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/>.
25 #include "popt_common.h"
28 extern char *global_clobber_region_function;
29 extern unsigned int global_clobber_region_line;
31 /* Max allowable allococation - 256mb - 0x10000000 */
32 #define MAX_ALLOC_SIZE (1024*1024*256)
34 #if (defined(HAVE_NETGROUP) && defined (WITH_AUTOMOUNT))
35 #ifdef WITH_NISPLUS_HOME
36 #ifdef BROKEN_NISPLUS_INCLUDE_FILES
38 * The following lines are needed due to buggy include files
39 * in Solaris 2.6 which define GROUP in both /usr/include/sys/acl.h and
40 * also in /usr/include/rpcsvc/nis.h. The definitions conflict. JRA.
41 * Also GROUP_OBJ is defined as 0x4 in /usr/include/sys/acl.h and as
42 * an enum in /usr/include/rpcsvc/nis.h.
49 #if defined(GROUP_OBJ)
53 #endif /* BROKEN_NISPLUS_INCLUDE_FILES */
55 #include <rpcsvc/nis.h>
57 #endif /* WITH_NISPLUS_HOME */
58 #endif /* HAVE_NETGROUP && WITH_AUTOMOUNT */
60 static enum protocol_types Protocol = PROTOCOL_COREPLUS;
62 enum protocol_types get_Protocol(void)
67 void set_Protocol(enum protocol_types p)
72 static enum remote_arch_types ra_type = RA_UNKNOWN;
74 /***********************************************************************
75 Definitions for all names.
76 ***********************************************************************/
78 static char *smb_scope;
79 static int smb_num_netbios_names;
80 static char **smb_my_netbios_names;
82 /***********************************************************************
83 Allocate and set scope. Ensure upper case.
84 ***********************************************************************/
86 bool set_global_scope(const char *scope)
89 smb_scope = SMB_STRDUP(scope);
92 strupper_m(smb_scope);
96 /*********************************************************************
97 Ensure scope is never null string.
98 *********************************************************************/
100 const char *global_scope(void)
103 set_global_scope("");
107 static void free_netbios_names_array(void)
111 for (i = 0; i < smb_num_netbios_names; i++)
112 SAFE_FREE(smb_my_netbios_names[i]);
114 SAFE_FREE(smb_my_netbios_names);
115 smb_num_netbios_names = 0;
118 static bool allocate_my_netbios_names_array(size_t number)
120 free_netbios_names_array();
122 smb_num_netbios_names = number + 1;
123 smb_my_netbios_names = SMB_MALLOC_ARRAY( char *, smb_num_netbios_names );
125 if (!smb_my_netbios_names)
128 memset(smb_my_netbios_names, '\0', sizeof(char *) * smb_num_netbios_names);
132 static bool set_my_netbios_names(const char *name, int i)
134 SAFE_FREE(smb_my_netbios_names[i]);
136 smb_my_netbios_names[i] = SMB_STRDUP(name);
137 if (!smb_my_netbios_names[i])
139 strupper_m(smb_my_netbios_names[i]);
143 /***********************************************************************
144 Free memory allocated to global objects
145 ***********************************************************************/
147 void gfree_names(void)
149 gfree_netbios_names();
150 SAFE_FREE( smb_scope );
151 free_netbios_names_array();
152 free_local_machine_name();
155 void gfree_all( void )
165 const char *my_netbios_names(int i)
167 return smb_my_netbios_names[i];
170 bool set_netbios_aliases(const char **str_array)
174 /* Work out the max number of netbios aliases that we have */
175 for( namecount=0; str_array && (str_array[namecount] != NULL); namecount++ )
178 if ( global_myname() && *global_myname())
181 /* Allocate space for the netbios aliases */
182 if (!allocate_my_netbios_names_array(namecount))
185 /* Use the global_myname string first */
187 if ( global_myname() && *global_myname()) {
188 set_my_netbios_names( global_myname(), namecount );
194 for ( i = 0; str_array[i] != NULL; i++) {
196 bool duplicate = False;
198 /* Look for duplicates */
199 for( n=0; n<namecount; n++ ) {
200 if( strequal( str_array[i], my_netbios_names(n) ) ) {
206 if (!set_my_netbios_names(str_array[i], namecount))
215 /****************************************************************************
