2 Unix SMB/CIFS implementation.
3 Samba utility functions
4 Copyright (C) Andrew Tridgell 1992-1998
5 Copyright (C) Jeremy Allison 2001-2007
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 3 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, see <http://www.gnu.org/licenses/>.
26 extern char *global_clobber_region_function;
27 extern unsigned int global_clobber_region_line;
29 /* Max allowable allococation - 256mb - 0x10000000 */
30 #define MAX_ALLOC_SIZE (1024*1024*256)
32 #if (defined(HAVE_NETGROUP) && defined (WITH_AUTOMOUNT))
33 #ifdef WITH_NISPLUS_HOME
34 #ifdef BROKEN_NISPLUS_INCLUDE_FILES
36 * The following lines are needed due to buggy include files
37 * in Solaris 2.6 which define GROUP in both /usr/include/sys/acl.h and
38 * also in /usr/include/rpcsvc/nis.h. The definitions conflict. JRA.
39 * Also GROUP_OBJ is defined as 0x4 in /usr/include/sys/acl.h and as
40 * an enum in /usr/include/rpcsvc/nis.h.
47 #if defined(GROUP_OBJ)
51 #endif /* BROKEN_NISPLUS_INCLUDE_FILES */
53 #include <rpcsvc/nis.h>
55 #endif /* WITH_NISPLUS_HOME */
56 #endif /* HAVE_NETGROUP && WITH_AUTOMOUNT */
58 enum protocol_types Protocol = PROTOCOL_COREPLUS;
60 static enum remote_arch_types ra_type = RA_UNKNOWN;
62 /***********************************************************************
63 Definitions for all names.
64 ***********************************************************************/
66 static char *smb_myname;
67 static char *smb_myworkgroup;
68 static char *smb_scope;
69 static int smb_num_netbios_names;
70 static char **smb_my_netbios_names;
72 /***********************************************************************
73 Allocate and set myname. Ensure upper case.
74 ***********************************************************************/
76 bool set_global_myname(const char *myname)
78 SAFE_FREE(smb_myname);
79 smb_myname = SMB_STRDUP(myname);
82 strupper_m(smb_myname);
86 const char *global_myname(void)
91 /***********************************************************************
92 Allocate and set myworkgroup. Ensure upper case.
93 ***********************************************************************/
95 bool set_global_myworkgroup(const char *myworkgroup)
97 SAFE_FREE(smb_myworkgroup);
98 smb_myworkgroup = SMB_STRDUP(myworkgroup);
101 strupper_m(smb_myworkgroup);
105 const char *lp_workgroup(void)
107 return smb_myworkgroup;
110 /***********************************************************************
111 Allocate and set scope. Ensure upper case.
112 ***********************************************************************/
114 bool set_global_scope(const char *scope)
116 SAFE_FREE(smb_scope);
117 smb_scope = SMB_STRDUP(scope);
120 strupper_m(smb_scope);
124 /*********************************************************************
125 Ensure scope is never null string.
126 *********************************************************************/
128 const char *global_scope(void)
131 set_global_scope("");
135 static void free_netbios_names_array(void)
139 for (i = 0; i < smb_num_netbios_names; i++)
140 SAFE_FREE(smb_my_netbios_names[i]);
142 SAFE_FREE(smb_my_netbios_names);
143 smb_num_netbios_names = 0;
146 static bool allocate_my_netbios_names_array(size_t number)
148 free_netbios_names_array();
150 smb_num_netbios_names = number + 1;
151 smb_my_netbios_names = SMB_MALLOC_ARRAY( char *, smb_num_netbios_names );
153 if (!smb_my_netbios_names)
156 memset(smb_my_netbios_names, '\0', sizeof(char *) * smb_num_netbios_names);
160 static bool set_my_netbios_names(const char *name, int i)
162 SAFE_FREE(smb_my_netbios_names[i]);
164 smb_my_netbios_names[i] = SMB_STRDUP(name);
165 if (!smb_my_netbios_names[i])
167 strupper_m(smb_my_netbios_names[i]);
171 /***********************************************************************
172 Free memory allocated to global objects
173 ***********************************************************************/
175 void gfree_names(void)
177 SAFE_FREE( smb_myname );
178 SAFE_FREE( smb_myworkgroup );
179 SAFE_FREE( smb_scope );
180 free_netbios_names_array();
181 free_local_machine_name();
184 void gfree_all( void )
194 const char *my_netbios_names(int i)
196 return smb_my_netbios_names[i];
199 bool set_netbios_aliases(const char **str_array)
203 /* Work out the max number of netbios aliases that we have */
204 for( namecount=0; str_array && (str_array[namecount] != NULL); namecount++ )
207 if ( global_myname() && *global_myname())
210 /* Allocate space for the netbios aliases */
211 if (!allocate_my_netbios_names_array(namecount))
214 /* Use the global_myname string first */
216 if ( global_myname() && *global_myname()) {
217 set_my_netbios_names( global_myname(), namecount );
223 for ( i = 0; str_array[i] != NULL; i++) {
225 bool duplicate = False;
227 /* Look for duplicates */
228 for( n=0; n<namecount; n++ ) {
229 if( strequal( str_array[i], my_netbios_names(n) ) ) {
235 if (!set_my_netbios_names(str_array[i], namecount))
244 /****************************************************************************
245 Common name initialization code.
246 ****************************************************************************/
248 bool init_names(void)
252 if (global_myname() == NULL || *global_myname() == '\0') {
253 if (!set_global_myname(myhostname())) {
254 DEBUG( 0, ( "init_structs: malloc fail.\n" ) );
259 if (!set_netbios_aliases(lp_netbios_aliases())) {
260 DEBUG( 0, ( "init_structs: malloc fail.\n" ) );
264 set_local_machine_name(global_myname(),false);
266 DEBUG( 5, ("Netbios name list:-\n") );
267 for( n=0; my_netbios_names(n); n++ ) {
268 DEBUGADD( 5, ("my_netbios_names[%d]=\"%s\"\n",
269 n, my_netbios_names(n) ) );
275 /**************************************************************************n
276 Code to cope with username/password auth options from the commandline.
277 Used mainly in client tools.
278 ****************************************************************************/
280 struct user_auth_info *user_auth_info_init(TALLOC_CTX *mem_ctx)
282 struct user_auth_info *result;
284 result = TALLOC_ZERO_P(mem_ctx, struct user_auth_info);
285 if (result == NULL) {
289 result->signing_state = Undefined;
293 const char *get_cmdline_auth_info_username(const struct user_auth_info *auth_info)
295 if (!auth_info->username) {
298 return auth_info->username;
301 void set_cmdline_auth_info_username(struct user_auth_info *auth_info,
302 const char *username)
304 TALLOC_FREE(auth_info->username);
305 auth_info->username = talloc_strdup(auth_info, username);
306 if (!auth_info->username) {
311 const char *get_cmdline_auth_info_password(const struct user_auth_info *auth_info)
313 if (!auth_info->password) {
316 return auth_info->password;
319 void set_cmdline_auth_info_password(struct user_auth_info *auth_info,
320 const char *password)
322 TALLOC_FREE(auth_info->password);
323 auth_info->password = talloc_strdup(auth_info, password);
324 if (!auth_info->password) {
327 auth_info->got_pass = true;
330 bool set_cmdline_auth_info_signing_state(struct user_auth_info *auth_info,
333 auth_info->signing_state = -1;
334 if (strequal(arg, "off") || strequal(arg, "no") ||
335 strequal(arg, "false")) {
336 auth_info->signing_state = false;
337 } else if (strequal(arg, "on") || strequal(arg, "yes") ||
338 strequal(arg, "true") || strequal(arg, "auto")) {
339 auth_info->signing_state = true;
340 } else if (strequal(arg, "force") || strequal(arg, "required") ||
341 strequal(arg, "forced")) {
342 auth_info->signing_state = Required;
349 int get_cmdline_auth_info_signing_state(const struct user_auth_info *auth_info)
351 return auth_info->signing_state;
354 void set_cmdline_auth_info_use_kerberos(struct user_auth_info *auth_info,
357 auth_info->use_kerberos = b;
360 bool get_cmdline_auth_info_use_kerberos(const struct user_auth_info *auth_info)
362 return auth_info->use_kerberos;
365 /* This should only be used by lib/popt_common.c JRA */
366 void set_cmdline_auth_info_use_krb5_ticket(struct user_auth_info *auth_info)
368 auth_info->use_kerberos = true;
369 auth_info->got_pass = true;
372 /* This should only be used by lib/popt_common.c JRA */
373 void set_cmdline_auth_info_smb_encrypt(struct user_auth_info *auth_info)
375 auth_info->smb_encrypt = true;
378 void set_cmdline_auth_info_use_machine_account(struct user_auth_info *auth_info)
380 auth_info->use_machine_account = true;
383 bool get_cmdline_auth_info_got_pass(const struct user_auth_info *auth_info)
385 return auth_info->got_pass;
388 bool get_cmdline_auth_info_smb_encrypt(const struct user_auth_info *auth_info)
390 return auth_info->smb_encrypt;
393 bool get_cmdline_auth_info_use_machine_account(const struct user_auth_info *auth_info)
395 return auth_info->use_machine_account;
398 struct user_auth_info *get_cmdline_auth_info_copy(TALLOC_CTX *mem_ctx,
399 const struct user_auth_info *src)
401 struct user_auth_info *result;
403 result = user_auth_info_init(mem_ctx);
404 if (result == NULL) {
410 result->username = talloc_strdup(
411 result, get_cmdline_auth_info_username(src));
412 result->password = talloc_strdup(
413 result, get_cmdline_auth_info_password(src));
414 if ((result->username == NULL) || (result->password == NULL)) {
422 bool set_cmdline_auth_info_machine_account_creds(struct user_auth_info *auth_info)
425 char *account = NULL;
427 if (!get_cmdline_auth_info_use_machine_account(auth_info)) {
431 if (!secrets_init()) {
432 d_printf("ERROR: Unable to open secrets database\n");
436 if (asprintf(&account, "%s$@%s", global_myname(), lp_realm()) < 0) {
440 pass = secrets_fetch_machine_password(lp_workgroup(), NULL, NULL);
442 d_printf("ERROR: Unable to fetch machine password for "
444 account, lp_workgroup());
449 set_cmdline_auth_info_username(auth_info, account);
450 set_cmdline_auth_info_password(auth_info, pass);
458 /****************************************************************************
