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 static enum protocol_types Protocol = PROTOCOL_COREPLUS;
60 enum protocol_types get_Protocol(void)
65 void set_Protocol(enum protocol_types p)
70 static enum remote_arch_types ra_type = RA_UNKNOWN;
72 /***********************************************************************
73 Definitions for all names.
74 ***********************************************************************/
76 static char *smb_scope;
77 static int smb_num_netbios_names;
78 static char **smb_my_netbios_names;
80 /***********************************************************************
81 Allocate and set scope. Ensure upper case.
82 ***********************************************************************/
84 bool set_global_scope(const char *scope)
87 smb_scope = SMB_STRDUP(scope);
90 strupper_m(smb_scope);
94 /*********************************************************************
95 Ensure scope is never null string.
96 *********************************************************************/
98 const char *global_scope(void)
101 set_global_scope("");
105 static void free_netbios_names_array(void)
109 for (i = 0; i < smb_num_netbios_names; i++)
110 SAFE_FREE(smb_my_netbios_names[i]);
112 SAFE_FREE(smb_my_netbios_names);
113 smb_num_netbios_names = 0;
116 static bool allocate_my_netbios_names_array(size_t number)
118 free_netbios_names_array();
120 smb_num_netbios_names = number + 1;
121 smb_my_netbios_names = SMB_MALLOC_ARRAY( char *, smb_num_netbios_names );
123 if (!smb_my_netbios_names)
126 memset(smb_my_netbios_names, '\0', sizeof(char *) * smb_num_netbios_names);
130 static bool set_my_netbios_names(const char *name, int i)
132 SAFE_FREE(smb_my_netbios_names[i]);
134 smb_my_netbios_names[i] = SMB_STRDUP(name);
135 if (!smb_my_netbios_names[i])
137 strupper_m(smb_my_netbios_names[i]);
141 /***********************************************************************
142 Free memory allocated to global objects
143 ***********************************************************************/
145 void gfree_names(void)
147 gfree_netbios_names();
148 SAFE_FREE( smb_scope );
149 free_netbios_names_array();
150 free_local_machine_name();
153 void gfree_all( void )
163 const char *my_netbios_names(int i)
165 return smb_my_netbios_names[i];
168 bool set_netbios_aliases(const char **str_array)
172 /* Work out the max number of netbios aliases that we have */
173 for( namecount=0; str_array && (str_array[namecount] != NULL); namecount++ )
176 if ( global_myname() && *global_myname())
179 /* Allocate space for the netbios aliases */
180 if (!allocate_my_netbios_names_array(namecount))
183 /* Use the global_myname string first */
185 if ( global_myname() && *global_myname()) {
186 set_my_netbios_names( global_myname(), namecount );
192 for ( i = 0; str_array[i] != NULL; i++) {
194 bool duplicate = False;
196 /* Look for duplicates */
197 for( n=0; n<namecount; n++ ) {
198 if( strequal( str_array[i], my_netbios_names(n) ) ) {
204 if (!set_my_netbios_names(str_array[i], namecount))
213 /****************************************************************************
214 Common name initialization code.
215 ****************************************************************************/
217 bool init_names(void)
221 if (global_myname() == NULL || *global_myname() == '\0') {
222 if (!set_global_myname(myhostname())) {
223 DEBUG( 0, ( "init_structs: malloc fail.\n" ) );
228 if (!set_netbios_aliases(lp_netbios_aliases())) {
229 DEBUG( 0, ( "init_structs: malloc fail.\n" ) );
233 set_local_machine_name(global_myname(),false);
235 DEBUG( 5, ("Netbios name list:-\n") );
236 for( n=0; my_netbios_names(n); n++ ) {
237 DEBUGADD( 5, ("my_netbios_names[%d]=\"%s\"\n",
238 n, my_netbios_names(n) ) );
244 /**************************************************************************n
245 Code to cope with username/password auth options from the commandline.
246 Used mainly in client tools.
247 ****************************************************************************/
249 struct user_auth_info *user_auth_info_init(TALLOC_CTX *mem_ctx)
251 struct user_auth_info *result;
253 result = TALLOC_ZERO_P(mem_ctx, struct user_auth_info);
254 if (result == NULL) {
258 result->signing_state = Undefined;
262 const char *get_cmdline_auth_info_username(const struct user_auth_info *auth_info)
264 if (!auth_info->username) {
267 return auth_info->username;
270 void set_cmdline_auth_info_username(struct user_auth_info *auth_info,
271 const char *username)
273 TALLOC_FREE(auth_info->username);
274 auth_info->username = talloc_strdup(auth_info, username);
275 if (!auth_info->username) {
280 const char *get_cmdline_auth_info_domain(const struct user_auth_info *auth_info)
282 if (!auth_info->domain) {
285 return auth_info->domain;
288 void set_cmdline_auth_info_domain(struct user_auth_info *auth_info,
291 TALLOC_FREE(auth_info->domain);
292 auth_info->domain = talloc_strdup(auth_info, domain);
293 if (!auth_info->domain) {
298 const char *get_cmdline_auth_info_password(const struct user_auth_info *auth_info)
300 if (!auth_info->password) {
303 return auth_info->password;
306 void set_cmdline_auth_info_password(struct user_auth_info *auth_info,
307 const char *password)
309 TALLOC_FREE(auth_info->password);
310 if (password == NULL) {
313 auth_info->password = talloc_strdup(auth_info, password);
314 if (!auth_info->password) {
317 auth_info->got_pass = true;
320 bool set_cmdline_auth_info_signing_state(struct user_auth_info *auth_info,
323 auth_info->signing_state = -1;
324 if (strequal(arg, "off") || strequal(arg, "no") ||
325 strequal(arg, "false")) {
326 auth_info->signing_state = false;
327 } else if (strequal(arg, "on") || strequal(arg, "yes") ||
328 strequal(arg, "true") || strequal(arg, "auto")) {
329 auth_info->signing_state = true;
330 } else if (strequal(arg, "force") || strequal(arg, "required") ||
331 strequal(arg, "forced")) {
332 auth_info->signing_state = Required;
339 int get_cmdline_auth_info_signing_state(const struct user_auth_info *auth_info)
341 return auth_info->signing_state;
344 void set_cmdline_auth_info_use_ccache(struct user_auth_info *auth_info, bool b)
346 auth_info->use_ccache = b;
349 bool get_cmdline_auth_info_use_ccache(const struct user_auth_info *auth_info)
351 return auth_info->use_ccache;
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 void set_cmdline_auth_info_fallback_after_kerberos(struct user_auth_info *auth_info,
368 auth_info->fallback_after_kerberos = b;
371 bool get_cmdline_auth_info_fallback_after_kerberos(const struct user_auth_info *auth_info)
373 return auth_info->fallback_after_kerberos;
376 /* This should only be used by lib/popt_common.c JRA */
377 void set_cmdline_auth_info_use_krb5_ticket(struct user_auth_info *auth_info)
379 auth_info->use_kerberos = true;
380 auth_info->got_pass = true;
383 /* This should only be used by lib/popt_common.c JRA */
384 void set_cmdline_auth_info_smb_encrypt(struct user_auth_info *auth_info)
386 auth_info->smb_encrypt = true;
389 void set_cmdline_auth_info_use_machine_account(struct user_auth_info *auth_info)
391 auth_info->use_machine_account = true;
394 bool get_cmdline_auth_info_got_pass(const struct user_auth_info *auth_info)
396 return auth_info->got_pass;
399 bool get_cmdline_auth_info_smb_encrypt(const struct user_auth_info *auth_info)
401 return auth_info->smb_encrypt;
404 bool get_cmdline_auth_info_use_machine_account(const struct user_auth_info *auth_info)
406 return auth_info->use_machine_account;
409 struct user_auth_info *get_cmdline_auth_info_copy(TALLOC_CTX *mem_ctx,
410 const struct user_auth_info *src)
412 struct user_auth_info *result;
414 result = user_auth_info_init(mem_ctx);
415 if (result == NULL) {
421 result->username = talloc_strdup(
422 result, get_cmdline_auth_info_username(src));
423 result->password = talloc_strdup(
424 result, get_cmdline_auth_info_password(src));
425 if ((result->username == NULL) || (result->password == NULL)) {
433 bool set_cmdline_auth_info_machine_account_creds(struct user_auth_info *auth_info)
436 char *account = NULL;
438 if (!get_cmdline_auth_info_use_machine_account(auth_info)) {
442 if (!secrets_init()) {
443 d_printf("ERROR: Unable to open secrets database\n");
447 if (asprintf(&account, "%s$@%s", global_myname(), lp_realm()) < 0) {
451 pass = secrets_fetch_machine_password(lp_workgroup(), NULL, NULL);
453 d_printf("ERROR: Unable to fetch machine password for "
455 account, lp_workgroup());
460 set_cmdline_auth_info_username(auth_info, account);
461 set_cmdline_auth_info_password(auth_info, pass);
469 /****************************************************************************
