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 Copyright (C) James Peach 2006
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 2 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with this program; if not, write to the Free Software
22 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
27 extern fstring local_machine;
28 extern char *global_clobber_region_function;
29 extern unsigned int global_clobber_region_line;
30 extern fstring remote_arch;
32 /* Max allowable allococation - 256mb - 0x10000000 */
33 #define MAX_ALLOC_SIZE (1024*1024*256)
35 #if (defined(HAVE_NETGROUP) && defined (WITH_AUTOMOUNT))
36 #ifdef WITH_NISPLUS_HOME
37 #ifdef BROKEN_NISPLUS_INCLUDE_FILES
39 * The following lines are needed due to buggy include files
40 * in Solaris 2.6 which define GROUP in both /usr/include/sys/acl.h and
41 * also in /usr/include/rpcsvc/nis.h. The definitions conflict. JRA.
42 * Also GROUP_OBJ is defined as 0x4 in /usr/include/sys/acl.h and as
43 * an enum in /usr/include/rpcsvc/nis.h.
50 #if defined(GROUP_OBJ)
54 #endif /* BROKEN_NISPLUS_INCLUDE_FILES */
56 #include <rpcsvc/nis.h>
58 #endif /* WITH_NISPLUS_HOME */
59 #endif /* HAVE_NETGROUP && WITH_AUTOMOUNT */
61 enum protocol_types Protocol = PROTOCOL_COREPLUS;
63 /* a default finfo structure to ensure all fields are sensible */
66 /* this is used by the chaining code */
71 static enum remote_arch_types ra_type = RA_UNKNOWN;
72 pstring user_socket_options=DEFAULT_SOCKET_OPTIONS;
74 /***********************************************************************
75 Definitions for all names.
76 ***********************************************************************/
78 static char *smb_myname;
79 static char *smb_myworkgroup;
80 static char *smb_scope;
81 static int smb_num_netbios_names;
82 static char **smb_my_netbios_names;
84 /***********************************************************************
85 Allocate and set myname. Ensure upper case.
86 ***********************************************************************/
88 BOOL set_global_myname(const char *myname)
90 SAFE_FREE(smb_myname);
91 smb_myname = SMB_STRDUP(myname);
94 strupper_m(smb_myname);
98 const char *global_myname(void)
103 /***********************************************************************
104 Allocate and set myworkgroup. Ensure upper case.
105 ***********************************************************************/
107 BOOL set_global_myworkgroup(const char *myworkgroup)
109 SAFE_FREE(smb_myworkgroup);
110 smb_myworkgroup = SMB_STRDUP(myworkgroup);
111 if (!smb_myworkgroup)
113 strupper_m(smb_myworkgroup);
117 const char *lp_workgroup(void)
119 return smb_myworkgroup;
122 /***********************************************************************
123 Allocate and set scope. Ensure upper case.
124 ***********************************************************************/
126 BOOL set_global_scope(const char *scope)
128 SAFE_FREE(smb_scope);
129 smb_scope = SMB_STRDUP(scope);
132 strupper_m(smb_scope);
136 /*********************************************************************
137 Ensure scope is never null string.
138 *********************************************************************/
140 const char *global_scope(void)
143 set_global_scope("");
147 static void free_netbios_names_array(void)
151 for (i = 0; i < smb_num_netbios_names; i++)
152 SAFE_FREE(smb_my_netbios_names[i]);
154 SAFE_FREE(smb_my_netbios_names);
155 smb_num_netbios_names = 0;
158 static BOOL allocate_my_netbios_names_array(size_t number)
160 free_netbios_names_array();
162 smb_num_netbios_names = number + 1;
163 smb_my_netbios_names = SMB_MALLOC_ARRAY( char *, smb_num_netbios_names );
165 if (!smb_my_netbios_names)
168 memset(smb_my_netbios_names, '\0', sizeof(char *) * smb_num_netbios_names);
172 static BOOL set_my_netbios_names(const char *name, int i)
174 SAFE_FREE(smb_my_netbios_names[i]);
176 smb_my_netbios_names[i] = SMB_STRDUP(name);
177 if (!smb_my_netbios_names[i])
179 strupper_m(smb_my_netbios_names[i]);
183 /***********************************************************************
184 Free memory allocated to global objects
185 ***********************************************************************/
187 void gfree_names(void)
189 SAFE_FREE( smb_myname );
190 SAFE_FREE( smb_myworkgroup );
191 SAFE_FREE( smb_scope );
192 free_netbios_names_array();
195 void gfree_all( void )
205 /* release the talloc null_context memory last */
206 talloc_disable_null_tracking();
209 const char *my_netbios_names(int i)
211 return smb_my_netbios_names[i];
214 BOOL set_netbios_aliases(const char **str_array)
218 /* Work out the max number of netbios aliases that we have */
219 for( namecount=0; str_array && (str_array[namecount] != NULL); namecount++ )
222 if ( global_myname() && *global_myname())
225 /* Allocate space for the netbios aliases */
226 if (!allocate_my_netbios_names_array(namecount))
229 /* Use the global_myname string first */
231 if ( global_myname() && *global_myname()) {
232 set_my_netbios_names( global_myname(), namecount );
238 for ( i = 0; str_array[i] != NULL; i++) {
240 BOOL duplicate = False;
242 /* Look for duplicates */
243 for( n=0; n<namecount; n++ ) {
244 if( strequal( str_array[i], my_netbios_names(n) ) ) {
250 if (!set_my_netbios_names(str_array[i], namecount))
259 /****************************************************************************
260 Common name initialization code.
261 ****************************************************************************/
263 BOOL init_names(void)
268 if (global_myname() == NULL || *global_myname() == '\0') {
269 if (!set_global_myname(myhostname())) {
270 DEBUG( 0, ( "init_structs: malloc fail.\n" ) );
275 if (!set_netbios_aliases(lp_netbios_aliases())) {
276 DEBUG( 0, ( "init_structs: malloc fail.\n" ) );
280 fstrcpy( local_machine, global_myname() );
281 trim_char( local_machine, ' ', ' ' );
282 p = strchr( local_machine, ' ' );
285 strlower_m( local_machine );
287 DEBUG( 5, ("Netbios name list:-\n") );
288 for( n=0; my_netbios_names(n); n++ )
289 DEBUGADD( 5, ( "my_netbios_names[%d]=\"%s\"\n", n, my_netbios_names(n) ) );
294 /**************************************************************************n
295 Find a suitable temporary directory. The result should be copied immediately
296 as it may be overwritten by a subsequent call.
297 ****************************************************************************/
299 const char *tmpdir(void)
302 if ((p = getenv("TMPDIR")))
307 /****************************************************************************
308 Add a gid to an array of gids if it's not already there.
309 ****************************************************************************/
311 BOOL add_gid_to_array_unique(TALLOC_CTX *mem_ctx, gid_t gid,
312 gid_t **gids, size_t *num_gids)
316 if ((*num_gids != 0) && (*gids == NULL)) {
318 * A former call to this routine has failed to allocate memory
323 for (i=0; i<*num_gids; i++) {
324 if ((*gids)[i] == gid) {
329 *gids = TALLOC_REALLOC_ARRAY(mem_ctx, *gids, gid_t, *num_gids+1);
335 (*gids)[*num_gids] = gid;
340 /****************************************************************************
341 Like atoi but gets the value up to the separator character.
342 ****************************************************************************/
344 static const char *Atoic(const char *p, int *n, const char *c)
346 if (!isdigit((int)*p)) {
347 DEBUG(5, ("Atoic: malformed number\n"));
353 while ((*p) && isdigit((int)*p))
356 if (strchr_m(c, *p) == NULL) {
357 DEBUG(5, ("Atoic: no separator characters (%s) not found\n", c));
364 /*************************************************************************
365 Reads a list of numbers.
366 *************************************************************************/
368 const char *get_numlist(const char *p, uint32 **num, int *count)
372 if (num == NULL || count == NULL)
378 while ((p = Atoic(p, &val, ":,")) != NULL && (*p) != ':') {
379 *num = SMB_REALLOC_ARRAY((*num), uint32, (*count)+1);
383 (*num)[(*count)] = val;
391 /*******************************************************************
392 Check if a file exists - call vfs_file_exist for samba files.
393 ********************************************************************/
395 BOOL file_exist(const char *fname,SMB_STRUCT_STAT *sbuf)
401 if (sys_stat(fname,sbuf) != 0)
404 return((S_ISREG(sbuf->st_mode)) || (S_ISFIFO(sbuf->st_mode)));
407 /*******************************************************************
408 Check a files mod time.
409 ********************************************************************/
411 time_t file_modtime(const char *fname)
415 if (sys_stat(fname,&st) != 0)
421 /*******************************************************************
422 Check if a directory exists.
423 ********************************************************************/
425 BOOL directory_exist(char *dname,SMB_STRUCT_STAT *st)
433 if (sys_stat(dname,st) != 0)
436 ret = S_ISDIR(st->st_mode);
442 /*******************************************************************
443 Returns the size in bytes of the named file.
444 ********************************************************************/
446 SMB_OFF_T get_file_size(char *file_name)
450 if(sys_stat(file_name,&buf) != 0)
451 return (SMB_OFF_T)-1;