459 Add a gid to an array of gids if it's not already there.
460 ****************************************************************************/
462 bool add_gid_to_array_unique(TALLOC_CTX *mem_ctx, gid_t gid,
463 gid_t **gids, size_t *num_gids)
467 if ((*num_gids != 0) && (*gids == NULL)) {
469 * A former call to this routine has failed to allocate memory
474 for (i=0; i<*num_gids; i++) {
475 if ((*gids)[i] == gid) {
480 *gids = TALLOC_REALLOC_ARRAY(mem_ctx, *gids, gid_t, *num_gids+1);
486 (*gids)[*num_gids] = gid;
491 /*******************************************************************
492 Check if a file exists - call vfs_file_exist for samba files.
493 ********************************************************************/
495 bool file_exist_stat(const char *fname,SMB_STRUCT_STAT *sbuf)
501 if (sys_stat(fname,sbuf) != 0)
504 return((S_ISREG(sbuf->st_mode)) || (S_ISFIFO(sbuf->st_mode)));
507 /*******************************************************************
508 Check if a unix domain socket exists - call vfs_file_exist for samba files.
509 ********************************************************************/
511 bool socket_exist(const char *fname)
514 if (sys_stat(fname,&st) != 0)
517 return S_ISSOCK(st.st_mode);
520 /*******************************************************************
521 Check if a directory exists.
522 ********************************************************************/
524 bool directory_exist_stat(char *dname,SMB_STRUCT_STAT *st)
532 if (sys_stat(dname,st) != 0)
535 ret = S_ISDIR(st->st_mode);
541 /*******************************************************************
542 Returns the size in bytes of the named given the stat struct.
543 ********************************************************************/
545 uint64_t get_file_size_stat(const SMB_STRUCT_STAT *sbuf)
547 return sbuf->st_size;
550 /*******************************************************************
551 Returns the size in bytes of the named file.
552 ********************************************************************/
554 SMB_OFF_T get_file_size(char *file_name)
558 if(sys_stat(file_name,&buf) != 0)
559 return (SMB_OFF_T)-1;
560 return get_file_size_stat(&buf);
563 /*******************************************************************
564 Return a string representing an attribute for a file.
565 ********************************************************************/
567 char *attrib_string(uint16 mode)
573 if (mode & aVOLID) fstrcat(attrstr,"V");
574 if (mode & aDIR) fstrcat(attrstr,"D");
575 if (mode & aARCH) fstrcat(attrstr,"A");
576 if (mode & aHIDDEN) fstrcat(attrstr,"H");
577 if (mode & aSYSTEM) fstrcat(attrstr,"S");
578 if (mode & aRONLY) fstrcat(attrstr,"R");
580 return talloc_strdup(talloc_tos(), attrstr);
583 /*******************************************************************
584 Show a smb message structure.
585 ********************************************************************/
587 void show_msg(char *buf)
595 DEBUG(5,("size=%d\nsmb_com=0x%x\nsmb_rcls=%d\nsmb_reh=%d\nsmb_err=%d\nsmb_flg=%d\nsmb_flg2=%d\n",
597 (int)CVAL(buf,smb_com),
598 (int)CVAL(buf,smb_rcls),
599 (int)CVAL(buf,smb_reh),
600 (int)SVAL(buf,smb_err),
601 (int)CVAL(buf,smb_flg),
602 (int)SVAL(buf,smb_flg2)));
603 DEBUGADD(5,("smb_tid=%d\nsmb_pid=%d\nsmb_uid=%d\nsmb_mid=%d\n",
604 (int)SVAL(buf,smb_tid),
605 (int)SVAL(buf,smb_pid),
606 (int)SVAL(buf,smb_uid),
607 (int)SVAL(buf,smb_mid)));
608 DEBUGADD(5,("smt_wct=%d\n",(int)CVAL(buf,smb_wct)));
610 for (i=0;i<(int)CVAL(buf,smb_wct);i++)
611 DEBUGADD(5,("smb_vwv[%2d]=%5d (0x%X)\n",i,
612 SVAL(buf,smb_vwv+2*i),SVAL(buf,smb_vwv+2*i)));
614 bcc = (int)SVAL(buf,smb_vwv+2*(CVAL(buf,smb_wct)));
616 DEBUGADD(5,("smb_bcc=%d\n",bcc));
624 dump_data(10, (uint8 *)smb_buf(buf), bcc);
627 /*******************************************************************
628 Set the length and marker of an encrypted smb packet.
629 ********************************************************************/
631 void smb_set_enclen(char *buf,int len,uint16 enc_ctx_num)
633 _smb_setlen(buf,len);
637 SSVAL(buf,6,enc_ctx_num);
640 /*******************************************************************
641 Set the length and marker of an smb packet.
642 ********************************************************************/
644 void smb_setlen(char *buf,int len)
646 _smb_setlen(buf,len);
654 /*******************************************************************
655 Setup only the byte count for a smb message.
656 ********************************************************************/
658 int set_message_bcc(char *buf,int num_bytes)
660 int num_words = CVAL(buf,smb_wct);
661 SSVAL(buf,smb_vwv + num_words*SIZEOFWORD,num_bytes);
662 _smb_setlen(buf,smb_size + num_words*2 + num_bytes - 4);
663 return (smb_size + num_words*2 + num_bytes);
666 /*******************************************************************
667 Add a data blob to the end of a smb_buf, adjusting bcc and smb_len.
668 Return the bytes added
669 ********************************************************************/
671 ssize_t message_push_blob(uint8 **outbuf, DATA_BLOB blob)
673 size_t newlen = smb_len(*outbuf) + 4 + blob.length;
676 if (!(tmp = TALLOC_REALLOC_ARRAY(NULL, *outbuf, uint8, newlen))) {
677 DEBUG(0, ("talloc failed\n"));
682 memcpy(tmp + smb_len(tmp) + 4, blob.data, blob.length);
683 set_message_bcc((char *)tmp, smb_buflen(tmp) + blob.length);
687 /*******************************************************************
688 Reduce a file name, removing .. elements.
689 ********************************************************************/
691 static char *dos_clean_name(TALLOC_CTX *ctx, const char *s)
696 DEBUG(3,("dos_clean_name [%s]\n",s));
698 /* remove any double slashes */
699 str = talloc_all_string_sub(ctx, s, "\\\\", "\\");
704 /* Remove leading .\\ characters */
705 if(strncmp(str, ".\\", 2) == 0) {
706 trim_string(str, ".\\", NULL);
708 str = talloc_strdup(ctx, ".\\");
715 while ((p = strstr_m(str,"\\..\\")) != NULL) {
721 if ((p=strrchr_m(str,'\\')) != NULL) {
726 str = talloc_asprintf(ctx,
735 trim_string(str,NULL,"\\..");
736 return talloc_all_string_sub(ctx, str, "\\.\\", "\\");
739 /*******************************************************************
740 Reduce a file name, removing .. elements.
741 ********************************************************************/
743 char *unix_clean_name(TALLOC_CTX *ctx, const char *s)
748 DEBUG(3,("unix_clean_name [%s]\n",s));
750 /* remove any double slashes */
751 str = talloc_all_string_sub(ctx, s, "//","/");
756 /* Remove leading ./ characters */
757 if(strncmp(str, "./", 2) == 0) {
758 trim_string(str, "./", NULL);
760 str = talloc_strdup(ctx, "./");
767 while ((p = strstr_m(str,"/../")) != NULL) {
773 if ((p=strrchr_m(str,'/')) != NULL) {
778 str = talloc_asprintf(ctx,
787 trim_string(str,NULL,"/..");
788 return talloc_all_string_sub(ctx, str, "/./", "/");
791 char *clean_name(TALLOC_CTX *ctx, const char *s)
793 char *str = dos_clean_name(ctx, s);
797 return unix_clean_name(ctx, str);
