source/lib/util.c

   1 /*
   2    Unix SMB/Netbios implementation.
   3    Version 1.9.
   4    Samba utility functions
   5    Copyright (C) Andrew Tridgell 1992-1998
   6    Copyright (C) Jeremy Allison 2001
   7    Copyright (C) Simo Sorce 2001
   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 #endif /* WITH_NISPLUS_HOME */
  50 #endif /* HAVE_NETGROUP && WITH_AUTOMOUNT */
  51
  52 #ifdef WITH_SSL
  53 #include <openssl/ssl.h>
  54 #undef Realloc  /* SSLeay defines this and samba has a function of this name */
  55 extern SSL  *ssl;
  56 extern int  sslFd;
  57 #endif  /* WITH_SSL */
  58
  59 int Protocol = PROTOCOL_COREPLUS;
  60
  61 /* a default finfo structure to ensure all fields are sensible */
  62 file_info def_finfo = {-1,0,0,0,0,0,0,"",""};
  63
  64 /* this is used by the chaining code */
  65 int chain_size = 0;
  66
  67 int trans_num = 0;
  68
  69 /*
  70    case handling on filenames
  71 */
  72 int case_default = CASE_LOWER;
  73
  74 /* the following control case operations - they are put here so the
  75    client can link easily */
  76 BOOL case_sensitive;
  77 BOOL case_preserve;
  78 BOOL use_mangled_map = False;
  79 BOOL short_case_preserve;
  80 BOOL case_mangle;
  81
  82 static enum remote_arch_types ra_type = RA_UNKNOWN;
  83 pstring user_socket_options=DEFAULT_SOCKET_OPTIONS;
  84
  85 pstring global_myname = "";
  86 fstring global_myworkgroup = "";
  87 char **my_netbios_names;
  88
  89
  90 /****************************************************************************
  91  Find a suitable temporary directory. The result should be copied immediately
  92  as it may be overwritten by a subsequent call.
  93 ****************************************************************************/
  94
  95 char *tmpdir(void)
  96 {
  97         char *p;
  98         if ((p = getenv("TMPDIR")))
  99                 return p;
 100         return "/tmp";
 101 }
 102
 103 /****************************************************************************
 104  Determine whether we are in the specified group.
 105 ****************************************************************************/
 106
 107 BOOL in_group(gid_t group, gid_t current_gid, int ngroups, gid_t *groups)
 108 {
 109         int i;
 110
 111         if (group == current_gid)
 112                 return(True);
 113
 114         for (i=0;i<ngroups;i++)
 115                 if (group == groups[i])
 116                         return(True);
 117
 118         return(False);
 119 }
 120
 121 /****************************************************************************
 122  Like atoi but gets the value up to the separator character.
 123 ****************************************************************************/
 124
 125 char *Atoic(char *p, int *n, char *c)
 126 {
 127         if (!isdigit((int)*p)) {
 128                 DEBUG(5, ("Atoic: malformed number\n"));
 129                 return NULL;
 130         }
 131
 132         (*n) = atoi(p);
 133
 134         while ((*p) && isdigit((int)*p))
 135                 p++;
 136
 137         if (strchr(c, *p) == NULL) {
 138                 DEBUG(5, ("Atoic: no separator characters (%s) not found\n", c));
 139                 return NULL;
 140         }
 141
 142         return p;
 143 }
 144
 145 /*************************************************************************
 146  Reads a list of numbers.
 147  *************************************************************************/
 148
 149 char *get_numlist(char *p, uint32 **num, int *count)
 150 {
 151         int val;
 152
 153         if (num == NULL || count == NULL)
 154                 return NULL;
 155
 156         (*count) = 0;
 157         (*num  ) = NULL;
 158
 159         while ((p = Atoic(p, &val, ":,")) != NULL && (*p) != ':') {
 160                 uint32 *tn;
 161
 162                 tn = Realloc((*num), ((*count)+1) * sizeof(uint32));
 163                 if (tn == NULL)
 164                 {
 165                         SAFE_FREE(*num);
 166                         return NULL;
 167                 } else
 168                         (*num) = tn;
 169                 (*num)[(*count)] = val;
 170                 (*count)++;
 171                 p++;
 172         }
 173
 174         return p;
 175 }
 176
 177 /*******************************************************************
 178  Check if a file exists - call vfs_file_exist for samba files.
 179 ********************************************************************/
 180
 181 BOOL file_exist(char *fname,SMB_STRUCT_STAT *sbuf)
 182 {
 183         SMB_STRUCT_STAT st;
 184         if (!sbuf)
 185                 sbuf = &st;
 186
 187         if (sys_stat(fname,sbuf) != 0)
 188                 return(False);
 189
 190         return((S_ISREG(sbuf->st_mode)) || (S_ISFIFO(sbuf->st_mode)));
 191 }
 192
 193 /*******************************************************************
 194  Check a files mod time.
 195 ********************************************************************/
 196
 197 time_t file_modtime(char *fname)
 198 {
 199         SMB_STRUCT_STAT st;
 200
 201         if (sys_stat(fname,&st) != 0)
 202                 return(0);
 203
 204         return(st.st_mtime);
 205 }
 206
 207 /*******************************************************************
 208  Check if a directory exists.
 209 ********************************************************************/
 210
 211 BOOL directory_exist(char *dname,SMB_STRUCT_STAT *st)
 212 {
 213   SMB_STRUCT_STAT st2;
 214   BOOL ret;
 215
 216   if (!st) st = &st2;
 217
 218   if (sys_stat(dname,st) != 0)
 219     return(False);
 220
 221   ret = S_ISDIR(st->st_mode);
 222   if(!ret)
 223     errno = ENOTDIR;
 224   return ret;
 225 }
 226
 227 /*******************************************************************
 228 returns the size in bytes of the named file
 229 ********************************************************************/
 230 SMB_OFF_T get_file_size(char *file_name)
 231 {
 232   SMB_STRUCT_STAT buf;
 233   buf.st_size = 0;
 234   if(sys_stat(file_name,&buf) != 0)
 235     return (SMB_OFF_T)-1;
 236   return(buf.st_size);
 237 }
 238
 239 /*******************************************************************
 240 return a string representing an attribute for a file
 241 ********************************************************************/
 242 char *attrib_string(uint16 mode)
 243 {
 244   static fstring attrstr;
 245
 246   attrstr[0] = 0;
 247
 248   if (mode & aVOLID) fstrcat(attrstr,"V");
 249   if (mode & aDIR) fstrcat(attrstr,"D");
 250   if (mode & aARCH) fstrcat(attrstr,"A");
 251   if (mode & aHIDDEN) fstrcat(attrstr,"H");
 252   if (mode & aSYSTEM) fstrcat(attrstr,"S");
 253   if (mode & aRONLY) fstrcat(attrstr,"R");
 254
 255   return(attrstr);
 256 }
 257
 258 /*******************************************************************
 259   show a smb message structure
 260 ********************************************************************/
 261 void show_msg(char *buf)
 262 {
 263         int i;
 264         int bcc=0;
 265
 266         if (DEBUGLEVEL < 5) return;
 267
 268         DEBUG(5,("size=%d\nsmb_com=0x%x\nsmb_rcls=%d\nsmb_reh=%d\nsmb_err=%d\nsmb_flg=%d\nsmb_flg2=%d\n",
 269                         smb_len(buf),
 270                         (int)CVAL(buf,smb_com),
 271                         (int)CVAL(buf,smb_rcls),
 272                         (int)CVAL(buf,smb_reh),
 273                         (int)SVAL(buf,smb_err),
 274                         (int)CVAL(buf,smb_flg),
 275                         (int)SVAL(buf,smb_flg2)));
 276         DEBUG(5,("smb_tid=%d\nsmb_pid=%d\nsmb_uid=%d\nsmb_mid=%d\nsmt_wct=%d\n",
 277                         (int)SVAL(buf,smb_tid),
 278                         (int)SVAL(buf,smb_pid),
 279                         (int)SVAL(buf,smb_uid),
 280                         (int)SVAL(buf,smb_mid),
 281                         (int)CVAL(buf,smb_wct)));
 282
 283         for (i=0;i<(int)CVAL(buf,smb_wct);i++)
 284         {
 285                 DEBUG(5,("smb_vwv[%d]=%d (0x%X)\n",i,
 286                         SVAL(buf,smb_vwv+2*i),SVAL(buf,smb_vwv+2*i)));
 287         }
 288
 289         bcc = (int)SVAL(buf,smb_vwv+2*(CVAL(buf,smb_wct)));
 290
 291         DEBUG(5,("smb_bcc=%d\n",bcc));
 292
 293         if (DEBUGLEVEL < 10) return;
 294
 295         if (DEBUGLEVEL < 50)
 296         {
 297                 bcc = MIN(bcc, 512);
 298         }
 299
 300         dump_data(10, smb_buf(buf), bcc);
 301 }
 302
 303 /*******************************************************************
 304   set the length and marker of an smb packet
 305 ********************************************************************/
 306 void smb_setlen(char *buf,int len)
 307 {
 308   _smb_setlen(buf,len);
 309
 310   SCVAL(buf,4,0xFF);
 311   SCVAL(buf,5,'S');
 312   SCVAL(buf,6,'M');
 313   SCVAL(buf,7,'B');
 314 }
 315
 316 /*******************************************************************
 317   setup the word count and byte count for a smb message
 318 ********************************************************************/
 319 int set_message(char *buf,int num_words,int num_bytes,BOOL zero)
 320 {
 321         if (zero)
 322                 memset(buf + smb_size,'\0',num_words*2 + num_bytes);
 323         SCVAL(buf,smb_wct,num_words);
 324         SSVAL(buf,smb_vwv + num_words*SIZEOFWORD,num_bytes);
 325         smb_setlen(buf,smb_size + num_words*2 + num_bytes - 4);
 326         return (smb_size + num_words*2 + num_bytes);
 327 }
 328
 329 /*******************************************************************
 330   setup only the byte count for a smb message
 331 ********************************************************************/
 332 int set_message_bcc(char *buf,int num_bytes)
 333 {
 334         int num_words = CVAL(buf,smb_wct);
 335         SSVAL(buf,smb_vwv + num_words*SIZEOFWORD,num_bytes);
 336         smb_setlen(buf,smb_size + num_words*2 + num_bytes - 4);
 337         return (smb_size + num_words*2 + num_bytes);
 338 }
 339
 340 /*******************************************************************
 341   setup only the byte count for a smb message, using the end of the
 342   message as a marker
 343 ********************************************************************/
 344 int set_message_end(void *outbuf,void *end_ptr)
 345 {
 346         return set_message_bcc((char *)outbuf,PTR_DIFF(end_ptr,smb_buf((char *)outbuf)));
 347 }
 348
 349 /*******************************************************************
 350 reduce a file name, removing .. elements.