216 Common name initialization code.
217 ****************************************************************************/
219 bool init_names(void)
223 if (global_myname() == NULL || *global_myname() == '\0') {
224 if (!set_global_myname(myhostname())) {
225 DEBUG( 0, ( "init_names: malloc fail.\n" ) );
230 if (!set_netbios_aliases(lp_netbios_aliases())) {
231 DEBUG( 0, ( "init_names: malloc fail.\n" ) );
235 set_local_machine_name(global_myname(),false);
237 DEBUG( 5, ("Netbios name list:-\n") );
238 for( n=0; my_netbios_names(n); n++ ) {
239 DEBUGADD( 5, ("my_netbios_names[%d]=\"%s\"\n",
240 n, my_netbios_names(n) ) );
246 /**************************************************************************n
247 Code to cope with username/password auth options from the commandline.
248 Used mainly in client tools.
249 ****************************************************************************/
251 struct user_auth_info *user_auth_info_init(TALLOC_CTX *mem_ctx)
253 struct user_auth_info *result;
255 result = TALLOC_ZERO_P(mem_ctx, struct user_auth_info);
256 if (result == NULL) {
260 result->signing_state = Undefined;
264 const char *get_cmdline_auth_info_username(const struct user_auth_info *auth_info)
266 if (!auth_info->username) {
269 return auth_info->username;
272 void set_cmdline_auth_info_username(struct user_auth_info *auth_info,
273 const char *username)
275 TALLOC_FREE(auth_info->username);
276 auth_info->username = talloc_strdup(auth_info, username);
277 if (!auth_info->username) {
282 const char *get_cmdline_auth_info_domain(const struct user_auth_info *auth_info)
284 if (!auth_info->domain) {
287 return auth_info->domain;
290 void set_cmdline_auth_info_domain(struct user_auth_info *auth_info,
293 TALLOC_FREE(auth_info->domain);
294 auth_info->domain = talloc_strdup(auth_info, domain);
295 if (!auth_info->domain) {
300 const char *get_cmdline_auth_info_password(const struct user_auth_info *auth_info)
302 if (!auth_info->password) {
305 return auth_info->password;
308 void set_cmdline_auth_info_password(struct user_auth_info *auth_info,
309 const char *password)
311 TALLOC_FREE(auth_info->password);
312 if (password == NULL) {
315 auth_info->password = talloc_strdup(auth_info, password);
316 if (!auth_info->password) {
319 auth_info->got_pass = true;
322 bool set_cmdline_auth_info_signing_state(struct user_auth_info *auth_info,
325 auth_info->signing_state = -1;
326 if (strequal(arg, "off") || strequal(arg, "no") ||
327 strequal(arg, "false")) {
328 auth_info->signing_state = false;
329 } else if (strequal(arg, "on") || strequal(arg, "yes") ||
330 strequal(arg, "true") || strequal(arg, "auto")) {
331 auth_info->signing_state = true;
332 } else if (strequal(arg, "force") || strequal(arg, "required") ||
333 strequal(arg, "forced")) {
334 auth_info->signing_state = Required;
341 int get_cmdline_auth_info_signing_state(const struct user_auth_info *auth_info)
343 return auth_info->signing_state;
346 void set_cmdline_auth_info_use_ccache(struct user_auth_info *auth_info, bool b)
348 auth_info->use_ccache = b;
351 bool get_cmdline_auth_info_use_ccache(const struct user_auth_info *auth_info)
353 return auth_info->use_ccache;
356 void set_cmdline_auth_info_use_kerberos(struct user_auth_info *auth_info,
359 auth_info->use_kerberos = b;
362 bool get_cmdline_auth_info_use_kerberos(const struct user_auth_info *auth_info)
364 return auth_info->use_kerberos;
367 void set_cmdline_auth_info_fallback_after_kerberos(struct user_auth_info *auth_info,
370 auth_info->fallback_after_kerberos = b;
373 bool get_cmdline_auth_info_fallback_after_kerberos(const struct user_auth_info *auth_info)
375 return auth_info->fallback_after_kerberos;
378 /* This should only be used by lib/popt_common.c JRA */
379 void set_cmdline_auth_info_use_krb5_ticket(struct user_auth_info *auth_info)
381 auth_info->use_kerberos = true;
