_SET;
 701         else
 702                 val |= FLAG_TO_SET;
 703         return sys_fcntl_long( fd, F_SETFL, val);
 704 #undef FLAG_TO_SET
 705 }
 706
 707 /****************************************************************************
 708  Transfer some data between two fd's.
 709 ****************************************************************************/
 710
 711 #ifndef TRANSFER_BUF_SIZE
 712 #define TRANSFER_BUF_SIZE 65536
 713 #endif
 714
 715 ssize_t transfer_file_internal(int infd, int outfd, size_t n, ssize_t (*read_fn)(int, void *, size_t),
 716                                                 ssize_t (*write_fn)(int, const void *, size_t))
 717 {
 718         char *buf;
 719         size_t total = 0;
 720         ssize_t read_ret;
 721         ssize_t write_ret;
 722         size_t num_to_read_thistime;
 723         size_t num_written = 0;
 724
 725         if ((buf = malloc(TRANSFER_BUF_SIZE)) == NULL)
 726                 return -1;
 727
 728         while (total < n) {
 729                 num_to_read_thistime = MIN((n - total), TRANSFER_BUF_SIZE);
 730
 731                 read_ret = (*read_fn)(infd, buf, num_to_read_thistime);
 732                 if (read_ret == -1) {
 733                         DEBUG(0,("transfer_file_internal: read failure. Error = %s\n", strerror(errno) ));
 734                         SAFE_FREE(buf);
 735                         return -1;
 736                 }
 737                 if (read_ret == 0)
 738                         break;
 739
 740                 num_written = 0;
 741
 742                 while (num_written < read_ret) {
 743                         write_ret = (*write_fn)(outfd,buf + num_written, read_ret - num_written);
 744
 745                         if (write_ret == -1) {
 746                                 DEBUG(0,("transfer_file_internal: write failure. Error = %s\n", strerror(errno) ));
 747                                 SAFE_FREE(buf);
 748                                 return -1;
 749                         }
 750                         if (write_ret == 0)
 751                                 return (ssize_t)total;
 752
 753                         num_written += (size_t)write_ret;
 754                 }
 755
 756                 total += (size_t)read_ret;
 757         }
 758
 759         SAFE_FREE(buf);
 760         return (ssize_t)total;
 761 }
 762
 763 SMB_OFF_T transfer_file(int infd,int outfd,SMB_OFF_T n)
 764 {
 765         return (SMB_OFF_T)transfer_file_internal(infd, outfd, (size_t)n, sys_read, sys_write);
 766 }
 767
 768 /*******************************************************************
 769  Sleep for a specified number of milliseconds.
 770 ********************************************************************/
 771
 772 void msleep(unsigned int t)
 773 {
 774         unsigned int tdiff=0;
 775         struct timeval tval,t1,t2;
 776         fd_set fds;
 777
 778         GetTimeOfDay(&t1);
 779         GetTimeOfDay(&t2);
 780
 781         while (tdiff < t) {
 782                 tval.tv_sec = (t-tdiff)/1000;
 783                 tval.tv_usec = 1000*((t-tdiff)%1000);
 784
 785                 /* Never wait for more than 1 sec. */
 786                 if (tval.tv_sec > 1) {
 787                         tval.tv_sec = 1;
 788                         tval.tv_usec = 0;
 789                 }
 790
 791                 FD_ZERO(&fds);
 792                 errno = 0;
 793                 sys_select_intr(0,&fds,NULL,NULL,&tval);
 794
 795                 GetTimeOfDay(&t2);
 796                 if (t2.tv_sec < t1.tv_sec) {
 797                         /* Someone adjusted time... */
 798                         t1 = t2;
 799                 }
 800
 801                 tdiff = TvalDiff(&t1,&t2);
 802         }
 803 }
 804
 805 /****************************************************************************
 806  Become a daemon, discarding the controlling terminal.
 807 ****************************************************************************/
 808
 809 void become_daemon(BOOL Fork)
 810 {
 811         if (Fork) {
 812                 if (sys_fork()) {
 813                         _exit(0);
 814                 }
 815         }
 816
 817   /* detach from the terminal */
 818 #ifdef HAVE_SETSID
 819         setsid();
 820 #elif defined(TIOCNOTTY)
 821         {
 822                 int i = sys_open("/dev/tty", O_RDWR, 0);
 823                 if (i != -1) {
 824                         ioctl(i, (int) TIOCNOTTY, (char *)0);
 825                         close(i);
 826                 }
 827         }
 828 #endif /* HAVE_SETSID */
 829
 830         /* Close fd's 0,1,2. Needed if started by rsh */
 831         close_low_fds(False);  /* Don't close stderr, let the debug system
 832                                   attach it to the logfile */
 833 }
 834
 835 /****************************************************************************
 836  Put up a yes/no prompt.
 837 ****************************************************************************/
 838
 839 BOOL yesno(char *p)
 840 {
 841         pstring ans;
 842         printf("%s",p);
 843
 844         if (!fgets(ans,sizeof(ans)-1,stdin))
 845                 return(False);
 846
 847         if (*ans == 'y' || *ans == 'Y')
 848                 return(True);
 849
 850         return(False);
 851 }
 852
 853 /****************************************************************************
 854  Expand a pointer to be a particular size.
 855 ****************************************************************************/
 856
 857 void *Realloc(void *p,size_t size)
 858 {
 859         void *ret=NULL;
 860
 861         if (size == 0) {
 862                 SAFE_FREE(p);
 863                 DEBUG(5,("Realloc asked for 0 bytes\n"));
 864                 return NULL;
 865         }
 866
 867         if (!p)
 868                 ret = (void *)malloc(size);
 869         else
 870                 ret = (void *)realloc(p,size);
 871
 872         if (!ret)
 873                 DEBUG(0,("Memory allocation error: failed to expand to %d bytes\n",(int)size));
 874
 875         return(ret);
 876 }
 877
 878 void *Realloc_zero(void *ptr, size_t size)
 879 {
 880         void *tptr = NULL;
 881
 882         tptr = Realloc(ptr, size);
 883         if(tptr == NULL)
 884                 return NULL;
 885
 886         memset((char *)tptr,'\0',size);
 887
 888         return tptr;
 889 }
 890
 891 /****************************************************************************
 892  Free memory, checks for NULL.
 893  Use directly SAFE_FREE()
 894  Exists only because we need to pass a function pointer somewhere --SSS
 895 ****************************************************************************/
 896
 897 void safe_free(void *p)
 898 {
 899         SAFE_FREE(p);
 900 }
 901
 902 /****************************************************************************
 903  Get my own name and IP.
 904 ****************************************************************************/
 905
 906 BOOL get_myname(char *my_name)
 907 {
 908         pstring hostname;
 909
 910         *hostname = 0;
 911
 912         /* get my host name */
 913         if (gethostname(hostname, sizeof(hostname)) == -1) {
 914                 DEBUG(0,("gethostname failed\n"));
 915                 return False;
 916         }
 917
 918         /* Ensure null termination. */
 919         hostname[sizeof(hostname)-1] = '\0';
 920
 921         if (my_name) {
 922                 /* split off any parts after an initial . */
 923                 char *p = strchr_m(hostname,'.');
 924
 925                 if (p)
 926                         *p = 0;
 927
 928                 fstrcpy(my_name,hostname);
 929         }
 930
 931         return(True);
 932 }
 933
 934 /****************************************************************************