470 Ensure we have a password if one not given.
471 ****************************************************************************/
473 void set_cmdline_auth_info_getpass(struct user_auth_info *auth_info)
479 if (get_cmdline_auth_info_got_pass(auth_info) ||
480 get_cmdline_auth_info_use_kerberos(auth_info)) {
481 /* Already got one... */
485 frame = talloc_stackframe();
486 label = talloc_asprintf(frame, "Enter %s's password: ",
487 get_cmdline_auth_info_username(auth_info));
488 pass = getpass(label);
490 set_cmdline_auth_info_password(auth_info, pass);
495 /*******************************************************************
496 Check if a file exists - call vfs_file_exist for samba files.
497 ********************************************************************/
499 bool file_exist_stat(const char *fname,SMB_STRUCT_STAT *sbuf,
500 bool fake_dir_create_times)
506 if (sys_stat(fname, sbuf, fake_dir_create_times) != 0)
509 return((S_ISREG(sbuf->st_ex_mode)) || (S_ISFIFO(sbuf->st_ex_mode)));
512 /*******************************************************************
513 Check if a unix domain socket exists - call vfs_file_exist for samba files.
514 ********************************************************************/
516 bool socket_exist(const char *fname)
519 if (sys_stat(fname, &st, false) != 0)
522 return S_ISSOCK(st.st_ex_mode);
525 /*******************************************************************
526 Returns the size in bytes of the named given the stat struct.
527 ********************************************************************/
529 uint64_t get_file_size_stat(const SMB_STRUCT_STAT *sbuf)
531 return sbuf->st_ex_size;
534 /*******************************************************************
535 Returns the size in bytes of the named file.
536 ********************************************************************/
538 SMB_OFF_T get_file_size(char *file_name)
542 if (sys_stat(file_name, &buf, false) != 0)
543 return (SMB_OFF_T)-1;
544 return get_file_size_stat(&buf);
547 /*******************************************************************
548 Return a string representing an attribute for a file.
549 ********************************************************************/
551 char *attrib_string(uint16 mode)
557 if (mode & aVOLID) fstrcat(attrstr,"V");
558 if (mode & aDIR) fstrcat(attrstr,"D");
559 if (mode & aARCH) fstrcat(attrstr,"A");
560 if (mode & aHIDDEN) fstrcat(attrstr,"H");
561 if (mode & aSYSTEM) fstrcat(attrstr,"S");
562 if (mode & aRONLY) fstrcat(attrstr,"R");
564 return talloc_strdup(talloc_tos(), attrstr);
567 /*******************************************************************
568 Show a smb message structure.
569 ********************************************************************/
571 void show_msg(char *buf)
579 DEBUG(5,("size=%d\nsmb_com=0x%x\nsmb_rcls=%d\nsmb_reh=%d\nsmb_err=%d\nsmb_flg=%d\nsmb_flg2=%d\n",
581 (int)CVAL(buf,smb_com),
582 (int)CVAL(buf,smb_rcls),
583 (int)CVAL(buf,smb_reh),
584 (int)SVAL(buf,smb_err),
585 (int)CVAL(buf,smb_flg),
586 (int)SVAL(buf,smb_flg2)));
587 DEBUGADD(5,("smb_tid=%d\nsmb_pid=%d\nsmb_uid=%d\nsmb_mid=%d\n",
588 (int)SVAL(buf,smb_tid),
589 (int)SVAL(buf,smb_pid),
590 (int)SVAL(buf,smb_uid),
591 (int)SVAL(buf,smb_mid)));
592 DEBUGADD(5,("smt_wct=%d\n",(int)CVAL(buf,smb_wct)));
594 for (i=0;i<(int)CVAL(buf,smb_wct);i++)
595 DEBUGADD(5,("smb_vwv[%2d]=%5d (0x%X)\n",i,
596 SVAL(buf,smb_vwv+2*i),SVAL(buf,smb_vwv+2*i)));
598 bcc = (int)SVAL(buf,smb_vwv+2*(CVAL(buf,smb_wct)));
600 DEBUGADD(5,("smb_bcc=%d\n",bcc));
608 dump_data(10, (uint8 *)smb_buf(buf), bcc);
611 /*******************************************************************
612 Set the length and marker of an encrypted smb packet.
613 ********************************************************************/
615 void smb_set_enclen(char *buf,int len,uint16 enc_ctx_num)
617 _smb_setlen(buf,len);
621 SSVAL(buf,6,enc_ctx_num);
624 /*******************************************************************
625 Set the length and marker of an smb packet.
626 ********************************************************************/
628 void smb_setlen(char *buf,int len)
630 _smb_setlen(buf,len);
638 /*******************************************************************
639 Setup only the byte count for a smb message.
640 ********************************************************************/
642 int set_message_bcc(char *buf,int num_bytes)
644 int num_words = CVAL(buf,smb_wct);
645 SSVAL(buf,smb_vwv + num_words*SIZEOFWORD,num_bytes);
646 _smb_setlen(buf,smb_size + num_words*2 + num_bytes - 4);
647 return (smb_size + num_words*2 + num_bytes);
650 /*******************************************************************
651 Add a data blob to the end of a smb_buf, adjusting bcc and smb_len.
652 Return the bytes added
653 ********************************************************************/
655 ssize_t message_push_blob(uint8 **outbuf, DATA_BLOB blob)
657 size_t newlen = smb_len(*outbuf) + 4 + blob.length;
660 if (!(tmp = TALLOC_REALLOC_ARRAY(NULL, *outbuf, uint8, newlen))) {
661 DEBUG(0, ("talloc failed\n"));
666 memcpy(tmp + smb_len(tmp) + 4, blob.data, blob.length);
667 set_message_bcc((char *)tmp, smb_buflen(tmp) + blob.length);
671 /*******************************************************************
672 Reduce a file name, removing .. elements.
673 ********************************************************************/
675 static char *dos_clean_name(TALLOC_CTX *ctx, const char *s)
680 DEBUG(3,("dos_clean_name [%s]\n",s));
682 /* remove any double slashes */
683 str = talloc_all_string_sub(ctx, s, "\\\\", "\\");
688 /* Remove leading .\\ characters */
689 if(strncmp(str, ".\\", 2) == 0) {
690 trim_string(str, ".\\", NULL);
692 str = talloc_strdup(ctx, ".\\");
699 while ((p = strstr_m(str,"\\..\\")) != NULL) {
705 if ((p=strrchr_m(str,'\\')) != NULL) {
710 str = talloc_asprintf(ctx,
719 trim_string(str,NULL,"\\..");
720 return talloc_all_string_sub(ctx, str, "\\.\\", "\\");
723 /*******************************************************************
724 Reduce a file name, removing .. elements.
725 ********************************************************************/
727 char *unix_clean_name(TALLOC_CTX *ctx, const char *s)
732 DEBUG(3,("unix_clean_name [%s]\n",s));
734 /* remove any double slashes */
735 str = talloc_all_string_sub(ctx, s, "//","/");
740 /* Remove leading ./ characters */
741 if(strncmp(str, "./", 2) == 0) {
742 trim_string(str, "./", NULL);
744 str = talloc_strdup(ctx, "./");
751 while ((p = strstr_m(str,"/../")) != NULL) {
757 if ((p=strrchr_m(str,'/')) != NULL) {
762 str = talloc_asprintf(ctx,
771 trim_string(str,NULL,"/..");
772 return talloc_all_string_sub(ctx, str, "/./", "/");
775 char *clean_name(TALLOC_CTX *ctx, const char *s)
777 char *str = dos_clean_name(ctx, s);
781 return unix_clean_name(ctx, str);
784 /*******************************************************************
785 Write data into an fd at a given offset. Ignore seek errors.
786 ********************************************************************/
788 ssize_t write_data_at_offset(int fd, const char *buffer, size_t N, SMB_OFF_T pos)
793 if (pos == (SMB_OFF_T)-1) {
794 return write_data(fd, buffer, N);
796 #if defined(HAVE_PWRITE) || defined(HAVE_PRWITE64)
798 ret = sys_pwrite(fd,buffer + total,N - total, pos);
799 if (ret == -1 && errno == ESPIPE) {
800 return write_data(fd, buffer + total,N - total);
803 DEBUG(0,("write_data_at_offset: write failure. Error = %s\n", strerror(errno) ));
812 return (ssize_t)total;
814 /* Use lseek and write_data. */
815 if (sys_lseek(fd, pos, SEEK_SET) == -1) {
816 if (errno != ESPIPE) {
820 return write_data(fd, buffer, N);