455 /*******************************************************************
456 Return a string representing an attribute for a file.
457 ********************************************************************/
459 char *attrib_string(uint16 mode)
461 static fstring attrstr;
465 if (mode & aVOLID) fstrcat(attrstr,"V");
466 if (mode & aDIR) fstrcat(attrstr,"D");
467 if (mode & aARCH) fstrcat(attrstr,"A");
468 if (mode & aHIDDEN) fstrcat(attrstr,"H");
469 if (mode & aSYSTEM) fstrcat(attrstr,"S");
470 if (mode & aRONLY) fstrcat(attrstr,"R");
475 /*******************************************************************
476 Show a smb message structure.
477 ********************************************************************/
479 void show_msg(char *buf)
487 DEBUG(5,("size=%d\nsmb_com=0x%x\nsmb_rcls=%d\nsmb_reh=%d\nsmb_err=%d\nsmb_flg=%d\nsmb_flg2=%d\n",
489 (int)CVAL(buf,smb_com),
490 (int)CVAL(buf,smb_rcls),
491 (int)CVAL(buf,smb_reh),
492 (int)SVAL(buf,smb_err),
493 (int)CVAL(buf,smb_flg),
494 (int)SVAL(buf,smb_flg2)));
495 DEBUGADD(5,("smb_tid=%d\nsmb_pid=%d\nsmb_uid=%d\nsmb_mid=%d\n",
496 (int)SVAL(buf,smb_tid),
497 (int)SVAL(buf,smb_pid),
498 (int)SVAL(buf,smb_uid),
499 (int)SVAL(buf,smb_mid)));
500 DEBUGADD(5,("smt_wct=%d\n",(int)CVAL(buf,smb_wct)));
502 for (i=0;i<(int)CVAL(buf,smb_wct);i++)
503 DEBUGADD(5,("smb_vwv[%2d]=%5d (0x%X)\n",i,
504 SVAL(buf,smb_vwv+2*i),SVAL(buf,smb_vwv+2*i)));
506 bcc = (int)SVAL(buf,smb_vwv+2*(CVAL(buf,smb_wct)));
508 DEBUGADD(5,("smb_bcc=%d\n",bcc));
516 dump_data(10, (uint8 *)smb_buf(buf), bcc);
519 /*******************************************************************
520 Set the length and marker of an encrypted smb packet.
521 ********************************************************************/
523 void smb_set_enclen(char *buf,int len,uint16 enc_ctx_num)
525 _smb_setlen(buf,len);
529 SSVAL(buf,6,enc_ctx_num);
532 /*******************************************************************
533 Set the length and marker of an smb packet.
534 ********************************************************************/
536 void smb_setlen(char *buf,int len,const char *frombuf)
538 _smb_setlen(buf,len);
541 if (buf != frombuf) {
542 memcpy(buf+4, frombuf+4, 4);
552 /*******************************************************************
553 Setup the word count and byte count for a smb message.
554 ********************************************************************/
556 int set_message(char *buf,int num_words,int num_bytes,BOOL zero)
558 if (zero && (num_words || num_bytes)) {
559 memset(buf + smb_size,'\0',num_words*2 + num_bytes);
561 SCVAL(buf,smb_wct,num_words);
562 SSVAL(buf,smb_vwv + num_words*SIZEOFWORD,num_bytes);
563 smb_setlen(buf,smb_size + num_words*2 + num_bytes - 4, NULL);
564 return (smb_size + num_words*2 + num_bytes);
567 /*******************************************************************
568 Setup only the byte count for a smb message.
569 ********************************************************************/
571 int set_message_bcc(char *buf,int num_bytes)
573 int num_words = CVAL(buf,smb_wct);
574 SSVAL(buf,smb_vwv + num_words*SIZEOFWORD,num_bytes);
575 smb_setlen(buf,smb_size + num_words*2 + num_bytes - 4, NULL);
576 return (smb_size + num_words*2 + num_bytes);
579 /*******************************************************************
580 Setup only the byte count for a smb message, using the end of the
582 ********************************************************************/
584 int set_message_end(void *outbuf,void *end_ptr)
586 return set_message_bcc((char *)outbuf,PTR_DIFF(end_ptr,smb_buf((char *)outbuf)));
589 /*******************************************************************
590 Reduce a file name, removing .. elements.
591 ********************************************************************/
593 void dos_clean_name(char *s)
597 DEBUG(3,("dos_clean_name [%s]\n",s));
599 /* remove any double slashes */
600 all_string_sub(s, "\\\\", "\\", 0);
602 /* Remove leading .\\ characters */
603 if(strncmp(s, ".\\", 2) == 0) {
604 trim_string(s, ".\\", NULL);
609 while ((p = strstr_m(s,"\\..\\")) != NULL) {
615 if ((p=strrchr_m(s,'\\')) != NULL)
622 trim_string(s,NULL,"\\..");
623 all_string_sub(s, "\\.\\", "\\", 0);
626 /*******************************************************************
627 Reduce a file name, removing .. elements.
628 ********************************************************************/
630 void unix_clean_name(char *s)
634 DEBUG(3,("unix_clean_name [%s]\n",s));
636 /* remove any double slashes */
637 all_string_sub(s, "//","/", 0);
639 /* Remove leading ./ characters */
640 if(strncmp(s, "./", 2) == 0) {
641 trim_string(s, "./", NULL);
646 while ((p = strstr_m(s,"/../")) != NULL) {
652 if ((p=strrchr_m(s,'/')) != NULL)
659 trim_string(s,NULL,"/..");
660 all_string_sub(s, "/./", "/", 0);
663 void clean_name(char *s)
669 /*******************************************************************
670 Close the low 3 fd's and open dev/null in their place.
671 ********************************************************************/
673 void close_low_fds(BOOL stderr_too)
685 /* try and use up these file descriptors, so silly
686 library routines writing to stdout etc won't cause havoc */
688 if (i == 2 && !stderr_too)
691 fd = sys_open("/dev/null",O_RDWR,0);
693 fd = sys_open("/dev/null",O_WRONLY,0);
695 DEBUG(0,("Can't open /dev/null\n"));
699 DEBUG(0,("Didn't get file descriptor %d\n",i));
706 /*******************************************************************
707 Write data into an fd at a given offset. Ignore seek errors.
708 ********************************************************************/
710 ssize_t write_data_at_offset(int fd, const char *buffer, size_t N, SMB_OFF_T pos)
715 if (pos == (SMB_OFF_T)-1) {
716 return write_data(fd, buffer, N);
718 #if defined(HAVE_PWRITE) || defined(HAVE_PRWITE64)
720 ret = sys_pwrite(fd,buffer + total,N - total, pos);
721 if (ret == -1 && errno == ESPIPE) {
722 return write_data(fd, buffer + total,N - total);
725 DEBUG(0,("write_data_at_offset: write failure. Error = %s\n", strerror(errno) ));
734 return (ssize_t)total;
736 /* Use lseek and write_data. */
737 if (sys_lseek(fd, pos, SEEK_SET) == -1) {
738 if (errno != ESPIPE) {
742 return write_data(fd, buffer, N);
746 /****************************************************************************
747 Set a fd into blocking/nonblocking mode. Uses POSIX O_NONBLOCK if available,
751 ****************************************************************************/
753 int set_blocking(int fd, BOOL set)
757 #define FLAG_TO_SET O_NONBLOCK
760 #define FLAG_TO_SET O_NDELAY
762 #define FLAG_TO_SET FNDELAY
766 if((val = sys_fcntl_long(fd, F_GETFL, 0)) == -1)
768 if(set) /* Turn blocking on - ie. clear nonblock flag */
772 return sys_fcntl_long( fd, F_SETFL, val);
776 /****************************************************************************
777 Transfer some data between two fd's.
778 ****************************************************************************/
780 #ifndef TRANSFER_BUF_SIZE
781 #define TRANSFER_BUF_SIZE 65536
784 ssize_t transfer_file_internal(int infd, int outfd, size_t n, ssize_t (*read_fn)(int, void *, size_t),
785 ssize_t (*write_fn)(int, const void *, size_t))
791 size_t num_to_read_thistime;
792 size_t num_written = 0;
794 if ((buf = SMB_MALLOC_ARRAY(char, TRANSFER_BUF_SIZE)) == NULL)
798 num_to_read_thistime = MIN((n - total), TRANSFER_BUF_SIZE);
800 read_ret = (*read_fn)(infd, buf, num_to_read_thistime);
801 if (read_ret == -1) {
802 DEBUG(0,("transfer_file_internal: read failure. Error = %s\n", strerror(errno) ));
811 while (num_written < read_ret) {
812 write_ret = (*write_fn)(outfd,buf + num_written, read_ret - num_written);
814 if (write_ret == -1) {
815 DEBUG(0,("transfer_file_internal: write failure. Error = %s\n", strerror(errno) ));
820 return (ssize_t)total;
822 num_written += (size_t)write_ret;
825 total += (size_t)read_ret;
829 return (ssize_t)total;
832 SMB_OFF_T transfer_file(int infd,int outfd,SMB_OFF_T n)
834 return (SMB_OFF_T)transfer_file_internal(infd, outfd, (size_t)n, sys_read, sys_write);