 935  Get my own name, including domain.
 936 ****************************************************************************/
 937
 938 BOOL get_myfullname(char *my_name)
 939 {
 940         pstring hostname;
 941
 942         *hostname = 0;
 943
 944         /* get my host name */
 945         if (gethostname(hostname, sizeof(hostname)) == -1) {
 946                 DEBUG(0,("gethostname failed\n"));
 947                 return False;
 948         }
 949
 950         /* Ensure null termination. */
 951         hostname[sizeof(hostname)-1] = '\0';
 952
 953         if (my_name)
 954                 fstrcpy(my_name, hostname);
 955         return True;
 956 }
 957
 958 /****************************************************************************
 959  Get my own domain name.
 960 ****************************************************************************/
 961
 962 BOOL get_mydomname(fstring my_domname)
 963 {
 964         pstring hostname;
 965         char *p;
 966         struct hostent *hp;
 967
 968         *hostname = 0;
 969         /* get my host name */
 970         if (gethostname(hostname, sizeof(hostname)) == -1) {
 971                 DEBUG(0,("gethostname failed\n"));
 972                 return False;
 973         }
 974
 975         /* Ensure null termination. */
 976         hostname[sizeof(hostname)-1] = '\0';
 977
 978
 979         p = strchr_m(hostname, '.');
 980
 981         if (p) {
 982                 p++;
 983
 984                 if (my_domname)
 985                         fstrcpy(my_domname, p);
 986         }
 987
 988         if (!(hp = sys_gethostbyname(hostname))) {
 989                 return False;
 990         }
 991
 992         p = strchr_m(hp->h_name, '.');
 993
 994         if (p) {
 995                 p++;
 996
 997                 if (my_domname)
 998                         fstrcpy(my_domname, p);
 999                 return True;
1000         }
1001
1002         return False;
1003 }
1004
1005 /****************************************************************************
1006  Interpret a protocol description string, with a default.
1007 ****************************************************************************/
1008
1009 int interpret_protocol(const char *str,int def)
1010 {
1011         if (strequal(str,"NT1"))
1012                 return(PROTOCOL_NT1);
1013         if (strequal(str,"LANMAN2"))
1014                 return(PROTOCOL_LANMAN2);
1015         if (strequal(str,"LANMAN1"))
1016                 return(PROTOCOL_LANMAN1);
1017         if (strequal(str,"CORE"))
1018                 return(PROTOCOL_CORE);
1019         if (strequal(str,"COREPLUS"))
1020                 return(PROTOCOL_COREPLUS);
1021         if (strequal(str,"CORE+"))
1022                 return(PROTOCOL_COREPLUS);
1023
1024         DEBUG(0,("Unrecognised protocol level %s\n",str));
1025
1026         return(def);
1027 }
1028
1029 /****************************************************************************
1030  Return true if a string could be a pure IP address.
1031 ****************************************************************************/
1032
1033 BOOL is_ipaddress(const char *str)
1034 {
1035         BOOL pure_address = True;
1036         int i;
1037
1038         for (i=0; pure_address && str[i]; i++)
1039                 if (!(isdigit((int)str[i]) || str[i] == '.'))
1040                         pure_address = False;
1041
1042         /* Check that a pure number is not misinterpreted as an IP */
1043         pure_address = pure_address && (strchr_m(str, '.') != NULL);
1044
1045         return pure_address;
1046 }
1047
1048 /****************************************************************************
1049  Interpret an internet address or name into an IP address in 4 byte form.
1050 ****************************************************************************/
1051
1052 uint32 interpret_addr(const char *str)
1053 {
1054         struct hostent *hp;
1055         uint32 res;
1056
1057         if (strcmp(str,"0.0.0.0") == 0)
1058                 return(0);
1059         if (strcmp(str,"255.255.255.255") == 0)
1060                 return(0xFFFFFFFF);
1061
1062   /* if it's in the form of an IP address then get the lib to interpret it */
1063         if (is_ipaddress(str)) {
1064                 res = inet_addr(str);
1065         } else {
1066                 /* otherwise assume it's a network name of some sort and use
1067                         sys_gethostbyname */
1068                 if ((hp = sys_gethostbyname(str)) == 0) {
1069                         DEBUG(3,("sys_gethostbyname: Unknown host. %s\n",str));
1070                         return 0;
1071                 }
1072
1073                 if(hp->h_addr == NULL) {
1074                         DEBUG(3,("sys_gethostbyname: host address is invalid for host %s\n",str));
1075                         return 0;
1076                 }
1077                 putip((char *)&res,(char *)hp->h_addr);
1078         }
1079
1080         if (res == (uint32)-1)
1081                 return(0);
1082
1083         return(res);
1084 }
1085
1086 /*******************************************************************
1087  A convenient addition to interpret_addr().
1088 ******************************************************************/
1089
1090 struct in_addr *interpret_addr2(const char *str)
1091 {
1092         static struct in_addr ret;
1093         uint32 a = interpret_addr(str);
1094         ret.s_addr = a;
1095         return(&ret);
1096 }
1097
1098 /*******************************************************************
1099  Check if an IP is the 0.0.0.0.
1100 ******************************************************************/
1101
1102 BOOL is_zero_ip(struct in_addr ip)
1103 {
1104         uint32 a;
1105         putip((char *)&a,(char *)&ip);
1106         return(a == 0);
1107 }
1108
1109 /*******************************************************************
1110  Set an IP to 0.0.0.0.
1111 ******************************************************************/
1112
1113 void zero_ip(struct in_addr *ip)
1114 {
1115         static BOOL init;
1116         static struct in_addr ipzero;
1117
1118         if (!init) {
1119                 ipzero = *interpret_addr2("0.0.0.0");
1120                 init = True;
1121         }
1122
1123         *ip = ipzero;
1124 }
1125
1126 #if (defined(HAVE_NETGROUP) && defined(WITH_AUTOMOUNT))
1127 /******************************************************************
1128  Remove any mount options such as -rsize=2048,wsize=2048 etc.
1129  Based on a fix from <Thomas.Hepper@icem.de>.
1130 *******************************************************************/
1131
1132 static void strip_mount_options( pstring *str)
1133 {
1134         if (**str == '-') {
1135                 char *p = *str;
1136                 while(*p && !isspace(*p))
1137                         p++;
1138                 while(*p && isspace(*p))
1139                         p++;
1140                 if(*p) {
1141                         pstring tmp_str;
1142
1143                         pstrcpy(tmp_str, p);
1144                         pstrcpy(*str, tmp_str);
1145                 }
1146         }
1147 }
1148
1149 /*******************************************************************
1150  Patch from jkf@soton.ac.uk
1151  Split Luke's automount_server into YP lookup and string splitter
1152  so can easily implement automount_path().