382 auth_info->got_pass = true;
385 /* This should only be used by lib/popt_common.c JRA */
386 void set_cmdline_auth_info_smb_encrypt(struct user_auth_info *auth_info)
388 auth_info->smb_encrypt = true;
391 void set_cmdline_auth_info_use_machine_account(struct user_auth_info *auth_info)
393 auth_info->use_machine_account = true;
396 bool get_cmdline_auth_info_got_pass(const struct user_auth_info *auth_info)
398 return auth_info->got_pass;
401 bool get_cmdline_auth_info_smb_encrypt(const struct user_auth_info *auth_info)
403 return auth_info->smb_encrypt;
406 bool get_cmdline_auth_info_use_machine_account(const struct user_auth_info *auth_info)
408 return auth_info->use_machine_account;
411 struct user_auth_info *get_cmdline_auth_info_copy(TALLOC_CTX *mem_ctx,
412 const struct user_auth_info *src)
414 struct user_auth_info *result;
416 result = user_auth_info_init(mem_ctx);
417 if (result == NULL) {
423 result->username = talloc_strdup(
424 result, get_cmdline_auth_info_username(src));
425 result->password = talloc_strdup(
426 result, get_cmdline_auth_info_password(src));
427 if ((result->username == NULL) || (result->password == NULL)) {
435 bool set_cmdline_auth_info_machine_account_creds(struct user_auth_info *auth_info)
438 char *account = NULL;
440 if (!get_cmdline_auth_info_use_machine_account(auth_info)) {
444 if (!secrets_init()) {
445 d_printf("ERROR: Unable to open secrets database\n");
449 if (asprintf(&account, "%s$@%s", global_myname(), lp_realm()) < 0) {
453 pass = secrets_fetch_machine_password(lp_workgroup(), NULL, NULL);
455 d_printf("ERROR: Unable to fetch machine password for "
457 account, lp_workgroup());
462 set_cmdline_auth_info_username(auth_info, account);
463 set_cmdline_auth_info_password(auth_info, pass);
471 /****************************************************************************
472 Ensure we have a password if one not given.
473 ****************************************************************************/
475 void set_cmdline_auth_info_getpass(struct user_auth_info *auth_info)
481 if (get_cmdline_auth_info_got_pass(auth_info) ||
482 get_cmdline_auth_info_use_kerberos(auth_info)) {
483 /* Already got one... */
487 frame = talloc_stackframe();
488 label = talloc_asprintf(frame, "Enter %s's password: ",
489 get_cmdline_auth_info_username(auth_info));
490 pass = getpass(label);
492 set_cmdline_auth_info_password(auth_info, pass);
497 /*******************************************************************
498 Check if a file exists - call vfs_file_exist for samba files.
499 ********************************************************************/
501 bool file_exist_stat(const char *fname,SMB_STRUCT_STAT *sbuf,
502 bool fake_dir_create_times)
508 if (sys_stat(fname, sbuf, fake_dir_create_times) != 0)
511 return((S_ISREG(sbuf->st_ex_mode)) || (S_ISFIFO(sbuf->st_ex_mode)));
514 /*******************************************************************
515 Check if a unix domain socket exists - call vfs_file_exist for samba files.
516 ********************************************************************/
518 bool socket_exist(const char *fname)
521 if (sys_stat(fname, &st, false) != 0)
524 return S_ISSOCK(st.st_ex_mode);
527 /*******************************************************************
528 Returns the size in bytes of the named given the stat struct.
529 ********************************************************************/
531 uint64_t get_file_size_stat(const SMB_STRUCT_STAT *sbuf)
533 return sbuf->st_ex_size;
536 /*******************************************************************
537 Returns the size in bytes of the named file.
538 ********************************************************************/
540 SMB_OFF_T get_file_size(char *file_name)
544 if (sys_stat(file_name, &buf, false) != 0)
545 return (SMB_OFF_T)-1;
546 return get_file_size_stat(&buf);