800 /*******************************************************************
801 Write data into an fd at a given offset. Ignore seek errors.
802 ********************************************************************/
804 ssize_t write_data_at_offset(int fd, const char *buffer, size_t N, SMB_OFF_T pos)
809 if (pos == (SMB_OFF_T)-1) {
810 return write_data(fd, buffer, N);
812 #if defined(HAVE_PWRITE) || defined(HAVE_PRWITE64)
814 ret = sys_pwrite(fd,buffer + total,N - total, pos);
815 if (ret == -1 && errno == ESPIPE) {
816 return write_data(fd, buffer + total,N - total);
819 DEBUG(0,("write_data_at_offset: write failure. Error = %s\n", strerror(errno) ));
828 return (ssize_t)total;
830 /* Use lseek and write_data. */
831 if (sys_lseek(fd, pos, SEEK_SET) == -1) {
832 if (errno != ESPIPE) {
836 return write_data(fd, buffer, N);
840 /*******************************************************************
841 Sleep for a specified number of milliseconds.
842 ********************************************************************/
844 void smb_msleep(unsigned int t)
846 #if defined(HAVE_NANOSLEEP)
847 struct timespec tval;
850 tval.tv_sec = t/1000;
851 tval.tv_nsec = 1000000*(t%1000);
855 ret = nanosleep(&tval, &tval);
856 } while (ret < 0 && errno == EINTR && (tval.tv_sec > 0 || tval.tv_nsec > 0));
858 unsigned int tdiff=0;
859 struct timeval tval,t1,t2;
866 tval.tv_sec = (t-tdiff)/1000;
867 tval.tv_usec = 1000*((t-tdiff)%1000);
869 /* Never wait for more than 1 sec. */
870 if (tval.tv_sec > 1) {
877 sys_select_intr(0,&fds,NULL,NULL,&tval);
880 if (t2.tv_sec < t1.tv_sec) {
881 /* Someone adjusted time... */
885 tdiff = TvalDiff(&t1,&t2);
890 bool reinit_after_fork(struct messaging_context *msg_ctx,
891 struct event_context *ev_ctx,
892 bool parent_longlived)
896 /* Reset the state of the random
897 * number generation system, so
898 * children do not get the same random
899 * numbers as each other */
900 set_need_random_reseed();
902 /* tdb needs special fork handling */
903 if (tdb_reopen_all(parent_longlived ? 1 : 0) == -1) {
904 DEBUG(0,("tdb_reopen_all failed.\n"));
909 event_context_reinit(ev_ctx);
914 * For clustering, we need to re-init our ctdbd connection after the
917 status = messaging_reinit(msg_ctx);
918 if (!NT_STATUS_IS_OK(status)) {
919 DEBUG(0,("messaging_reinit() failed: %s\n",
928 /****************************************************************************
929 Put up a yes/no prompt.
930 ****************************************************************************/
932 bool yesno(const char *p)
937 if (!fgets(ans,sizeof(ans)-1,stdin))
940 if (*ans == 'y' || *ans == 'Y')
946 #if defined(PARANOID_MALLOC_CHECKER)
948 /****************************************************************************
949 Internal malloc wrapper. Externally visible.
950 ****************************************************************************/
952 void *malloc_(size_t size)
959 #define malloc(s) __ERROR_DONT_USE_MALLOC_DIRECTLY
962 /****************************************************************************
963 Internal calloc wrapper. Not externally visible.
964 ****************************************************************************/
966 static void *calloc_(size_t count, size_t size)
968 if (size == 0 || count == 0) {
972 return calloc(count, size);
973 #define calloc(n,s) __ERROR_DONT_USE_CALLOC_DIRECTLY
976 /****************************************************************************
977 Internal realloc wrapper. Not externally visible.
978 ****************************************************************************/
980 static void *realloc_(void *ptr, size_t size)
983 return realloc(ptr, size);
984 #define realloc(p,s) __ERROR_DONT_USE_RELLOC_DIRECTLY
987 #endif /* PARANOID_MALLOC_CHECKER */
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 (size == 0 || nmemb == 0) {
1014 #if defined(PARANOID_MALLOC_CHECKER)
1015 return calloc_(nmemb, size);
1017 return calloc(nmemb, size);
1021 /****************************************************************************
1022 Expand a pointer to be a particular size.
1023 Note that this version of Realloc has an extra parameter that decides
1024 whether to free the passed in storage on allocation failure or if the
1027 This is designed for use in the typical idiom of :
1029 p = SMB_REALLOC(p, size)
1034 and not to have to keep track of the old 'p' contents to free later, nor
1035 to worry if the size parameter was zero. In the case where NULL is returned
1036 we guarentee that p has been freed.
1038 If free later semantics are desired, then pass 'free_old_on_error' as False which
1039 guarentees that the old contents are not freed on error, even if size == 0. To use
1042 tmp = SMB_REALLOC_KEEP_OLD_ON_ERROR(p, size);
1050 Changes were instigated by Coverity error checking. JRA.
1051 ****************************************************************************/
1053 void *Realloc(void *p, size_t size, bool free_old_on_error)
1058 if (free_old_on_error) {
1061 DEBUG(2,("Realloc asked for 0 bytes\n"));
1065 #if defined(PARANOID_MALLOC_CHECKER)
1067 ret = (void *)malloc_(size);
1069 ret = (void *)realloc_(p,size);
1073 ret = (void *)malloc(size);
1075 ret = (void *)realloc(p,size);
1080 if (free_old_on_error && p) {
1083 DEBUG(0,("Memory allocation error: failed to expand to %d bytes\n",(int)size));
1089 /****************************************************************************
1090 (Hopefully) efficient array append.
1091 ****************************************************************************/
1093 void add_to_large_array(TALLOC_CTX *mem_ctx, size_t element_size,
1094 void *element, void *_array, uint32 *num_elements,
1095 ssize_t *array_size)
1097 void **array = (void **)_array;
1099 if (*array_size < 0) {
1103 if (*array == NULL) {
1104 if (*array_size == 0) {
1108 if (*array_size >= MAX_ALLOC_SIZE/element_size) {
1112 *array = TALLOC(mem_ctx, element_size * (*array_size));
1113 if (*array == NULL) {
1118 if (*num_elements == *array_size) {
1121 if (*array_size >= MAX_ALLOC_SIZE/element_size) {
1125 *array = TALLOC_REALLOC(mem_ctx, *array,
1126 element_size * (*array_size));
1128 if (*array == NULL) {
1133 memcpy((char *)(*array) + element_size*(*num_elements),
1134 element, element_size);
1144 /****************************************************************************
1145 Get my own domain name, or "" if we have none.
1146 ****************************************************************************/
1148 char *get_mydnsdomname(TALLOC_CTX *ctx)
1150 const char *domname;
1153 domname = get_mydnsfullname();
1158 p = strchr_m(domname, '.');
1161 return talloc_strdup(ctx, p);
1163 return talloc_strdup(ctx, "");
1167 /****************************************************************************
1168 Interpret a protocol description string, with a default.
1169 ****************************************************************************/
1171 int interpret_protocol(const char *str,int def)
1173 if (strequal(str,"NT1"))
1174 return(PROTOCOL_NT1);
1175 if (strequal(str,"LANMAN2"))
1176 return(PROTOCOL_LANMAN2);
1177 if (strequal(str,"LANMAN1"))
1178 return(PROTOCOL_LANMAN1);
1179 if (strequal(str,"CORE"))
1180 return(PROTOCOL_CORE);
1181 if (strequal(str,"COREPLUS"))
1182 return(PROTOCOL_COREPLUS);
1183 if (strequal(str,"CORE+"))
1184 return(PROTOCOL_COREPLUS);
1186 DEBUG(0,("Unrecognised protocol level %s\n",str));
1192 #if (defined(HAVE_NETGROUP) && defined(WITH_AUTOMOUNT))
1193 /******************************************************************
1194 Remove any mount options such as -rsize=2048,wsize=2048 etc.
1195 Based on a fix from <Thomas.Hepper@icem.de>.
1196 Returns a malloc'ed string.
1197 *******************************************************************/
1199 static char *strip_mount_options(TALLOC_CTX *ctx, const char *str)
1202 const char *p = str;
1203 while(*p && !isspace(*p))
1205 while(*p && isspace(*p))
1208 return talloc_strdup(ctx, p);
1214 /*******************************************************************
1215 Patch from jkf@soton.ac.uk
1216 Split Luke's automount_server into YP lookup and string splitter
1217 so can easily implement automount_path().