837 /*******************************************************************
838 Sleep for a specified number of milliseconds.
839 ********************************************************************/
841 void smb_msleep(unsigned int t)
843 #if defined(HAVE_NANOSLEEP)
844 struct timespec tval;
847 tval.tv_sec = t/1000;
848 tval.tv_nsec = 1000000*(t%1000);
852 ret = nanosleep(&tval, &tval);
853 } while (ret < 0 && errno == EINTR && (tval.tv_sec > 0 || tval.tv_nsec > 0));
855 unsigned int tdiff=0;
856 struct timeval tval,t1,t2;
863 tval.tv_sec = (t-tdiff)/1000;
864 tval.tv_usec = 1000*((t-tdiff)%1000);
866 /* Never wait for more than 1 sec. */
867 if (tval.tv_sec > 1) {
874 sys_select_intr(0,&fds,NULL,NULL,&tval);
877 if (t2.tv_sec < t1.tv_sec) {
878 /* Someone adjusted time... */
882 tdiff = TvalDiff(&t1,&t2);
887 /****************************************************************************
888 Become a daemon, discarding the controlling terminal.
889 ****************************************************************************/
891 void become_daemon(BOOL Fork, BOOL no_process_group)
899 /* detach from the terminal */
901 if (!no_process_group) setsid();
902 #elif defined(TIOCNOTTY)
903 if (!no_process_group) {
904 int i = sys_open("/dev/tty", O_RDWR, 0);
906 ioctl(i, (int) TIOCNOTTY, (char *)0);
910 #endif /* HAVE_SETSID */
912 /* Close fd's 0,1,2. Needed if started by rsh */
913 close_low_fds(False); /* Don't close stderr, let the debug system
914 attach it to the logfile */
917 /****************************************************************************
918 Put up a yes/no prompt.
919 ****************************************************************************/
926 if (!fgets(ans,sizeof(ans)-1,stdin))
929 if (*ans == 'y' || *ans == 'Y')
935 #if defined(PARANOID_MALLOC_CHECKER)
937 /****************************************************************************
938 Internal malloc wrapper. Externally visible.
939 ****************************************************************************/
941 void *malloc_(size_t size)
945 #define malloc(s) __ERROR_DONT_USE_MALLOC_DIRECTLY
948 /****************************************************************************
949 Internal calloc wrapper. Not externally visible.
950 ****************************************************************************/
952 static void *calloc_(size_t count, size_t size)
955 return calloc(count, size);
956 #define calloc(n,s) __ERROR_DONT_USE_CALLOC_DIRECTLY
959 /****************************************************************************
960 Internal realloc wrapper. Not externally visible.
961 ****************************************************************************/
963 static void *realloc_(void *ptr, size_t size)
966 return realloc(ptr, size);
967 #define realloc(p,s) __ERROR_DONT_USE_RELLOC_DIRECTLY
970 #endif /* PARANOID_MALLOC_CHECKER */
972 /****************************************************************************
974 ****************************************************************************/
976 void *malloc_array(size_t el_size, unsigned int count)
978 if (count >= MAX_ALLOC_SIZE/el_size) {
982 #if defined(PARANOID_MALLOC_CHECKER)
983 return malloc_(el_size*count);
985 return malloc(el_size*count);
989 /****************************************************************************
991 ****************************************************************************/
993 void *memalign_array(size_t el_size, size_t align, unsigned int count)
995 if (count >= MAX_ALLOC_SIZE/el_size) {
999 return sys_memalign(align, el_size*count);
1002 /****************************************************************************
1004 ****************************************************************************/
1006 void *calloc_array(size_t size, size_t nmemb)
1008 if (nmemb >= MAX_ALLOC_SIZE/size) {
1011 #if defined(PARANOID_MALLOC_CHECKER)
1012 return calloc_(nmemb, size);
1014 return calloc(nmemb, size);
1018 /****************************************************************************
1019 Expand a pointer to be a particular size.
1020 Note that this version of Realloc has an extra parameter that decides
1021 whether to free the passed in storage on allocation failure or if the
1024 This is designed for use in the typical idiom of :
1026 p = SMB_REALLOC(p, size)
1031 and not to have to keep track of the old 'p' contents to free later, nor
1032 to worry if the size parameter was zero. In the case where NULL is returned
1033 we guarentee that p has been freed.
1035 If free later semantics are desired, then pass 'free_old_on_error' as False which
1036 guarentees that the old contents are not freed on error, even if size == 0. To use
1039 tmp = SMB_REALLOC_KEEP_OLD_ON_ERROR(p, size);
1047 Changes were instigated by Coverity error checking. JRA.
1048 ****************************************************************************/
1050 void *Realloc(void *p, size_t size, BOOL free_old_on_error)
1055 if (free_old_on_error) {
1058 DEBUG(2,("Realloc asked for 0 bytes\n"));
1062 #if defined(PARANOID_MALLOC_CHECKER)
1064 ret = (void *)malloc_(size);
1066 ret = (void *)realloc_(p,size);
1070 ret = (void *)malloc(size);
1072 ret = (void *)realloc(p,size);
1077 if (free_old_on_error && p) {
1080 DEBUG(0,("Memory allocation error: failed to expand to %d bytes\n",(int)size));
1086 /****************************************************************************
1088 ****************************************************************************/
1090 void *realloc_array(void *p, size_t el_size, unsigned int count, BOOL free_old_on_error)
1092 if (count >= MAX_ALLOC_SIZE/el_size) {
1093 if (free_old_on_error) {
1098 return Realloc(p, el_size*count, free_old_on_error);
1101 /****************************************************************************
1102 (Hopefully) efficient array append.
1103 ****************************************************************************/
1105 void add_to_large_array(TALLOC_CTX *mem_ctx, size_t element_size,
1106 void *element, void *_array, uint32 *num_elements,
1107 ssize_t *array_size)
1109 void **array = (void **)_array;
1111 if (*array_size < 0) {
1115 if (*array == NULL) {
1116 if (*array_size == 0) {
1120 if (*array_size >= MAX_ALLOC_SIZE/element_size) {
1124 *array = TALLOC(mem_ctx, element_size * (*array_size));
1125 if (*array == NULL) {
1130 if (*num_elements == *array_size) {
1133 if (*array_size >= MAX_ALLOC_SIZE/element_size) {
1137 *array = TALLOC_REALLOC(mem_ctx, *array,
1138 element_size * (*array_size));
1140 if (*array == NULL) {
1145 memcpy((char *)(*array) + element_size*(*num_elements),
1146 element, element_size);
1156 /****************************************************************************
1157 Free memory, checks for NULL.
1158 Use directly SAFE_FREE()
1159 Exists only because we need to pass a function pointer somewhere --SSS
1160 ****************************************************************************/
1162 void safe_free(void *p)
1167 /****************************************************************************
1168 Get my own name and IP.
1169 ****************************************************************************/
1171 BOOL get_myname(char *my_name)
1177 /* get my host name */
1178 if (gethostname(hostname, sizeof(hostname)) == -1) {
1179 DEBUG(0,("gethostname failed\n"));
1183 /* Ensure null termination. */
1184 hostname[sizeof(hostname)-1] = '\0';
1187 /* split off any parts after an initial . */
1188 char *p = strchr_m(hostname,'.');
1193 fstrcpy(my_name,hostname);
1199 /****************************************************************************
1200 Get my own canonical name, including domain.
1201 ****************************************************************************/
1203 BOOL get_mydnsfullname(fstring my_dnsname)
1205 static fstring dnshostname;
1208 if (!*dnshostname) {
1209 /* get my host name */
1210 if (gethostname(dnshostname, sizeof(dnshostname)) == -1) {
1211 *dnshostname = '\0';
1212 DEBUG(0,("gethostname failed\n"));
1216 /* Ensure null termination. */
1217 dnshostname[sizeof(dnshostname)-1] = '\0';
1219 /* Ensure we get the cannonical name. */
1220 if (!(hp = sys_gethostbyname(dnshostname))) {
1221 *dnshostname = '\0';
1224 fstrcpy(dnshostname, hp->h_name);
1226 fstrcpy(my_dnsname, dnshostname);
1230 /****************************************************************************
1231 Get my own domain name.
1232 ****************************************************************************/
1234 BOOL get_mydnsdomname(fstring my_domname)
1240 if (!get_mydnsfullname(domname)) {
1243 p = strchr_m(domname, '.');
1246 fstrcpy(my_domname, p);
1252 /****************************************************************************
1253 Interpret a protocol description string, with a default.
1254 ****************************************************************************/
1256 int interpret_protocol(const char *str,int def)
1258 if (strequal(str,"NT1"))
1259 return(PROTOCOL_NT1);
1260 if (strequal(str,"LANMAN2"))
1261 return(PROTOCOL_LANMAN2);
1262 if (strequal(str,"LANMAN1"))
1263 return(PROTOCOL_LANMAN1);
1264 if (strequal(str,"CORE"))
1265 return(PROTOCOL_CORE);
1266 if (strequal(str,"COREPLUS"))
1267 return(PROTOCOL_COREPLUS);
1268 if (strequal(str,"CORE+"))
1269 return(PROTOCOL_COREPLUS);
1271 DEBUG(0,("Unrecognised protocol level %s\n",str));
1276 /****************************************************************************
1277 Return true if a string could be a pure IP address.
1278 ****************************************************************************/
1280 BOOL is_ipaddress(const char *str)
1282 BOOL pure_address = True;
1285 for (i=0; pure_address && str[i]; i++)
1286 if (!(isdigit((int)str[i]) || str[i] == '.'))