549 /*******************************************************************
550 Return a string representing an attribute for a file.
551 ********************************************************************/
553 char *attrib_string(uint16 mode)
559 if (mode & aVOLID) fstrcat(attrstr,"V");
560 if (mode & aDIR) fstrcat(attrstr,"D");
561 if (mode & aARCH) fstrcat(attrstr,"A");
562 if (mode & aHIDDEN) fstrcat(attrstr,"H");
563 if (mode & aSYSTEM) fstrcat(attrstr,"S");
564 if (mode & aRONLY) fstrcat(attrstr,"R");
566 return talloc_strdup(talloc_tos(), attrstr);
569 /*******************************************************************
570 Show a smb message structure.
571 ********************************************************************/
573 void show_msg(char *buf)
581 DEBUG(5,("size=%d\nsmb_com=0x%x\nsmb_rcls=%d\nsmb_reh=%d\nsmb_err=%d\nsmb_flg=%d\nsmb_flg2=%d\n",
583 (int)CVAL(buf,smb_com),
584 (int)CVAL(buf,smb_rcls),
585 (int)CVAL(buf,smb_reh),
586 (int)SVAL(buf,smb_err),
587 (int)CVAL(buf,smb_flg),
588 (int)SVAL(buf,smb_flg2)));
589 DEBUGADD(5,("smb_tid=%d\nsmb_pid=%d\nsmb_uid=%d\nsmb_mid=%d\n",
590 (int)SVAL(buf,smb_tid),
591 (int)SVAL(buf,smb_pid),
592 (int)SVAL(buf,smb_uid),
593 (int)SVAL(buf,smb_mid)));
594 DEBUGADD(5,("smt_wct=%d\n",(int)CVAL(buf,smb_wct)));
596 for (i=0;i<(int)CVAL(buf,smb_wct);i++)
597 DEBUGADD(5,("smb_vwv[%2d]=%5d (0x%X)\n",i,
598 SVAL(buf,smb_vwv+2*i),SVAL(buf,smb_vwv+2*i)));
600 bcc = (int)SVAL(buf,smb_vwv+2*(CVAL(buf,smb_wct)));
602 DEBUGADD(5,("smb_bcc=%d\n",bcc));
610 dump_data(10, (uint8 *)smb_buf(buf), bcc);
613 /*******************************************************************
614 Set the length and marker of an encrypted smb packet.
615 ********************************************************************/
617 void smb_set_enclen(char *buf,int len,uint16 enc_ctx_num)
619 _smb_setlen(buf,len);
623 SSVAL(buf,6,enc_ctx_num);
626 /*******************************************************************
627 Set the length and marker of an smb packet.
628 ********************************************************************/
630 void smb_setlen(char *buf,int len)
632 _smb_setlen(buf,len);
640 /*******************************************************************
641 Setup only the byte count for a smb message.
642 ********************************************************************/
644 int set_message_bcc(char *buf,int num_bytes)
646 int num_words = CVAL(buf,smb_wct);
647 SSVAL(buf,smb_vwv + num_words*SIZEOFWORD,num_bytes);
648 _smb_setlen(buf,smb_size + num_words*2 + num_bytes - 4);
649 return (smb_size + num_words*2 + num_bytes);
652 /*******************************************************************
653 Add a data blob to the end of a smb_buf, adjusting bcc and smb_len.
654 Return the bytes added
655 ********************************************************************/
657 ssize_t message_push_blob(uint8 **outbuf, DATA_BLOB blob)
659 size_t newlen = smb_len(*outbuf) + 4 + blob.length;
662 if (!(tmp = TALLOC_REALLOC_ARRAY(NULL, *outbuf, uint8, newlen))) {
663 DEBUG(0, ("talloc failed\n"));
668 memcpy(tmp + smb_len(tmp) + 4, blob.data, blob.length);
669 set_message_bcc((char *)tmp, smb_buflen(tmp) + blob.length);