1218 Returns a malloc'ed string.
1219 *******************************************************************/
1221 #ifdef WITH_NISPLUS_HOME
1222 char *automount_lookup(TALLOC_CTX *ctx, const char *user_name)
1226 char *nis_map = (char *)lp_nis_home_map_name();
1228 char buffer[NIS_MAXATTRVAL + 1];
1233 snprintf(buffer, sizeof(buffer), "[key=%s],%s", user_name, nis_map);
1234 DEBUG(5, ("NIS+ querystring: %s\n", buffer));
1236 if (result = nis_list(buffer, FOLLOW_PATH|EXPAND_NAME|HARD_LOOKUP, NULL, NULL)) {
1237 if (result->status != NIS_SUCCESS) {
1238 DEBUG(3, ("NIS+ query failed: %s\n", nis_sperrno(result->status)));
1240 object = result->objects.objects_val;
1241 if (object->zo_data.zo_type == ENTRY_OBJ) {
1242 entry = &object->zo_data.objdata_u.en_data;
1243 DEBUG(5, ("NIS+ entry type: %s\n", entry->en_type));
1244 DEBUG(3, ("NIS+ result: %s\n", entry->en_cols.en_cols_val[1].ec_value.ec_value_val));
1246 value = talloc_strdup(ctx,
1247 entry->en_cols.en_cols_val[1].ec_value.ec_value_val);
1249 nis_freeresult(result);
1252 value = talloc_string_sub(ctx,
1259 nis_freeresult(result);
1262 value = strip_mount_options(ctx, value);
1263 DEBUG(4, ("NIS+ Lookup: %s resulted in %s\n",
1268 #else /* WITH_NISPLUS_HOME */
1270 char *automount_lookup(TALLOC_CTX *ctx, const char *user_name)
1274 int nis_error; /* returned by yp all functions */
1275 char *nis_result; /* yp_match inits this */
1276 int nis_result_len; /* and set this */
1277 char *nis_domain; /* yp_get_default_domain inits this */
1278 char *nis_map = (char *)lp_nis_home_map_name();
1280 if ((nis_error = yp_get_default_domain(&nis_domain)) != 0) {
1281 DEBUG(3, ("YP Error: %s\n", yperr_string(nis_error)));
1285 DEBUG(5, ("NIS Domain: %s\n", nis_domain));
1287 if ((nis_error = yp_match(nis_domain, nis_map, user_name,
1288 strlen(user_name), &nis_result,
1289 &nis_result_len)) == 0) {
1290 value = talloc_strdup(ctx, nis_result);
1294 value = strip_mount_options(ctx, value);
1295 } else if(nis_error == YPERR_KEY) {
1296 DEBUG(3, ("YP Key not found: while looking up \"%s\" in map \"%s\"\n",
1297 user_name, nis_map));
1298 DEBUG(3, ("using defaults for server and home directory\n"));
1300 DEBUG(3, ("YP Error: \"%s\" while looking up \"%s\" in map \"%s\"\n",
1301 yperr_string(nis_error), user_name, nis_map));
1305 DEBUG(4, ("YP Lookup: %s resulted in %s\n", user_name, value));
1309 #endif /* WITH_NISPLUS_HOME */
1312 /****************************************************************************
1313 Check if a process exists. Does this work on all unixes?
1314 ****************************************************************************/
1316 bool process_exists(const struct server_id pid)
1318 if (procid_is_me(&pid)) {
1322 if (procid_is_local(&pid)) {
1323 return (kill(pid.pid,0) == 0 || errno != ESRCH);
1326 #ifdef CLUSTER_SUPPORT
1327 return ctdbd_process_exists(messaging_ctdbd_connection(), pid.vnn,
1334 /*******************************************************************
1335 Convert a uid into a user name.
1336 ********************************************************************/
1338 const char *uidtoname(uid_t uid)
1340 TALLOC_CTX *ctx = talloc_tos();
1342 struct passwd *pass = NULL;
1344 pass = getpwuid_alloc(ctx,uid);
1346 name = talloc_strdup(ctx,pass->pw_name);
1349 name = talloc_asprintf(ctx,
1356 /*******************************************************************
1357 Convert a gid into a group name.
1358 ********************************************************************/
1360 char *gidtoname(gid_t gid)
1364 grp = getgrgid(gid);
1366 return talloc_strdup(talloc_tos(), grp->gr_name);
1369 return talloc_asprintf(talloc_tos(),
1375 /*******************************************************************
1376 Convert a user name into a uid.
1377 ********************************************************************/
1379 uid_t nametouid(const char *name)
1381 struct passwd *pass;
1385 pass = getpwnam_alloc(talloc_autofree_context(), name);
1392 u = (uid_t)strtol(name, &p, 0);
1393 if ((p != name) && (*p == '\0'))
1399 /*******************************************************************
1400 Convert a name to a gid_t if possible. Return -1 if not a group.
1401 ********************************************************************/
1403 gid_t nametogid(const char *name)
1409 g = (gid_t)strtol(name, &p, 0);
1410 if ((p != name) && (*p == '\0'))
1413 grp = sys_getgrnam(name);
1415 return(grp->gr_gid);
1419 /*******************************************************************
1420 Something really nasty happened - panic !
1421 ********************************************************************/
1423 void smb_panic(const char *const why)
1431 if (global_clobber_region_function) {
1432 DEBUG(0,("smb_panic: clobber_region() last called from [%s(%u)]\n",
1433 global_clobber_region_function,
1434 global_clobber_region_line));
1439 DEBUG(0,("PANIC (pid %llu): %s\n",
1440 (unsigned long long)sys_getpid(), why));
1443 cmd = lp_panic_action();
1445 DEBUG(0, ("smb_panic(): calling panic action [%s]\n", cmd));
1446 result = system(cmd);
1449 DEBUG(0, ("smb_panic(): fork failed in panic action: %s\n",
1452 DEBUG(0, ("smb_panic(): action returned status %d\n",
1453 WEXITSTATUS(result)));
1459 /*******************************************************************
1460 Print a backtrace of the stack to the debug log. This function
1461 DELIBERATELY LEAKS MEMORY. The expectation is that you should
1462 exit shortly after calling it.
1463 ********************************************************************/
1465 #ifdef HAVE_LIBUNWIND_H
1466 #include <libunwind.h>
1469 #ifdef HAVE_EXECINFO_H
1470 #include <execinfo.h>
1473 #ifdef HAVE_LIBEXC_H
1477 void log_stack_trace(void)
1479 #ifdef HAVE_LIBUNWIND
1480 /* Try to use libunwind before any other technique since on ia64
1481 * libunwind correctly walks the stack in more circumstances than
1484 unw_cursor_t cursor;
1489 unw_word_t ip, sp, off;
1491 procname[sizeof(procname) - 1] = '\0';
1493 if (unw_getcontext(&uc) != 0) {
1494 goto libunwind_failed;
1497 if (unw_init_local(&cursor, &uc) != 0) {
1498 goto libunwind_failed;
1501 DEBUG(0, ("BACKTRACE:\n"));
1505 unw_get_reg(&cursor, UNW_REG_IP, &ip);
1506 unw_get_reg(&cursor, UNW_REG_SP, &sp);
1508 switch (unw_get_proc_name(&cursor,
1509 procname, sizeof(procname) - 1, &off) ) {
1513 /* Name truncated. */
1514 DEBUGADD(0, (" #%u %s + %#llx [ip=%#llx] [sp=%#llx]\n",
1515 i, procname, (long long)off,
1516 (long long)ip, (long long) sp));
1519 /* case -UNW_ENOINFO: */
1520 /* case -UNW_EUNSPEC: */
1521 /* No symbol name found. */
1522 DEBUGADD(0, (" #%u %s [ip=%#llx] [sp=%#llx]\n",
1523 i, "<unknown symbol>",
1524 (long long)ip, (long long) sp));
1527 } while (unw_step(&cursor) > 0);
1532 DEBUG(0, ("unable to produce a stack trace with libunwind\n"));
1534 #elif HAVE_BACKTRACE_SYMBOLS
1535 void *backtrace_stack[BACKTRACE_STACK_SIZE];
1536 size_t backtrace_size;
1537 char **backtrace_strings;
1539 /* get the backtrace (stack frames) */
1540 backtrace_size = backtrace(backtrace_stack,BACKTRACE_STACK_SIZE);
1541 backtrace_strings = backtrace_symbols(backtrace_stack, backtrace_size);
1543 DEBUG(0, ("BACKTRACE: %lu stack frames:\n",
1544 (unsigned long)backtrace_size));
1546 if (backtrace_strings) {
1549 for (i = 0; i < backtrace_size; i++)
1550 DEBUGADD(0, (" #%u %s\n", i, backtrace_strings[i]));
1552 /* Leak the backtrace_strings, rather than risk what free() might do */
1557 /* The IRIX libexc library provides an API for unwinding the stack. See
1558 * libexc(3) for details. Apparantly trace_back_stack leaks memory, but
1559 * since we are about to abort anyway, it hardly matters.
1562 #define NAMESIZE 32 /* Arbitrary */
1564 __uint64_t addrs[BACKTRACE_STACK_SIZE];
1565 char * names[BACKTRACE_STACK_SIZE];
1566 char namebuf[BACKTRACE_STACK_SIZE * NAMESIZE];
1573 ZERO_ARRAY(namebuf);
1575 /* We need to be root so we can open our /proc entry to walk
1576 * our stack. It also helps when we want to dump core.