824 /*******************************************************************
825 Sleep for a specified number of milliseconds.
826 ********************************************************************/
828 void smb_msleep(unsigned int t)
830 #if defined(HAVE_NANOSLEEP)
831 struct timespec tval;
834 tval.tv_sec = t/1000;
835 tval.tv_nsec = 1000000*(t%1000);
839 ret = nanosleep(&tval, &tval);
840 } while (ret < 0 && errno == EINTR && (tval.tv_sec > 0 || tval.tv_nsec > 0));
842 unsigned int tdiff=0;
843 struct timeval tval,t1,t2;
850 tval.tv_sec = (t-tdiff)/1000;
851 tval.tv_usec = 1000*((t-tdiff)%1000);
853 /* Never wait for more than 1 sec. */
854 if (tval.tv_sec > 1) {
861 sys_select_intr(0,&fds,NULL,NULL,&tval);
864 if (t2.tv_sec < t1.tv_sec) {
865 /* Someone adjusted time... */
869 tdiff = TvalDiff(&t1,&t2);
874 NTSTATUS reinit_after_fork(struct messaging_context *msg_ctx,
875 struct event_context *ev_ctx,
876 bool parent_longlived)
878 NTSTATUS status = NT_STATUS_OK;
880 /* Reset the state of the random
881 * number generation system, so
882 * children do not get the same random
883 * numbers as each other */
884 set_need_random_reseed();
886 /* tdb needs special fork handling */
887 if (tdb_reopen_all(parent_longlived ? 1 : 0) == -1) {
888 DEBUG(0,("tdb_reopen_all failed.\n"));
889 status = NT_STATUS_OPEN_FAILED;
893 if (ev_ctx && tevent_re_initialise(ev_ctx) != 0) {
894 smb_panic(__location__ ": Failed to re-initialise event context");
899 * For clustering, we need to re-init our ctdbd connection after the
902 status = messaging_reinit(msg_ctx, procid_self());
903 if (!NT_STATUS_IS_OK(status)) {
904 DEBUG(0,("messaging_reinit() failed: %s\n",
912 #if defined(PARANOID_MALLOC_CHECKER)
914 /****************************************************************************
915 Internal malloc wrapper. Externally visible.
916 ****************************************************************************/
918 void *malloc_(size_t size)
925 #define malloc(s) __ERROR_DONT_USE_MALLOC_DIRECTLY
928 /****************************************************************************
929 Internal calloc wrapper. Not externally visible.
930 ****************************************************************************/
932 static void *calloc_(size_t count, size_t size)
934 if (size == 0 || count == 0) {
938 return calloc(count, size);
939 #define calloc(n,s) __ERROR_DONT_USE_CALLOC_DIRECTLY
942 /****************************************************************************
943 Internal realloc wrapper. Not externally visible.
944 ****************************************************************************/
946 static void *realloc_(void *ptr, size_t size)
949 return realloc(ptr, size);
950 #define realloc(p,s) __ERROR_DONT_USE_RELLOC_DIRECTLY
953 #endif /* PARANOID_MALLOC_CHECKER */
955 /****************************************************************************
957 ****************************************************************************/
959 void *memalign_array(size_t el_size, size_t align, unsigned int count)
961 if (count >= MAX_ALLOC_SIZE/el_size) {
965 return sys_memalign(align, el_size*count);
968 /****************************************************************************
970 ****************************************************************************/
972 void *calloc_array(size_t size, size_t nmemb)
974 if (nmemb >= MAX_ALLOC_SIZE/size) {
977 if (size == 0 || nmemb == 0) {
980 #if defined(PARANOID_MALLOC_CHECKER)
981 return calloc_(nmemb, size);
983 return calloc(nmemb, size);
987 /****************************************************************************
988 Expand a pointer to be a particular size.
989 Note that this version of Realloc has an extra parameter that decides
990 whether to free the passed in storage on allocation failure or if the
993 This is designed for use in the typical idiom of :
995 p = SMB_REALLOC(p, size)
1000 and not to have to keep track of the old 'p' contents to free later, nor
1001 to worry if the size parameter was zero. In the case where NULL is returned
1002 we guarentee that p has been freed.
1004 If free later semantics are desired, then pass 'free_old_on_error' as False which
1005 guarentees that the old contents are not freed on error, even if size == 0. To use
1008 tmp = SMB_REALLOC_KEEP_OLD_ON_ERROR(p, size);
1016 Changes were instigated by Coverity error checking. JRA.
1017 ****************************************************************************/
1019 void *Realloc(void *p, size_t size, bool free_old_on_error)
1024 if (free_old_on_error) {
1027 DEBUG(2,("Realloc asked for 0 bytes\n"));
1031 #if defined(PARANOID_MALLOC_CHECKER)
1033 ret = (void *)malloc_(size);
1035 ret = (void *)realloc_(p,size);
1039 ret = (void *)malloc(size);
1041 ret = (void *)realloc(p,size);
1046 if (free_old_on_error && p) {
1049 DEBUG(0,("Memory allocation error: failed to expand to %d bytes\n",(int)size));
1055 /****************************************************************************
1056 (Hopefully) efficient array append.
1057 ****************************************************************************/
1059 void add_to_large_array(TALLOC_CTX *mem_ctx, size_t element_size,
1060 void *element, void *_array, uint32 *num_elements,
1061 ssize_t *array_size)
1063 void **array = (void **)_array;
1065 if (*array_size < 0) {
1069 if (*array == NULL) {
1070 if (*array_size == 0) {
1074 if (*array_size >= MAX_ALLOC_SIZE/element_size) {
1078 *array = TALLOC(mem_ctx, element_size * (*array_size));
1079 if (*array == NULL) {
1084 if (*num_elements == *array_size) {
1087 if (*array_size >= MAX_ALLOC_SIZE/element_size) {
1091 *array = TALLOC_REALLOC(mem_ctx, *array,
1092 element_size * (*array_size));
1094 if (*array == NULL) {
1099 memcpy((char *)(*array) + element_size*(*num_elements),
1100 element, element_size);
1110 /****************************************************************************
1111 Get my own domain name, or "" if we have none.
1112 ****************************************************************************/
1114 char *get_mydnsdomname(TALLOC_CTX *ctx)
1116 const char *domname;
1119 domname = get_mydnsfullname();
1124 p = strchr_m(domname, '.');
1127 return talloc_strdup(ctx, p);
1129 return talloc_strdup(ctx, "");
1133 /****************************************************************************
1134 Interpret a protocol description string, with a default.
1135 ****************************************************************************/
1137 int interpret_protocol(const char *str,int def)
1139 if (strequal(str,"NT1"))
1140 return(PROTOCOL_NT1);
1141 if (strequal(str,"LANMAN2"))
1142 return(PROTOCOL_LANMAN2);
1143 if (strequal(str,"LANMAN1"))
1144 return(PROTOCOL_LANMAN1);
1145 if (strequal(str,"CORE"))
1146 return(PROTOCOL_CORE);
1147 if (strequal(str,"COREPLUS"))
1148 return(PROTOCOL_COREPLUS);
1149 if (strequal(str,"CORE+"))
1150 return(PROTOCOL_COREPLUS);
1152 DEBUG(0,("Unrecognised protocol level %s\n",str));
1158 #if (defined(HAVE_NETGROUP) && defined(WITH_AUTOMOUNT))
1159 /******************************************************************
1160 Remove any mount options such as -rsize=2048,wsize=2048 etc.
1161 Based on a fix from <Thomas.Hepper@icem.de>.
1162 Returns a malloc'ed string.
1163 *******************************************************************/
1165 static char *strip_mount_options(TALLOC_CTX *ctx, const char *str)
1168 const char *p = str;
1169 while(*p && !isspace(*p))
1171 while(*p && isspace(*p))
1174 return talloc_strdup(ctx, p);
1180 /*******************************************************************
1181 Patch from jkf@soton.ac.uk
1182 Split Luke's automount_server into YP lookup and string splitter
1183 so can easily implement automount_path().