1153  As we may end up doing both, cache the last YP result.
1154 *******************************************************************/
1155
1156 #ifdef WITH_NISPLUS_HOME
1157 char *automount_lookup(const char *user_name)
1158 {
1159         static fstring last_key = "";
1160         static pstring last_value = "";
1161
1162         char *nis_map = (char *)lp_nis_home_map_name();
1163
1164         char buffer[NIS_MAXATTRVAL + 1];
1165         nis_result *result;
1166         nis_object *object;
1167         entry_obj  *entry;
1168
1169         if (strcmp(user_name, last_key)) {
1170                 slprintf(buffer, sizeof(buffer)-1, "[key=%s],%s", user_name, nis_map);
1171                 DEBUG(5, ("NIS+ querystring: %s\n", buffer));
1172
1173                 if (result = nis_list(buffer, FOLLOW_PATH|EXPAND_NAME|HARD_LOOKUP, NULL, NULL)) {
1174                         if (result->status != NIS_SUCCESS) {
1175                                 DEBUG(3, ("NIS+ query failed: %s\n", nis_sperrno(result->status)));
1176                                 fstrcpy(last_key, ""); pstrcpy(last_value, "");
1177                         } else {
1178                                 object = result->objects.objects_val;
1179                                 if (object->zo_data.zo_type == ENTRY_OBJ) {
1180                                         entry = &object->zo_data.objdata_u.en_data;
1181                                         DEBUG(5, ("NIS+ entry type: %s\n", entry->en_type));
1182                                         DEBUG(3, ("NIS+ result: %s\n", entry->en_cols.en_cols_val[1].ec_value.ec_value_val));
1183
1184                                         pstrcpy(last_value, entry->en_cols.en_cols_val[1].ec_value.ec_value_val);
1185                                         pstring_sub(last_value, "&", user_name);
1186                                         fstrcpy(last_key, user_name);
1187                                 }
1188                         }
1189                 }
1190                 nis_freeresult(result);
1191         }
1192
1193         strip_mount_options(&last_value);
1194
1195         DEBUG(4, ("NIS+ Lookup: %s resulted in %s\n", user_name, last_value));
1196         return last_value;
1197 }
1198 #else /* WITH_NISPLUS_HOME */
1199
1200 char *automount_lookup(const char *user_name)
1201 {
1202         static fstring last_key = "";
1203         static pstring last_value = "";
1204
1205         int nis_error;        /* returned by yp all functions */
1206         char *nis_result;     /* yp_match inits this */
1207         int nis_result_len;  /* and set this */
1208         char *nis_domain;     /* yp_get_default_domain inits this */
1209         char *nis_map = (char *)lp_nis_home_map_name();
1210
1211         if ((nis_error = yp_get_default_domain(&nis_domain)) != 0) {
1212                 DEBUG(3, ("YP Error: %s\n", yperr_string(nis_error)));
1213                 return last_value;
1214         }
1215
1216         DEBUG(5, ("NIS Domain: %s\n", nis_domain));
1217
1218         if (!strcmp(user_name, last_key)) {
1219                 nis_result = last_value;
1220                 nis_result_len = strlen(last_value);
1221                 nis_error = 0;
1222         } else {
1223                 if ((nis_error = yp_match(nis_domain, nis_map, user_name, strlen(user_name),
1224                                 &nis_result, &nis_result_len)) == 0) {
1225                         if (!nis_error && nis_result_len >= sizeof(pstring)) {
1226                                 nis_result_len = sizeof(pstring)-1;
1227                         }
1228                         fstrcpy(last_key, user_name);
1229                         strncpy(last_value, nis_result, nis_result_len);
1230                         last_value[nis_result_len] = '\0';
1231                         strip_mount_options(&last_value);
1232
1233                 } else if(nis_error == YPERR_KEY) {
1234
1235                         /* If Key lookup fails user home server is not in nis_map
1236                                 use default information for server, and home directory */
1237                         last_value[0] = 0;
1238                         DEBUG(3, ("YP Key not found:  while looking up \"%s\" in map \"%s\"\n",
1239                                         user_name, nis_map));
1240                         DEBUG(3, ("using defaults for server and home directory\n"));
1241                 } else {
1242                         DEBUG(3, ("YP Error: \"%s\" while looking up \"%s\" in map \"%s\"\n",
1243                                         yperr_string(nis_error), user_name, nis_map));
1244                 }
1245         }
1246
1247         DEBUG(4, ("YP Lookup: %s resulted in %s\n", user_name, last_value));
1248         return last_value;
1249 }
1250 #endif /* WITH_NISPLUS_HOME */
1251 #endif
1252
1253 /*******************************************************************
1254  Are two IPs on the same subnet?
1255 ********************************************************************/
1256
1257 BOOL same_net(struct in_addr ip1,struct in_addr ip2,struct in_addr mask)
1258 {
1259         uint32 net1,net2,nmask;
1260
1261         nmask = ntohl(mask.s_addr);
1262         net1  = ntohl(ip1.s_addr);
1263         net2  = ntohl(ip2.s_addr);
1264
1265         return((net1 & nmask) == (net2 & nmask));
1266 }
1267
1268
1269 /****************************************************************************
1270  Check if a process exists. Does this work on all unixes?
1271 ****************************************************************************/
1272
1273 BOOL process_exists(pid_t pid)
1274 {
1275         /* Doing kill with a non-positive pid causes messages to be
1276          * sent to places we don't want. */
1277         SMB_ASSERT(pid > 0);
1278         return(kill(pid,0) == 0 || errno != ESRCH);
1279 }
1280
1281 /*******************************************************************
1282  Convert a uid into a user name.
1283 ********************************************************************/
1284
1285 const char *uidtoname(uid_t uid)
1286 {
1287         static fstring name;
1288         struct passwd *pass;
1289
1290         pass = getpwuid_alloc(uid);
1291         if (pass) {
1292                 fstrcpy(name, pass->pw_name);
1293                 passwd_free(&pass);
1294         } else {
1295                 slprintf(name, sizeof(name) - 1, "%ld",(long int)uid);
1296         }
1297         return name;
1298 }
1299
1300
1301 /*******************************************************************
1302  Convert a gid into a group name.
1303 ********************************************************************/
1304
1305 char *gidtoname(gid_t gid)
1306 {
1307         static fstring name;
1308         struct group *grp;
1309
1310         grp = getgrgid(gid);
1311         if (grp)
1312                 return(grp->gr_name);
1313         slprintf(name,sizeof(name) - 1, "%d",(int)gid);
1314         return(name);
1315 }
1316
1317 /*******************************************************************
1318  Convert a user name into a uid.
1319 ********************************************************************/
1320
1321 uid_t nametouid(const char *name)
1322 {
1323         struct passwd *pass;
1324         char *p;
1325         uid_t u;
1326
1327         pass = getpwnam_alloc(name);
1328         if (pass) {
1329                 u = pass->pw_uid;
1330                 passwd_free(&pass);
1331                 return u;
1332         }
1333
1334         u = (uid_t)strtol(name, &p, 0);
1335         if ((p != name) && (*p == '\0'))
1336                 return u;
1337
1338         return (uid_t)-1;