 351 ********************************************************************/
 352 void dos_clean_name(char *s)
 353 {
 354   char *p=NULL;
 355
 356   DEBUG(3,("dos_clean_name [%s]\n",s));
 357
 358   /* remove any double slashes */
 359   all_string_sub(s, "\\\\", "\\", 0);
 360
 361   while ((p = strstr(s,"\\..\\")) != NULL)
 362     {
 363       pstring s1;
 364
 365       *p = 0;
 366       pstrcpy(s1,p+3);
 367
 368       if ((p=strrchr(s,'\\')) != NULL)
 369         *p = 0;
 370       else
 371         *s = 0;
 372       pstrcat(s,s1);
 373     }
 374
 375   trim_string(s,NULL,"\\..");
 376
 377   all_string_sub(s, "\\.\\", "\\", 0);
 378 }
 379
 380 /*******************************************************************
 381 reduce a file name, removing .. elements.
 382 ********************************************************************/
 383 void unix_clean_name(char *s)
 384 {
 385   char *p=NULL;
 386
 387   DEBUG(3,("unix_clean_name [%s]\n",s));
 388
 389   /* remove any double slashes */
 390   all_string_sub(s, "//","/", 0);
 391
 392   /* Remove leading ./ characters */
 393   if(strncmp(s, "./", 2) == 0) {
 394     trim_string(s, "./", NULL);
 395     if(*s == 0)
 396       pstrcpy(s,"./");
 397   }
 398
 399   while ((p = strstr(s,"/../")) != NULL)
 400     {
 401       pstring s1;
 402
 403       *p = 0;
 404       pstrcpy(s1,p+3);
 405
 406       if ((p=strrchr(s,'/')) != NULL)
 407         *p = 0;
 408       else
 409         *s = 0;
 410       pstrcat(s,s1);
 411     }
 412
 413   trim_string(s,NULL,"/..");
 414 }
 415
 416 /****************************************************************************
 417   make a dir struct
 418 ****************************************************************************/
 419 void make_dir_struct(char *buf,char *mask,char *fname,SMB_OFF_T size,int mode,time_t date)
 420 {
 421   char *p;
 422   pstring mask2;
 423
 424   pstrcpy(mask2,mask);
 425
 426   if ((mode & aDIR) != 0)
 427     size = 0;
 428
 429   memset(buf+1,' ',11);
 430   if ((p = strchr(mask2,'.')) != NULL)
 431     {
 432       *p = 0;
 433       memcpy(buf+1,mask2,MIN(strlen(mask2),8));
 434       memcpy(buf+9,p+1,MIN(strlen(p+1),3));
 435       *p = '.';
 436     }
 437   else
 438     memcpy(buf+1,mask2,MIN(strlen(mask2),11));
 439
 440   memset(buf+21,'\0',DIR_STRUCT_SIZE-21);
 441   SCVAL(buf,21,mode);
 442   put_dos_date(buf,22,date);
 443   SSVAL(buf,26,size & 0xFFFF);
 444   SSVAL(buf,28,(size >> 16)&0xFFFF);
 445   StrnCpy(buf+30,fname,12);
 446   if (!case_sensitive)
 447     strupper(buf+30);
 448   DEBUG(8,("put name [%s] into dir struct\n",buf+30));
 449 }
 450
 451
 452 /*******************************************************************
 453 close the low 3 fd's and open dev/null in their place
 454 ********************************************************************/
 455 void close_low_fds(void)
 456 {
 457 #ifndef VALGRIND
 458   int fd;
 459   int i;
 460   close(0); close(1);
 461 #ifndef __INSURE__
 462   close(2);
 463 #endif
 464   /* try and use up these file descriptors, so silly
 465      library routines writing to stdout etc won't cause havoc */
 466   for (i=0;i<3;i++) {
 467     fd = sys_open("/dev/null",O_RDWR,0);
 468     if (fd < 0) fd = sys_open("/dev/null",O_WRONLY,0);
 469     if (fd < 0) {
 470       DEBUG(0,("Can't open /dev/null\n"));
 471       return;
 472     }
 473     if (fd != i) {
 474       DEBUG(0,("Didn't get file descriptor %d\n",i));
 475       return;
 476     }
 477   }
 478 #endif
 479 }
 480
 481 /****************************************************************************
 482 Set a fd into blocking/nonblocking mode. Uses POSIX O_NONBLOCK if available,
 483 else
 484 if SYSV use O_NDELAY
 485 if BSD use FNDELAY
 486 ****************************************************************************/
 487 int set_blocking(int fd, BOOL set)
 488 {
 489   int val;
 490 #ifdef O_NONBLOCK
 491 #define FLAG_TO_SET O_NONBLOCK
 492 #else
 493 #ifdef SYSV
 494 #define FLAG_TO_SET O_NDELAY
 495 #else /* BSD */
 496 #define FLAG_TO_SET FNDELAY
 497 #endif
 498 #endif
 499
 500   if((val = sys_fcntl_long(fd, F_GETFL, 0)) == -1)
 501         return -1;
 502   if(set) /* Turn blocking on - ie. clear nonblock flag */
 503         val &= ~FLAG_TO_SET;
 504   else
 505     val |= FLAG_TO_SET;
 506   return sys_fcntl_long( fd, F_SETFL, val);
 507 #undef FLAG_TO_SET
 508 }
 509
 510 /****************************************************************************
 511  Transfer some data between two fd's.
 512 ****************************************************************************/
 513
 514 #ifndef TRANSFER_BUF_SIZE
 515 #define TRANSFER_BUF_SIZE 65536
 516 #endif
 517
 518 ssize_t transfer_file_internal(int infd, int outfd, size_t n, ssize_t (*read_fn)(int, void *, size_t),
 519                                                 ssize_t (*write_fn)(int, const void *, size_t))
 520 {
 521         char *buf;
 522         size_t total = 0;
 523         ssize_t read_ret;
 524         ssize_t write_ret;
 525         size_t num_to_read_thistime;
 526         size_t num_written = 0;
 527
 528         if ((buf = malloc(TRANSFER_BUF_SIZE)) == NULL)
 529                 return -1;
 530
 531         while (total < n) {
 532                 num_to_read_thistime = MIN((n - total), TRANSFER_BUF_SIZE);
 533
 534                 read_ret = (*read_fn)(infd, buf, num_to_read_thistime);
 535                 if (read_ret == -1) {
 536                         DEBUG(0,("transfer_file_internal: read failure. Error = %s\n", strerror(errno) ));
 537                         SAFE_FREE(buf);
 538                         return -1;
 539                 }
 540                 if (read_ret == 0)
 541                         break;
 542
 543                 num_written = 0;
 544
 545                 while (num_written < read_ret) {
 546                         write_ret = (*write_fn)(outfd,buf + num_written, read_ret - num_written);
 547
 548                         if (write_ret == -1) {
 549                                 DEBUG(0,("transfer_file_internal: write failure. Error = %s\n", strerror(errno) ));
 550                                 SAFE_FREE(buf);
 551                                 return -1;
 552                         }
 553                         if (write_ret == 0)
 554                                 return (ssize_t)total;
 555
 556                         num_written += (size_t)write_ret;
 557                 }
 558
 559                 total += (size_t)read_ret;
 560         }
 561
 562         SAFE_FREE(buf);
 563         return (ssize_t)total;
 564 }
 565
 566 SMB_OFF_T transfer_file(int infd,int outfd,SMB_OFF_T n)
 567 {
 568         return (SMB_OFF_T)transfer_file_internal(infd, outfd, (size_t)n, sys_read, sys_write);