1184 Returns a malloc'ed string.
1185 *******************************************************************/
1187 #ifdef WITH_NISPLUS_HOME
1188 char *automount_lookup(TALLOC_CTX *ctx, const char *user_name)
1192 char *nis_map = (char *)lp_nis_home_map_name();
1194 char buffer[NIS_MAXATTRVAL + 1];
1199 snprintf(buffer, sizeof(buffer), "[key=%s],%s", user_name, nis_map);
1200 DEBUG(5, ("NIS+ querystring: %s\n", buffer));
1202 if (result = nis_list(buffer, FOLLOW_PATH|EXPAND_NAME|HARD_LOOKUP, NULL, NULL)) {
1203 if (result->status != NIS_SUCCESS) {
1204 DEBUG(3, ("NIS+ query failed: %s\n", nis_sperrno(result->status)));
1206 object = result->objects.objects_val;
1207 if (object->zo_data.zo_type == ENTRY_OBJ) {
1208 entry = &object->zo_data.objdata_u.en_data;
1209 DEBUG(5, ("NIS+ entry type: %s\n", entry->en_type));
1210 DEBUG(3, ("NIS+ result: %s\n", entry->en_cols.en_cols_val[1].ec_value.ec_value_val));
1212 value = talloc_strdup(ctx,
1213 entry->en_cols.en_cols_val[1].ec_value.ec_value_val);
1215 nis_freeresult(result);
1218 value = talloc_string_sub(ctx,
1225 nis_freeresult(result);
1228 value = strip_mount_options(ctx, value);
1229 DEBUG(4, ("NIS+ Lookup: %s resulted in %s\n",
1234 #else /* WITH_NISPLUS_HOME */
1236 char *automount_lookup(TALLOC_CTX *ctx, const char *user_name)
1240 int nis_error; /* returned by yp all functions */
1241 char *nis_result; /* yp_match inits this */
1242 int nis_result_len; /* and set this */
1243 char *nis_domain; /* yp_get_default_domain inits this */
1244 char *nis_map = (char *)lp_nis_home_map_name();
1246 if ((nis_error = yp_get_default_domain(&nis_domain)) != 0) {
1247 DEBUG(3, ("YP Error: %s\n", yperr_string(nis_error)));
1251 DEBUG(5, ("NIS Domain: %s\n", nis_domain));
1253 if ((nis_error = yp_match(nis_domain, nis_map, user_name,
1254 strlen(user_name), &nis_result,
1255 &nis_result_len)) == 0) {
1256 if (nis_result_len > 0 && nis_result[nis_result_len] == '\n') {
1257 nis_result[nis_result_len] = '\0';
1259 value = talloc_strdup(ctx, nis_result);
1263 value = strip_mount_options(ctx, value);
1264 } else if(nis_error == YPERR_KEY) {
1265 DEBUG(3, ("YP Key not found: while looking up \"%s\" in map \"%s\"\n",
1266 user_name, nis_map));
1267 DEBUG(3, ("using defaults for server and home directory\n"));
1269 DEBUG(3, ("YP Error: \"%s\" while looking up \"%s\" in map \"%s\"\n",
1270 yperr_string(nis_error), user_name, nis_map));
1274 DEBUG(4, ("YP Lookup: %s resulted in %s\n", user_name, value));
1278 #endif /* WITH_NISPLUS_HOME */
1281 /****************************************************************************
1282 Check if a process exists. Does this work on all unixes?
1283 ****************************************************************************/
1285 bool process_exists(const struct server_id pid)
1287 if (procid_is_me(&pid)) {
1291 if (procid_is_local(&pid)) {
1292 return (kill(pid.pid,0) == 0 || errno != ESRCH);
1295 #ifdef CLUSTER_SUPPORT
1296 return ctdbd_process_exists(messaging_ctdbd_connection(), pid.vnn,
1303 /*******************************************************************
1304 Convert a uid into a user name.
1305 ********************************************************************/
1307 const char *uidtoname(uid_t uid)
1309 TALLOC_CTX *ctx = talloc_tos();
1311 struct passwd *pass = NULL;
1313 pass = getpwuid_alloc(ctx,uid);
1315 name = talloc_strdup(ctx,pass->pw_name);
1318 name = talloc_asprintf(ctx,
1325 /*******************************************************************
1326 Convert a gid into a group name.
1327 ********************************************************************/
1329 char *gidtoname(gid_t gid)
1333 grp = getgrgid(gid);
1335 return talloc_strdup(talloc_tos(), grp->gr_name);
1338 return talloc_asprintf(talloc_tos(),
1344 /*******************************************************************
1345 Convert a user name into a uid.
1346 ********************************************************************/
1348 uid_t nametouid(const char *name)
1350 struct passwd *pass;
1354 pass = getpwnam_alloc(talloc_autofree_context(), name);
1361 u = (uid_t)strtol(name, &p, 0);
1362 if ((p != name) && (*p == '\0'))
1368 /*******************************************************************
1369 Convert a name to a gid_t if possible. Return -1 if not a group.
1370 ********************************************************************/
1372 gid_t nametogid(const char *name)
1378 g = (gid_t)strtol(name, &p, 0);
1379 if ((p != name) && (*p == '\0'))
1382 grp = sys_getgrnam(name);
1384 return(grp->gr_gid);
1388 /*******************************************************************
1389 Something really nasty happened - panic !
1390 ********************************************************************/
1392 void smb_panic(const char *const why)
1400 if (global_clobber_region_function) {
1401 DEBUG(0,("smb_panic: clobber_region() last called from [%s(%u)]\n",
1402 global_clobber_region_function,
1403 global_clobber_region_line));
1408 DEBUG(0,("PANIC (pid %llu): %s\n",
1409 (unsigned long long)sys_getpid(), why));
1412 cmd = lp_panic_action();
1414 DEBUG(0, ("smb_panic(): calling panic action [%s]\n", cmd));
1415 result = system(cmd);
1418 DEBUG(0, ("smb_panic(): fork failed in panic action: %s\n",
1421 DEBUG(0, ("smb_panic(): action returned status %d\n",
1422 WEXITSTATUS(result)));
1428 /*******************************************************************
1429 Print a backtrace of the stack to the debug log. This function
1430 DELIBERATELY LEAKS MEMORY. The expectation is that you should
1431 exit shortly after calling it.
1432 ********************************************************************/
1434 #ifdef HAVE_LIBUNWIND_H
1435 #include <libunwind.h>
1438 #ifdef HAVE_EXECINFO_H
1439 #include <execinfo.h>
1442 #ifdef HAVE_LIBEXC_H
1446 void log_stack_trace(void)
1448 #ifdef HAVE_LIBUNWIND
1449 /* Try to use libunwind before any other technique since on ia64
1450 * libunwind correctly walks the stack in more circumstances than
1453 unw_cursor_t cursor;
1458 unw_word_t ip, sp, off;
1460 procname[sizeof(procname) - 1] = '\0';
1462 if (unw_getcontext(&uc) != 0) {
1463 goto libunwind_failed;
1466 if (unw_init_local(&cursor, &uc) != 0) {
1467 goto libunwind_failed;
1470 DEBUG(0, ("BACKTRACE:\n"));
1474 unw_get_reg(&cursor, UNW_REG_IP, &ip);
1475 unw_get_reg(&cursor, UNW_REG_SP, &sp);
1477 switch (unw_get_proc_name(&cursor,
1478 procname, sizeof(procname) - 1, &off) ) {
1482 /* Name truncated. */
1483 DEBUGADD(0, (" #%u %s + %#llx [ip=%#llx] [sp=%#llx]\n",
1484 i, procname, (long long)off,
1485 (long long)ip, (long long) sp));
1488 /* case -UNW_ENOINFO: */
1489 /* case -UNW_EUNSPEC: */
1490 /* No symbol name found. */
1491 DEBUGADD(0, (" #%u %s [ip=%#llx] [sp=%#llx]\n",
1492 i, "<unknown symbol>",
1493 (long long)ip, (long long) sp));
1496 } while (unw_step(&cursor) > 0);
1501 DEBUG(0, ("unable to produce a stack trace with libunwind\n"));
1503 #elif HAVE_BACKTRACE_SYMBOLS
1504 void *backtrace_stack[BACKTRACE_STACK_SIZE];
1505 size_t backtrace_size;
1506 char **backtrace_strings;
1508 /* get the backtrace (stack frames) */
1509 backtrace_size = backtrace(backtrace_stack,BACKTRACE_STACK_SIZE);
1510 backtrace_strings = backtrace_symbols(backtrace_stack, backtrace_size);
1512 DEBUG(0, ("BACKTRACE: %lu stack frames:\n",
1513 (unsigned long)backtrace_size));
1515 if (backtrace_strings) {
1518 for (i = 0; i < backtrace_size; i++)
1519 DEBUGADD(0, (" #%u %s\n", i, backtrace_strings[i]));
1521 /* Leak the backtrace_strings, rather than risk what free() might do */
1526 /* The IRIX libexc library provides an API for unwinding the stack. See
1527 * libexc(3) for details. Apparantly trace_back_stack leaks memory, but
1528 * since we are about to abort anyway, it hardly matters.