1339 }
1340
1341 /*******************************************************************
1342  Convert a name to a gid_t if possible. Return -1 if not a group.
1343 ********************************************************************/
1344
1345 gid_t nametogid(const char *name)
1346 {
1347         struct group *grp;
1348         char *p;
1349         gid_t g;
1350
1351         g = (gid_t)strtol(name, &p, 0);
1352         if ((p != name) && (*p == '\0'))
1353                 return g;
1354
1355         grp = sys_getgrnam(name);
1356         if (grp)
1357                 return(grp->gr_gid);
1358         return (gid_t)-1;
1359 }
1360
1361 /*******************************************************************
1362  Something really nasty happened - panic !
1363 ********************************************************************/
1364
1365 void smb_panic(const char *why)
1366 {
1367         char *cmd;
1368         int result;
1369 #ifdef HAVE_BACKTRACE_SYMBOLS
1370         void *backtrace_stack[BACKTRACE_STACK_SIZE];
1371         size_t backtrace_size;
1372         char **backtrace_strings;
1373 #endif
1374
1375 #ifdef DEVELOPER
1376         {
1377                 extern char *global_clobber_region_function;
1378                 extern unsigned int global_clobber_region_line;
1379
1380                 if (global_clobber_region_function) {
1381                         DEBUG(0,("smb_panic: clobber_region() last called from [%s(%u)]\n",
1382                                          global_clobber_region_function,
1383                                          global_clobber_region_line));
1384                 }
1385         }
1386 #endif
1387
1388         cmd = lp_panic_action();
1389         if (cmd && *cmd) {
1390                 DEBUG(0, ("smb_panic(): calling panic action [%s]\n", cmd));
1391                 result = system(cmd);
1392
1393                 if (result == -1)
1394                         DEBUG(0, ("smb_panic(): fork failed in panic action: %s\n",
1395                                           strerror(errno)));
1396                 else
1397                         DEBUG(0, ("smb_panic(): action returned status %d\n",
1398                                           WEXITSTATUS(result)));
1399         }
1400         DEBUG(0,("PANIC: %s\n", why));
1401
1402 #ifdef HAVE_BACKTRACE_SYMBOLS
1403         /* get the backtrace (stack frames) */
1404         backtrace_size = backtrace(backtrace_stack,BACKTRACE_STACK_SIZE);
1405         backtrace_strings = backtrace_symbols(backtrace_stack, backtrace_size);
1406
1407         DEBUG(0, ("BACKTRACE: %lu stack frames:\n",
1408                   (unsigned long)backtrace_size));
1409
1410         if (backtrace_strings) {
1411                 int i;
1412
1413                 for (i = 0; i < backtrace_size; i++)
1414                         DEBUGADD(0, (" #%u %s\n", i, backtrace_strings[i]));
1415
1416                 SAFE_FREE(backtrace_strings);
1417         }
1418
1419 #endif
1420
1421         dbgflush();
1422         abort();
1423 }
1424
1425 /*******************************************************************
1426   A readdir wrapper which just returns the file name.
1427  ********************************************************************/
1428
1429 const char *readdirname(DIR *p)
1430 {
1431         SMB_STRUCT_DIRENT *ptr;
1432         char *dname;
1433
1434         if (!p)
1435                 return(NULL);
1436
1437         ptr = (SMB_STRUCT_DIRENT *)sys_readdir(p);
1438         if (!ptr)
1439                 return(NULL);
1440
1441         dname = ptr->d_name;
1442
1443 #ifdef NEXT2
1444         if (telldir(p) < 0)
1445                 return(NULL);
1446 #endif
1447
1448 #ifdef HAVE_BROKEN_READDIR
1449         /* using /usr/ucb/cc is BAD */
1450         dname = dname - 2;
1451 #endif
1452
1453         {
1454                 static pstring buf;
1455                 int len = NAMLEN(ptr);
1456                 memcpy(buf, dname, len);
1457                 buf[len] = 0;
1458                 dname = buf;
1459         }
1460
1461         return(dname);
1462 }
1463
1464 /*******************************************************************
1465  Utility function used to decide if the last component
1466  of a path matches a (possibly wildcarded) entry in a namelist.
1467 ********************************************************************/
1468
1469 BOOL is_in_path(const char *name, name_compare_entry *namelist)
1470 {
1471         pstring last_component;
1472         char *p;
1473
1474         DEBUG(8, ("is_in_path: %s\n", name));
1475
1476         /* if we have no list it's obviously not in the path */
1477         if((namelist == NULL ) || ((namelist != NULL) && (namelist[0].name == NULL))) {
1478                 DEBUG(8,("is_in_path: no name list.\n"));
1479                 return False;
1480         }
1481
1482         /* Get the last component of the unix name. */
1483         p = strrchr_m(name, '/');
1484         strncpy(last_component, p ? ++p : name, sizeof(last_component)-1);
1485         last_component[sizeof(last_component)-1] = '\0';
1486
1487         for(; namelist->name != NULL; namelist++) {
1488                 if(namelist->is_wild) {
1489                         if (mask_match(last_component, namelist->name, case_sensitive)) {
1490                                 DEBUG(8,("is_in_path: mask match succeeded\n"));
1491                                 return True;
1492                         }
1493                 } else {
1494                         if((case_sensitive && (strcmp(last_component, namelist->name) == 0))||
1495                                                 (!case_sensitive && (StrCaseCmp(last_component, namelist->name) == 0))) {
1496                                 DEBUG(8,("is_in_path: match succeeded\n"));
1497                                 return True;
1498                         }
1499                 }
1500         }
1501         DEBUG(8,("is_in_path: match not found\n"));
1502
1503         return False;
1504 }
1505
1506 /*******************************************************************
1507  Strip a '/' separated list into an array of
1508  name_compare_enties structures suitable for
1509  passing to is_in_path(). We do this for
1510  speed so we can pre-parse all the names in the list
1511  and don't do it for each call to is_in_path().
1512  namelist is modified here and is assumed to be
1513  a copy owned by the caller.
1514  We also check if the entry contains a wildcard to
1515  remove a potentially expensive call to mask_match
1516  if possible.
1517 ********************************************************************/
1518
1519 void set_namearray(name_compare_entry **ppname_array, char *namelist)
1520 {
1521         char *name_end;
1522         char *nameptr = namelist;
1523         int num_entries = 0;
1524         int i;
1525
1526         (*ppname_array) = NULL;
1527
1528         if((nameptr == NULL ) || ((nameptr != NULL) && (*nameptr == '\0')))
1529                 return;
1530
1531         /* We need to make two passes over the string. The
1532                 first to count the number of elements, the second
1533                 to split it.