 569 }
 570
 571 /*******************************************************************
 572  Sleep for a specified number of milliseconds.
 573 ********************************************************************/
 574
 575 void msleep(unsigned int t)
 576 {
 577         unsigned int tdiff=0;
 578         struct timeval tval,t1,t2;
 579         fd_set fds;
 580
 581         GetTimeOfDay(&t1);
 582         GetTimeOfDay(&t2);
 583
 584         while (tdiff < t) {
 585                 tval.tv_sec = (t-tdiff)/1000;
 586                 tval.tv_usec = 1000*((t-tdiff)%1000);
 587
 588                 /* Never wait for more than 1 sec. */
 589                 if (tval.tv_sec > 1) {
 590                         tval.tv_sec = 1;
 591                         tval.tv_usec = 0;
 592                 }
 593
 594                 FD_ZERO(&fds);
 595                 errno = 0;
 596                 sys_select_intr(0,&fds,NULL,NULL,&tval);
 597
 598                 GetTimeOfDay(&t2);
 599                 if (t2.tv_sec < t1.tv_sec) {
 600                         /* Someone adjusted time... */
 601                         t1 = t2;
 602                 }
 603
 604                 tdiff = TvalDiff(&t1,&t2);
 605         }
 606 }
 607
 608 /****************************************************************************
 609  Become a daemon, discarding the controlling terminal.
 610 ****************************************************************************/
 611
 612 void become_daemon(void)
 613 {
 614         if (sys_fork()) {
 615                 _exit(0);
 616         }
 617
 618   /* detach from the terminal */
 619 #ifdef HAVE_SETSID
 620         setsid();
 621 #elif defined(TIOCNOTTY)
 622         {
 623                 int i = sys_open("/dev/tty", O_RDWR, 0);
 624                 if (i != -1) {
 625                         ioctl(i, (int) TIOCNOTTY, (char *)0);
 626                         close(i);
 627                 }
 628         }
 629 #endif /* HAVE_SETSID */
 630
 631         /* Close fd's 0,1,2. Needed if started by rsh */
 632         close_low_fds();
 633 }
 634
 635 /****************************************************************************
 636  Put up a yes/no prompt
 637 ****************************************************************************/
 638
 639 BOOL yesno(char *p)
 640 {
 641         pstring ans;
 642         printf("%s",p);
 643
 644         if (!fgets(ans,sizeof(ans)-1,stdin))
 645                 return(False);
 646
 647         if (*ans == 'y' || *ans == 'Y')
 648                 return(True);
 649
 650         return(False);
 651 }
 652
 653 /****************************************************************************
 654  Expand a pointer to be a particular size.
 655 ****************************************************************************/
 656
 657 void *Realloc(void *p,size_t size)
 658 {
 659         void *ret=NULL;
 660
 661         if (size == 0) {
 662                 SAFE_FREE(p);
 663                 DEBUG(5,("Realloc asked for 0 bytes\n"));
 664                 return NULL;
 665         }
 666
 667         if (!p)
 668                 ret = (void *)malloc(size);
 669         else
 670                 ret = (void *)realloc(p,size);
 671
 672         if (!ret)
 673                 DEBUG(0,("Memory allocation error: failed to expand to %d bytes\n",(int)size));
 674
 675         return(ret);
 676 }
 677
 678 /****************************************************************************
 679  Free memory, checks for NULL.
 680 use directly SAFE_FREE()
 681 exist only because we need to pass a function pointer somewhere --SSS
 682 ****************************************************************************/
 683
 684 void safe_free(void *p)
 685 {
 686         SAFE_FREE(p);
 687 }
 688
 689 /****************************************************************************
 690  Get my own name and IP.
 691 ****************************************************************************/
 692
 693 BOOL get_myname(char *my_name)
 694 {
 695         pstring hostname;
 696
 697         *hostname = 0;
 698
 699         /* get my host name */
 700         if (gethostname(hostname, sizeof(hostname)) == -1) {
 701                 DEBUG(0,("gethostname failed\n"));
 702                 return False;
 703         }
 704
 705         /* Ensure null termination. */
 706         hostname[sizeof(hostname)-1] = '\0';
 707
 708         if (my_name) {
 709                 /* split off any parts after an initial . */
 710                 char *p = strchr(hostname,'.');
 711                 if (p)
 712                         *p = 0;
 713
 714                 fstrcpy(my_name,hostname);
 715         }
 716
 717         return(True);
 718 }
 719
 720 /****************************************************************************
 721  Interpret a protocol description string, with a default.
 722 ****************************************************************************/
 723
 724 int interpret_protocol(char *str,int def)
 725 {
 726   if (strequal(str,"NT1"))
 727     return(PROTOCOL_NT1);
 728   if (strequal(str,"LANMAN2"))
 729     return(PROTOCOL_LANMAN2);
 730   if (strequal(str,"LANMAN1"))
 731     return(PROTOCOL_LANMAN1);
 732   if (strequal(str,"CORE"))
 733     return(PROTOCOL_CORE);
 734   if (strequal(str,"COREPLUS"))
 735     return(PROTOCOL_COREPLUS);
 736   if (strequal(str,"CORE+"))
 737     return(PROTOCOL_COREPLUS);
 738
 739   DEBUG(0,("Unrecognised protocol level %s\n",str));
 740
 741   return(def);
 742 }
 743
 744 /****************************************************************************
 745  Return true if a string could be a pure IP address.
 746 ****************************************************************************/
 747
 748 BOOL is_ipaddress(const char *str)
 749 {
 750   BOOL pure_address = True;
 751   int i;
 752
 753   for (i=0; pure_address && str[i]; i++)
 754     if (!(isdigit((int)str[i]) || str[i] == '.'))
 755       pure_address = False;
 756
 757   /* Check that a pure number is not misinterpreted as an IP */
 758   pure_address = pure_address && (strchr(str, '.') != NULL);
 759
 760   return pure_address;
 761 }
 762
 763 /****************************************************************************
 764 interpret an internet address or name into an IP address in 4 byte form
 765 ****************************************************************************/
 766
 767 uint32 interpret_addr(const char *str)
 768 {
 769   struct hostent *hp;
 770   uint32 res;
 771
 772   if (strcmp(str,"0.0.0.0") == 0) return(0);
 773   if (strcmp(str,"255.255.255.255") == 0) return(0xFFFFFFFF);
 774
 775   /* if it's in the form of an IP address then get the lib to interpret it */
 776   if (is_ipaddress(str)) {
 777     res = inet_addr(str);
 778   } else {
 779     /* otherwise assume it's a network name of some sort and use
 780        sys_gethostbyname */
 781     if ((hp = sys_gethostbyname(str)) == 0) {
 782       DEBUG(3,("sys_gethostbyname: Unknown host. %s\n",str));
 783       return 0;
 784     }
 785     if(hp->h_addr == NULL) {
 786       DEBUG(3,("sys_gethostbyname: host address is invalid for host %s\n",str));
 787       return 0;
 788     }
 789     putip((char *)&res,(char *)hp->h_addr);
 790   }
 791
 792   if (res == (uint32)-1) return(0);
 793
 794   return(res);
 795 }
 796
 797 /*******************************************************************
 798   a convenient addition to interpret_addr()
 799   ******************************************************************/
 800 struct in_addr *interpret_addr2(const char *str)
 801 {
 802   static struct in_addr ret;
 803   uint32 a = interpret_addr(str);
 804   ret.s_addr = a;
 805   return(&ret);
 806 }
 807
 808 /*******************************************************************
 809  Check if an IP is the 0.0.0.0
 810  ******************************************************************/
 811
 812 BOOL is_zero_ip(struct in_addr ip)
 813 {
 814         uint32 a;
 815         putip((char *)&a,(char *)&ip);
 816         return(a == 0);
 817 }
 818
 819 /*******************************************************************
 820  Set an IP to 0.0.0.0
 821  ******************************************************************/
 822
 823 void zero_ip(struct in_addr *ip)
 824 {
 825         static BOOL init;
 826         static struct in_addr ipzero;
 827
 828         if (!init) {
 829                 ipzero = *interpret_addr2("0.0.0.0");
 830                 init = True;
 831         }
 832
 833         *ip = ipzero;
 834 }
 835
 836 #if (defined(HAVE_NETGROUP) && defined(WITH_AUTOMOUNT))