1580 for (i = 0; i < BACKTRACE_STACK_SIZE; i++) {
1581 names[i] = namebuf + (i * NAMESIZE);
1584 levels = trace_back_stack(0, addrs, names,
1585 BACKTRACE_STACK_SIZE, NAMESIZE - 1);
1587 DEBUG(0, ("BACKTRACE: %d stack frames:\n", levels));
1588 for (i = 0; i < levels; i++) {
1589 DEBUGADD(0, (" #%d 0x%llx %s\n", i, addrs[i], names[i]));
1594 DEBUG(0, ("unable to produce a stack trace on this platform\n"));
1598 /*******************************************************************
1599 A readdir wrapper which just returns the file name.
1600 ********************************************************************/
1602 const char *readdirname(SMB_STRUCT_DIR *p)
1604 SMB_STRUCT_DIRENT *ptr;
1610 ptr = (SMB_STRUCT_DIRENT *)sys_readdir(p);
1614 dname = ptr->d_name;
1621 #ifdef HAVE_BROKEN_READDIR_NAME
1622 /* using /usr/ucb/cc is BAD */
1626 return talloc_strdup(talloc_tos(), dname);
1629 /*******************************************************************
1630 Utility function used to decide if the last component
1631 of a path matches a (possibly wildcarded) entry in a namelist.
1632 ********************************************************************/
1634 bool is_in_path(const char *name, name_compare_entry *namelist, bool case_sensitive)
1636 const char *last_component;
1638 /* if we have no list it's obviously not in the path */
1639 if((namelist == NULL ) || ((namelist != NULL) && (namelist[0].name == NULL))) {
1643 DEBUG(8, ("is_in_path: %s\n", name));
1645 /* Get the last component of the unix name. */
1646 last_component = strrchr_m(name, '/');
1647 if (!last_component) {
1648 last_component = name;
1650 last_component++; /* Go past '/' */
1653 for(; namelist->name != NULL; namelist++) {
1654 if(namelist->is_wild) {
1655 if (mask_match(last_component, namelist->name, case_sensitive)) {
1656 DEBUG(8,("is_in_path: mask match succeeded\n"));
1660 if((case_sensitive && (strcmp(last_component, namelist->name) == 0))||
1661 (!case_sensitive && (StrCaseCmp(last_component, namelist->name) == 0))) {
1662 DEBUG(8,("is_in_path: match succeeded\n"));
1667 DEBUG(8,("is_in_path: match not found\n"));
1671 /*******************************************************************
1672 Strip a '/' separated list into an array of
1673 name_compare_enties structures suitable for
1674 passing to is_in_path(). We do this for
1675 speed so we can pre-parse all the names in the list
1676 and don't do it for each call to is_in_path().
1677 namelist is modified here and is assumed to be
1678 a copy owned by the caller.
1679 We also check if the entry contains a wildcard to
1680 remove a potentially expensive call to mask_match
1682 ********************************************************************/
1684 void set_namearray(name_compare_entry **ppname_array, const char *namelist)
1687 const char *nameptr = namelist;
1688 int num_entries = 0;
1691 (*ppname_array) = NULL;
1693 if((nameptr == NULL ) || ((nameptr != NULL) && (*nameptr == '\0')))
1696 /* We need to make two passes over the string. The
1697 first to count the number of elements, the second
1702 if ( *nameptr == '/' ) {
1703 /* cope with multiple (useless) /s) */
1707 /* find the next / */
1708 name_end = strchr_m(nameptr, '/');
1710 /* oops - the last check for a / didn't find one. */
1711 if (name_end == NULL)
1714 /* next segment please */
1715 nameptr = name_end + 1;
1719 if(num_entries == 0)
1722 if(( (*ppname_array) = SMB_MALLOC_ARRAY(name_compare_entry, num_entries + 1)) == NULL) {
1723 DEBUG(0,("set_namearray: malloc fail\n"));
1727 /* Now copy out the names */
1731 if ( *nameptr == '/' ) {
1732 /* cope with multiple (useless) /s) */
1736 /* find the next / */
1737 if ((name_end = strchr_m(nameptr, '/')) != NULL)
1740 /* oops - the last check for a / didn't find one. */
1741 if(name_end == NULL)
1744 (*ppname_array)[i].is_wild = ms_has_wild(nameptr);
1745 if(((*ppname_array)[i].name = SMB_STRDUP(nameptr)) == NULL) {
1746 DEBUG(0,("set_namearray: malloc fail (1)\n"));
1750 /* next segment please */
1751 nameptr = name_end + 1;
1755 (*ppname_array)[i].name = NULL;
1760 /****************************************************************************
1761 Routine to free a namearray.
1762 ****************************************************************************/
1764 void free_namearray(name_compare_entry *name_array)
1768 if(name_array == NULL)
1771 for(i=0; name_array[i].name!=NULL; i++)
1772 SAFE_FREE(name_array[i].name);
1773 SAFE_FREE(name_array);
1777 #define DBGC_CLASS DBGC_LOCKING
1779 /****************************************************************************
1780 Simple routine to query existing file locks. Cruft in NFS and 64->32 bit mapping
1781 is dealt with in posix.c
1782 Returns True if we have information regarding this lock region (and returns
1783 F_UNLCK in *ptype if the region is unlocked). False if the call failed.
1784 ****************************************************************************/
1786 bool fcntl_getlock(int fd, SMB_OFF_T *poffset, SMB_OFF_T *pcount, int *ptype, pid_t *ppid)
1788 SMB_STRUCT_FLOCK lock;
1791 DEBUG(8,("fcntl_getlock fd=%d offset=%.0f count=%.0f type=%d\n",
1792 fd,(double)*poffset,(double)*pcount,*ptype));
1794 lock.l_type = *ptype;
1795 lock.l_whence = SEEK_SET;
1796 lock.l_start = *poffset;
1797 lock.l_len = *pcount;
1800 ret = sys_fcntl_ptr(fd,SMB_F_GETLK,&lock);
1804 DEBUG(3,("fcntl_getlock: lock request failed at offset %.0f count %.0f type %d (%s)\n",
1805 (double)*poffset,(double)*pcount,*ptype,strerror(errno)));
1810 *ptype = lock.l_type;
1811 *poffset = lock.l_start;
1812 *pcount = lock.l_len;
1815 DEBUG(3,("fcntl_getlock: fd %d is returned info %d pid %u\n",
1816 fd, (int)lock.l_type, (unsigned int)lock.l_pid));
1821 #define DBGC_CLASS DBGC_ALL
1823 /*******************************************************************
1824 Is the name specified one of my netbios names.
1825 Returns true if it is equal, false otherwise.
1826 ********************************************************************/
1828 bool is_myname(const char *s)
1833 for (n=0; my_netbios_names(n); n++) {
1834 if (strequal(my_netbios_names(n), s)) {
1839 DEBUG(8, ("is_myname(\"%s\") returns %d\n", s, ret));
1843 /*******************************************************************
1844 Is the name specified our workgroup/domain.
1845 Returns true if it is equal, false otherwise.
1846 ********************************************************************/
1848 bool is_myworkgroup(const char *s)
1852 if (strequal(s, lp_workgroup())) {
1856 DEBUG(8, ("is_myworkgroup(\"%s\") returns %d\n", s, ret));
1860 /*******************************************************************
1861 we distinguish between 2K and XP by the "Native Lan Manager" string
1862 WinXP => "Windows 2002 5.1"
1863 WinXP 64bit => "Windows XP 5.2"
1864 Win2k => "Windows 2000 5.0"
1865 NT4 => "Windows NT 4.0"
1866 Win9x => "Windows 4.0"
1867 Windows 2003 doesn't set the native lan manager string but
1868 they do set the domain to "Windows 2003 5.2" (probably a bug).