1534         */
1535
1536         while(*nameptr) {
1537                 if ( *nameptr == '/' ) {
1538                         /* cope with multiple (useless) /s) */
1539                         nameptr++;
1540                         continue;
1541                 }
1542                 /* find the next / */
1543                 name_end = strchr_m(nameptr, '/');
1544
1545                 /* oops - the last check for a / didn't find one. */
1546                 if (name_end == NULL)
1547                         break;
1548
1549                 /* next segment please */
1550                 nameptr = name_end + 1;
1551                 num_entries++;
1552         }
1553
1554         if(num_entries == 0)
1555                 return;
1556
1557         if(( (*ppname_array) = (name_compare_entry *)malloc(
1558                                         (num_entries + 1) * sizeof(name_compare_entry))) == NULL) {
1559                 DEBUG(0,("set_namearray: malloc fail\n"));
1560                 return;
1561         }
1562
1563         /* Now copy out the names */
1564         nameptr = namelist;
1565         i = 0;
1566         while(*nameptr) {
1567                 if ( *nameptr == '/' ) {
1568                         /* cope with multiple (useless) /s) */
1569                         nameptr++;
1570                         continue;
1571                 }
1572                 /* find the next / */
1573                 if ((name_end = strchr_m(nameptr, '/')) != NULL)
1574                         *name_end = 0;
1575
1576                 /* oops - the last check for a / didn't find one. */
1577                 if(name_end == NULL)
1578                         break;
1579
1580                 (*ppname_array)[i].is_wild = ms_has_wild(nameptr);
1581                 if(((*ppname_array)[i].name = strdup(nameptr)) == NULL) {
1582                         DEBUG(0,("set_namearray: malloc fail (1)\n"));
1583                         return;
1584                 }
1585
1586                 /* next segment please */
1587                 nameptr = name_end + 1;
1588                 i++;
1589         }
1590
1591         (*ppname_array)[i].name = NULL;
1592
1593         return;
1594 }
1595
1596 /****************************************************************************
1597  Routine to free a namearray.
1598 ****************************************************************************/
1599
1600 void free_namearray(name_compare_entry *name_array)
1601 {
1602         int i;
1603
1604         if(name_array == NULL)
1605                 return;
1606
1607         for(i=0; name_array[i].name!=NULL; i++)
1608                 SAFE_FREE(name_array[i].name);
1609         SAFE_FREE(name_array);
1610 }
1611
1612 /****************************************************************************
1613  Simple routine to do POSIX file locking. Cruft in NFS and 64->32 bit mapping
1614  is dealt with in posix.c
1615 ****************************************************************************/
1616
1617 BOOL fcntl_lock(int fd, int op, SMB_OFF_T offset, SMB_OFF_T count, int type)
1618 {
1619         SMB_STRUCT_FLOCK lock;
1620         int ret;
1621
1622         DEBUG(8,("fcntl_lock %d %d %.0f %.0f %d\n",fd,op,(double)offset,(double)count,type));
1623
1624         lock.l_type = type;
1625         lock.l_whence = SEEK_SET;
1626         lock.l_start = offset;
1627         lock.l_len = count;
1628         lock.l_pid = 0;
1629
1630         ret = sys_fcntl_ptr(fd,op,&lock);
1631
1632         if (ret == -1 && errno != 0)
1633                 DEBUG(3,("fcntl_lock: fcntl lock gave errno %d (%s)\n",errno,strerror(errno)));
1634
1635         /* a lock query */
1636         if (op == SMB_F_GETLK) {
1637                 if ((ret != -1) &&
1638                                 (lock.l_type != F_UNLCK) &&
1639                                 (lock.l_pid != 0) &&
1640                                 (lock.l_pid != sys_getpid())) {
1641                         DEBUG(3,("fcntl_lock: fd %d is locked by pid %d\n",fd,(int)lock.l_pid));
1642                         return(True);
1643                 }
1644
1645                 /* it must be not locked or locked by me */
1646                 return(False);
1647         }
1648
1649         /* a lock set or unset */
1650         if (ret == -1) {
1651                 DEBUG(3,("fcntl_lock: lock failed at offset %.0f count %.0f op %d type %d (%s)\n",
1652                         (double)offset,(double)count,op,type,strerror(errno)));
1653                 return(False);
1654         }
1655
1656         /* everything went OK */
1657         DEBUG(8,("fcntl_lock: Lock call successful\n"));
1658
1659         return(True);
1660 }
1661
1662 /*******************************************************************
1663  Is the name specified one of my netbios names.
1664  Returns true if it is equal, false otherwise.
1665 ********************************************************************/
1666
1667 BOOL is_myname(const char *s)
1668 {
1669         int n;
1670         BOOL ret = False;
1671
1672         for (n=0; my_netbios_names(n); n++) {
1673                 if (strequal(my_netbios_names(n), s)) {
1674                         ret=True;
1675                         break;
1676                 }
1677         }
1678         DEBUG(8, ("is_myname(\"%s\") returns %d\n", s, ret));
1679         return(ret);
1680 }
1681
1682 /********************************************************************
1683  Return only the first IP address of our configured interfaces
1684  as a string
1685  *******************************************************************/
1686
1687 const char* get_my_primary_ip (void)
1688 {
1689         static fstring ip_string;
1690         int n;
1691         struct iface_struct nics[MAX_INTERFACES];
1692
1693         if ((n=get_interfaces(nics, MAX_INTERFACES)) <= 0)
1694                 return NULL;
1695
1696         fstrcpy(ip_string, inet_ntoa(nics[0].ip));
1697         return ip_string;
1698 }
1699
1700 BOOL is_myname_or_ipaddr(const char *s)
1701 {
1702         /* optimize for the common case */
1703         if (strequal(s, global_myname()))
1704                 return True;
1705
1706         /* maybe its an IP address? */
1707         if (is_ipaddress(s)) {
1708                 struct iface_struct nics[MAX_INTERFACES];
1709                 int i, n;
1710                 uint32 ip;
1711
1712                 ip = interpret_addr(s);
1713                 if ((ip==0) || (ip==0xffffffff))
1714                         return False;
1715
1716                 n = get_interfaces(nics, MAX_INTERFACES);
1717                 for (i=0; i<n; i++) {
1718                         if (ip == nics[i].ip.s_addr)
1719                                 return True;
1720                 }
1721         }
1722
1723         /* check for an alias */
1724         if (is_myname(s))
1725                 return True;
1726
1727         /* no match */
1728         return False;
1729 }
1730
1731 /*******************************************************************
1732  Is the name specified our workgroup/domain.
1733  Returns true if it is equal, false otherwise.
1734 ********************************************************************/
1735
1736 BOOL is_myworkgroup(const char *s)
1737 {
1738         BOOL ret = False;
1739
1740         if (strequal(s, lp_workgroup())) {
1741                 ret=True;
1742         }
1743
1744         DEBUG(8, ("is_myworkgroup(\"%s\") returns %d\n", s, ret));
1745         return(ret);
1746 }
1747
1748 /*******************************************************************
1749  we distinguish between 2K and XP by the "Native Lan Manager" string
1750    WinXP => "Windows 2002 5.1"
1751    Win2k => "Windows 2000 5.0"
1752    NT4   => "Windows NT 4.0"
1753    Win9x => "Windows 4.0"
1754 ********************************************************************/
1755
1756 void ra_lanman_string( const char *native_lanman )
1757 {
1758         if ( 0 == strcmp( native_lanman, "Windows 2002 5.1" ) )
1759                 set_remote_arch( RA_WINXP );
1760         else if ( 0 == strcmp( native_lanman, "Windows .NET 5.2" ) )
1761                 set_remote_arch( RA_WIN2K3 );