 837 /******************************************************************
 838  Remove any mount options such as -rsize=2048,wsize=2048 etc.
 839  Based on a fix from <Thomas.Hepper@icem.de>.
 840 *******************************************************************/
 841
 842 static void strip_mount_options( pstring *str)
 843 {
 844   if (**str == '-')
 845   {
 846     char *p = *str;
 847     while(*p && !isspace(*p))
 848       p++;
 849     while(*p && isspace(*p))
 850       p++;
 851     if(*p) {
 852       pstring tmp_str;
 853
 854       pstrcpy(tmp_str, p);
 855       pstrcpy(*str, tmp_str);
 856     }
 857   }
 858 }
 859
 860 /*******************************************************************
 861  Patch from jkf@soton.ac.uk
 862  Split Luke's automount_server into YP lookup and string splitter
 863  so can easily implement automount_path().
 864  As we may end up doing both, cache the last YP result.
 865 *******************************************************************/
 866
 867 #ifdef WITH_NISPLUS_HOME
 868 char *automount_lookup(char *user_name)
 869 {
 870   static fstring last_key = "";
 871   static pstring last_value = "";
 872
 873   char *nis_map = (char *)lp_nis_home_map_name();
 874
 875   char buffer[NIS_MAXATTRVAL + 1];
 876   nis_result *result;
 877   nis_object *object;
 878   entry_obj  *entry;
 879
 880   if (strcmp(user_name, last_key))
 881   {
 882     slprintf(buffer, sizeof(buffer)-1, "[key=%s],%s", user_name, nis_map);
 883     DEBUG(5, ("NIS+ querystring: %s\n", buffer));
 884
 885     if (result = nis_list(buffer, FOLLOW_PATH|EXPAND_NAME|HARD_LOOKUP, NULL, NULL))
 886     {
 887        if (result->status != NIS_SUCCESS)
 888       {
 889         DEBUG(3, ("NIS+ query failed: %s\n", nis_sperrno(result->status)));
 890         fstrcpy(last_key, ""); pstrcpy(last_value, "");
 891       }
 892       else
 893       {
 894         object = result->objects.objects_val;
 895         if (object->zo_data.zo_type == ENTRY_OBJ)
 896         {
 897            entry = &object->zo_data.objdata_u.en_data;
 898            DEBUG(5, ("NIS+ entry type: %s\n", entry->en_type));
 899            DEBUG(3, ("NIS+ result: %s\n", entry->en_cols.en_cols_val[1].ec_value.ec_value_val));
 900
 901            pstrcpy(last_value, entry->en_cols.en_cols_val[1].ec_value.ec_value_val);
 902            pstring_sub(last_value, "&", user_name);
 903            fstrcpy(last_key, user_name);
 904         }
 905       }
 906     }
 907     nis_freeresult(result);
 908   }
 909
 910   strip_mount_options(&last_value);
 911
 912   DEBUG(4, ("NIS+ Lookup: %s resulted in %s\n", user_name, last_value));
 913   return last_value;
 914 }
 915 #else /* WITH_NISPLUS_HOME */
 916 char *automount_lookup(char *user_name)
 917 {
 918   static fstring last_key = "";
 919   static pstring last_value = "";
 920
 921   int nis_error;        /* returned by yp all functions */
 922   char *nis_result;     /* yp_match inits this */
 923   int nis_result_len;  /* and set this */
 924   char *nis_domain;     /* yp_get_default_domain inits this */
 925   char *nis_map = (char *)lp_nis_home_map_name();
 926
 927   if ((nis_error = yp_get_default_domain(&nis_domain)) != 0) {
 928     DEBUG(3, ("YP Error: %s\n", yperr_string(nis_error)));
 929     return last_value;
 930   }
 931
 932   DEBUG(5, ("NIS Domain: %s\n", nis_domain));
 933
 934   if (!strcmp(user_name, last_key)) {
 935         nis_result = last_value;
 936     nis_result_len = strlen(last_value);
 937     nis_error = 0;
 938
 939   } else {
 940
 941     if ((nis_error = yp_match(nis_domain, nis_map,
 942                               user_name, strlen(user_name),
 943                               &nis_result, &nis_result_len)) == 0) {
 944        if (!nis_error && nis_result_len >= sizeof(pstring)) {
 945                nis_result_len = sizeof(pstring)-1;
 946        }
 947        fstrcpy(last_key, user_name);
 948        strncpy(last_value, nis_result, nis_result_len);
 949        last_value[nis_result_len] = '\0';
 950         strip_mount_options(&last_value);
 951
 952     } else if(nis_error == YPERR_KEY) {
 953
 954     /* If Key lookup fails user home server is not in nis_map
 955        use default information for server, and home directory */
 956        last_value[0] = 0;
 957        DEBUG(3, ("YP Key not found:  while looking up \"%s\" in map \"%s\"\n",
 958                 user_name, nis_map));
 959        DEBUG(3, ("using defaults for server and home directory\n"));
 960     } else {
 961        DEBUG(3, ("YP Error: \"%s\" while looking up \"%s\" in map \"%s\"\n",
 962                yperr_string(nis_error), user_name, nis_map));
 963     }
 964   }
 965
 966
 967   DEBUG(4, ("YP Lookup: %s resulted in %s\n", user_name, last_value));
 968   return last_value;
 969 }
 970 #endif /* WITH_NISPLUS_HOME */
 971 #endif
 972
 973
 974 /*******************************************************************
 975 are two IPs on the same subnet?
 976 ********************************************************************/
 977 BOOL same_net(struct in_addr ip1,struct in_addr ip2,struct in_addr mask)
 978 {
 979   uint32 net1,net2,nmask;
 980
 981   nmask = ntohl(mask.s_addr);
 982   net1  = ntohl(ip1.s_addr);
 983   net2  = ntohl(ip2.s_addr);
 984
 985   return((net1 & nmask) == (net2 & nmask));
 986 }
 987
 988
 989 /****************************************************************************
 990 check if a process exists. Does this work on all unixes?
 991 ****************************************************************************/
 992
 993 BOOL process_exists(pid_t pid)
 994 {
 995         return(kill(pid,0) == 0 || errno != ESRCH);
 996 }
 997
 998
 999 /*******************************************************************
1000  Convert a uid into a user name.
1001 ********************************************************************/
1002
1003 char *uidtoname(uid_t uid)
1004 {
1005         static fstring name;
1006         struct passwd *pass;
1007
1008         if (winbind_uidtoname(name, uid))
1009                 return name;
1010
1011         pass = sys_getpwuid(uid);
1012         if (pass)
1013                 return(pass->pw_name);
1014         slprintf(name, sizeof(name) - 1, "%d",(int)uid);
1015         return(name);
1016 }
1017
1018
1019 /*******************************************************************
1020  Convert a gid into a group name.
1021 ********************************************************************/
1022
1023 char *gidtoname(gid_t gid)
1024 {
1025         static fstring name;
1026         struct group *grp;
1027
1028         if (winbind_gidtoname(name, gid))
1029                 return name;
1030
1031         grp = getgrgid(gid);
1032         if (grp)
1033                 return(grp->gr_name);
1034         slprintf(name,sizeof(name) - 1, "%d",(int)gid);
1035         return(name);
1036 }
1037
1038 /*******************************************************************
1039  Convert a user name into a uid. If winbindd is present uses this.
1040 ********************************************************************/
1041
1042 uid_t nametouid(char *name)
1043 {
1044         struct passwd *pass;
1045         char *p;
1046         uid_t u;
1047
1048         u = (uid_t)strtol(name, &p, 0);
1049         if ((p != name) && (*p == '\0'))
1050                 return u;
1051
1052         if (winbind_nametouid(&u, name))
1053                 return u;
1054
1055         pass = sys_getpwnam(name);
1056         if (pass)
1057                 return(pass->pw_uid);
1058         return (uid_t)-1;
1059 }
1060
1061 /*******************************************************************
1062  Convert a name to a gid_t if possible. Return -1 if not a group. If winbindd
1063  is present does a shortcut lookup...