1869 ********************************************************************/
1871 void ra_lanman_string( const char *native_lanman )
1873 if ( strcmp( native_lanman, "Windows 2002 5.1" ) == 0 )
1874 set_remote_arch( RA_WINXP );
1875 else if ( strcmp( native_lanman, "Windows XP 5.2" ) == 0 )
1876 set_remote_arch( RA_WINXP64 );
1877 else if ( strcmp( native_lanman, "Windows Server 2003 5.2" ) == 0 )
1878 set_remote_arch( RA_WIN2K3 );
1881 static const char *remote_arch_str;
1883 const char *get_remote_arch_str(void)
1885 if (!remote_arch_str) {
1888 return remote_arch_str;
1891 /*******************************************************************
1892 Set the horrid remote_arch string based on an enum.
1893 ********************************************************************/
1895 void set_remote_arch(enum remote_arch_types type)
1900 remote_arch_str = "WfWg";
1903 remote_arch_str = "OS2";
1906 remote_arch_str = "Win95";
1909 remote_arch_str = "WinNT";
1912 remote_arch_str = "Win2K";
1915 remote_arch_str = "WinXP";
1918 remote_arch_str = "WinXP64";
1921 remote_arch_str = "Win2K3";
1924 remote_arch_str = "Vista";
1927 remote_arch_str = "Samba";
1930 remote_arch_str = "CIFSFS";
1933 ra_type = RA_UNKNOWN;
1934 remote_arch_str = "UNKNOWN";
1938 DEBUG(10,("set_remote_arch: Client arch is \'%s\'\n",
1942 /*******************************************************************
1943 Get the remote_arch type.
1944 ********************************************************************/
1946 enum remote_arch_types get_remote_arch(void)
1951 const char *tab_depth(int level, int depth)
1953 if( CHECK_DEBUGLVL(level) ) {
1954 dbgtext("%*s", depth*4, "");
1959 /*****************************************************************************
1960 Provide a checksum on a string
1962 Input: s - the null-terminated character string for which the checksum
1965 Output: The checksum value calculated for s.
1966 *****************************************************************************/
1968 int str_checksum(const char *s)
1976 res ^= (c << (i % 15)) ^ (c >> (15-(i%15)));
1983 /*****************************************************************
1984 Zero a memory area then free it. Used to catch bugs faster.
1985 *****************************************************************/
1987 void zero_free(void *p, size_t size)
1993 /*****************************************************************
1994 Set our open file limit to a requested max and return the limit.
1995 *****************************************************************/
1997 int set_maxfiles(int requested_max)
1999 #if (defined(HAVE_GETRLIMIT) && defined(RLIMIT_NOFILE))
2001 int saved_current_limit;
2003 if(getrlimit(RLIMIT_NOFILE, &rlp)) {
2004 DEBUG(0,("set_maxfiles: getrlimit (1) for RLIMIT_NOFILE failed with error %s\n",
2007 return requested_max;
2011 * Set the fd limit to be real_max_open_files + MAX_OPEN_FUDGEFACTOR to
2012 * account for the extra fd we need
2013 * as well as the log files and standard
2014 * handles etc. Save the limit we want to set in case
2015 * we are running on an OS that doesn't support this limit (AIX)
2016 * which always returns RLIM_INFINITY for rlp.rlim_max.
2019 /* Try raising the hard (max) limit to the requested amount. */
2021 #if defined(RLIM_INFINITY)
2022 if (rlp.rlim_max != RLIM_INFINITY) {
2023 int orig_max = rlp.rlim_max;
2025 if ( rlp.rlim_max < requested_max )
2026 rlp.rlim_max = requested_max;
2028 /* This failing is not an error - many systems (Linux) don't
2029 support our default request of 10,000 open files. JRA. */
2031 if(setrlimit(RLIMIT_NOFILE, &rlp)) {
2032 DEBUG(3,("set_maxfiles: setrlimit for RLIMIT_NOFILE for %d max files failed with error %s\n",
2033 (int)rlp.rlim_max, strerror(errno) ));
2035 /* Set failed - restore original value from get. */
2036 rlp.rlim_max = orig_max;
2041 /* Now try setting the soft (current) limit. */
2043 saved_current_limit = rlp.rlim_cur = MIN(requested_max,rlp.rlim_max);
2045 if(setrlimit(RLIMIT_NOFILE, &rlp)) {
2046 DEBUG(0,("set_maxfiles: setrlimit for RLIMIT_NOFILE for %d files failed with error %s\n",
2047 (int)rlp.rlim_cur, strerror(errno) ));
2049 return saved_current_limit;
2052 if(getrlimit(RLIMIT_NOFILE, &rlp)) {
2053 DEBUG(0,("set_maxfiles: getrlimit (2) for RLIMIT_NOFILE failed with error %s\n",
2056 return saved_current_limit;
2059 #if defined(RLIM_INFINITY)
2060 if(rlp.rlim_cur == RLIM_INFINITY)
2061 return saved_current_limit;
2064 if((int)rlp.rlim_cur > saved_current_limit)
2065 return saved_current_limit;
2067 return rlp.rlim_cur;
2068 #else /* !defined(HAVE_GETRLIMIT) || !defined(RLIMIT_NOFILE) */
2070 * No way to know - just guess...
2072 return requested_max;
2076 /*****************************************************************
2077 Possibly replace mkstemp if it is broken.
2078 *****************************************************************/
2080 int smb_mkstemp(char *name_template)
2082 #if HAVE_SECURE_MKSTEMP
2083 return mkstemp(name_template);
2085 /* have a reasonable go at emulating it. Hope that
2086 the system mktemp() isn't completly hopeless */
2087 char *p = mktemp(name_template);
2090 return open(p, O_CREAT|O_EXCL|O_RDWR, 0600);
2094 /*****************************************************************
2095 malloc that aborts with smb_panic on fail or zero size.
2096 *****************************************************************/
2098 void *smb_xmalloc_array(size_t size, unsigned int count)
2102 smb_panic("smb_xmalloc_array: called with zero size");
2104 if (count >= MAX_ALLOC_SIZE/size) {
2105 smb_panic("smb_xmalloc_array: alloc size too large");
2107 if ((p = SMB_MALLOC(size*count)) == NULL) {
2108 DEBUG(0, ("smb_xmalloc_array failed to allocate %lu * %lu bytes\n",
2109 (unsigned long)size, (unsigned long)count));
2110 smb_panic("smb_xmalloc_array: malloc failed");
2116 vasprintf that aborts on malloc fail
2119 int smb_xvasprintf(char **ptr, const char *format, va_list ap)
2126 n = vasprintf(ptr, format, ap2);
2127 if (n == -1 || ! *ptr) {
2128 smb_panic("smb_xvasprintf: out of memory");
2134 /*****************************************************************
2135 Get local hostname and cache result.
2136 *****************************************************************/
2138 char *myhostname(void)
2142 /* This is cached forever so
2143 * use talloc_autofree_context() ctx. */
2144 ret = get_myname(talloc_autofree_context());
2150 * @brief Returns an absolute path to a file concatenating the provided
2151 * @a rootpath and @a basename
2153 * @param name Filename, relative to @a rootpath
2155 * @retval Pointer to a string containing the full path.
2158 static char *xx_path(const char *name, const char *rootpath)
2162 fname = talloc_strdup(talloc_tos(), rootpath);
2166 trim_string(fname,"","/");
2168 if (!directory_exist(fname)) {
2169 if (!mkdir(fname,0755))
2170 DEBUG(1, ("Unable to create directory %s for file %s. "
2171 "Error was %s\n", fname, name, strerror(errno)));
2174 return talloc_asprintf(talloc_tos(),
2181 * @brief Returns an absolute path to a file in the Samba lock directory.
2183 * @param name File to find, relative to LOCKDIR.
2185 * @retval Pointer to a talloc'ed string containing the full path.
2188 char *lock_path(const char *name)
2190 return xx_path(name, lp_lockdir());
2194 * @brief Returns an absolute path to a file in the Samba pid directory.
2196 * @param name File to find, relative to PIDDIR.
2198 * @retval Pointer to a talloc'ed string containing the full path.
2201 char *pid_path(const char *name)
2203 return xx_path(name, lp_piddir());
2207 * @brief Returns an absolute path to a file in the Samba lib directory.
2209 * @param name File to find, relative to LIBDIR.
2211 * @retval Pointer to a string containing the full path.
2214 char *lib_path(const char *name)
2216 return talloc_asprintf(talloc_tos(), "%s/%s", get_dyn_LIBDIR(), name);
2220 * @brief Returns an absolute path to a file in the Samba modules directory.
2222 * @param name File to find, relative to MODULESDIR.
2224 * @retval Pointer to a string containing the full path.
2227 char *modules_path(const char *name)
2229 return talloc_asprintf(talloc_tos(), "%s/%s", get_dyn_MODULESDIR(), name);
2233 * @brief Returns an absolute path to a file in the Samba data directory.
2235 * @param name File to find, relative to CODEPAGEDIR.
2237 * @retval Pointer to a talloc'ed string containing the full path.
2240 char *data_path(const char *name)
2242 return talloc_asprintf(talloc_tos(), "%s/%s", get_dyn_CODEPAGEDIR(), name);
2246 * @brief Returns an absolute path to a file in the Samba state directory.
2248 * @param name File to find, relative to STATEDIR.
2250 * @retval Pointer to a talloc'ed string containing the full path.
2253 char *state_path(const char *name)
2255 return xx_path(name, lp_statedir());
2259 * @brief Returns an absolute path to a file in the Samba cache directory.
2261 * @param name File to find, relative to CACHEDIR.
2263 * @retval Pointer to a talloc'ed string containing the full path.
2266 char *cache_path(const char *name)
2268 return xx_path(name, lp_cachedir());
2272 * @brief Returns the platform specific shared library extension.
2274 * @retval Pointer to a const char * containing the extension.