1531 #define NAMESIZE 32 /* Arbitrary */
1533 __uint64_t addrs[BACKTRACE_STACK_SIZE];
1534 char * names[BACKTRACE_STACK_SIZE];
1535 char namebuf[BACKTRACE_STACK_SIZE * NAMESIZE];
1542 ZERO_ARRAY(namebuf);
1544 /* We need to be root so we can open our /proc entry to walk
1545 * our stack. It also helps when we want to dump core.
1549 for (i = 0; i < BACKTRACE_STACK_SIZE; i++) {
1550 names[i] = namebuf + (i * NAMESIZE);
1553 levels = trace_back_stack(0, addrs, names,
1554 BACKTRACE_STACK_SIZE, NAMESIZE - 1);
1556 DEBUG(0, ("BACKTRACE: %d stack frames:\n", levels));
1557 for (i = 0; i < levels; i++) {
1558 DEBUGADD(0, (" #%d 0x%llx %s\n", i, addrs[i], names[i]));
1563 DEBUG(0, ("unable to produce a stack trace on this platform\n"));
1567 /*******************************************************************
1568 A readdir wrapper which just returns the file name.
1569 ********************************************************************/
1571 const char *readdirname(SMB_STRUCT_DIR *p)
1573 SMB_STRUCT_DIRENT *ptr;
1579 ptr = (SMB_STRUCT_DIRENT *)sys_readdir(p);
1583 dname = ptr->d_name;
1590 #ifdef HAVE_BROKEN_READDIR_NAME
1591 /* using /usr/ucb/cc is BAD */
1595 return talloc_strdup(talloc_tos(), dname);
1598 /*******************************************************************
1599 Utility function used to decide if the last component
1600 of a path matches a (possibly wildcarded) entry in a namelist.
1601 ********************************************************************/
1603 bool is_in_path(const char *name, name_compare_entry *namelist, bool case_sensitive)
1605 const char *last_component;
1607 /* if we have no list it's obviously not in the path */
1608 if((namelist == NULL ) || ((namelist != NULL) && (namelist[0].name == NULL))) {
1612 DEBUG(8, ("is_in_path: %s\n", name));
1614 /* Get the last component of the unix name. */
1615 last_component = strrchr_m(name, '/');
1616 if (!last_component) {
1617 last_component = name;
1619 last_component++; /* Go past '/' */
1622 for(; namelist->name != NULL; namelist++) {
1623 if(namelist->is_wild) {
1624 if (mask_match(last_component, namelist->name, case_sensitive)) {
1625 DEBUG(8,("is_in_path: mask match succeeded\n"));
1629 if((case_sensitive && (strcmp(last_component, namelist->name) == 0))||
1630 (!case_sensitive && (StrCaseCmp(last_component, namelist->name) == 0))) {
1631 DEBUG(8,("is_in_path: match succeeded\n"));
1636 DEBUG(8,("is_in_path: match not found\n"));
1640 /*******************************************************************
1641 Strip a '/' separated list into an array of
1642 name_compare_enties structures suitable for
1643 passing to is_in_path(). We do this for
1644 speed so we can pre-parse all the names in the list
1645 and don't do it for each call to is_in_path().
1646 namelist is modified here and is assumed to be
1647 a copy owned by the caller.
1648 We also check if the entry contains a wildcard to
1649 remove a potentially expensive call to mask_match
1651 ********************************************************************/
1653 void set_namearray(name_compare_entry **ppname_array, const char *namelist)
1656 char *nameptr = (char *)namelist;
1657 int num_entries = 0;
1660 (*ppname_array) = NULL;
1662 if((nameptr == NULL ) || ((nameptr != NULL) && (*nameptr == '\0')))
1665 /* We need to make two passes over the string. The
1666 first to count the number of elements, the second
1671 if ( *nameptr == '/' ) {
1672 /* cope with multiple (useless) /s) */
1676 /* anything left? */
1677 if ( *nameptr == '\0' )
1680 /* find the next '/' or consume remaining */
1681 name_end = strchr_m(nameptr, '/');
1682 if (name_end == NULL)
1683 name_end = (char *)nameptr + strlen(nameptr);
1685 /* next segment please */
1686 nameptr = name_end + 1;
1690 if(num_entries == 0)
1693 if(( (*ppname_array) = SMB_MALLOC_ARRAY(name_compare_entry, num_entries + 1)) == NULL) {
1694 DEBUG(0,("set_namearray: malloc fail\n"));
1698 /* Now copy out the names */
1699 nameptr = (char *)namelist;
1702 if ( *nameptr == '/' ) {
1703 /* cope with multiple (useless) /s) */
1707 /* anything left? */
1708 if ( *nameptr == '\0' )
1711 /* find the next '/' or consume remaining */
1712 name_end = strchr_m(nameptr, '/');
1716 name_end = nameptr + strlen(nameptr);
1718 (*ppname_array)[i].is_wild = ms_has_wild(nameptr);
1719 if(((*ppname_array)[i].name = SMB_STRDUP(nameptr)) == NULL) {
1720 DEBUG(0,("set_namearray: malloc fail (1)\n"));
1724 /* next segment please */
1725 nameptr = name_end + 1;
1729 (*ppname_array)[i].name = NULL;
1734 /****************************************************************************
1735 Routine to free a namearray.
1736 ****************************************************************************/
1738 void free_namearray(name_compare_entry *name_array)
1742 if(name_array == NULL)
1745 for(i=0; name_array[i].name!=NULL; i++)
1746 SAFE_FREE(name_array[i].name);
1747 SAFE_FREE(name_array);
1751 #define DBGC_CLASS DBGC_LOCKING
1753 /****************************************************************************
1754 Simple routine to query existing file locks. Cruft in NFS and 64->32 bit mapping
1755 is dealt with in posix.c
1756 Returns True if we have information regarding this lock region (and returns
1757 F_UNLCK in *ptype if the region is unlocked). False if the call failed.
1758 ****************************************************************************/
1760 bool fcntl_getlock(int fd, SMB_OFF_T *poffset, SMB_OFF_T *pcount, int *ptype, pid_t *ppid)
1762 SMB_STRUCT_FLOCK lock;
1765 DEBUG(8,("fcntl_getlock fd=%d offset=%.0f count=%.0f type=%d\n",
1766 fd,(double)*poffset,(double)*pcount,*ptype));
1768 lock.l_type = *ptype;
1769 lock.l_whence = SEEK_SET;
1770 lock.l_start = *poffset;
1771 lock.l_len = *pcount;
1774 ret = sys_fcntl_ptr(fd,SMB_F_GETLK,&lock);
1778 DEBUG(3,("fcntl_getlock: lock request failed at offset %.0f count %.0f type %d (%s)\n",
1779 (double)*poffset,(double)*pcount,*ptype,strerror(errno)));
1784 *ptype = lock.l_type;
1785 *poffset = lock.l_start;
1786 *pcount = lock.l_len;
1789 DEBUG(3,("fcntl_getlock: fd %d is returned info %d pid %u\n",
1790 fd, (int)lock.l_type, (unsigned int)lock.l_pid));
1795 #define DBGC_CLASS DBGC_ALL
1797 /*******************************************************************
1798 Is the name specified one of my netbios names.
1799 Returns true if it is equal, false otherwise.
1800 ********************************************************************/
1802 bool is_myname(const char *s)
1807 for (n=0; my_netbios_names(n); n++) {
1808 if (strequal(my_netbios_names(n), s)) {
1813 DEBUG(8, ("is_myname(\"%s\") returns %d\n", s, ret));
1817 /*******************************************************************
1818 Is the name specified our workgroup/domain.
1819 Returns true if it is equal, false otherwise.
1820 ********************************************************************/
1822 bool is_myworkgroup(const char *s)
1826 if (strequal(s, lp_workgroup())) {
1830 DEBUG(8, ("is_myworkgroup(\"%s\") returns %d\n", s, ret));
1834 /*******************************************************************
1835 we distinguish between 2K and XP by the "Native Lan Manager" string
1836 WinXP => "Windows 2002 5.1"
1837 WinXP 64bit => "Windows XP 5.2"
1838 Win2k => "Windows 2000 5.0"
1839 NT4 => "Windows NT 4.0"
1840 Win9x => "Windows 4.0"
1841 Windows 2003 doesn't set the native lan manager string but
1842 they do set the domain to "Windows 2003 5.2" (probably a bug).