673 /*******************************************************************
674 Reduce a file name, removing .. elements.
675 ********************************************************************/
677 static char *dos_clean_name(TALLOC_CTX *ctx, const char *s)
682 DEBUG(3,("dos_clean_name [%s]\n",s));
684 /* remove any double slashes */
685 str = talloc_all_string_sub(ctx, s, "\\\\", "\\");
690 /* Remove leading .\\ characters */
691 if(strncmp(str, ".\\", 2) == 0) {
692 trim_string(str, ".\\", NULL);
694 str = talloc_strdup(ctx, ".\\");
701 while ((p = strstr_m(str,"\\..\\")) != NULL) {
707 if ((p=strrchr_m(str,'\\')) != NULL) {
712 str = talloc_asprintf(ctx,
721 trim_string(str,NULL,"\\..");
722 return talloc_all_string_sub(ctx, str, "\\.\\", "\\");
725 /*******************************************************************
726 Reduce a file name, removing .. elements.
727 ********************************************************************/
729 char *unix_clean_name(TALLOC_CTX *ctx, const char *s)
734 DEBUG(3,("unix_clean_name [%s]\n",s));
736 /* remove any double slashes */
737 str = talloc_all_string_sub(ctx, s, "//","/");
742 /* Remove leading ./ characters */
743 if(strncmp(str, "./", 2) == 0) {
744 trim_string(str, "./", NULL);
746 str = talloc_strdup(ctx, "./");
753 while ((p = strstr_m(str,"/../")) != NULL) {
759 if ((p=strrchr_m(str,'/')) != NULL) {
764 str = talloc_asprintf(ctx,
773 trim_string(str,NULL,"/..");
774 return talloc_all_string_sub(ctx, str, "/./", "/");
777 char *clean_name(TALLOC_CTX *ctx, const char *s)
779 char *str = dos_clean_name(ctx, s);
783 return unix_clean_name(ctx, str);
786 /*******************************************************************
787 Write data into an fd at a given offset. Ignore seek errors.
788 ********************************************************************/
790 ssize_t write_data_at_offset(int fd, const char *buffer, size_t N, SMB_OFF_T pos)
795 if (pos == (SMB_OFF_T)-1) {
796 return write_data(fd, buffer, N);
798 #if defined(HAVE_PWRITE) || defined(HAVE_PRWITE64)
800 ret = sys_pwrite(fd,buffer + total,N - total, pos);
801 if (ret == -1 && errno == ESPIPE) {
802 return write_data(fd, buffer + total,N - total);
805 DEBUG(0,("write_data_at_offset: write failure. Error = %s\n", strerror(errno) ));
814 return (ssize_t)total;
816 /* Use lseek and write_data. */
817 if (sys_lseek(fd, pos, SEEK_SET) == -1) {
818 if (errno != ESPIPE) {
822 return write_data(fd, buffer, N);
826 /*******************************************************************
827 Sleep for a specified number of milliseconds.
828 ********************************************************************/
830 void smb_msleep(unsigned int t)
832 #if defined(HAVE_NANOSLEEP)
833 struct timespec tval;
836 tval.tv_sec = t/1000;
837 tval.tv_nsec = 1000000*(t%1000);
841 ret = nanosleep(&tval, &tval);
842 } while (ret < 0 && errno == EINTR && (tval.tv_sec > 0 || tval.tv_nsec > 0));
844 unsigned int tdiff=0;
845 struct timeval tval,t1,t2;
852 tval.tv_sec = (t-tdiff)/1000;
853 tval.tv_usec = 1000*((t-tdiff)%1000);
855 /* Never wait for more than 1 sec. */
856 if (tval.tv_sec > 1) {
863 sys_select_intr(0,&fds,NULL,NULL,&tval);
866 if (t2.tv_sec < t1.tv_sec) {
867 /* Someone adjusted time... */
871 tdiff = TvalDiff(&t1,&t2);
876 NTSTATUS reinit_after_fork(struct messaging_context *msg_ctx,
877 struct event_context *ev_ctx,
879 bool parent_longlived)
881 NTSTATUS status = NT_STATUS_OK;
883 /* Reset the state of the random
884 * number generation system, so
885 * children do not get the same random
886 * numbers as each other */
887 set_need_random_reseed();
889 /* tdb needs special fork handling */
890 if (tdb_reopen_all(parent_longlived ? 1 : 0) == -1) {
891 DEBUG(0,("tdb_reopen_all failed.\n"));
892 status = NT_STATUS_OPEN_FAILED;
896 if (ev_ctx && tevent_re_initialise(ev_ctx) != 0) {
897 smb_panic(__location__ ": Failed to re-initialise event context");
902 * For clustering, we need to re-init our ctdbd connection after the
905 status = messaging_reinit(msg_ctx, id);
906 if (!NT_STATUS_IS_OK(status)) {
907 DEBUG(0,("messaging_reinit() failed: %s\n",
915 #if defined(PARANOID_MALLOC_CHECKER)
917 /****************************************************************************