1064 ********************************************************************/
1065
1066 gid_t nametogid(char *name)
1067 {
1068         struct group *grp;
1069         char *p;
1070         gid_t g;
1071
1072         g = (gid_t)strtol(name, &p, 0);
1073         if ((p != name) && (*p == '\0'))
1074                 return g;
1075
1076         if (winbind_nametogid(&g, name))
1077                 return g;
1078
1079         grp = getgrnam(name);
1080         if (grp)
1081                 return(grp->gr_gid);
1082         return (gid_t)-1;
1083 }
1084
1085 /*******************************************************************
1086 something really nasty happened - panic!
1087 ********************************************************************/
1088 void smb_panic(char *why)
1089 {
1090         char *cmd = lp_panic_action();
1091         if (cmd && *cmd) {
1092                 system(cmd);
1093         }
1094         DEBUG(0,("PANIC: %s\n", why));
1095         dbgflush();
1096         abort();
1097 }
1098
1099
1100 /*******************************************************************
1101 a readdir wrapper which just returns the file name
1102 ********************************************************************/
1103 char *readdirname(DIR *p)
1104 {
1105         SMB_STRUCT_DIRENT *ptr;
1106         char *dname;
1107
1108         if (!p) return(NULL);
1109
1110         ptr = (SMB_STRUCT_DIRENT *)sys_readdir(p);
1111         if (!ptr) return(NULL);
1112
1113         dname = ptr->d_name;
1114
1115 #ifdef NEXT2
1116         if (telldir(p) < 0) return(NULL);
1117 #endif
1118
1119 #ifdef HAVE_BROKEN_READDIR
1120         /* using /usr/ucb/cc is BAD */
1121         dname = dname - 2;
1122 #endif
1123
1124         {
1125                 static pstring buf;
1126                 int len = NAMLEN(ptr);
1127                 memcpy(buf, dname, len);
1128                 buf[len] = 0;
1129                 dname = buf;
1130         }
1131
1132         return(dname);
1133 }
1134
1135 /*******************************************************************
1136  Utility function used to decide if the last component
1137  of a path matches a (possibly wildcarded) entry in a namelist.
1138 ********************************************************************/
1139
1140 BOOL is_in_path(char *name, name_compare_entry *namelist)
1141 {
1142   pstring last_component;
1143   char *p;
1144
1145   DEBUG(8, ("is_in_path: %s\n", name));
1146
1147   /* if we have no list it's obviously not in the path */
1148   if((namelist == NULL ) || ((namelist != NULL) && (namelist[0].name == NULL)))
1149   {
1150     DEBUG(8,("is_in_path: no name list.\n"));
1151     return False;
1152   }
1153
1154   /* Get the last component of the unix name. */
1155   p = strrchr(name, '/');
1156   strncpy(last_component, p ? ++p : name, sizeof(last_component)-1);
1157   last_component[sizeof(last_component)-1] = '\0';
1158
1159   for(; namelist->name != NULL; namelist++)
1160   {
1161     if(namelist->is_wild)
1162     {
1163       if (mask_match(last_component, namelist->name, case_sensitive))
1164       {
1165          DEBUG(8,("is_in_path: mask match succeeded\n"));
1166          return True;
1167       }
1168     }
1169     else
1170     {
1171       if((case_sensitive && (strcmp(last_component, namelist->name) == 0))||
1172        (!case_sensitive && (StrCaseCmp(last_component, namelist->name) == 0)))
1173         {
1174          DEBUG(8,("is_in_path: match succeeded\n"));
1175          return True;
1176         }
1177     }
1178   }
1179   DEBUG(8,("is_in_path: match not found\n"));
1180
1181   return False;
1182 }
1183
1184 /*******************************************************************
1185  Strip a '/' separated list into an array of
1186  name_compare_enties structures suitable for
1187  passing to is_in_path(). We do this for
1188  speed so we can pre-parse all the names in the list
1189  and don't do it for each call to is_in_path().
1190  namelist is modified here and is assumed to be
1191  a copy owned by the caller.
1192  We also check if the entry contains a wildcard to
1193  remove a potentially expensive call to mask_match
1194  if possible.
1195 ********************************************************************/
1196
1197 void set_namearray(name_compare_entry **ppname_array, char *namelist)
1198 {
1199   char *name_end;
1200   char *nameptr = namelist;
1201   int num_entries = 0;
1202   int i;
1203
1204   (*ppname_array) = NULL;
1205
1206   if((nameptr == NULL ) || ((nameptr != NULL) && (*nameptr == '\0')))
1207     return;
1208
1209   /* We need to make two passes over the string. The
1210      first to count the number of elements, the second
1211      to split it.
1212    */
1213   while(*nameptr)
1214     {
1215       if ( *nameptr == '/' )
1216         {
1217           /* cope with multiple (useless) /s) */
1218           nameptr++;
1219           continue;
1220         }
1221       /* find the next / */
1222       name_end = strchr(nameptr, '/');
1223
1224       /* oops - the last check for a / didn't find one. */
1225       if (name_end == NULL)
1226         break;
1227
1228       /* next segment please */
1229       nameptr = name_end + 1;
1230       num_entries++;
1231     }
1232
1233   if(num_entries == 0)
1234     return;
1235
1236   if(( (*ppname_array) = (name_compare_entry *)malloc(
1237            (num_entries + 1) * sizeof(name_compare_entry))) == NULL)
1238         {
1239     DEBUG(0,("set_namearray: malloc fail\n"));
1240     return;
1241         }
1242
1243   /* Now copy out the names */
1244   nameptr = namelist;
1245   i = 0;
1246   while(*nameptr)
1247              {
1248       if ( *nameptr == '/' )
1249       {
1250           /* cope with multiple (useless) /s) */
1251           nameptr++;
1252           continue;
1253       }
1254       /* find the next / */
1255       if ((name_end = strchr(nameptr, '/')) != NULL)
1256       {
1257           *name_end = 0;
1258          }
1259
1260       /* oops - the last check for a / didn't find one. */
1261       if(name_end == NULL)
1262         break;
1263
1264       (*ppname_array)[i].is_wild = ms_has_wild(nameptr);
1265       if(((*ppname_array)[i].name = strdup(nameptr)) == NULL)
1266       {
1267         DEBUG(0,("set_namearray: malloc fail (1)\n"));
1268         return;
1269       }
1270
1271       /* next segment please */
1272       nameptr = name_end + 1;
1273       i++;
1274     }
1275
1276   (*ppname_array)[i].name = NULL;
1277
1278   return;
1279 }
1280
1281 /****************************************************************************
1282 routine to free a namearray.