1843 ********************************************************************/
1845 void ra_lanman_string( const char *native_lanman )
1847 if ( strcmp( native_lanman, "Windows 2002 5.1" ) == 0 )
1848 set_remote_arch( RA_WINXP );
1849 else if ( strcmp( native_lanman, "Windows XP 5.2" ) == 0 )
1850 set_remote_arch( RA_WINXP64 );
1851 else if ( strcmp( native_lanman, "Windows Server 2003 5.2" ) == 0 )
1852 set_remote_arch( RA_WIN2K3 );
1855 static const char *remote_arch_str;
1857 const char *get_remote_arch_str(void)
1859 if (!remote_arch_str) {
1862 return remote_arch_str;
1865 /*******************************************************************
1866 Set the horrid remote_arch string based on an enum.
1867 ********************************************************************/
1869 void set_remote_arch(enum remote_arch_types type)
1874 remote_arch_str = "WfWg";
1877 remote_arch_str = "OS2";
1880 remote_arch_str = "Win95";
1883 remote_arch_str = "WinNT";
1886 remote_arch_str = "Win2K";
1889 remote_arch_str = "WinXP";
1892 remote_arch_str = "WinXP64";
1895 remote_arch_str = "Win2K3";
1898 remote_arch_str = "Vista";
1901 remote_arch_str = "Samba";
1904 remote_arch_str = "CIFSFS";
1907 ra_type = RA_UNKNOWN;
1908 remote_arch_str = "UNKNOWN";
1912 DEBUG(10,("set_remote_arch: Client arch is \'%s\'\n",
1916 /*******************************************************************
1917 Get the remote_arch type.
1918 ********************************************************************/
1920 enum remote_arch_types get_remote_arch(void)
1925 const char *tab_depth(int level, int depth)
1927 if( CHECK_DEBUGLVL(level) ) {
1928 dbgtext("%*s", depth*4, "");
1933 /*****************************************************************************
1934 Provide a checksum on a string
1936 Input: s - the null-terminated character string for which the checksum
1939 Output: The checksum value calculated for s.
1940 *****************************************************************************/
1942 int str_checksum(const char *s)
1950 res ^= (c << (i % 15)) ^ (c >> (15-(i%15)));
1957 /*****************************************************************
1958 Zero a memory area then free it. Used to catch bugs faster.
1959 *****************************************************************/
1961 void zero_free(void *p, size_t size)
1967 /*****************************************************************
1968 Set our open file limit to a requested max and return the limit.
1969 *****************************************************************/
1971 int set_maxfiles(int requested_max)
1973 #if (defined(HAVE_GETRLIMIT) && defined(RLIMIT_NOFILE))
1975 int saved_current_limit;
1977 if(getrlimit(RLIMIT_NOFILE, &rlp)) {
1978 DEBUG(0,("set_maxfiles: getrlimit (1) for RLIMIT_NOFILE failed with error %s\n",
1981 return requested_max;
1985 * Set the fd limit to be real_max_open_files + MAX_OPEN_FUDGEFACTOR to
1986 * account for the extra fd we need
1987 * as well as the log files and standard
1988 * handles etc. Save the limit we want to set in case
1989 * we are running on an OS that doesn't support this limit (AIX)
1990 * which always returns RLIM_INFINITY for rlp.rlim_max.
1993 /* Try raising the hard (max) limit to the requested amount. */
1995 #if defined(RLIM_INFINITY)
1996 if (rlp.rlim_max != RLIM_INFINITY) {
1997 int orig_max = rlp.rlim_max;
1999 if ( rlp.rlim_max < requested_max )
2000 rlp.rlim_max = requested_max;
2002 /* This failing is not an error - many systems (Linux) don't
2003 support our default request of 10,000 open files. JRA. */
2005 if(setrlimit(RLIMIT_NOFILE, &rlp)) {
2006 DEBUG(3,("set_maxfiles: setrlimit for RLIMIT_NOFILE for %d max files failed with error %s\n",
2007 (int)rlp.rlim_max, strerror(errno) ));
2009 /* Set failed - restore original value from get. */
2010 rlp.rlim_max = orig_max;
2015 /* Now try setting the soft (current) limit. */
2017 saved_current_limit = rlp.rlim_cur = MIN(requested_max,rlp.rlim_max);
2019 if(setrlimit(RLIMIT_NOFILE, &rlp)) {
2020 DEBUG(0,("set_maxfiles: setrlimit for RLIMIT_NOFILE for %d files failed with error %s\n",
2021 (int)rlp.rlim_cur, strerror(errno) ));
2023 return saved_current_limit;
2026 if(getrlimit(RLIMIT_NOFILE, &rlp)) {
2027 DEBUG(0,("set_maxfiles: getrlimit (2) for RLIMIT_NOFILE failed with error %s\n",
2030 return saved_current_limit;
2033 #if defined(RLIM_INFINITY)
2034 if(rlp.rlim_cur == RLIM_INFINITY)
2035 return saved_current_limit;
2038 if((int)rlp.rlim_cur > saved_current_limit)
2039 return saved_current_limit;
2041 return rlp.rlim_cur;
2042 #else /* !defined(HAVE_GETRLIMIT) || !defined(RLIMIT_NOFILE) */
2044 * No way to know - just guess...
2046 return requested_max;
2050 /*****************************************************************
2051 malloc that aborts with smb_panic on fail or zero size.
2052 *****************************************************************/
2054 void *smb_xmalloc_array(size_t size, unsigned int count)
2058 smb_panic("smb_xmalloc_array: called with zero size");
2060 if (count >= MAX_ALLOC_SIZE/size) {
2061 smb_panic("smb_xmalloc_array: alloc size too large");
2063 if ((p = SMB_MALLOC(size*count)) == NULL) {
2064 DEBUG(0, ("smb_xmalloc_array failed to allocate %lu * %lu bytes\n",
2065 (unsigned long)size, (unsigned long)count));
2066 smb_panic("smb_xmalloc_array: malloc failed");
2072 vasprintf that aborts on malloc fail
2075 int smb_xvasprintf(char **ptr, const char *format, va_list ap)
2082 n = vasprintf(ptr, format, ap2);
2084 if (n == -1 || ! *ptr) {
2085 smb_panic("smb_xvasprintf: out of memory");
2090 /*****************************************************************
2091 Get local hostname and cache result.
2092 *****************************************************************/
2094 char *myhostname(void)
2098 /* This is cached forever so
2099 * use talloc_autofree_context() ctx. */
2100 ret = get_myname(talloc_autofree_context());
2106 * @brief Returns an absolute path to a file concatenating the provided
2107 * @a rootpath and @a basename
2109 * @param name Filename, relative to @a rootpath
2111 * @retval Pointer to a string containing the full path.
2114 static char *xx_path(const char *name, const char *rootpath)
2118 fname = talloc_strdup(talloc_tos(), rootpath);
2122 trim_string(fname,"","/");
2124 if (!directory_exist(fname)) {
2125 if (!mkdir(fname,0755))
2126 DEBUG(1, ("Unable to create directory %s for file %s. "
2127 "Error was %s\n", fname, name, strerror(errno)));
2130 return talloc_asprintf(talloc_tos(),
2137 * @brief Returns an absolute path to a file in the Samba lock directory.
2139 * @param name File to find, relative to LOCKDIR.
2141 * @retval Pointer to a talloc'ed string containing the full path.
2144 char *lock_path(const char *name)
2146 return xx_path(name, lp_lockdir());
2150 * @brief Returns an absolute path to a file in the Samba pid directory.
2152 * @param name File to find, relative to PIDDIR.
2154 * @retval Pointer to a talloc'ed string containing the full path.
2157 char *pid_path(const char *name)
2159 return xx_path(name, lp_piddir());
2163 * @brief Returns an absolute path to a file in the Samba lib directory.
2165 * @param name File to find, relative to LIBDIR.
2167 * @retval Pointer to a string containing the full path.
2170 char *lib_path(const char *name)
2172 return talloc_asprintf(talloc_tos(), "%s/%s", get_dyn_LIBDIR(), name);
2176 * @brief Returns an absolute path to a file in the Samba modules directory.
2178 * @param name File to find, relative to MODULESDIR.
2180 * @retval Pointer to a string containing the full path.
2183 char *modules_path(const char *name)
2185 return talloc_asprintf(talloc_tos(), "%s/%s", get_dyn_MODULESDIR(), name);
2189 * @brief Returns an absolute path to a file in the Samba data directory.
2191 * @param name File to find, relative to CODEPAGEDIR.
2193 * @retval Pointer to a talloc'ed string containing the full path.
2196 char *data_path(const char *name)
2198 return talloc_asprintf(talloc_tos(), "%s/%s", get_dyn_CODEPAGEDIR(), name);
2202 * @brief Returns an absolute path to a file in the Samba state directory.