1287 pure_address = False;
1289 /* Check that a pure number is not misinterpreted as an IP */
1290 pure_address = pure_address && (strchr_m(str, '.') != NULL);
1292 return pure_address;
1295 /****************************************************************************
1296 Interpret an internet address or name into an IP address in 4 byte form.
1297 ****************************************************************************/
1299 uint32 interpret_addr(const char *str)
1304 if (strcmp(str,"0.0.0.0") == 0)
1306 if (strcmp(str,"255.255.255.255") == 0)
1309 /* if it's in the form of an IP address then get the lib to interpret it */
1310 if (is_ipaddress(str)) {
1311 res = inet_addr(str);
1313 /* otherwise assume it's a network name of some sort and use
1314 sys_gethostbyname */
1315 if ((hp = sys_gethostbyname(str)) == 0) {
1316 DEBUG(3,("sys_gethostbyname: Unknown host. %s\n",str));
1320 if(hp->h_addr == NULL) {
1321 DEBUG(3,("sys_gethostbyname: host address is invalid for host %s\n",str));
1324 putip((char *)&res,(char *)hp->h_addr);
1327 if (res == (uint32)-1)
1333 /*******************************************************************
1334 A convenient addition to interpret_addr().
1335 ******************************************************************/
1337 struct in_addr *interpret_addr2(const char *str)
1339 static struct in_addr ret;
1340 uint32 a = interpret_addr(str);
1345 /*******************************************************************
1346 Check if an IP is the 0.0.0.0.
1347 ******************************************************************/
1349 BOOL is_zero_ip(struct in_addr ip)
1352 putip((char *)&a,(char *)&ip);
1356 /*******************************************************************
1357 Set an IP to 0.0.0.0.
1358 ******************************************************************/
1360 void zero_ip(struct in_addr *ip)
1363 static struct in_addr ipzero;
1366 ipzero = *interpret_addr2("0.0.0.0");
1373 #if (defined(HAVE_NETGROUP) && defined(WITH_AUTOMOUNT))
1374 /******************************************************************
1375 Remove any mount options such as -rsize=2048,wsize=2048 etc.
1376 Based on a fix from <Thomas.Hepper@icem.de>.
1377 *******************************************************************/
1379 static void strip_mount_options( pstring *str)
1383 while(*p && !isspace(*p))
1385 while(*p && isspace(*p))
1390 pstrcpy(tmp_str, p);
1391 pstrcpy(*str, tmp_str);
1396 /*******************************************************************
1397 Patch from jkf@soton.ac.uk
1398 Split Luke's automount_server into YP lookup and string splitter
1399 so can easily implement automount_path().
1400 As we may end up doing both, cache the last YP result.
1401 *******************************************************************/
1403 #ifdef WITH_NISPLUS_HOME
1404 char *automount_lookup(const char *user_name)
1406 static fstring last_key = "";
1407 static pstring last_value = "";
1409 char *nis_map = (char *)lp_nis_home_map_name();
1411 char buffer[NIS_MAXATTRVAL + 1];
1416 if (strcmp(user_name, last_key)) {
1417 slprintf(buffer, sizeof(buffer)-1, "[key=%s],%s", user_name, nis_map);
1418 DEBUG(5, ("NIS+ querystring: %s\n", buffer));
1420 if (result = nis_list(buffer, FOLLOW_PATH|EXPAND_NAME|HARD_LOOKUP, NULL, NULL)) {
1421 if (result->status != NIS_SUCCESS) {
1422 DEBUG(3, ("NIS+ query failed: %s\n", nis_sperrno(result->status)));
1423 fstrcpy(last_key, ""); pstrcpy(last_value, "");
1425 object = result->objects.objects_val;
1426 if (object->zo_data.zo_type == ENTRY_OBJ) {
1427 entry = &object->zo_data.objdata_u.en_data;
1428 DEBUG(5, ("NIS+ entry type: %s\n", entry->en_type));
1429 DEBUG(3, ("NIS+ result: %s\n", entry->en_cols.en_cols_val[1].ec_value.ec_value_val));
1431 pstrcpy(last_value, entry->en_cols.en_cols_val[1].ec_value.ec_value_val);
1432 pstring_sub(last_value, "&", user_name);
1433 fstrcpy(last_key, user_name);
1437 nis_freeresult(result);
1440 strip_mount_options(&last_value);
1442 DEBUG(4, ("NIS+ Lookup: %s resulted in %s\n", user_name, last_value));
1445 #else /* WITH_NISPLUS_HOME */
1447 char *automount_lookup(const char *user_name)
1449 static fstring last_key = "";
1450 static pstring last_value = "";
1452 int nis_error; /* returned by yp all functions */
1453 char *nis_result; /* yp_match inits this */
1454 int nis_result_len; /* and set this */
1455 char *nis_domain; /* yp_get_default_domain inits this */
1456 char *nis_map = (char *)lp_nis_home_map_name();
1458 if ((nis_error = yp_get_default_domain(&nis_domain)) != 0) {
1459 DEBUG(3, ("YP Error: %s\n", yperr_string(nis_error)));
1463 DEBUG(5, ("NIS Domain: %s\n", nis_domain));
1465 if (!strcmp(user_name, last_key)) {
1466 nis_result = last_value;
1467 nis_result_len = strlen(last_value);
1470 if ((nis_error = yp_match(nis_domain, nis_map, user_name, strlen(user_name),
1471 &nis_result, &nis_result_len)) == 0) {
1472 fstrcpy(last_key, user_name);
1473 pstrcpy(last_value, nis_result);
1474 strip_mount_options(&last_value);
1476 } else if(nis_error == YPERR_KEY) {
1478 /* If Key lookup fails user home server is not in nis_map
1479 use default information for server, and home directory */
1481 DEBUG(3, ("YP Key not found: while looking up \"%s\" in map \"%s\"\n",
1482 user_name, nis_map));
1483 DEBUG(3, ("using defaults for server and home directory\n"));
1485 DEBUG(3, ("YP Error: \"%s\" while looking up \"%s\" in map \"%s\"\n",
1486 yperr_string(nis_error), user_name, nis_map));
1490 DEBUG(4, ("YP Lookup: %s resulted in %s\n", user_name, last_value));
1493 #endif /* WITH_NISPLUS_HOME */
1496 /*******************************************************************
1497 Are two IPs on the same subnet?
1498 ********************************************************************/
1500 BOOL same_net(struct in_addr ip1,struct in_addr ip2,struct in_addr mask)
1502 uint32 net1,net2,nmask;
1504 nmask = ntohl(mask.s_addr);
1505 net1 = ntohl(ip1.s_addr);
1506 net2 = ntohl(ip2.s_addr);
1508 return((net1 & nmask) == (net2 & nmask));
1512 /****************************************************************************
1513 Check if a process exists. Does this work on all unixes?
1514 ****************************************************************************/
1516 BOOL process_exists(const struct process_id pid)
1518 if (procid_is_me(&pid)) {
1522 if (!procid_is_local(&pid)) {
1523 /* This *SEVERELY* needs fixing. */
1527 /* Doing kill with a non-positive pid causes messages to be
1528 * sent to places we don't want. */
1529 SMB_ASSERT(pid.pid > 0);
1530 return(kill(pid.pid,0) == 0 || errno != ESRCH);
1533 BOOL process_exists_by_pid(pid_t pid)
1535 return process_exists(pid_to_procid(pid));
1538 /*******************************************************************
1539 Convert a uid into a user name.
1540 ********************************************************************/
1542 const char *uidtoname(uid_t uid)
1544 static fstring name;
1545 struct passwd *pass;
1547 pass = getpwuid_alloc(NULL, uid);
1549 fstrcpy(name, pass->pw_name);
1552 slprintf(name, sizeof(name) - 1, "%ld",(long int)uid);
1558 /*******************************************************************
1559 Convert a gid into a group name.
1560 ********************************************************************/
1562 char *gidtoname(gid_t gid)
1564 static fstring name;
1567 grp = getgrgid(gid);
1569 return(grp->gr_name);
1570 slprintf(name,sizeof(name) - 1, "%d",(int)gid);
1574 /*******************************************************************
1575 Convert a user name into a uid.
1576 ********************************************************************/
1578 uid_t nametouid(const char *name)
1580 struct passwd *pass;
1584 pass = getpwnam_alloc(NULL, name);
1591 u = (uid_t)strtol(name, &p, 0);
1592 if ((p != name) && (*p == '\0'))
1598 /*******************************************************************
1599 Convert a name to a gid_t if possible. Return -1 if not a group.
1600 ********************************************************************/
1602 gid_t nametogid(const char *name)
1608 g = (gid_t)strtol(name, &p, 0);
1609 if ((p != name) && (*p == '\0'))
1612 grp = sys_getgrnam(name);
1614 return(grp->gr_gid);
1618 /*******************************************************************
1619 Something really nasty happened - panic !
1620 ********************************************************************/
1622 void smb_panic(const char *const why)
1630 if (global_clobber_region_function) {
1631 DEBUG(0,("smb_panic: clobber_region() last called from [%s(%u)]\n",
1632 global_clobber_region_function,
1633 global_clobber_region_line));
1638 DEBUG(0,("PANIC (pid %llu): %s\n",
1639 (unsigned long long)sys_getpid(), why));
1642 cmd = lp_panic_action();
1644 DEBUG(0, ("smb_panic(): calling panic action [%s]\n", cmd));
1645 result = system(cmd);
1648 DEBUG(0, ("smb_panic(): fork failed in panic action: %s\n",
1651 DEBUG(0, ("smb_panic(): action returned status %d\n",
1652 WEXITSTATUS(result)));
1658 /*******************************************************************
1659 Print a backtrace of the stack to the debug log. This function
1660 DELIBERATELY LEAKS MEMORY. The expectation is that you should
1661 exit shortly after calling it.