2277 const char *shlib_ext(void)
2279 return get_dyn_SHLIBEXT();
2282 /*******************************************************************
2283 Given a filename - get its directory name
2284 ********************************************************************/
2286 bool parent_dirname(TALLOC_CTX *mem_ctx, const char *dir, char **parent,
2292 p = strrchr_m(dir, '/'); /* Find final '/', if any */
2295 if (!(*parent = talloc_strdup(mem_ctx, "."))) {
2306 if (!(*parent = (char *)TALLOC_MEMDUP(mem_ctx, dir, len+1))) {
2309 (*parent)[len] = '\0';
2317 /*******************************************************************
2318 Determine if a pattern contains any Microsoft wildcard characters.
2319 *******************************************************************/
2321 bool ms_has_wild(const char *s)
2325 if (lp_posix_pathnames()) {
2326 /* With posix pathnames no characters are wild. */
2330 while ((c = *s++)) {
2343 bool ms_has_wild_w(const smb_ucs2_t *s)
2346 if (!s) return False;
2347 while ((c = *s++)) {
2349 case UCS2_CHAR('*'):
2350 case UCS2_CHAR('?'):
2351 case UCS2_CHAR('<'):
2352 case UCS2_CHAR('>'):
2353 case UCS2_CHAR('"'):
2360 /*******************************************************************
2361 A wrapper that handles case sensitivity and the special handling
2363 *******************************************************************/
2365 bool mask_match(const char *string, const char *pattern, bool is_case_sensitive)
2367 if (strcmp(string,"..") == 0)
2369 if (strcmp(pattern,".") == 0)
2372 return ms_fnmatch(pattern, string, Protocol <= PROTOCOL_LANMAN2, is_case_sensitive) == 0;
2375 /*******************************************************************
2376 A wrapper that handles case sensitivity and the special handling
2377 of the ".." name. Varient that is only called by old search code which requires
2378 pattern translation.
2379 *******************************************************************/
2381 bool mask_match_search(const char *string, const char *pattern, bool is_case_sensitive)
2383 if (strcmp(string,"..") == 0)
2385 if (strcmp(pattern,".") == 0)
2388 return ms_fnmatch(pattern, string, True, is_case_sensitive) == 0;
2391 /*******************************************************************
2392 A wrapper that handles a list of patters and calls mask_match()
2393 on each. Returns True if any of the patterns match.
2394 *******************************************************************/
2396 bool mask_match_list(const char *string, char **list, int listLen, bool is_case_sensitive)
2398 while (listLen-- > 0) {
2399 if (mask_match(string, *list++, is_case_sensitive))
2405 /*********************************************************
2406 Recursive routine that is called by unix_wild_match.
2407 *********************************************************/
2409 static bool unix_do_match(const char *regexp, const char *str)
2413 for( p = regexp; *p && *str; ) {
2424 * Look for a character matching
2425 * the one after the '*'.
2429 return true; /* Automatic match */
2432 while(*str && (*p != *str))
2436 * Patch from weidel@multichart.de. In the case of the regexp
2437 * '*XX*' we want to ensure there are at least 2 'X' characters
2438 * in the string after the '*' for a match to be made.
2445 * Eat all the characters that match, but count how many there were.
2448 while(*str && (*p == *str)) {
2454 * Now check that if the regexp had n identical characters that
2455 * matchcount had at least that many matches.
2458 while ( *(p+1) && (*(p+1) == *p)) {
2463 if ( matchcount <= 0 )
2467 str--; /* We've eaten the match char after the '*' */
2469 if(unix_do_match(p, str))
2491 if (!*p && str[0] == '.' && str[1] == 0)
2494 if (!*str && *p == '?') {
2500 if(!*str && (*p == '*' && p[1] == '\0'))
2506 /*******************************************************************
2507 Simple case insensitive interface to a UNIX wildcard matcher.
2508 Returns True if match, False if not.
2509 *******************************************************************/
2511 bool unix_wild_match(const char *pattern, const char *string)
2513 TALLOC_CTX *ctx = talloc_stackframe();
2519 p2 = talloc_strdup(ctx,pattern);
2520 s2 = talloc_strdup(ctx,string);
2528 /* Remove any *? and ** from the pattern as they are meaningless */
2529 for(p = p2; *p; p++) {
2530 while( *p == '*' && (p[1] == '?' ||p[1] == '*')) {
2531 memmove(&p[1], &p[2], strlen(&p[2])+1);
2535 if (strequal(p2,"*")) {
2540 ret = unix_do_match(p2, s2);
2545 /**********************************************************************
2546 Converts a name to a fully qualified domain name.
2547 Returns true if lookup succeeded, false if not (then fqdn is set to name)
2548 Note we deliberately use gethostbyname here, not getaddrinfo as we want
2549 to examine the h_aliases and I don't know how to do that with getaddrinfo.
2550 ***********************************************************************/
2552 bool name_to_fqdn(fstring fqdn, const char *name)
2555 struct hostent *hp = gethostbyname(name);
2557 if (!hp || !hp->h_name || !*hp->h_name) {
2558 DEBUG(10,("name_to_fqdn: lookup for %s failed.\n", name));
2559 fstrcpy(fqdn, name);
2563 /* Find out if the fqdn is returned as an alias
2564 * to cope with /etc/hosts files where the first
2565 * name is not the fqdn but the short name */
2566 if (hp->h_aliases && (! strchr_m(hp->h_name, '.'))) {
2568 for (i = 0; hp->h_aliases[i]; i++) {
2569 if (strchr_m(hp->h_aliases[i], '.')) {
2570 full = hp->h_aliases[i];
2575 if (full && (StrCaseCmp(full, "localhost.localdomain") == 0)) {
2576 DEBUG(1, ("WARNING: your /etc/hosts file may be broken!\n"));
2577 DEBUGADD(1, (" Specifing the machine hostname for address 127.0.0.1 may lead\n"));
2578 DEBUGADD(1, (" to Kerberos authentication problems as localhost.localdomain\n"));
2579 DEBUGADD(1, (" may end up being used instead of the real machine FQDN.\n"));
2586 DEBUG(10,("name_to_fqdn: lookup for %s -> %s.\n", name, full));
2587 fstrcpy(fqdn, full);
2591 /**********************************************************************
2592 Append a DATA_BLOB to a talloc'ed object
2593 ***********************************************************************/
2595 void *talloc_append_blob(TALLOC_CTX *mem_ctx, void *buf, DATA_BLOB blob)
2597 size_t old_size = 0;
2600 if (blob.length == 0) {
2605 old_size = talloc_get_size(buf);
2608 result = (char *)TALLOC_REALLOC(mem_ctx, buf, old_size + blob.length);
2609 if (result == NULL) {
2613 memcpy(result + old_size, blob.data, blob.length);
2617 uint32 map_share_mode_to_deny_mode(uint32 share_access, uint32 private_options)
2619 switch (share_access & ~FILE_SHARE_DELETE) {
2620 case FILE_SHARE_NONE:
2622 case FILE_SHARE_READ:
2624 case FILE_SHARE_WRITE:
2626 case FILE_SHARE_READ|FILE_SHARE_WRITE:
2629 if (private_options & NTCREATEX_OPTIONS_PRIVATE_DENY_DOS) {
2631 } else if (private_options & NTCREATEX_OPTIONS_PRIVATE_DENY_FCB) {
2638 pid_t procid_to_pid(const struct server_id *proc)
2643 static uint32 my_vnn = NONCLUSTER_VNN;
2645 void set_my_vnn(uint32 vnn)
2647 DEBUG(10, ("vnn pid %d = %u\n", (int)sys_getpid(), (unsigned int)vnn));
2651 uint32 get_my_vnn(void)
2656 struct server_id pid_to_procid(pid_t pid)
2658 struct server_id result;
2660 #ifdef CLUSTER_SUPPORT
2661 result.vnn = my_vnn;
2666 struct server_id procid_self(void)
2668 return pid_to_procid(sys_getpid());
2671 struct server_id server_id_self(void)
2673 return procid_self();
2676 bool procid_equal(const struct server_id *p1, const struct server_id *p2)
2678 if (p1->pid != p2->pid)
2680 #ifdef CLUSTER_SUPPORT
2681 if (p1->vnn != p2->vnn)
2687 bool cluster_id_equal(const struct server_id *id1,
2688 const struct server_id *id2)
2690 return procid_equal(id1, id2);
2693 bool procid_is_me(const struct server_id *pid)
2695 if (pid->pid != sys_getpid())
2697 #ifdef CLUSTER_SUPPORT
2698 if (pid->vnn != my_vnn)
2704 struct server_id interpret_pid(const char *pid_string)
2706 #ifdef CLUSTER_SUPPORT
2707 unsigned int vnn, pid;
2708 struct server_id result;
2709 if (sscanf(pid_string, "%u:%u", &vnn, &pid) == 2) {
2713 else if (sscanf(pid_string, "%u", &pid) == 1) {
2714 result.vnn = get_my_vnn();
2718 result.vnn = NONCLUSTER_VNN;
2723 return pid_to_procid(atoi(pid_string));
2727 char *procid_str(TALLOC_CTX *mem_ctx, const struct server_id *pid)
2729 #ifdef CLUSTER_SUPPORT
2730 if (pid->vnn == NONCLUSTER_VNN) {
2731 return talloc_asprintf(mem_ctx,
2736 return talloc_asprintf(mem_ctx,
2742 return talloc_asprintf(mem_ctx,
2748 char *procid_str_static(const struct server_id *pid)
2750 return procid_str(talloc_tos(), pid);
2753 bool procid_valid(const struct server_id *pid)
2755 return (pid->pid != -1);
2758 bool procid_is_local(const struct server_id *pid)
2760 #ifdef CLUSTER_SUPPORT
2761 return pid->vnn == my_vnn;
2767 int this_is_smp(void)
2769 #if defined(HAVE_SYSCONF)
2771 #if defined(SYSCONF_SC_NPROC_ONLN)
2772 return (sysconf(_SC_NPROC_ONLN) > 1) ? 1 : 0;
2773 #elif defined(SYSCONF_SC_NPROCESSORS_ONLN)
2774 return (sysconf(_SC_NPROCESSORS_ONLN) > 1) ? 1 : 0;
2784 /****************************************************************
2785 Check if offset/length fit into bufsize. Should probably be
2786 merged with is_offset_safe, but this would require a rewrite
2787 of lanman.c. Later :-)
2788 ****************************************************************/
2790 bool trans_oob(uint32_t bufsize, uint32_t offset, uint32_t length)