2204 * @param name File to find, relative to STATEDIR.
2206 * @retval Pointer to a talloc'ed string containing the full path.
2209 char *state_path(const char *name)
2211 return xx_path(name, lp_statedir());
2215 * @brief Returns an absolute path to a file in the Samba cache directory.
2217 * @param name File to find, relative to CACHEDIR.
2219 * @retval Pointer to a talloc'ed string containing the full path.
2222 char *cache_path(const char *name)
2224 return xx_path(name, lp_cachedir());
2228 * @brief Returns the platform specific shared library extension.
2230 * @retval Pointer to a const char * containing the extension.
2233 const char *shlib_ext(void)
2235 return get_dyn_SHLIBEXT();
2238 /*******************************************************************
2239 Given a filename - get its directory name
2240 ********************************************************************/
2242 bool parent_dirname(TALLOC_CTX *mem_ctx, const char *dir, char **parent,
2248 p = strrchr_m(dir, '/'); /* Find final '/', if any */
2251 if (!(*parent = talloc_strdup(mem_ctx, "."))) {
2262 if (!(*parent = (char *)TALLOC_MEMDUP(mem_ctx, dir, len+1))) {
2265 (*parent)[len] = '\0';
2273 /*******************************************************************
2274 Determine if a pattern contains any Microsoft wildcard characters.
2275 *******************************************************************/
2277 bool ms_has_wild(const char *s)
2281 if (lp_posix_pathnames()) {
2282 /* With posix pathnames no characters are wild. */
2286 while ((c = *s++)) {
2299 bool ms_has_wild_w(const smb_ucs2_t *s)
2302 if (!s) return False;
2303 while ((c = *s++)) {
2305 case UCS2_CHAR('*'):
2306 case UCS2_CHAR('?'):
2307 case UCS2_CHAR('<'):
2308 case UCS2_CHAR('>'):
2309 case UCS2_CHAR('"'):
2316 /*******************************************************************
2317 A wrapper that handles case sensitivity and the special handling
2319 *******************************************************************/
2321 bool mask_match(const char *string, const char *pattern, bool is_case_sensitive)
2323 if (ISDOTDOT(string))
2328 return ms_fnmatch(pattern, string, Protocol <= PROTOCOL_LANMAN2, is_case_sensitive) == 0;
2331 /*******************************************************************
2332 A wrapper that handles case sensitivity and the special handling
2333 of the ".." name. Varient that is only called by old search code which requires
2334 pattern translation.
2335 *******************************************************************/
2337 bool mask_match_search(const char *string, const char *pattern, bool is_case_sensitive)
2339 if (ISDOTDOT(string))
2344 return ms_fnmatch(pattern, string, True, is_case_sensitive) == 0;
2347 /*******************************************************************
2348 A wrapper that handles a list of patters and calls mask_match()
2349 on each. Returns True if any of the patterns match.
2350 *******************************************************************/
2352 bool mask_match_list(const char *string, char **list, int listLen, bool is_case_sensitive)
2354 while (listLen-- > 0) {
2355 if (mask_match(string, *list++, is_case_sensitive))
2361 /*********************************************************
2362 Recursive routine that is called by unix_wild_match.
2363 *********************************************************/
2365 static bool unix_do_match(const char *regexp, const char *str)
2369 for( p = regexp; *p && *str; ) {
2380 * Look for a character matching
2381 * the one after the '*'.
2385 return true; /* Automatic match */
2388 while(*str && (*p != *str))
2392 * Patch from weidel@multichart.de. In the case of the regexp
2393 * '*XX*' we want to ensure there are at least 2 'X' characters
2394 * in the string after the '*' for a match to be made.
2401 * Eat all the characters that match, but count how many there were.
2404 while(*str && (*p == *str)) {
2410 * Now check that if the regexp had n identical characters that
2411 * matchcount had at least that many matches.
2414 while ( *(p+1) && (*(p+1) == *p)) {
2419 if ( matchcount <= 0 )
2423 str--; /* We've eaten the match char after the '*' */
2425 if(unix_do_match(p, str))
2447 if (!*p && str[0] == '.' && str[1] == 0)
2450 if (!*str && *p == '?') {
2456 if(!*str && (*p == '*' && p[1] == '\0'))
2462 /*******************************************************************
2463 Simple case insensitive interface to a UNIX wildcard matcher.
2464 Returns True if match, False if not.
2465 *******************************************************************/
2467 bool unix_wild_match(const char *pattern, const char *string)
2469 TALLOC_CTX *ctx = talloc_stackframe();
2475 p2 = talloc_strdup(ctx,pattern);
2476 s2 = talloc_strdup(ctx,string);
2484 /* Remove any *? and ** from the pattern as they are meaningless */
2485 for(p = p2; *p; p++) {
2486 while( *p == '*' && (p[1] == '?' ||p[1] == '*')) {
2487 memmove(&p[1], &p[2], strlen(&p[2])+1);
2491 if (strequal(p2,"*")) {
2496 ret = unix_do_match(p2, s2);
2501 /**********************************************************************
2502 Converts a name to a fully qualified domain name.
2503 Returns true if lookup succeeded, false if not (then fqdn is set to name)
2504 Note we deliberately use gethostbyname here, not getaddrinfo as we want
2505 to examine the h_aliases and I don't know how to do that with getaddrinfo.
2506 ***********************************************************************/
2508 bool name_to_fqdn(fstring fqdn, const char *name)
2511 struct hostent *hp = gethostbyname(name);
2513 if (!hp || !hp->h_name || !*hp->h_name) {
2514 DEBUG(10,("name_to_fqdn: lookup for %s failed.\n", name));
2515 fstrcpy(fqdn, name);
2519 /* Find out if the fqdn is returned as an alias
2520 * to cope with /etc/hosts files where the first
2521 * name is not the fqdn but the short name */
2522 if (hp->h_aliases && (! strchr_m(hp->h_name, '.'))) {
2524 for (i = 0; hp->h_aliases[i]; i++) {
2525 if (strchr_m(hp->h_aliases[i], '.')) {
2526 full = hp->h_aliases[i];
2531 if (full && (StrCaseCmp(full, "localhost.localdomain") == 0)) {
2532 DEBUG(1, ("WARNING: your /etc/hosts file may be broken!\n"));
2533 DEBUGADD(1, (" Specifing the machine hostname for address 127.0.0.1 may lead\n"));
2534 DEBUGADD(1, (" to Kerberos authentication problems as localhost.localdomain\n"));
2535 DEBUGADD(1, (" may end up being used instead of the real machine FQDN.\n"));
2542 DEBUG(10,("name_to_fqdn: lookup for %s -> %s.\n", name, full));
2543 fstrcpy(fqdn, full);
2547 /**********************************************************************
2548 Append a DATA_BLOB to a talloc'ed object
2549 ***********************************************************************/
2551 void *talloc_append_blob(TALLOC_CTX *mem_ctx, void *buf, DATA_BLOB blob)
2553 size_t old_size = 0;
2556 if (blob.length == 0) {
2561 old_size = talloc_get_size(buf);
2564 result = (char *)TALLOC_REALLOC(mem_ctx, buf, old_size + blob.length);
2565 if (result == NULL) {
2569 memcpy(result + old_size, blob.data, blob.length);
2573 uint32 map_share_mode_to_deny_mode(uint32 share_access, uint32 private_options)
2575 switch (share_access & ~FILE_SHARE_DELETE) {
2576 case FILE_SHARE_NONE:
2578 case FILE_SHARE_READ:
2580 case FILE_SHARE_WRITE:
2582 case FILE_SHARE_READ|FILE_SHARE_WRITE:
2585 if (private_options & NTCREATEX_OPTIONS_PRIVATE_DENY_DOS) {
2587 } else if (private_options & NTCREATEX_OPTIONS_PRIVATE_DENY_FCB) {
2594 pid_t procid_to_pid(const struct server_id *proc)
2599 static uint32 my_vnn = NONCLUSTER_VNN;
2601 void set_my_vnn(uint32 vnn)
2603 DEBUG(10, ("vnn pid %d = %u\n", (int)sys_getpid(), (unsigned int)vnn));
2607 uint32 get_my_vnn(void)
2612 static uint64_t my_unique_id = 0;
2614 void set_my_unique_id(uint64_t unique_id)
2616 my_unique_id = unique_id;
2619 struct server_id pid_to_procid(pid_t pid)
2621 struct server_id result;
2623 result.unique_id = my_unique_id;
2624 #ifdef CLUSTER_SUPPORT