1762 }
1763
1764 /*******************************************************************
1765  Set the horrid remote_arch string based on an enum.
1766 ********************************************************************/
1767
1768 void set_remote_arch(enum remote_arch_types type)
1769 {
1770         extern fstring remote_arch;
1771         ra_type = type;
1772         switch( type ) {
1773         case RA_WFWG:
1774                 fstrcpy(remote_arch, "WfWg");
1775                 return;
1776         case RA_OS2:
1777                 fstrcpy(remote_arch, "OS2");
1778                 return;
1779         case RA_WIN95:
1780                 fstrcpy(remote_arch, "Win95");
1781                 return;
1782         case RA_WINNT:
1783                 fstrcpy(remote_arch, "WinNT");
1784                 return;
1785         case RA_WIN2K:
1786                 fstrcpy(remote_arch, "Win2K");
1787                 return;
1788         case RA_WINXP:
1789                 fstrcpy(remote_arch, "WinXP");
1790                 return;
1791         case RA_WIN2K3:
1792                 fstrcpy(remote_arch, "Win2K3");
1793                 return;
1794         case RA_SAMBA:
1795                 fstrcpy(remote_arch,"Samba");
1796                 return;
1797         default:
1798                 ra_type = RA_UNKNOWN;
1799                 fstrcpy(remote_arch, "UNKNOWN");
1800                 break;
1801         }
1802 }
1803
1804 /*******************************************************************
1805  Get the remote_arch type.
1806 ********************************************************************/
1807
1808 enum remote_arch_types get_remote_arch(void)
1809 {
1810         return ra_type;
1811 }
1812
1813 void print_asc(int level, const unsigned char *buf,int len)
1814 {
1815         int i;
1816         for (i=0;i<len;i++)
1817                 DEBUG(level,("%c", isprint(buf[i])?buf[i]:'.'));
1818 }
1819
1820 void dump_data(int level, const char *buf1,int len)
1821 {
1822         const unsigned char *buf = (const unsigned char *)buf1;
1823         int i=0;
1824         if (len<=0) return;
1825
1826         if (!DEBUGLVL(level)) return;
1827
1828         DEBUGADD(level,("[%03X] ",i));
1829         for (i=0;i<len;) {
1830                 DEBUGADD(level,("%02X ",(int)buf[i]));
1831                 i++;
1832                 if (i%8 == 0) DEBUGADD(level,(" "));
1833                 if (i%16 == 0) {
1834                         print_asc(level,&buf[i-16],8); DEBUGADD(level,(" "));
1835                         print_asc(level,&buf[i-8],8); DEBUGADD(level,("\n"));
1836                         if (i<len) DEBUGADD(level,("[%03X] ",i));
1837                 }
1838         }
1839         if (i%16) {
1840                 int n;
1841                 n = 16 - (i%16);
1842                 DEBUGADD(level,(" "));
1843                 if (n>8) DEBUGADD(level,(" "));
1844                 while (n--) DEBUGADD(level,("   "));
1845                 n = MIN(8,i%16);
1846                 print_asc(level,&buf[i-(i%16)],n); DEBUGADD(level,( " " ));
1847                 n = (i%16) - n;
1848                 if (n>0) print_asc(level,&buf[i-n],n);
1849                 DEBUGADD(level,("\n"));
1850         }
1851 }
1852
1853 void dump_data_pw(const char *msg, const uchar * data, size_t len)
1854 {
1855 #ifdef DEBUG_PASSWORD
1856         DEBUG(11, ("%s", msg));
1857         if (data != NULL && len > 0)
1858         {
1859                 dump_data(11, data, len);
1860         }
1861 #endif
1862 }
1863
1864 char *tab_depth(int depth)
1865 {
1866         static pstring spaces;
1867         memset(spaces, ' ', depth * 4);
1868         spaces[depth * 4] = 0;
1869         return spaces;
1870 }
1871
1872 /*****************************************************************************
1873  Provide a checksum on a string
1874
1875  Input:  s - the null-terminated character string for which the checksum
1876              will be calculated.
1877
1878   Output: The checksum value calculated for s.
1879 *****************************************************************************/
1880
1881 int str_checksum(const char *s)
1882 {
1883         int res = 0;
1884         int c;
1885         int i=0;
1886
1887         while(*s) {
1888                 c = *s;
1889                 res ^= (c << (i % 15)) ^ (c >> (15-(i%15)));
1890                 s++;
1891                 i++;
1892         }
1893         return(res);
1894 }
1895
1896 /*****************************************************************
1897  Zero a memory area then free it. Used to catch bugs faster.
1898 *****************************************************************/
1899
1900 void zero_free(void *p, size_t size)
1901 {
1902         memset(p, 0, size);
1903         SAFE_FREE(p);
1904 }
1905
1906 /*****************************************************************
1907  Set our open file limit to a requested max and return the limit.
1908 *****************************************************************/
1909
1910 int set_maxfiles(int requested_max)
1911 {
1912 #if (defined(HAVE_GETRLIMIT) && defined(RLIMIT_NOFILE))
1913         struct rlimit rlp;
1914         int saved_current_limit;
1915
1916         if(getrlimit(RLIMIT_NOFILE, &rlp)) {
1917                 DEBUG(0,("set_maxfiles: getrlimit (1) for RLIMIT_NOFILE failed with error %s\n",
1918                         strerror(errno) ));
1919                 /* just guess... */
1920                 return requested_max;
1921         }
1922
1923         /*
1924          * Set the fd limit to be real_max_open_files + MAX_OPEN_FUDGEFACTOR to
1925          * account for the extra fd we need
1926          * as well as the log files and standard
1927          * handles etc. Save the limit we want to set in case
1928          * we are running on an OS that doesn't support this limit (AIX)
1929          * which always returns RLIM_INFINITY for rlp.rlim_max.
1930          */
1931
1932         /* Try raising the hard (max) limit to the requested amount. */
1933
1934 #if defined(RLIM_INFINITY)
1935         if (rlp.rlim_max != RLIM_INFINITY) {
1936                 int orig_max = rlp.rlim_max;
1937
1938                 if ( rlp.rlim_max < requested_max )
1939                         rlp.rlim_max = requested_max;
1940
1941                 /* This failing is not an error - many systems (Linux) don't
1942                         support our default request of 10,000 open files. JRA. */
1943
1944                 if(setrlimit(RLIMIT_NOFILE, &rlp)) {
1945                         DEBUG(3,("set_maxfiles: setrlimit for RLIMIT_NOFILE for %d max files failed with error %s\n",
1946                                 (int)rlp.rlim_max, strerror(errno) ));
1947
1948                         /* Set failed - restore original value from get. */
1949                         rlp.rlim_max = orig_max;
1950                 }
1951         }
1952 #endif
1953
1954         /* Now try setting the soft (current) limit. */
1955
1956         saved_current_limit = rlp.rlim_cur = MIN(requested_max,rlp.rlim_max);
1957
1958         if(setrlimit(RLIMIT_NOFILE, &rlp)) {
1959                 DEBUG(0,("set_maxfiles: setrlimit for RLIMIT_NOFILE for %d files failed with error %s\n",
1960                         (int)rlp.rlim_cur, strerror(errno) ));
1961                 /* just guess... */
1962                 return saved_current_limit;
1963         }
1964
1965         if(getrlimit(RLIMIT_NOFILE, &rlp)) {
1966                 DEBUG(0,("set_maxfiles: getrlimit (2) for RLIMIT_NOFILE failed with error %s\n",
1967                         strerror(errno) ));
1968                 /* just guess... */
1969                 return saved_current_limit;
1970     }
1971
1972 #if defined(RLIM_INFINITY)
1973         if(rlp.rlim_cur == RLIM_INFINITY)
1974                 return saved_current_limit;
1975 #endif
1976
1977         if((int)rlp.rlim_cur > saved_current_limit)
1978                 return saved_current_limit;
1979
1980         return rlp.rlim_cur;
1981 #else /* !defined(HAVE_GETRLIMIT) || !defined(RLIMIT_NOFILE) */
1982         /*
1983          * No way to know - just guess...