1662 ********************************************************************/
1664 #ifdef HAVE_LIBUNWIND_H
1665 #include <libunwind.h>
1668 #ifdef HAVE_EXECINFO_H
1669 #include <execinfo.h>
1672 #ifdef HAVE_LIBEXC_H
1676 void log_stack_trace(void)
1678 #ifdef HAVE_LIBUNWIND
1679 /* Try to use libunwind before any other technique since on ia64
1680 * libunwind correctly walks the stack in more circumstances than
1683 unw_cursor_t cursor;
1688 unw_word_t ip, sp, off;
1690 procname[sizeof(procname) - 1] = '\0';
1692 if (unw_getcontext(&uc) != 0) {
1693 goto libunwind_failed;
1696 if (unw_init_local(&cursor, &uc) != 0) {
1697 goto libunwind_failed;
1700 DEBUG(0, ("BACKTRACE:\n"));
1704 unw_get_reg(&cursor, UNW_REG_IP, &ip);
1705 unw_get_reg(&cursor, UNW_REG_SP, &sp);
1707 switch (unw_get_proc_name(&cursor,
1708 procname, sizeof(procname) - 1, &off) ) {
1712 /* Name truncated. */
1713 DEBUGADD(0, (" #%u %s + %#llx [ip=%#llx] [sp=%#llx]\n",
1714 i, procname, (long long)off,
1715 (long long)ip, (long long) sp));
1718 /* case -UNW_ENOINFO: */
1719 /* case -UNW_EUNSPEC: */
1720 /* No symbol name found. */
1721 DEBUGADD(0, (" #%u %s [ip=%#llx] [sp=%#llx]\n",
1722 i, "<unknown symbol>",
1723 (long long)ip, (long long) sp));
1726 } while (unw_step(&cursor) > 0);
1731 DEBUG(0, ("unable to produce a stack trace with libunwind\n"));
1733 #elif HAVE_BACKTRACE_SYMBOLS
1734 void *backtrace_stack[BACKTRACE_STACK_SIZE];
1735 size_t backtrace_size;
1736 char **backtrace_strings;
1738 /* get the backtrace (stack frames) */
1739 backtrace_size = backtrace(backtrace_stack,BACKTRACE_STACK_SIZE);
1740 backtrace_strings = backtrace_symbols(backtrace_stack, backtrace_size);
1742 DEBUG(0, ("BACKTRACE: %lu stack frames:\n",
1743 (unsigned long)backtrace_size));
1745 if (backtrace_strings) {
1748 for (i = 0; i < backtrace_size; i++)
1749 DEBUGADD(0, (" #%u %s\n", i, backtrace_strings[i]));
1751 /* Leak the backtrace_strings, rather than risk what free() might do */
1756 /* The IRIX libexc library provides an API for unwinding the stack. See
1757 * libexc(3) for details. Apparantly trace_back_stack leaks memory, but
1758 * since we are about to abort anyway, it hardly matters.
1761 #define NAMESIZE 32 /* Arbitrary */
1763 __uint64_t addrs[BACKTRACE_STACK_SIZE];
1764 char * names[BACKTRACE_STACK_SIZE];
1765 char namebuf[BACKTRACE_STACK_SIZE * NAMESIZE];
1772 ZERO_ARRAY(namebuf);
1774 /* We need to be root so we can open our /proc entry to walk
1775 * our stack. It also helps when we want to dump core.
1779 for (i = 0; i < BACKTRACE_STACK_SIZE; i++) {
1780 names[i] = namebuf + (i * NAMESIZE);
1783 levels = trace_back_stack(0, addrs, names,
1784 BACKTRACE_STACK_SIZE, NAMESIZE - 1);
1786 DEBUG(0, ("BACKTRACE: %d stack frames:\n", levels));
1787 for (i = 0; i < levels; i++) {
1788 DEBUGADD(0, (" #%d 0x%llx %s\n", i, addrs[i], names[i]));
1793 DEBUG(0, ("unable to produce a stack trace on this platform\n"));
1797 /*******************************************************************
1798 A readdir wrapper which just returns the file name.
1799 ********************************************************************/
1801 const char *readdirname(SMB_STRUCT_DIR *p)
1803 SMB_STRUCT_DIRENT *ptr;
1809 ptr = (SMB_STRUCT_DIRENT *)sys_readdir(p);
1813 dname = ptr->d_name;
1820 #ifdef HAVE_BROKEN_READDIR_NAME
1821 /* using /usr/ucb/cc is BAD */
1827 int len = NAMLEN(ptr);
1828 memcpy(buf, dname, len);
1836 /*******************************************************************
1837 Utility function used to decide if the last component
1838 of a path matches a (possibly wildcarded) entry in a namelist.
1839 ********************************************************************/
1841 BOOL is_in_path(const char *name, name_compare_entry *namelist, BOOL case_sensitive)
1843 pstring last_component;
1846 /* if we have no list it's obviously not in the path */
1847 if((namelist == NULL ) || ((namelist != NULL) && (namelist[0].name == NULL))) {
1851 DEBUG(8, ("is_in_path: %s\n", name));
1853 /* Get the last component of the unix name. */
1854 p = strrchr_m(name, '/');
1855 pstrcpy(last_component, p ? ++p : name);
1857 for(; namelist->name != NULL; namelist++) {
1858 if(namelist->is_wild) {
1859 if (mask_match(last_component, namelist->name, case_sensitive)) {
1860 DEBUG(8,("is_in_path: mask match succeeded\n"));
1864 if((case_sensitive && (strcmp(last_component, namelist->name) == 0))||
1865 (!case_sensitive && (StrCaseCmp(last_component, namelist->name) == 0))) {
1866 DEBUG(8,("is_in_path: match succeeded\n"));
1871 DEBUG(8,("is_in_path: match not found\n"));
1876 /*******************************************************************
1877 Strip a '/' separated list into an array of
1878 name_compare_enties structures suitable for
1879 passing to is_in_path(). We do this for
1880 speed so we can pre-parse all the names in the list
1881 and don't do it for each call to is_in_path().
1882 namelist is modified here and is assumed to be
1883 a copy owned by the caller.
1884 We also check if the entry contains a wildcard to
1885 remove a potentially expensive call to mask_match
1887 ********************************************************************/
1889 void set_namearray(name_compare_entry **ppname_array, char *namelist)
1892 char *nameptr = namelist;
1893 int num_entries = 0;
1896 (*ppname_array) = NULL;
1898 if((nameptr == NULL ) || ((nameptr != NULL) && (*nameptr == '\0')))
1901 /* We need to make two passes over the string. The
1902 first to count the number of elements, the second
1907 if ( *nameptr == '/' ) {
1908 /* cope with multiple (useless) /s) */
1912 /* find the next / */
1913 name_end = strchr_m(nameptr, '/');
1915 /* oops - the last check for a / didn't find one. */
1916 if (name_end == NULL)
1919 /* next segment please */
1920 nameptr = name_end + 1;
1924 if(num_entries == 0)
1927 if(( (*ppname_array) = SMB_MALLOC_ARRAY(name_compare_entry, num_entries + 1)) == NULL) {
1928 DEBUG(0,("set_namearray: malloc fail\n"));
1932 /* Now copy out the names */
1936 if ( *nameptr == '/' ) {
1937 /* cope with multiple (useless) /s) */
1941 /* find the next / */
1942 if ((name_end = strchr_m(nameptr, '/')) != NULL)
1945 /* oops - the last check for a / didn't find one. */
1946 if(name_end == NULL)
1949 (*ppname_array)[i].is_wild = ms_has_wild(nameptr);
1950 if(((*ppname_array)[i].name = SMB_STRDUP(nameptr)) == NULL) {
1951 DEBUG(0,("set_namearray: malloc fail (1)\n"));
1955 /* next segment please */
1956 nameptr = name_end + 1;
1960 (*ppname_array)[i].name = NULL;
1965 /****************************************************************************
1966 Routine to free a namearray.
1967 ****************************************************************************/
1969 void free_namearray(name_compare_entry *name_array)
1973 if(name_array == NULL)
1976 for(i=0; name_array[i].name!=NULL; i++)
1977 SAFE_FREE(name_array[i].name);
1978 SAFE_FREE(name_array);
1982 #define DBGC_CLASS DBGC_LOCKING
1984 /****************************************************************************
1985 Simple routine to do POSIX file locking. Cruft in NFS and 64->32 bit mapping
1986 is dealt with in posix.c
1987 Returns True if the lock was granted, False otherwise.
1988 ****************************************************************************/
1990 BOOL fcntl_lock(int fd, int op, SMB_OFF_T offset, SMB_OFF_T count, int type)
1992 SMB_STRUCT_FLOCK lock;
1995 DEBUG(8,("fcntl_lock fd=%d op=%d offset=%.0f count=%.0f type=%d\n",
1996 fd,op,(double)offset,(double)count,type));
1999 lock.l_whence = SEEK_SET;
2000 lock.l_start = offset;
2004 ret = sys_fcntl_ptr(fd,op,&lock);
2008 DEBUG(3,("fcntl_lock: lock failed at offset %.0f count %.0f op %d type %d (%s)\n",
2009 (double)offset,(double)count,op,type,strerror(errno)));
2014 /* everything went OK */
2015 DEBUG(8,("fcntl_lock: Lock call successful\n"));
2020 /****************************************************************************