1283 ****************************************************************************/
1284
1285 void free_namearray(name_compare_entry *name_array)
1286 {
1287   if(name_array == NULL)
1288     return;
1289
1290   SAFE_FREE(name_array->name);
1291   SAFE_FREE(name_array);
1292 }
1293
1294 /****************************************************************************
1295  Simple routine to do POSIX file locking. Cruft in NFS and 64->32 bit mapping
1296  is dealt with in posix.c
1297 ****************************************************************************/
1298
1299 BOOL fcntl_lock(int fd, int op, SMB_OFF_T offset, SMB_OFF_T count, int type)
1300 {
1301   SMB_STRUCT_FLOCK lock;
1302   int ret;
1303
1304   DEBUG(8,("fcntl_lock %d %d %.0f %.0f %d\n",fd,op,(double)offset,(double)count,type));
1305
1306   lock.l_type = type;
1307   lock.l_whence = SEEK_SET;
1308   lock.l_start = offset;
1309   lock.l_len = count;
1310   lock.l_pid = 0;
1311
1312   ret = sys_fcntl_ptr(fd,op,&lock);
1313
1314   if (ret == -1 && errno != 0)
1315     DEBUG(3,("fcntl_lock: fcntl lock gave errno %d (%s)\n",errno,strerror(errno)));
1316
1317   /* a lock query */
1318   if (op == SMB_F_GETLK)
1319   {
1320     if ((ret != -1) &&
1321         (lock.l_type != F_UNLCK) &&
1322         (lock.l_pid != 0) &&
1323         (lock.l_pid != sys_getpid()))
1324     {
1325       DEBUG(3,("fcntl_lock: fd %d is locked by pid %d\n",fd,(int)lock.l_pid));
1326       return(True);
1327     }
1328
1329     /* it must be not locked or locked by me */
1330     return(False);
1331   }
1332
1333   /* a lock set or unset */
1334   if (ret == -1)
1335   {
1336     DEBUG(3,("fcntl_lock: lock failed at offset %.0f count %.0f op %d type %d (%s)\n",
1337           (double)offset,(double)count,op,type,strerror(errno)));
1338     return(False);
1339   }
1340
1341   /* everything went OK */
1342   DEBUG(8,("fcntl_lock: Lock call successful\n"));
1343
1344   return(True);
1345 }
1346
1347 /*******************************************************************
1348 is the name specified one of my netbios names
1349 returns true is it is equal, false otherwise
1350 ********************************************************************/
1351 BOOL is_myname(char *s)
1352 {
1353   int n;
1354   BOOL ret = False;
1355
1356   for (n=0; my_netbios_names[n]; n++) {
1357     if (strequal(my_netbios_names[n], s))
1358       ret=True;
1359   }
1360   DEBUG(8, ("is_myname(\"%s\") returns %d\n", s, ret));
1361   return(ret);
1362 }
1363
1364 /********************************************************************
1365  Return only the first IP address of our configured interfaces
1366  as a string
1367  *******************************************************************/
1368
1369 const char* get_my_primary_ip (void)
1370 {
1371         static fstring ip_string;
1372         int n;
1373         struct iface_struct nics[MAX_INTERFACES];
1374
1375         if ((n=get_interfaces(nics, MAX_INTERFACES)) <= 0)
1376                 return NULL;
1377
1378         fstrcpy(ip_string, inet_ntoa(nics[0].ip));
1379         return ip_string;
1380 }
1381
1382
1383 BOOL is_myname_or_ipaddr(char *s)
1384 {
1385         char *ptr;
1386         pstring nbname;
1387
1388         /* optimize for the common case */
1389         if (strequal(s, global_myname))
1390                 return True;
1391
1392         /* maybe its an IP address? */
1393         if (is_ipaddress(s))
1394         {
1395                 struct iface_struct nics[MAX_INTERFACES];
1396                 int i, n;
1397                 uint32 ip;
1398
1399                 ip = interpret_addr(s);
1400                 if ((ip==0) || (ip==0xffffffff))
1401                         return False;
1402
1403                 n = get_interfaces(nics, MAX_INTERFACES);
1404                 for (i=0; i<n; i++) {
1405                         if (ip == nics[i].ip.s_addr)
1406                                 return True;
1407                 }
1408         }
1409
1410         /* check for an alias */
1411         ptr = lp_netbios_aliases();
1412         while ( next_token(&ptr, nbname, NULL, sizeof(nbname)) )
1413         {
1414                 if (StrCaseCmp(s, nbname) == 0)
1415                         return True;
1416         }
1417
1418
1419         /* no match */
1420         return False;
1421
1422 }
1423
1424
1425 /*******************************************************************
1426 set the horrid remote_arch string based on an enum.
1427 ********************************************************************/
1428 void set_remote_arch(enum remote_arch_types type)
1429 {
1430   extern fstring remote_arch;
1431   ra_type = type;
1432   switch( type )
1433   {
1434   case RA_WFWG:
1435     fstrcpy(remote_arch, "WfWg");
1436     return;
1437   case RA_OS2:
1438     fstrcpy(remote_arch, "OS2");
1439     return;
1440   case RA_WIN95:
1441     fstrcpy(remote_arch, "Win95");
1442     return;
1443   case RA_WINNT:
1444     fstrcpy(remote_arch, "WinNT");
1445     return;
1446   case RA_WIN2K:
1447     fstrcpy(remote_arch, "Win2K");
1448     return;
1449   case RA_SAMBA:
1450     fstrcpy(remote_arch,"Samba");
1451     return;
1452   default:
1453     ra_type = RA_UNKNOWN;
1454     fstrcpy(remote_arch, "UNKNOWN");
1455     break;
1456   }
1457 }
1458
1459 /*******************************************************************
1460  Get the remote_arch type.
1461 ********************************************************************/
1462 enum remote_arch_types get_remote_arch(void)
1463 {
1464   return ra_type;
1465 }
1466
1467
1468 void out_ascii(FILE *f, unsigned char *buf,int len)
1469 {
1470         int i;
1471         for (i=0;i<len;i++)
1472         {
1473                 fprintf(f, "%c", isprint(buf[i])?buf[i]:'.');
1474         }
1475 }
1476
1477 void out_data(FILE *f,char *buf1,int len, int per_line)
1478 {
1479         unsigned char *buf = (unsigned char *)buf1;
1480         int i=0;
1481         if (len<=0)
1482         {
1483                 return;
1484         }
1485
1486         fprintf(f, "[%03X] ",i);
1487         for (i=0;i<len;)
1488         {
1489                 fprintf(f, "%02X ",(int)buf[i]);
1490                 i++;
1491                 if (i%(per_line/2) == 0) fprintf(f, " ");
1492                 if (i%per_line == 0)
1493                 {
1494                         out_ascii(f,&buf[i-per_line  ],per_line/2); fprintf(f, " ");
1495                         out_ascii(f,&buf[i-per_line/2],per_line/2); fprintf(f, "\n");
1496                         if (i<len) fprintf(f, "[%03X] ",i);
1497                 }
1498         }
1499         if ((i%per_line) != 0)
1500         {
1501                 int n;
1502
1503                 n = per_line - (i%per_line);
1504                 fprintf(f, " ");
1505                 if (n>(per_line/2)) fprintf(f, " ");
1506                 while (n--)
1507                 {
1508                         fprintf(f, "   ");
1509                 }
1510                 n = MIN(per_line/2,i%per_line);
1511                 out_ascii(f,&buf[i-(i%per_line)],n); fprintf(f, " ");
1512                 n = (i%per_line) - n;
1513                 if (n>0) out_ascii(f,&buf[i-n],n);
1514                 fprintf(f, "\n");
1515         }
1516 }
1517
1518 void print_asc(int level, unsigned char *buf,int len)
1519 {
1520         int i;
1521         for (i=0;i<len;i++)
1522                 DEBUG(level,("%c", isprint(buf[i])?buf[i]:'.'));
1523 }
1524
1525 void dump_data(int level,char *buf1,int len)
1526 {
1527   unsigned char *buf = (unsigned char *)buf1;
1528   int i=0;
1529   if (len<=0) return;
1530
1531   DEBUG(level,("[%03X] ",i));
1532   for (i=0;i<len;) {
1533     DEBUG(level,("%02X ",(int)buf[i]));
1534     i++;
1535     if (i%8 == 0) DEBUG(level,(" "));
1536     if (i%16 == 0) {
1537       print_asc(level,&buf[i-16],8); DEBUG(level,(" "));
1538       print_asc(level,&buf[i-8],8); DEBUG(level,("\n"));
1539       if (i<len) DEBUG(level,("[%03X] ",i));
1540     }
1541   }
1542   if (i%16) {
1543     int n;
1544
1545     n = 16 - (i%16);
1546     DEBUG(level,(" "));
1547     if (n>8) DEBUG(level,(" "));
1548     while (n--) DEBUG(level,("   "));
1549
1550     n = MIN(8,i%16);
1551     print_asc(level,&buf[i-(i%16)],n); DEBUG(level,(" "));
1552     n = (i%16) - n;
1553     if (n>0) print_asc(level,&buf[i-n],n);
1554     DEBUG(level,("\n"));
1555   }
1556 }
1557
1558 char *tab_depth(int depth)
1559 {
1560         static pstring spaces;
1561         memset(spaces, ' ', depth * 4);
1562         spaces[depth * 4] = 0;
1563         return spaces;
1564 }
1565
1566 /*****************************************************************************
1567  * Provide a checksum on a string
1568  *
1569  *  Input:  s - the null-terminated character string for which the checksum
1570  *              will be calculated.
1571  *
1572  *  Output: The checksum value calculated for s.
1573  *
1574  * ****************************************************************************
1575  */
1576 int str_checksum(const char *s)
1577 {
1578         int res = 0;
1579         int c;
1580         int i=0;
1581
1582         while(*s) {
1583                 c = *s;
1584                 res ^= (c << (i % 15)) ^ (c >> (15-(i%15)));
1585                 s++;
1586                 i++;
1587         }
1588         return(res);
1589 } /* str_checksum */
1590
1591
1592
1593 /*****************************************************************
1594 zero a memory area then free it. Used to catch bugs faster
1595 *****************************************************************/
1596 void zero_free(void *p, size_t size)
1597 {
1598         memset(p, 0, size);
1599         SAFE_FREE(p);
1600 }
1601
1602
1603 /*****************************************************************
1604 set our open file limit to a requested max and return the limit
1605 *****************************************************************/
1606 int set_maxfiles(int requested_max)
1607 {
1608 #if (defined(HAVE_GETRLIMIT) && defined(RLIMIT_NOFILE))
1609         struct rlimit rlp;
1610         int saved_current_limit;
1611
1612         if(getrlimit(RLIMIT_NOFILE, &rlp)) {
1613                 DEBUG(0,("set_maxfiles: getrlimit (1) for RLIMIT_NOFILE failed with error %s\n",
1614                         strerror(errno) ));
1615                 /* just guess... */
1616                 return requested_max;
1617         }
1618
1619         /*
1620      * Set the fd limit to be real_max_open_files + MAX_OPEN_FUDGEFACTOR to
1621          * account for the extra fd we need
1622          * as well as the log files and standard
1623          * handles etc. Save the limit we want to set in case
1624          * we are running on an OS that doesn't support this limit (AIX)
1625          * which always returns RLIM_INFINITY for rlp.rlim_max.