1984          */
1985         return requested_max;
1986 #endif
1987 }
1988
1989 /*****************************************************************
1990  Splits out the start of the key (HKLM or HKU) and the rest of the key.
1991 *****************************************************************/
1992
1993 BOOL reg_split_key(const char *full_keyname, uint32 *reg_type, char *key_name)
1994 {
1995         pstring tmp;
1996
1997         if (!next_token(&full_keyname, tmp, "\\", sizeof(tmp)))
1998                 return False;
1999
2000         (*reg_type) = 0;
2001
2002         DEBUG(10, ("reg_split_key: hive %s\n", tmp));
2003
2004         if (strequal(tmp, "HKLM") || strequal(tmp, "HKEY_LOCAL_MACHINE"))
2005                 (*reg_type) = HKEY_LOCAL_MACHINE;
2006         else if (strequal(tmp, "HKU") || strequal(tmp, "HKEY_USERS"))
2007                 (*reg_type) = HKEY_USERS;
2008         else {
2009                 DEBUG(10,("reg_split_key: unrecognised hive key %s\n", tmp));
2010                 return False;
2011         }
2012
2013         if (next_token(&full_keyname, tmp, "\n\r", sizeof(tmp)))
2014                 fstrcpy(key_name, tmp);
2015         else
2016                 key_name[0] = 0;
2017
2018         DEBUG(10, ("reg_split_key: name %s\n", key_name));
2019
2020         return True;
2021 }
2022
2023 /*****************************************************************
2024  Possibly replace mkstemp if it is broken.
2025 *****************************************************************/
2026
2027 int smb_mkstemp(char *template)
2028 {
2029 #if HAVE_SECURE_MKSTEMP
2030         return mkstemp(template);
2031 #else
2032         /* have a reasonable go at emulating it. Hope that
2033            the system mktemp() isn't completly hopeless */
2034         char *p = mktemp(template);
2035         if (!p)
2036                 return -1;
2037         return open(p, O_CREAT|O_EXCL|O_RDWR, 0600);
2038 #endif
2039 }
2040
2041 /*****************************************************************
2042  malloc that aborts with smb_panic on fail or zero size.
2043  *****************************************************************/
2044
2045 void *smb_xmalloc(size_t size)
2046 {
2047         void *p;
2048         if (size == 0)
2049                 smb_panic("smb_xmalloc: called with zero size.\n");
2050         if ((p = malloc(size)) == NULL) {
2051                 DEBUG(0, ("smb_xmalloc() failed to allocate %lu bytes\n", (unsigned long)size));
2052                 smb_panic("smb_xmalloc: malloc fail.\n");
2053         }
2054         return p;
2055 }
2056
2057 /**
2058  Memdup with smb_panic on fail.
2059 **/
2060
2061 void *smb_xmemdup(const void *p, size_t size)
2062 {
2063         void *p2;
2064         p2 = smb_xmalloc(size);
2065         memcpy(p2, p, size);
2066         return p2;
2067 }
2068
2069 /**
2070  strdup that aborts on malloc fail.
2071 **/
2072
2073 char *smb_xstrdup(const char *s)
2074 {
2075         char *s1 = strdup(s);
2076         if (!s1)
2077                 smb_panic("smb_xstrdup: malloc fail\n");
2078         return s1;
2079 }
2080
2081 /**
2082  strndup that aborts on malloc fail.
2083 **/
2084
2085 char *smb_xstrndup(const char *s, size_t n)
2086 {
2087         char *s1 = strndup(s, n);
2088         if (!s1)
2089                 smb_panic("smb_xstrndup: malloc fail\n");
2090         return s1;
2091 }
2092
2093 /*
2094   vasprintf that aborts on malloc fail
2095 */
2096
2097  int smb_xvasprintf(char **ptr, const char *format, va_list ap)
2098 {
2099         int n;
2100         va_list ap2;
2101
2102         VA_COPY(ap2, ap);
2103
2104         n = vasprintf(ptr, format, ap2);
2105         if (n == -1 || ! *ptr)
2106                 smb_panic("smb_xvasprintf: out of memory");
2107         return n;
2108 }
2109
2110 /*****************************************************************
2111  Like strdup but for memory.
2112 *****************************************************************/
2113
2114 void *memdup(const void *p, size_t size)
2115 {
2116         void *p2;
2117         if (size == 0)
2118                 return NULL;
2119         p2 = malloc(size);
2120         if (!p2)
2121                 return NULL;
2122         memcpy(p2, p, size);
2123         return p2;
2124 }
2125
2126 /*****************************************************************
2127  Get local hostname and cache result.
2128 *****************************************************************/
2129
2130 char *myhostname(void)
2131 {
2132         static pstring ret;
2133         if (ret[0] == 0)
2134                 get_myname(ret);
2135         return ret;
2136 }
2137
2138 /*****************************************************************
2139  A useful function for returning a path in the Samba lock directory.
2140 *****************************************************************/
2141
2142 char *lock_path(const char *name)
2143 {
2144         static pstring fname;
2145
2146         pstrcpy(fname,lp_lockdir());
2147         trim_char(fname,'\0','/');
2148
2149         if (!directory_exist(fname,NULL))
2150                 mkdir(fname,0755);
2151
2152         pstrcat(fname,"/");
2153         pstrcat(fname,name);
2154
2155         return fname;
2156 }
2157
2158 /*****************************************************************
2159  A useful function for returning a path in the Samba pid directory.
2160 *****************************************************************/
2161
2162 char *pid_path(const char *name)
2163 {
2164         static pstring fname;
2165
2166         pstrcpy(fname,lp_piddir());
2167         trim_char(fname,'\0','/');
2168
2169         if (!directory_exist(fname,NULL))
2170                 mkdir(fname,0755);
2171
2172         pstrcat(fname,"/");
2173         pstrcat(fname,name);
2174
2175         return fname;
2176 }
2177
2178 /**
2179  * @brief Returns an absolute path to a file in the Samba lib directory.
2180  *
2181  * @param name File to find, relative to LIBDIR.
2182  *
2183  * @retval Pointer to a static #pstring containing the full path.
2184  **/
2185
2186 char *lib_path(const char *name)
2187 {
2188         static pstring fname;
2189         fstr_sprintf(fname, "%s/%s", dyn_LIBDIR, name);
2190         return fname;
2191 }
2192
2193 /**
2194  * @brief Returns the platform specific shared library extension.
2195  *
2196  * @retval Pointer to a static #fstring containing the extension.
2197  **/
2198
2199 const char *shlib_ext(void)
2200 {
2201   return dyn_SHLIBEXT;
2202 }
2203
2204 /*******************************************************************
2205  Given a filename - get its directory name
2206  NB: Returned in static storage.  Caveats:
2207  o  Not safe in thread environment.
2208  o  Caller must not free.
2209  o  If caller wishes to preserve, they should copy.