918 Internal malloc wrapper. Externally visible.
919 ****************************************************************************/
921 void *malloc_(size_t size)
928 #define malloc(s) __ERROR_DONT_USE_MALLOC_DIRECTLY
931 /****************************************************************************
932 Internal calloc wrapper. Not externally visible.
933 ****************************************************************************/
935 static void *calloc_(size_t count, size_t size)
937 if (size == 0 || count == 0) {
941 return calloc(count, size);
942 #define calloc(n,s) __ERROR_DONT_USE_CALLOC_DIRECTLY
945 /****************************************************************************
946 Internal realloc wrapper. Not externally visible.
947 ****************************************************************************/
949 static void *realloc_(void *ptr, size_t size)
952 return realloc(ptr, size);
953 #define realloc(p,s) __ERROR_DONT_USE_RELLOC_DIRECTLY
956 #endif /* PARANOID_MALLOC_CHECKER */
958 /****************************************************************************
960 ****************************************************************************/
962 void *memalign_array(size_t el_size, size_t align, unsigned int count)
964 if (count >= MAX_ALLOC_SIZE/el_size) {
968 return sys_memalign(align, el_size*count);
971 /****************************************************************************
973 ****************************************************************************/
975 void *calloc_array(size_t size, size_t nmemb)
977 if (nmemb >= MAX_ALLOC_SIZE/size) {
980 if (size == 0 || nmemb == 0) {
983 #if defined(PARANOID_MALLOC_CHECKER)
984 return calloc_(nmemb, size);
986 return calloc(nmemb, size);
990 /****************************************************************************
991 Expand a pointer to be a particular size.
992 Note that this version of Realloc has an extra parameter that decides
993 whether to free the passed in storage on allocation failure or if the
996 This is designed for use in the typical idiom of :
998 p = SMB_REALLOC(p, size)
1003 and not to have to keep track of the old 'p' contents to free later, nor
1004 to worry if the size parameter was zero. In the case where NULL is returned
1005 we guarentee that p has been freed.
1007 If free later semantics are desired, then pass 'free_old_on_error' as False which
1008 guarentees that the old contents are not freed on error, even if size == 0. To use
1011 tmp = SMB_REALLOC_KEEP_OLD_ON_ERROR(p, size);
1019 Changes were instigated by Coverity error checking. JRA.
1020 ****************************************************************************/
1022 void *Realloc(void *p, size_t size, bool free_old_on_error)
1027 if (free_old_on_error) {
1030 DEBUG(2,("Realloc asked for 0 bytes\n"));
1034 #if defined(PARANOID_MALLOC_CHECKER)
1036 ret = (void *)malloc_(size);
1038 ret = (void *)realloc_(p,size);
1042 ret = (void *)malloc(size);
1044 ret = (void *)realloc(p,size);
1049 if (free_old_on_error && p) {
1052 DEBUG(0,("Memory allocation error: failed to expand to %d bytes\n",(int)size));
1058 /****************************************************************************
1059 (Hopefully) efficient array append.