2021 Simple routine to query existing file locks. Cruft in NFS and 64->32 bit mapping
2022 is dealt with in posix.c
2023 Returns True if we have information regarding this lock region (and returns
2024 F_UNLCK in *ptype if the region is unlocked). False if the call failed.
2025 ****************************************************************************/
2027 BOOL fcntl_getlock(int fd, SMB_OFF_T *poffset, SMB_OFF_T *pcount, int *ptype, pid_t *ppid)
2029 SMB_STRUCT_FLOCK lock;
2032 DEBUG(8,("fcntl_getlock fd=%d offset=%.0f count=%.0f type=%d\n",
2033 fd,(double)*poffset,(double)*pcount,*ptype));
2035 lock.l_type = *ptype;
2036 lock.l_whence = SEEK_SET;
2037 lock.l_start = *poffset;
2038 lock.l_len = *pcount;
2041 ret = sys_fcntl_ptr(fd,SMB_F_GETLK,&lock);
2045 DEBUG(3,("fcntl_getlock: lock request failed at offset %.0f count %.0f type %d (%s)\n",
2046 (double)*poffset,(double)*pcount,*ptype,strerror(errno)));
2051 *ptype = lock.l_type;
2052 *poffset = lock.l_start;
2053 *pcount = lock.l_len;
2056 DEBUG(3,("fcntl_getlock: fd %d is returned info %d pid %u\n",
2057 fd, (int)lock.l_type, (unsigned int)lock.l_pid));
2062 #define DBGC_CLASS DBGC_ALL
2064 /*******************************************************************
2065 Is the name specified one of my netbios names.
2066 Returns true if it is equal, false otherwise.
2067 ********************************************************************/
2069 BOOL is_myname(const char *s)
2074 for (n=0; my_netbios_names(n); n++) {
2075 if (strequal(my_netbios_names(n), s)) {
2080 DEBUG(8, ("is_myname(\"%s\") returns %d\n", s, ret));
2084 BOOL is_myname_or_ipaddr(const char *s)
2086 fstring name, dnsname;
2092 /* santize the string from '\\name' */
2096 servername = strrchr_m( name, '\\' );
2102 /* optimize for the common case */
2104 if (strequal(servername, global_myname()))
2107 /* check for an alias */
2109 if (is_myname(servername))
2112 /* check for loopback */
2114 if (strequal(servername, "127.0.0.1"))
2117 if (strequal(servername, "localhost"))
2120 /* maybe it's my dns name */
2122 if ( get_mydnsfullname( dnsname ) )
2123 if ( strequal( servername, dnsname ) )
2126 /* handle possible CNAME records */
2128 if ( !is_ipaddress( servername ) ) {
2129 /* use DNS to resolve the name, but only the first address */
2132 if (((hp = sys_gethostbyname(name)) != NULL) && (hp->h_addr != NULL)) {
2133 struct in_addr return_ip;
2134 putip( (char*)&return_ip, (char*)hp->h_addr );
2135 fstrcpy( name, inet_ntoa( return_ip ) );
2140 /* maybe its an IP address? */
2141 if (is_ipaddress(servername)) {
2142 struct iface_struct nics[MAX_INTERFACES];
2146 ip = interpret_addr(servername);
2147 if ((ip==0) || (ip==0xffffffff))
2150 n = get_interfaces(nics, MAX_INTERFACES);
2151 for (i=0; i<n; i++) {
2152 if (ip == nics[i].ip.s_addr)
2161 /*******************************************************************
2162 Is the name specified our workgroup/domain.
2163 Returns true if it is equal, false otherwise.
2164 ********************************************************************/
2166 BOOL is_myworkgroup(const char *s)
2170 if (strequal(s, lp_workgroup())) {
2174 DEBUG(8, ("is_myworkgroup(\"%s\") returns %d\n", s, ret));
2178 /*******************************************************************
2179 we distinguish between 2K and XP by the "Native Lan Manager" string
2180 WinXP => "Windows 2002 5.1"
2181 WinXP 64bit => "Windows XP 5.2"
2182 Win2k => "Windows 2000 5.0"
2183 NT4 => "Windows NT 4.0"
2184 Win9x => "Windows 4.0"
2185 Windows 2003 doesn't set the native lan manager string but
2186 they do set the domain to "Windows 2003 5.2" (probably a bug).
2187 ********************************************************************/
2189 void ra_lanman_string( const char *native_lanman )
2191 if ( strcmp( native_lanman, "Windows 2002 5.1" ) == 0 )
2192 set_remote_arch( RA_WINXP );
2193 else if ( strcmp( native_lanman, "Windows XP 5.2" ) == 0 )
2194 set_remote_arch( RA_WINXP );
2195 else if ( strcmp( native_lanman, "Windows Server 2003 5.2" ) == 0 )
2196 set_remote_arch( RA_WIN2K3 );
2199 /*******************************************************************
2200 Set the horrid remote_arch string based on an enum.
2201 ********************************************************************/
2203 void set_remote_arch(enum remote_arch_types type)
2208 fstrcpy(remote_arch, "WfWg");
2211 fstrcpy(remote_arch, "OS2");
2214 fstrcpy(remote_arch, "Win95");
2217 fstrcpy(remote_arch, "WinNT");
2220 fstrcpy(remote_arch, "Win2K");
2223 fstrcpy(remote_arch, "WinXP");
2226 fstrcpy(remote_arch, "Win2K3");
2229 fstrcpy(remote_arch, "Vista");
2232 fstrcpy(remote_arch,"Samba");
2235 fstrcpy(remote_arch,"CIFSFS");
2238 ra_type = RA_UNKNOWN;
2239 fstrcpy(remote_arch, "UNKNOWN");
2243 DEBUG(10,("set_remote_arch: Client arch is \'%s\'\n", remote_arch));
2246 /*******************************************************************
2247 Get the remote_arch type.
2248 ********************************************************************/
2250 enum remote_arch_types get_remote_arch(void)
2255 void print_asc(int level, const unsigned char *buf,int len)
2259 DEBUG(level,("%c", isprint(buf[i])?buf[i]:'.'));
2262 void dump_data(int level, const unsigned char *buf,int len)
2267 if (!DEBUGLVL(level)) return;
2269 DEBUGADD(level,("[%03X] ",i));
2271 DEBUGADD(level,("%02X ",(int)buf[i]));
2273 if (i%8 == 0) DEBUGADD(level,(" "));
2275 print_asc(level,&buf[i-16],8); DEBUGADD(level,(" "));
2276 print_asc(level,&buf[i-8],8); DEBUGADD(level,("\n"));
2277 if (i<len) DEBUGADD(level,("[%03X] ",i));
2283 DEBUGADD(level,(" "));
2284 if (n>8) DEBUGADD(level,(" "));
2285 while (n--) DEBUGADD(level,(" "));
2287 print_asc(level,&buf[i-(i%16)],n); DEBUGADD(level,( " " ));
2289 if (n>0) print_asc(level,&buf[i-n],n);
2290 DEBUGADD(level,("\n"));
2294 void dump_data_pw(const char *msg, const uchar * data, size_t len)
2296 #ifdef DEBUG_PASSWORD
2297 DEBUG(11, ("%s", msg));
2298 if (data != NULL && len > 0)
2300 dump_data(11, data, len);
2305 char *tab_depth(int depth)
2307 static pstring spaces;
2308 memset(spaces, ' ', depth * 4);
2309 spaces[depth * 4] = 0;
2313 /*****************************************************************************
2314 Provide a checksum on a string
2316 Input: s - the null-terminated character string for which the checksum
2319 Output: The checksum value calculated for s.
2320 *****************************************************************************/
2322 int str_checksum(const char *s)
2330 res ^= (c << (i % 15)) ^ (c >> (15-(i%15)));
2337 /*****************************************************************
2338 Zero a memory area then free it. Used to catch bugs faster.
2339 *****************************************************************/
2341 void zero_free(void *p, size_t size)
2347 /*****************************************************************
2348 Set our open file limit to a requested max and return the limit.
2349 *****************************************************************/
2351 int set_maxfiles(int requested_max)
2353 #if (defined(HAVE_GETRLIMIT) && defined(RLIMIT_NOFILE))
2355 int saved_current_limit;
2357 if(getrlimit(RLIMIT_NOFILE, &rlp)) {
2358 DEBUG(0,("set_maxfiles: getrlimit (1) for RLIMIT_NOFILE failed with error %s\n",
2361 return requested_max;
2365 * Set the fd limit to be real_max_open_files + MAX_OPEN_FUDGEFACTOR to
2366 * account for the extra fd we need
2367 * as well as the log files and standard
2368 * handles etc. Save the limit we want to set in case
2369 * we are running on an OS that doesn't support this limit (AIX)
2370 * which always returns RLIM_INFINITY for rlp.rlim_max.