1626          */
1627
1628         /* Try raising the hard (max) limit to the requested amount. */
1629
1630 #if defined(RLIM_INFINITY)
1631         if (rlp.rlim_max != RLIM_INFINITY) {
1632                 int orig_max = rlp.rlim_max;
1633
1634                 if ( rlp.rlim_max < requested_max )
1635                         rlp.rlim_max = requested_max;
1636
1637                 /* This failing is not an error - many systems (Linux) don't
1638                         support our default request of 10,000 open files. JRA. */
1639
1640                 if(setrlimit(RLIMIT_NOFILE, &rlp)) {
1641                         DEBUG(3,("set_maxfiles: setrlimit for RLIMIT_NOFILE for %d max files failed with error %s\n",
1642                                 (int)rlp.rlim_max, strerror(errno) ));
1643
1644                         /* Set failed - restore original value from get. */
1645                         rlp.rlim_max = orig_max;
1646                 }
1647         }
1648 #endif
1649
1650         /* Now try setting the soft (current) limit. */
1651
1652         saved_current_limit = rlp.rlim_cur = MIN(requested_max,rlp.rlim_max);
1653
1654         if(setrlimit(RLIMIT_NOFILE, &rlp)) {
1655                 DEBUG(0,("set_maxfiles: setrlimit for RLIMIT_NOFILE for %d files failed with error %s\n",
1656                         (int)rlp.rlim_cur, strerror(errno) ));
1657                 /* just guess... */
1658                 return saved_current_limit;
1659         }
1660
1661         if(getrlimit(RLIMIT_NOFILE, &rlp)) {
1662                 DEBUG(0,("set_maxfiles: getrlimit (2) for RLIMIT_NOFILE failed with error %s\n",
1663                         strerror(errno) ));
1664                 /* just guess... */
1665                 return saved_current_limit;
1666     }
1667
1668 #if defined(RLIM_INFINITY)
1669         if(rlp.rlim_cur == RLIM_INFINITY)
1670                 return saved_current_limit;
1671 #endif
1672
1673     if((int)rlp.rlim_cur > saved_current_limit)
1674                 return saved_current_limit;
1675
1676         return rlp.rlim_cur;
1677 #else /* !defined(HAVE_GETRLIMIT) || !defined(RLIMIT_NOFILE) */
1678         /*
1679          * No way to know - just guess...
1680          */
1681         return requested_max;
1682 #endif
1683 }
1684
1685 /*****************************************************************
1686  splits out the start of the key (HKLM or HKU) and the rest of the key
1687  *****************************************************************/
1688 BOOL reg_split_key(char *full_keyname, uint32 *reg_type, char *key_name)
1689 {
1690         pstring tmp;
1691
1692         if (!next_token(&full_keyname, tmp, "\\", sizeof(tmp)))
1693         {
1694                 return False;
1695         }
1696
1697         (*reg_type) = 0;
1698
1699         DEBUG(10, ("reg_split_key: hive %s\n", tmp));
1700
1701         if (strequal(tmp, "HKLM") || strequal(tmp, "HKEY_LOCAL_MACHINE"))
1702         {
1703                 (*reg_type) = HKEY_LOCAL_MACHINE;
1704         }
1705         else if (strequal(tmp, "HKU") || strequal(tmp, "HKEY_USERS"))
1706         {
1707                 (*reg_type) = HKEY_USERS;
1708         }
1709         else
1710         {
1711                 DEBUG(10,("reg_split_key: unrecognised hive key %s\n", tmp));
1712                 return False;
1713         }
1714
1715         if (next_token(NULL, tmp, "\n\r", sizeof(tmp)))
1716         {
1717                 fstrcpy(key_name, tmp);
1718         }
1719         else
1720         {
1721                 key_name[0] = 0;
1722         }
1723
1724         DEBUG(10, ("reg_split_key: name %s\n", key_name));
1725
1726         return True;
1727 }
1728
1729
1730 /*****************************************************************
1731 possibly replace mkstemp if it is broken
1732 *****************************************************************/
1733 int smb_mkstemp(char *template)
1734 {
1735 #if HAVE_SECURE_MKSTEMP
1736         return mkstemp(template);
1737 #else
1738         /* have a reasonable go at emulating it. Hope that
1739            the system mktemp() isn't completly hopeless */
1740         char *p = mktemp(template);
1741         if (!p) return -1;
1742         return open(p, O_CREAT|O_EXCL|O_RDWR, 0600);
1743 #endif
1744 }
1745
1746 /*****************************************************************
1747  malloc that aborts with smb_panic on fail or zero size.
1748  *****************************************************************/
1749
1750 void *smb_xmalloc(size_t size)
1751 {
1752         void *p;
1753         if (size == 0)
1754                 smb_panic("smb_xmalloc: called with zero size.\n");
1755         if ((p = malloc(size)) == NULL)
1756                 smb_panic("smb_xmalloc: malloc fail.\n");
1757         return p;
1758 }
1759
1760 /**
1761  Memdup with smb_panic on fail.
1762 **/
1763 void *smb_xmemdup(const void *p, size_t size)
1764 {
1765         void *p2;
1766         p2 = smb_xmalloc(size);
1767         memcpy(p2, p, size);
1768         return p2;
1769 }
1770
1771 /**
1772  strdup that aborts on malloc fail.
1773 **/
1774 char *smb_xstrdup(const char *s)
1775 {
1776         char *s1 = strdup(s);
1777         if (!s1)
1778                 smb_panic("smb_xstrdup: malloc fail\n");
1779         return s1;
1780 }
1781
1782 /*
1783   vasprintf that aborts on malloc fail
1784 */
1785 int smb_xvasprintf(char **ptr, const char *format, va_list ap)
1786 {
1787         int n;
1788         va_list ap2;
1789
1790         VA_COPY(ap2, ap);
1791
1792         n = vasprintf(ptr, format, ap2);
1793         if (n == -1 || ! *ptr) {
1794                 smb_panic("smb_xvasprintf: out of memory");
1795         }
1796         return n;
1797 }
1798
1799 /*****************************************************************
1800 like strdup but for memory
1801  *****************************************************************/
1802 void *memdup(void *p, size_t size)
1803 {
1804         void *p2;
1805         if (size == 0) return NULL;
1806         p2 = malloc(size);
1807         if (!p2) return NULL;
1808         memcpy(p2, p, size);
1809         return p2;
1810 }
1811
1812 /*****************************************************************
1813 get local hostname and cache result
1814  *****************************************************************/
1815 char *myhostname(void)
1816 {
1817         static pstring ret;
1818         if (ret[0] == 0) {
1819                 get_myname(ret);
1820         }
1821         return ret;
1822 }
1823
1824
1825 /*****************************************************************
1826 a useful function for returning a path in the Samba lock directory
1827  *****************************************************************/
1828 char *lock_path(char *name)
1829 {
1830         static pstring fname;
1831
1832         pstrcpy(fname,lp_lockdir());
1833         trim_string(fname,"","/");
1834
1835         if (!directory_exist(fname,NULL)) {
1836                 mkdir(fname,0755);
1837         }
1838
1839         pstrcat(fname,"/");
1840         pstrcat(fname,name);
1841
1842         return fname;
1843 }
1844
1845 /*****************************************************************
1846 a useful function for returning a path in the Samba pid directory
1847  *****************************************************************/
1848 char *pid_path(char *name)
1849 {
1850         static pstring fname;
1851
1852         pstrcpy(fname,lp_piddir());
1853         trim_string(fname,"","/");
1854
1855         if (!directory_exist(fname,NULL)) {
1856                 mkdir(fname,0755);
1857         }
1858
1859         pstrcat(fname,"/");
1860         pstrcat(fname,name);
1861
1862         return fname;
1863 }
1864
1865 /*******************************************************************
1866  Given a filename - get its directory name
1867  NB: Returned in static storage.  Caveats:
1868  o  Not safe in thread environment.
1869  o  Caller must not free.
1870  o  If caller wishes to preserve, they should copy.