2210 ********************************************************************/
2211
2212 char *parent_dirname(const char *path)
2213 {
2214         static pstring dirpath;
2215         char *p;
2216
2217         if (!path)
2218                 return(NULL);
2219
2220         pstrcpy(dirpath, path);
2221         p = strrchr_m(dirpath, '/');  /* Find final '/', if any */
2222         if (!p) {
2223                 pstrcpy(dirpath, ".");    /* No final "/", so dir is "." */
2224         } else {
2225                 if (p == dirpath)
2226                         ++p;    /* For root "/", leave "/" in place */
2227                 *p = '\0';
2228         }
2229         return dirpath;
2230 }
2231
2232
2233 /*******************************************************************
2234  Determine if a pattern contains any Microsoft wildcard characters.
2235 *******************************************************************/
2236
2237 BOOL ms_has_wild(char *s)
2238 {
2239         char c;
2240         while ((c = *s++)) {
2241                 switch (c) {
2242                 case '*':
2243                 case '?':
2244                 case '<':
2245                 case '>':
2246                 case '"':
2247                         return True;
2248                 }
2249         }
2250         return False;
2251 }
2252
2253 BOOL ms_has_wild_w(const smb_ucs2_t *s)
2254 {
2255         smb_ucs2_t c;
2256         if (!s) return False;
2257         while ((c = *s++)) {
2258                 switch (c) {
2259                 case UCS2_CHAR('*'):
2260                 case UCS2_CHAR('?'):
2261                 case UCS2_CHAR('<'):
2262                 case UCS2_CHAR('>'):
2263                 case UCS2_CHAR('"'):
2264                         return True;
2265                 }
2266         }
2267         return False;
2268 }
2269
2270 /*******************************************************************
2271  A wrapper that handles case sensitivity and the special handling
2272  of the ".." name.
2273 *******************************************************************/
2274
2275 BOOL mask_match(const char *string, char *pattern, BOOL is_case_sensitive)
2276 {
2277         if (strcmp(string,"..") == 0)
2278                 string = ".";
2279         if (strcmp(pattern,".") == 0)
2280                 return False;
2281
2282         return ms_fnmatch(pattern, string, Protocol, is_case_sensitive) == 0;
2283 }
2284
2285 /*********************************************************
2286  Recursive routine that is called by unix_wild_match.
2287 *********************************************************/
2288
2289 static BOOL unix_do_match(const char *regexp, const char *str)
2290 {
2291         const char *p;
2292
2293         for( p = regexp; *p && *str; ) {
2294
2295                 switch(*p) {
2296                         case '?':
2297                                 str++;
2298                                 p++;
2299                                 break;
2300
2301                         case '*':
2302
2303                                 /*
2304                                  * Look for a character matching
2305                                  * the one after the '*'.
2306                                  */
2307                                 p++;
2308                                 if(!*p)
2309                                         return True; /* Automatic match */
2310                                 while(*str) {
2311
2312                                         while(*str && (*p != *str))
2313                                                 str++;
2314
2315                                         /*
2316                                          * Patch from weidel@multichart.de. In the case of the regexp
2317                                          * '*XX*' we want to ensure there are at least 2 'X' characters
2318                                          * in the string after the '*' for a match to be made.
2319                                          */
2320
2321                                         {
2322                                                 int matchcount=0;
2323
2324                                                 /*
2325                                                  * Eat all the characters that match, but count how many there were.
2326                                                  */
2327
2328                                                 while(*str && (*p == *str)) {
2329                                                         str++;
2330                                                         matchcount++;
2331                                                 }
2332
2333                                                 /*
2334                                                  * Now check that if the regexp had n identical characters that
2335                                                  * matchcount had at least that many matches.
2336                                                  */
2337
2338                                                 while ( *(p+1) && (*(p+1) == *p)) {
2339                                                         p++;
2340                                                         matchcount--;
2341                                                 }
2342
2343                                                 if ( matchcount <= 0 )
2344                                                         return False;
2345                                         }
2346
2347                                         str--; /* We've eaten the match char after the '*' */
2348
2349                                         if(unix_do_match(p, str))
2350                                                 return True;
2351
2352                                         if(!*str)
2353                                                 return False;
2354                                         else
2355                                                 str++;
2356                                 }
2357                                 return False;
2358
2359                         default:
2360                                 if(*str != *p)
2361                                         return False;
2362                                 str++;
2363                                 p++;
2364                                 break;
2365                 }
2366         }
2367
2368         if(!*p && !*str)
2369                 return True;
2370
2371         if (!*p && str[0] == '.' && str[1] == 0)
2372                 return(True);
2373
2374         if (!*str && *p == '?') {
2375                 while (*p == '?')
2376                         p++;
2377                 return(!*p);
2378         }
2379
2380         if(!*str && (*p == '*' && p[1] == '\0'))
2381                 return True;
2382
2383         return False;
2384 }
2385
2386 /*******************************************************************
2387  Simple case insensitive interface to a UNIX wildcard matcher.
2388 *******************************************************************/
2389
2390 BOOL unix_wild_match(const char *pattern, const char *string)
2391 {
2392         pstring p2, s2;
2393         char *p;
2394
2395         pstrcpy(p2, pattern);
2396         pstrcpy(s2, string);
2397         strlower_m(p2);
2398         strlower_m(s2);
2399
2400         /* Remove any *? and ** from the pattern as they are meaningless */
2401         for(p = p2; *p; p++)
2402                 while( *p == '*' && (p[1] == '?' ||p[1] == '*'))
2403                         pstrcpy( &p[1], &p[2]);
2404
2405         if (strequal(p2,"*"))
2406                 return True;
2407
2408         return unix_do_match(p2, s2) == 0;
2409 }
2410
2411
2412 #ifdef __INSURE__
2413
2414 /*******************************************************************
2415 This routine is a trick to immediately catch errors when debugging
2416 with insure. A xterm with a gdb is popped up when insure catches
2417 a error. It is Linux specific.
2418 ********************************************************************/
2419
2420 int _Insure_trap_error(int a1, int a2, int a3, int a4, int a5, int a6)
2421 {
2422         static int (*fn)();
2423         int ret;
2424         char pidstr[10];
2425         /* you can get /usr/bin/backtrace from
2426            http://samba.org/ftp/unpacked/junkcode/backtrace */
2427         pstring cmd = "/usr/bin/backtrace %d";
2428
2429         slprintf(pidstr, sizeof(pidstr)-1, "%d", sys_getpid());
2430         pstring_sub(cmd, "%d", pidstr);
2431
2432         if (!fn) {
2433                 static void *h;
2434                 h = dlopen("/usr/local/parasoft/insure++lite/lib.linux2/libinsure.so", RTLD_LAZY);
2435                 fn = dlsym(h, "_Insure_trap_error");
2436
2437                 if (!h || h == _Insure_trap_error) {
2438                         h = dlopen("/usr/local/parasoft/lib.linux2/libinsure.so", RTLD_LAZY);
2439                         fn = dlsym(h, "_Insure_trap_error");
2440                 }
2441         }
2442
2443         ret = fn(a1, a2, a3, a4, a5, a6);
2444
2445         system(cmd);
2446
2447         return ret;
2448 }
2449 #endif