2373 /* Try raising the hard (max) limit to the requested amount. */
2375 #if defined(RLIM_INFINITY)
2376 if (rlp.rlim_max != RLIM_INFINITY) {
2377 int orig_max = rlp.rlim_max;
2379 if ( rlp.rlim_max < requested_max )
2380 rlp.rlim_max = requested_max;
2382 /* This failing is not an error - many systems (Linux) don't
2383 support our default request of 10,000 open files. JRA. */
2385 if(setrlimit(RLIMIT_NOFILE, &rlp)) {
2386 DEBUG(3,("set_maxfiles: setrlimit for RLIMIT_NOFILE for %d max files failed with error %s\n",
2387 (int)rlp.rlim_max, strerror(errno) ));
2389 /* Set failed - restore original value from get. */
2390 rlp.rlim_max = orig_max;
2395 /* Now try setting the soft (current) limit. */
2397 saved_current_limit = rlp.rlim_cur = MIN(requested_max,rlp.rlim_max);
2399 if(setrlimit(RLIMIT_NOFILE, &rlp)) {
2400 DEBUG(0,("set_maxfiles: setrlimit for RLIMIT_NOFILE for %d files failed with error %s\n",
2401 (int)rlp.rlim_cur, strerror(errno) ));
2403 return saved_current_limit;
2406 if(getrlimit(RLIMIT_NOFILE, &rlp)) {
2407 DEBUG(0,("set_maxfiles: getrlimit (2) for RLIMIT_NOFILE failed with error %s\n",
2410 return saved_current_limit;
2413 #if defined(RLIM_INFINITY)
2414 if(rlp.rlim_cur == RLIM_INFINITY)
2415 return saved_current_limit;
2418 if((int)rlp.rlim_cur > saved_current_limit)
2419 return saved_current_limit;
2421 return rlp.rlim_cur;
2422 #else /* !defined(HAVE_GETRLIMIT) || !defined(RLIMIT_NOFILE) */
2424 * No way to know - just guess...
2426 return requested_max;
2430 /*****************************************************************
2431 Possibly replace mkstemp if it is broken.
2432 *****************************************************************/
2434 int smb_mkstemp(char *name_template)
2436 #if HAVE_SECURE_MKSTEMP
2437 return mkstemp(name_template);
2439 /* have a reasonable go at emulating it. Hope that
2440 the system mktemp() isn't completly hopeless */
2441 char *p = mktemp(name_template);
2444 return open(p, O_CREAT|O_EXCL|O_RDWR, 0600);
2448 /*****************************************************************
2449 malloc that aborts with smb_panic on fail or zero size.
2450 *****************************************************************/
2452 void *smb_xmalloc_array(size_t size, unsigned int count)
2456 smb_panic("smb_xmalloc_array: called with zero size.\n");
2457 if (count >= MAX_ALLOC_SIZE/size) {
2458 smb_panic("smb_xmalloc: alloc size too large.\n");
2460 if ((p = SMB_MALLOC(size*count)) == NULL) {
2461 DEBUG(0, ("smb_xmalloc_array failed to allocate %lu * %lu bytes\n",
2462 (unsigned long)size, (unsigned long)count));
2463 smb_panic("smb_xmalloc_array: malloc fail.\n");
2469 Memdup with smb_panic on fail.
2472 void *smb_xmemdup(const void *p, size_t size)
2475 p2 = SMB_XMALLOC_ARRAY(unsigned char,size);
2476 memcpy(p2, p, size);
2481 strdup that aborts on malloc fail.
2484 char *smb_xstrdup(const char *s)
2486 #if defined(PARANOID_MALLOC_CHECKER)
2493 #define strdup rep_strdup
2496 char *s1 = strdup(s);
2497 #if defined(PARANOID_MALLOC_CHECKER)
2501 #define strdup(s) __ERROR_DONT_USE_STRDUP_DIRECTLY
2504 smb_panic("smb_xstrdup: malloc fail\n");
2510 strndup that aborts on malloc fail.
2513 char *smb_xstrndup(const char *s, size_t n)
2515 #if defined(PARANOID_MALLOC_CHECKER)
2521 #if (defined(BROKEN_STRNDUP) || !defined(HAVE_STRNDUP))
2523 #define strndup rep_strndup
2526 char *s1 = strndup(s, n);
2527 #if defined(PARANOID_MALLOC_CHECKER)
2531 #define strndup(s,n) __ERROR_DONT_USE_STRNDUP_DIRECTLY
2534 smb_panic("smb_xstrndup: malloc fail\n");
2539 vasprintf that aborts on malloc fail
2542 int smb_xvasprintf(char **ptr, const char *format, va_list ap)
2549 n = vasprintf(ptr, format, ap2);
2550 if (n == -1 || ! *ptr)
2551 smb_panic("smb_xvasprintf: out of memory");
2555 /*****************************************************************
2556 Like strdup but for memory.
2557 *****************************************************************/
2559 void *memdup(const void *p, size_t size)
2564 p2 = SMB_MALLOC(size);
2567 memcpy(p2, p, size);
2571 /*****************************************************************
2572 Get local hostname and cache result.
2573 *****************************************************************/
2575 char *myhostname(void)
2583 /*****************************************************************
2584 A useful function for returning a path in the Samba lock directory.
2585 *****************************************************************/
2587 char *lock_path(const char *name)
2589 static pstring fname;
2591 pstrcpy(fname,lp_lockdir());
2592 trim_char(fname,'\0','/');
2594 if (!directory_exist(fname,NULL))
2598 pstrcat(fname,name);
2603 /*****************************************************************
2604 A useful function for returning a path in the Samba pid directory.
2605 *****************************************************************/
2607 char *pid_path(const char *name)
2609 static pstring fname;
2611 pstrcpy(fname,lp_piddir());
2612 trim_char(fname,'\0','/');
2614 if (!directory_exist(fname,NULL))
2618 pstrcat(fname,name);
2624 * @brief Returns an absolute path to a file in the Samba lib directory.
2626 * @param name File to find, relative to LIBDIR.
2628 * @retval Pointer to a static #pstring containing the full path.
2631 char *lib_path(const char *name)
2633 static pstring fname;
2634 fstr_sprintf(fname, "%s/%s", dyn_LIBDIR, name);
2639 * @brief Returns the platform specific shared library extension.
2641 * @retval Pointer to a static #fstring containing the extension.
2644 const char *shlib_ext(void)
2646 return dyn_SHLIBEXT;
2649 /*******************************************************************
2650 Given a filename - get its directory name
2651 NB: Returned in static storage. Caveats:
2652 o Not safe in thread environment.
2653 o Caller must not free.
2654 o If caller wishes to preserve, they should copy.
2655 ********************************************************************/
2657 char *parent_dirname(const char *path)
2659 static pstring dirpath;
2665 pstrcpy(dirpath, path);
2666 p = strrchr_m(dirpath, '/'); /* Find final '/', if any */
2668 pstrcpy(dirpath, "."); /* No final "/", so dir is "." */
2671 ++p; /* For root "/", leave "/" in place */
2677 BOOL parent_dirname_talloc(TALLOC_CTX *mem_ctx, const char *dir,
2678 char **parent, const char **name)
2683 p = strrchr_m(dir, '/'); /* Find final '/', if any */
2686 if (!(*parent = talloc_strdup(mem_ctx, "."))) {
2697 if (!(*parent = TALLOC_ARRAY(mem_ctx, char, len+1))) {
2700 memcpy(*parent, dir, len);
2701 (*parent)[len] = '\0';
2709 /*******************************************************************
2710 Determine if a pattern contains any Microsoft wildcard characters.
2711 *******************************************************************/
2713 BOOL ms_has_wild(const char *s)
2717 if (lp_posix_pathnames()) {
2718 /* With posix pathnames no characters are wild. */
2722 while ((c = *s++)) {
2735 BOOL ms_has_wild_w(const smb_ucs2_t *s)
2738 if (!s) return False;
2739 while ((c = *s++)) {
2741 case UCS2_CHAR('*'):
2742 case UCS2_CHAR('?'):
2743 case UCS2_CHAR('<'):
2744 case UCS2_CHAR('>'):
2745 case UCS2_CHAR('"'):
2752 /*******************************************************************
2753 A wrapper that handles case sensitivity and the special handling
2755 *******************************************************************/
2757 BOOL mask_match(const char *string, char *pattern, BOOL is_case_sensitive)
2759 if (strcmp(string,"..") == 0)
2761 if (strcmp(pattern,".") == 0)
2764 return ms_fnmatch(pattern, string, Protocol <= PROTOCOL_LANMAN2, is_case_sensitive) == 0;
2767 /*******************************************************************
2768 A wrapper that handles case sensitivity and the special handling
2769 of the ".." name. Varient that is only called by old search code which requires
2770 pattern translation.
2771 *******************************************************************/
2773 BOOL mask_match_search(const char *string, char *pattern, BOOL is_case_sensitive)
2775 if (strcmp(string,"..") == 0)
2777 if (strcmp(pattern,".") == 0)
2780 return ms_fnmatch(pattern, string, True, is_case_sensitive) == 0;
2783 /*******************************************************************
2784 A wrapper that handles a list of patters and calls mask_match()
2785 on each. Returns True if any of the patterns match.
2786 *******************************************************************/
2788 BOOL mask_match_list(const char *string, char **list, int listLen, BOOL is_case_sensitive)
2790 while (listLen-- > 0) {
2791 if (mask_match(string, *list++, is_case_sensitive))
2797 /*********************************************************
2798 Recursive routine that is called by unix_wild_match.
2799 *********************************************************/
2801 static BOOL unix_do_match(const char *regexp, const char *str)
2805 for( p = regexp; *p && *str; ) {
2816 * Look for a character matching
2817 * the one after the '*'.