2792 if ((offset + length < offset) || (offset + length < length)) {
2796 if ((offset > bufsize) || (offset + length > bufsize)) {
2803 /****************************************************************
2804 Check if an offset into a buffer is safe.
2805 If this returns True it's safe to indirect into the byte at
2807 ****************************************************************/
2809 bool is_offset_safe(const char *buf_base, size_t buf_len, char *ptr, size_t off)
2811 const char *end_base = buf_base + buf_len;
2812 char *end_ptr = ptr + off;
2814 if (!buf_base || !ptr) {
2818 if (end_base < buf_base || end_ptr < ptr) {
2819 return False; /* wrap. */
2822 if (end_ptr < end_base) {
2828 /****************************************************************
2829 Return a safe pointer into a buffer, or NULL.
2830 ****************************************************************/
2832 char *get_safe_ptr(const char *buf_base, size_t buf_len, char *ptr, size_t off)
2834 return is_offset_safe(buf_base, buf_len, ptr, off) ?
2838 /****************************************************************
2839 Return a safe pointer into a string within a buffer, or NULL.
2840 ****************************************************************/
2842 char *get_safe_str_ptr(const char *buf_base, size_t buf_len, char *ptr, size_t off)
2844 if (!is_offset_safe(buf_base, buf_len, ptr, off)) {
2847 /* Check if a valid string exists at this offset. */
2848 if (skip_string(buf_base,buf_len, ptr + off) == NULL) {
2854 /****************************************************************
2855 Return an SVAL at a pointer, or failval if beyond the end.
2856 ****************************************************************/
2858 int get_safe_SVAL(const char *buf_base, size_t buf_len, char *ptr, size_t off, int failval)
2861 * Note we use off+1 here, not off+2 as SVAL accesses ptr[0] and ptr[1],
2864 if (!is_offset_safe(buf_base, buf_len, ptr, off+1)) {
2867 return SVAL(ptr,off);
2870 /****************************************************************
2871 Return an IVAL at a pointer, or failval if beyond the end.
2872 ****************************************************************/
2874 int get_safe_IVAL(const char *buf_base, size_t buf_len, char *ptr, size_t off, int failval)
2877 * Note we use off+3 here, not off+4 as IVAL accesses
2878 * ptr[0] ptr[1] ptr[2] ptr[3] NOT ptr[4].
2880 if (!is_offset_safe(buf_base, buf_len, ptr, off+3)) {
2883 return IVAL(ptr,off);
2886 /****************************************************************
2887 Split DOM\user into DOM and user. Do not mix with winbind variants of that
2888 call (they take care of winbind separator and other winbind specific settings).
2889 ****************************************************************/
2891 void split_domain_user(TALLOC_CTX *mem_ctx,
2892 const char *full_name,
2896 const char *p = NULL;
2898 p = strchr_m(full_name, '\\');
2901 *domain = talloc_strndup(mem_ctx, full_name,
2902 PTR_DIFF(p, full_name));
2903 *user = talloc_strdup(mem_ctx, p+1);
2905 *domain = talloc_strdup(mem_ctx, "");
2906 *user = talloc_strdup(mem_ctx, full_name);
2912 Disable these now we have checked all code paths and ensured
2913 NULL returns on zero request. JRA.
2915 /****************************************************************
2916 talloc wrapper functions that guarentee a null pointer return
2918 ****************************************************************/
2920 #ifndef MAX_TALLOC_SIZE
2921 #define MAX_TALLOC_SIZE 0x10000000
2925 * talloc and zero memory.
2926 * - returns NULL if size is zero.
2929 void *_talloc_zero_zeronull(const void *ctx, size_t size, const char *name)
2937 p = talloc_named_const(ctx, size, name);
2940 memset(p, '\0', size);
2947 * memdup with a talloc.
2948 * - returns NULL if size is zero.
2951 void *_talloc_memdup_zeronull(const void *t, const void *p, size_t size, const char *name)
2959 newp = talloc_named_const(t, size, name);
2961 memcpy(newp, p, size);
2968 * alloc an array, checking for integer overflow in the array size.
2969 * - returns NULL if count or el_size are zero.
2972 void *_talloc_array_zeronull(const void *ctx, size_t el_size, unsigned count, const char *name)
2974 if (count >= MAX_TALLOC_SIZE/el_size) {
2978 if (el_size == 0 || count == 0) {
2982 return talloc_named_const(ctx, el_size * count, name);
2986 * alloc an zero array, checking for integer overflow in the array size
2987 * - returns NULL if count or el_size are zero.
2990 void *_talloc_zero_array_zeronull(const void *ctx, size_t el_size, unsigned count, const char *name)
2992 if (count >= MAX_TALLOC_SIZE/el_size) {
2996 if (el_size == 0 || count == 0) {
3000 return _talloc_zero(ctx, el_size * count, name);
3004 * Talloc wrapper that returns NULL if size == 0.
3006 void *talloc_zeronull(const void *context, size_t size, const char *name)
3011 return talloc_named_const(context, size, name);
3015 /* Split a path name into filename and stream name components. Canonicalise
3016 * such that an implicit $DATA token is always explicit.
3018 * The "specification" of this function can be found in the
3019 * run_local_stream_name() function in torture.c, I've tried those
3020 * combinations against a W2k3 server.
3023 NTSTATUS split_ntfs_stream_name(TALLOC_CTX *mem_ctx, const char *fname,
3024 char **pbase, char **pstream)
3027 char *stream = NULL;
3028 char *sname; /* stream name */
3029 const char *stype; /* stream type */
3031 DEBUG(10, ("split_ntfs_stream_name called for [%s]\n", fname));
3033 sname = strchr_m(fname, ':');
3035 if (lp_posix_pathnames() || (sname == NULL)) {
3036 if (pbase != NULL) {
3037 base = talloc_strdup(mem_ctx, fname);
3038 NT_STATUS_HAVE_NO_MEMORY(base);
3043 if (pbase != NULL) {
3044 base = talloc_strndup(mem_ctx, fname, PTR_DIFF(sname, fname));
3045 NT_STATUS_HAVE_NO_MEMORY(base);
3050 stype = strchr_m(sname, ':');
3052 if (stype == NULL) {
3053 sname = talloc_strdup(mem_ctx, sname);
3057 if (StrCaseCmp(stype, ":$DATA") != 0) {
3059 * If there is an explicit stream type, so far we only
3060 * allow $DATA. Is there anything else allowed? -- vl
3062 DEBUG(10, ("[%s] is an invalid stream type\n", stype));
3064 return NT_STATUS_OBJECT_NAME_INVALID;
3066 sname = talloc_strndup(mem_ctx, sname, PTR_DIFF(stype, sname));
3070 if (sname == NULL) {
3072 return NT_STATUS_NO_MEMORY;
3075 if (sname[0] == '\0') {
3077 * no stream name, so no stream
3082 if (pstream != NULL) {
3083 stream = talloc_asprintf(mem_ctx, "%s:%s", sname, stype);
3084 if (stream == NULL) {
3087 return NT_STATUS_NO_MEMORY;
3090 * upper-case the type field
3092 strupper_m(strchr_m(stream, ':')+1);
3096 if (pbase != NULL) {
3099 if (pstream != NULL) {
3102 return NT_STATUS_OK;
3105 bool is_valid_policy_hnd(const POLICY_HND *hnd)
3109 return (memcmp(&tmp, hnd, sizeof(tmp)) != 0);
3112 bool policy_hnd_equal(const struct policy_handle *hnd1,
3113 const struct policy_handle *hnd2)
3115 if (!hnd1 || !hnd2) {
3119 return (memcmp(hnd1, hnd2, sizeof(*hnd1)) == 0);
3122 /****************************************************************
3123 strip off leading '\\' from a hostname
3124 ****************************************************************/
3126 const char *strip_hostname(const char *s)
3132 if (strlen_m(s) < 3) {
3136 if (s[0] == '\\') s++;
3137 if (s[0] == '\\') s++;