1871 ********************************************************************/
1872
1873 char *parent_dirname(const char *path)
1874 {
1875         static pstring dirpath;
1876         char *p;
1877
1878         if (!path)
1879                 return(NULL);
1880
1881         pstrcpy(dirpath, path);
1882         p = strrchr(dirpath, '/');  /* Find final '/', if any */
1883         if (!p) {
1884                 pstrcpy(dirpath, ".");    /* No final "/", so dir is "." */
1885         } else {
1886                 if (p == dirpath)
1887                         ++p;    /* For root "/", leave "/" in place */
1888                 *p = '\0';
1889         }
1890         return dirpath;
1891 }
1892
1893
1894 /*******************************************************************
1895 determine if a pattern contains any Microsoft wildcard characters
1896  *******************************************************************/
1897 BOOL ms_has_wild(char *s)
1898 {
1899         char c;
1900         while ((c = *s++)) {
1901                 switch (c) {
1902                 case '*':
1903                 case '?':
1904                 case '<':
1905                 case '>':
1906                 case '"':
1907                         return True;
1908                 }
1909         }
1910         return False;
1911 }
1912
1913 /*******************************************************************
1914  a wrapper that handles case sensitivity and the special handling
1915    of the ".." name
1916  *******************************************************************/
1917 BOOL mask_match(char *string, char *pattern, BOOL is_case_sensitive)
1918 {
1919         fstring p2, s2;
1920         if (strcmp(string,"..") == 0) string = ".";
1921         if (strcmp(pattern,".") == 0) return False;
1922
1923         if (is_case_sensitive) {
1924                 return ms_fnmatch(pattern, string) == 0;
1925         }
1926
1927         fstrcpy(p2, pattern);
1928         fstrcpy(s2, string);
1929         strlower(p2);
1930         strlower(s2);
1931         return ms_fnmatch(p2, s2) == 0;
1932 }
1933
1934 /*********************************************************
1935  Recursive routine that is called by unix_wild_match.
1936 *********************************************************/
1937
1938 static BOOL unix_do_match(char *regexp, char *str)
1939 {
1940         char *p;
1941
1942         for( p = regexp; *p && *str; ) {
1943
1944                 switch(*p) {
1945                         case '?':
1946                                 str++;
1947                                 p++;
1948                                 break;
1949
1950                         case '*':
1951
1952                                 /*
1953                                  * Look for a character matching
1954                                  * the one after the '*'.
1955                                  */
1956                                 p++;
1957                                 if(!*p)
1958                                         return True; /* Automatic match */
1959                                 while(*str) {
1960
1961                                         while(*str && (*p != *str))
1962                                                 str++;
1963
1964                                         /*
1965                                          * Patch from weidel@multichart.de. In the case of the regexp
1966                                          * '*XX*' we want to ensure there are at least 2 'X' characters
1967                                          * in the string after the '*' for a match to be made.
1968                                          */
1969
1970                                         {
1971                                                 int matchcount=0;
1972
1973                                                 /*
1974                                                  * Eat all the characters that match, but count how many there were.
1975                                                  */
1976
1977                                                 while(*str && (*p == *str)) {
1978                                                         str++;
1979                                                         matchcount++;
1980                                                 }
1981
1982                                                 /*
1983                                                  * Now check that if the regexp had n identical characters that
1984                                                  * matchcount had at least that many matches.
1985                                                  */
1986
1987                                                 while ( *(p+1) && (*(p+1) == *p)) {
1988                                                         p++;
1989                                                         matchcount--;
1990                                                 }
1991
1992                                                 if ( matchcount <= 0 )
1993                                                         return False;
1994                                         }
1995
1996                                         str--; /* We've eaten the match char after the '*' */
1997
1998                                         if(unix_do_match(p, str))
1999                                                 return True;
2000
2001                                         if(!*str)
2002                                                 return False;
2003                                         else
2004                                                 str++;
2005                                 }
2006                                 return False;
2007
2008                         default:
2009                                 if(*str != *p)
2010                                         return False;
2011                                 str++;
2012                                 p++;
2013                                 break;
2014                 }
2015         }
2016
2017         if(!*p && !*str)
2018                 return True;
2019
2020         if (!*p && str[0] == '.' && str[1] == 0)
2021                 return(True);
2022
2023         if (!*str && *p == '?') {
2024                 while (*p == '?')
2025                         p++;
2026                 return(!*p);
2027         }
2028
2029         if(!*str && (*p == '*' && p[1] == '\0'))
2030                 return True;
2031
2032         return False;
2033 }
2034
2035 /*******************************************************************
2036  Simple case insensitive interface to a UNIX wildcard matcher.
2037 *******************************************************************/
2038
2039 BOOL unix_wild_match(char *pattern, char *string)
2040 {
2041         pstring p2, s2;
2042         char *p;
2043
2044         pstrcpy(p2, pattern);
2045         pstrcpy(s2, string);
2046         strlower(p2);
2047         strlower(s2);
2048
2049         /* Remove any *? and ** from the pattern as they are meaningless */
2050         for(p = p2; *p; p++)
2051                 while( *p == '*' && (p[1] == '?' ||p[1] == '*'))
2052                         pstrcpy( &p[1], &p[2]);
2053
2054         if (strequal(p2,"*"))
2055                 return True;
2056
2057         return unix_do_match(p2, s2) == 0;
2058 }
2059
2060 /*******************************************************************
2061  free() a data blob
2062 *******************************************************************/
2063
2064 static void free_data_blob(DATA_BLOB *d)
2065 {
2066         if ((d) && (d->free)) {
2067                 SAFE_FREE(d->data);
2068         }
2069 }
2070
2071 /*******************************************************************
2072  construct a data blob, must be freed with data_blob_free()
2073  you can pass NULL for p and get a blank data blob
2074 *******************************************************************/
2075
2076 DATA_BLOB data_blob(const void *p, size_t length)
2077 {
2078         DATA_BLOB ret;
2079
2080         if (!length) {
2081                 ZERO_STRUCT(ret);
2082                 return ret;
2083         }
2084
2085         if (p) {
2086                 ret.data = smb_xmemdup(p, length);
2087         } else {
2088                 ret.data = smb_xmalloc(length);
2089         }
2090         ret.length = length;
2091         ret.free = free_data_blob;
2092         return ret;
2093 }
2094
2095 /*******************************************************************
2096  construct a data blob, using supplied TALLOC_CTX
2097 *******************************************************************/
2098
2099 DATA_BLOB data_blob_talloc(TALLOC_CTX *mem_ctx, const void *p, size_t length)
2100 {
2101         DATA_BLOB ret;
2102
2103         if (!p || !length) {
2104                 ZERO_STRUCT(ret);
2105                 return ret;
2106         }
2107
2108         ret.data = talloc_memdup(mem_ctx, p, length);
2109         if (ret.data == NULL)
2110                 smb_panic("data_blob_talloc: talloc_memdup failed.\n");
2111
2112         ret.length = length;
2113         ret.free = NULL;
2114         return ret;
2115 }
2116
2117 /*******************************************************************
2118 free a data blob
2119 *******************************************************************/
2120 void data_blob_free(DATA_BLOB *d)
2121 {
2122         if (d) {
2123                 if (d->free) {
2124                         (d->free)(d);
2125                 }
2126                 ZERO_STRUCTP(d);
2127         }
2128 }
2129
2130 /*******************************************************************
2131 clear a DATA_BLOB's contents
2132 *******************************************************************/
2133 void data_blob_clear(DATA_BLOB *d)
2134 {
2135         if (d->data) {
2136                 memset(d->data, 0, d->length);
2137         }
2138 }
2139
2140 #ifdef __INSURE__
2141
2142 /*******************************************************************
2143 This routine is a trick to immediately catch errors when debugging
2144 with insure. A xterm with a gdb is popped up when insure catches
2145 a error. It is Linux specific.
2146 ********************************************************************/
2147 int _Insure_trap_error(int a1, int a2, int a3, int a4, int a5, int a6)
2148 {
2149         static int (*fn)();
2150         int ret;
2151         char pidstr[10];
2152         pstring cmd = "/usr/X11R6/bin/xterm -display :0 -T Panic -n Panic -e /bin/sh -c 'cat /tmp/ierrs.*.%d ; gdb /proc/%d/exe %d'";
2153
2154         slprintf(pidstr, sizeof(pidstr)-1, "%d", sys_getpid());
2155         pstring_sub(cmd, "%d", pidstr);
2156
2157         if (!fn) {
2158                 static void *h;
2159                 h = dlopen("/usr/local/parasoft/insure++lite/lib.linux2/libinsure.so", RTLD_LAZY);
2160                 fn = dlsym(h, "_Insure_trap_error");
2161         }
2162
2163         ret = fn(a1, a2, a3, a4, a5, a6);
2164
2165         system(cmd);
2166
2167         return ret;
2168 }
2169 #endif