2821 return True; /* Automatic match */
2824 while(*str && (*p != *str))
2828 * Patch from weidel@multichart.de. In the case of the regexp
2829 * '*XX*' we want to ensure there are at least 2 'X' characters
2830 * in the string after the '*' for a match to be made.
2837 * Eat all the characters that match, but count how many there were.
2840 while(*str && (*p == *str)) {
2846 * Now check that if the regexp had n identical characters that
2847 * matchcount had at least that many matches.
2850 while ( *(p+1) && (*(p+1) == *p)) {
2855 if ( matchcount <= 0 )
2859 str--; /* We've eaten the match char after the '*' */
2861 if(unix_do_match(p, str))
2883 if (!*p && str[0] == '.' && str[1] == 0)
2886 if (!*str && *p == '?') {
2892 if(!*str && (*p == '*' && p[1] == '\0'))
2898 /*******************************************************************
2899 Simple case insensitive interface to a UNIX wildcard matcher.
2900 Returns True if match, False if not.
2901 *******************************************************************/
2903 BOOL unix_wild_match(const char *pattern, const char *string)
2908 pstrcpy(p2, pattern);
2909 pstrcpy(s2, string);
2913 /* Remove any *? and ** from the pattern as they are meaningless */
2914 for(p = p2; *p; p++)
2915 while( *p == '*' && (p[1] == '?' ||p[1] == '*'))
2916 pstrcpy( &p[1], &p[2]);
2918 if (strequal(p2,"*"))
2921 return unix_do_match(p2, s2);
2924 /**********************************************************************
2925 Converts a name to a fully qualified domain name.
2926 Returns True if lookup succeeded, False if not (then fqdn is set to name)
2927 ***********************************************************************/
2929 BOOL name_to_fqdn(fstring fqdn, const char *name)
2931 struct hostent *hp = sys_gethostbyname(name);
2933 if ( hp && hp->h_name && *hp->h_name ) {
2936 /* find out if the fqdn is returned as an alias
2937 * to cope with /etc/hosts files where the first
2938 * name is not the fqdn but the short name */
2939 if (hp->h_aliases && (! strchr_m(hp->h_name, '.'))) {
2941 for (i = 0; hp->h_aliases[i]; i++) {
2942 if (strchr_m(hp->h_aliases[i], '.')) {
2943 full = hp->h_aliases[i];
2948 if (full && (StrCaseCmp(full, "localhost.localdomain") == 0)) {
2949 DEBUG(1, ("WARNING: your /etc/hosts file may be broken!\n"));
2950 DEBUGADD(1, (" Specifing the machine hostname for address 127.0.0.1 may lead\n"));
2951 DEBUGADD(1, (" to Kerberos authentication problems as localhost.localdomain\n"));
2952 DEBUGADD(1, (" may end up being used instead of the real machine FQDN.\n"));
2960 DEBUG(10,("name_to_fqdn: lookup for %s -> %s.\n", name, full));
2961 fstrcpy(fqdn, full);
2964 DEBUG(10,("name_to_fqdn: lookup for %s failed.\n", name));
2965 fstrcpy(fqdn, name);
2970 /**********************************************************************
2971 Extension to talloc_get_type: Abort on type mismatch
2972 ***********************************************************************/
2974 void *talloc_check_name_abort(const void *ptr, const char *name)
2978 result = talloc_check_name(ptr, name);
2982 DEBUG(0, ("Talloc type mismatch, expected %s, got %s\n",
2983 name, talloc_get_name(ptr)));
2984 smb_panic("aborting");
2985 /* Keep the compiler happy */
2992 /*******************************************************************
2993 This routine is a trick to immediately catch errors when debugging
2994 with insure. A xterm with a gdb is popped up when insure catches
2995 a error. It is Linux specific.
2996 ********************************************************************/
2998 int _Insure_trap_error(int a1, int a2, int a3, int a4, int a5, int a6)
3003 /* you can get /usr/bin/backtrace from
3004 http://samba.org/ftp/unpacked/junkcode/backtrace */
3005 pstring cmd = "/usr/bin/backtrace %d";
3007 slprintf(pidstr, sizeof(pidstr)-1, "%d", sys_getpid());
3008 pstring_sub(cmd, "%d", pidstr);
3012 h = dlopen("/usr/local/parasoft/insure++lite/lib.linux2/libinsure.so", RTLD_LAZY);
3013 fn = dlsym(h, "_Insure_trap_error");
3015 if (!h || h == _Insure_trap_error) {
3016 h = dlopen("/usr/local/parasoft/lib.linux2/libinsure.so", RTLD_LAZY);
3017 fn = dlsym(h, "_Insure_trap_error");
3021 ret = fn(a1, a2, a3, a4, a5, a6);
3029 uint32 map_share_mode_to_deny_mode(uint32 share_access, uint32 private_options)
3031 switch (share_access & ~FILE_SHARE_DELETE) {
3032 case FILE_SHARE_NONE:
3034 case FILE_SHARE_READ:
3036 case FILE_SHARE_WRITE:
3038 case FILE_SHARE_READ|FILE_SHARE_WRITE:
3041 if (private_options & NTCREATEX_OPTIONS_PRIVATE_DENY_DOS) {
3043 } else if (private_options & NTCREATEX_OPTIONS_PRIVATE_DENY_FCB) {
3050 pid_t procid_to_pid(const struct process_id *proc)
3055 struct process_id pid_to_procid(pid_t pid)
3057 struct process_id result;
3062 struct process_id procid_self(void)
3064 return pid_to_procid(sys_getpid());
3067 struct server_id server_id_self(void)
3069 struct server_id id;
3070 id.id = procid_self();
3074 BOOL procid_equal(const struct process_id *p1, const struct process_id *p2)
3076 return (p1->pid == p2->pid);
3079 BOOL cluster_id_equal(const struct server_id *id1,
3080 const struct server_id *id2)
3082 return procid_equal(&id1->id, &id2->id);
3085 BOOL procid_is_me(const struct process_id *pid)
3087 return (pid->pid == sys_getpid());
3090 struct process_id interpret_pid(const char *pid_string)
3092 return pid_to_procid(atoi(pid_string));
3095 char *procid_str_static(const struct process_id *pid)
3098 fstr_sprintf(str, "%d", pid->pid);
3102 char *procid_str(TALLOC_CTX *mem_ctx, const struct process_id *pid)
3104 return talloc_strdup(mem_ctx, procid_str_static(pid));
3107 BOOL procid_valid(const struct process_id *pid)
3109 return (pid->pid != -1);
3112 BOOL procid_is_local(const struct process_id *pid)
3117 int this_is_smp(void)
3119 #if defined(HAVE_SYSCONF)
3121 #if defined(SYSCONF_SC_NPROC_ONLN)
3122 return (sysconf(_SC_NPROC_ONLN) > 1) ? 1 : 0;
3123 #elif defined(SYSCONF_SC_NPROCESSORS_ONLN)
3124 return (sysconf(_SC_NPROCESSORS_ONLN) > 1) ? 1 : 0;
3134 /****************************************************************
3135 Check if an offset into a buffer is safe.
3136 If this returns True it's safe to indirect into the byte at
3138 ****************************************************************/
3140 BOOL is_offset_safe(const char *buf_base, size_t buf_len, char *ptr, size_t off)
3142 const char *end_base = buf_base + buf_len;
3143 char *end_ptr = ptr + off;
3145 if (!buf_base || !ptr) {
3149 if (end_base < buf_base || end_ptr < ptr) {
3150 return False; /* wrap. */
3153 if (end_ptr < end_base) {
3159 /****************************************************************
3160 Return a safe pointer into a buffer, or NULL.
3161 ****************************************************************/
3163 char *get_safe_ptr(const char *buf_base, size_t buf_len, char *ptr, size_t off)
3165 return is_offset_safe(buf_base, buf_len, ptr, off) ?
3169 /****************************************************************
3170 Return a safe pointer into a string within a buffer, or NULL.
3171 ****************************************************************/
3173 char *get_safe_str_ptr(const char *buf_base, size_t buf_len, char *ptr, size_t off)
3175 if (!is_offset_safe(buf_base, buf_len, ptr, off)) {
3178 /* Check if a valid string exists at this offset. */
3179 if (skip_string(buf_base,buf_len, ptr + off) == NULL) {
3185 /****************************************************************
3186 Return an SVAL at a pointer, or failval if beyond the end.
3187 ****************************************************************/
3189 int get_safe_SVAL(const char *buf_base, size_t buf_len, char *ptr, size_t off, int failval)
3192 * Note we use off+1 here, not off+2 as SVAL accesses ptr[0] and ptr[1],
3195 if (!is_offset_safe(buf_base, buf_len, ptr, off+1)) {
3198 return SVAL(ptr,off);
3201 /****************************************************************
3202 Return an IVAL at a pointer, or failval if beyond the end.
3203 ****************************************************************/
3205 int get_safe_IVAL(const char *buf_base, size_t buf_len, char *ptr, size_t off, int failval)
3208 * Note we use off+3 here, not off+4 as IVAL accesses
3209 * ptr[0] ptr[1] ptr[2] ptr[3] NOT ptr[4].
3211 if (!is_offset_safe(buf_base, buf_len, ptr, off+3)) {
3214 return IVAL(ptr,off);