2625 result.vnn = my_vnn;
2630 struct server_id procid_self(void)
2632 return pid_to_procid(sys_getpid());
2635 bool procid_equal(const struct server_id *p1, const struct server_id *p2)
2637 if (p1->pid != p2->pid)
2639 #ifdef CLUSTER_SUPPORT
2640 if (p1->vnn != p2->vnn)
2646 bool cluster_id_equal(const struct server_id *id1,
2647 const struct server_id *id2)
2649 return procid_equal(id1, id2);
2652 bool procid_is_me(const struct server_id *pid)
2654 if (pid->pid != sys_getpid())
2656 #ifdef CLUSTER_SUPPORT
2657 if (pid->vnn != my_vnn)
2663 struct server_id interpret_pid(const char *pid_string)
2665 struct server_id result;
2667 #ifdef CLUSTER_SUPPORT
2669 if (sscanf(pid_string, "%u:%d", &vnn, &pid) == 2) {
2673 else if (sscanf(pid_string, "%d", &pid) == 1) {
2674 result.vnn = get_my_vnn();
2678 result.vnn = NONCLUSTER_VNN;
2682 if (sscanf(pid_string, "%d", &pid) != 1) {
2688 /* Assigning to result.pid may have overflowed
2689 Map negative pid to -1: i.e. error */
2690 if (result.pid < 0) {
2693 result.unique_id = 0;
2697 char *procid_str(TALLOC_CTX *mem_ctx, const struct server_id *pid)
2699 #ifdef CLUSTER_SUPPORT
2700 if (pid->vnn == NONCLUSTER_VNN) {
2701 return talloc_asprintf(mem_ctx,
2706 return talloc_asprintf(mem_ctx,
2712 return talloc_asprintf(mem_ctx,
2718 char *procid_str_static(const struct server_id *pid)
2720 return procid_str(talloc_tos(), pid);
2723 bool procid_valid(const struct server_id *pid)
2725 return (pid->pid != -1);
2728 bool procid_is_local(const struct server_id *pid)
2730 #ifdef CLUSTER_SUPPORT
2731 return pid->vnn == my_vnn;
2737 int this_is_smp(void)
2739 #if defined(HAVE_SYSCONF)
2741 #if defined(SYSCONF_SC_NPROC_ONLN)
2742 return (sysconf(_SC_NPROC_ONLN) > 1) ? 1 : 0;
2743 #elif defined(SYSCONF_SC_NPROCESSORS_ONLN)
2744 return (sysconf(_SC_NPROCESSORS_ONLN) > 1) ? 1 : 0;
2754 /****************************************************************
2755 Check if offset/length fit into bufsize. Should probably be
2756 merged with is_offset_safe, but this would require a rewrite
2757 of lanman.c. Later :-)
2758 ****************************************************************/
2760 bool trans_oob(uint32_t bufsize, uint32_t offset, uint32_t length)
2762 if ((offset + length < offset) || (offset + length < length)) {
2766 if ((offset > bufsize) || (offset + length > bufsize)) {
2773 /****************************************************************
2774 Check if an offset into a buffer is safe.
2775 If this returns True it's safe to indirect into the byte at
2777 ****************************************************************/
2779 bool is_offset_safe(const char *buf_base, size_t buf_len, char *ptr, size_t off)
2781 const char *end_base = buf_base + buf_len;
2782 char *end_ptr = ptr + off;
2784 if (!buf_base || !ptr) {
2788 if (end_base < buf_base || end_ptr < ptr) {
2789 return False; /* wrap. */
2792 if (end_ptr < end_base) {
2798 /****************************************************************
2799 Return a safe pointer into a buffer, or NULL.
2800 ****************************************************************/
2802 char *get_safe_ptr(const char *buf_base, size_t buf_len, char *ptr, size_t off)
2804 return is_offset_safe(buf_base, buf_len, ptr, off) ?
2808 /****************************************************************
2809 Return a safe pointer into a string within a buffer, or NULL.
2810 ****************************************************************/
2812 char *get_safe_str_ptr(const char *buf_base, size_t buf_len, char *ptr, size_t off)
2814 if (!is_offset_safe(buf_base, buf_len, ptr, off)) {
2817 /* Check if a valid string exists at this offset. */
2818 if (skip_string(buf_base,buf_len, ptr + off) == NULL) {
2824 /****************************************************************
2825 Return an SVAL at a pointer, or failval if beyond the end.
2826 ****************************************************************/
2828 int get_safe_SVAL(const char *buf_base, size_t buf_len, char *ptr, size_t off, int failval)
2831 * Note we use off+1 here, not off+2 as SVAL accesses ptr[0] and ptr[1],
2834 if (!is_offset_safe(buf_base, buf_len, ptr, off+1)) {
2837 return SVAL(ptr,off);
2840 /****************************************************************
2841 Return an IVAL at a pointer, or failval if beyond the end.
2842 ****************************************************************/
2844 int get_safe_IVAL(const char *buf_base, size_t buf_len, char *ptr, size_t off, int failval)
2847 * Note we use off+3 here, not off+4 as IVAL accesses
2848 * ptr[0] ptr[1] ptr[2] ptr[3] NOT ptr[4].
2850 if (!is_offset_safe(buf_base, buf_len, ptr, off+3)) {
2853 return IVAL(ptr,off);
2856 /****************************************************************
2857 Split DOM\user into DOM and user. Do not mix with winbind variants of that
2858 call (they take care of winbind separator and other winbind specific settings).
2859 ****************************************************************/
2861 void split_domain_user(TALLOC_CTX *mem_ctx,
2862 const char *full_name,
2866 const char *p = NULL;
2868 p = strchr_m(full_name, '\\');
2871 *domain = talloc_strndup(mem_ctx, full_name,
2872 PTR_DIFF(p, full_name));
2873 *user = talloc_strdup(mem_ctx, p+1);
2875 *domain = talloc_strdup(mem_ctx, "");
2876 *user = talloc_strdup(mem_ctx, full_name);
2882 Disable these now we have checked all code paths and ensured
2883 NULL returns on zero request. JRA.
2885 /****************************************************************
2886 talloc wrapper functions that guarentee a null pointer return
2888 ****************************************************************/
2890 #ifndef MAX_TALLOC_SIZE
2891 #define MAX_TALLOC_SIZE 0x10000000
2895 * talloc and zero memory.
2896 * - returns NULL if size is zero.
2899 void *_talloc_zero_zeronull(const void *ctx, size_t size, const char *name)
2907 p = talloc_named_const(ctx, size, name);
2910 memset(p, '\0', size);
2917 * memdup with a talloc.
2918 * - returns NULL if size is zero.
2921 void *_talloc_memdup_zeronull(const void *t, const void *p, size_t size, const char *name)
2929 newp = talloc_named_const(t, size, name);
2931 memcpy(newp, p, size);
2938 * alloc an array, checking for integer overflow in the array size.
2939 * - returns NULL if count or el_size are zero.
2942 void *_talloc_array_zeronull(const void *ctx, size_t el_size, unsigned count, const char *name)
2944 if (count >= MAX_TALLOC_SIZE/el_size) {
2948 if (el_size == 0 || count == 0) {
2952 return talloc_named_const(ctx, el_size * count, name);
2956 * alloc an zero array, checking for integer overflow in the array size
2957 * - returns NULL if count or el_size are zero.
2960 void *_talloc_zero_array_zeronull(const void *ctx, size_t el_size, unsigned count, const char *name)
2962 if (count >= MAX_TALLOC_SIZE/el_size) {
2966 if (el_size == 0 || count == 0) {
2970 return _talloc_zero(ctx, el_size * count, name);
2974 * Talloc wrapper that returns NULL if size == 0.
2976 void *talloc_zeronull(const void *context, size_t size, const char *name)
2981 return talloc_named_const(context, size, name);
2985 bool is_valid_policy_hnd(const struct policy_handle *hnd)
2987 struct policy_handle tmp;
2989 return (memcmp(&tmp, hnd, sizeof(tmp)) != 0);
2992 bool policy_hnd_equal(const struct policy_handle *hnd1,
2993 const struct policy_handle *hnd2)
2995 if (!hnd1 || !hnd2) {
2999 return (memcmp(hnd1, hnd2, sizeof(*hnd1)) == 0);
3002 /****************************************************************
3003 strip off leading '\\' from a hostname
3004 ****************************************************************/
3006 const char *strip_hostname(const char *s)
3012 if (strlen_m(s) < 3) {
3016 if (s[0] == '\\') s++;
3017 if (s[0] == '\\') s++;
3022 bool tevent_req_poll_ntstatus(struct tevent_req *req,
3023 struct tevent_context *ev,
3026 bool ret = tevent_req_poll(req, ev);
3028 *status = map_nt_error_from_unix(errno);