1060 ****************************************************************************/
1062 void add_to_large_array(TALLOC_CTX *mem_ctx, size_t element_size,
1063 void *element, void *_array, uint32 *num_elements,
1064 ssize_t *array_size)
1066 void **array = (void **)_array;
1068 if (*array_size < 0) {
1072 if (*array == NULL) {
1073 if (*array_size == 0) {
1077 if (*array_size >= MAX_ALLOC_SIZE/element_size) {
1081 *array = TALLOC(mem_ctx, element_size * (*array_size));
1082 if (*array == NULL) {
1087 if (*num_elements == *array_size) {
1090 if (*array_size >= MAX_ALLOC_SIZE/element_size) {
1094 *array = TALLOC_REALLOC(mem_ctx, *array,
1095 element_size * (*array_size));
1097 if (*array == NULL) {
1102 memcpy((char *)(*array) + element_size*(*num_elements),
1103 element, element_size);
1113 /****************************************************************************
1114 Get my own domain name, or "" if we have none.
1115 ****************************************************************************/
1117 char *get_mydnsdomname(TALLOC_CTX *ctx)
1119 const char *domname;
1122 domname = get_mydnsfullname();
1127 p = strchr_m(domname, '.');
1130 return talloc_strdup(ctx, p);
1132 return talloc_strdup(ctx, "");
1136 /****************************************************************************
1137 Interpret a protocol description string, with a default.
1138 ****************************************************************************/
1140 int interpret_protocol(const char *str,int def)
1142 if (strequal(str,"NT1"))
1143 return(PROTOCOL_NT1);
1144 if (strequal(str,"LANMAN2"))
1145 return(PROTOCOL_LANMAN2);
1146 if (strequal(str,"LANMAN1"))
1147 return(PROTOCOL_LANMAN1);
1148 if (strequal(str,"CORE"))
1149 return(PROTOCOL_CORE);
1150 if (strequal(str,"COREPLUS"))
1151 return(PROTOCOL_COREPLUS);
1152 if (strequal(str,"CORE+"))
1153 return(PROTOCOL_COREPLUS);
1155 DEBUG(0,("Unrecognised protocol level %s\n",str));
1161 #if (defined(HAVE_NETGROUP) && defined(WITH_AUTOMOUNT))
1162 /******************************************************************
1163 Remove any mount options such as -rsize=2048,wsize=2048 etc.
1164 Based on a fix from <Thomas.Hepper@icem.de>.
1165 Returns a malloc'ed string.
1166 *******************************************************************/
1168 static char *strip_mount_options(TALLOC_CTX *ctx, const char *str)
1171 const char *p = str;
1172 while(*p && !isspace(*p))
1174 while(*p && isspace(*p))
1177 return talloc_strdup(ctx, p);
1183 /*******************************************************************
1184 Patch from jkf@soton.ac.uk
1185 Split Luke's automount_server into YP lookup and string splitter
1186 so can easily implement automount_path().
1187 Returns a malloc'ed string.
1188 *******************************************************************/
1190 #ifdef WITH_NISPLUS_HOME
1191 char *automount_lookup(TALLOC_CTX *ctx, const char *user_name)
1195 char *nis_map = (char *)lp_nis_home_map_name();
1197 char buffer[NIS_MAXATTRVAL + 1];
1202 snprintf(buffer, sizeof(buffer), "[key=%s],%s", user_name, nis_map);
1203 DEBUG(5, ("NIS+ querystring: %s\n", buffer));
1205 if (result = nis_list(buffer, FOLLOW_PATH|EXPAND_NAME|HARD_LOOKUP, NULL, NULL)) {
1206 if (result->status != NIS_SUCCESS) {
1207 DEBUG(3, ("NIS+ query failed: %s\n", nis_sperrno(result->status)));
1209 object = result->objects.objects_val;
1210 if (object->zo_data.zo_type == ENTRY_OBJ) {
1211 entry = &object->zo_data.objdata_u.en_data;
1212 DEBUG(5, ("NIS+ entry type: %s\n", entry->en_type));
1213 DEBUG(3, ("NIS+ result: %s\n", entry->en_cols.en_cols_val[1].ec_value.ec_value_val));
1215 value = talloc_strdup(ctx,
1216 entry->en_cols.en_cols_val[1].ec_value.ec_value_val);
1218 nis_freeresult(result);
1221 value = talloc_string_sub(ctx,
1228 nis_freeresult(result);
1231 value = strip_mount_options(ctx, value);
1232 DEBUG(4, ("NIS+ Lookup: %s resulted in %s\n",
1237 #else /* WITH_NISPLUS_HOME */
1239 char *automount_lookup(TALLOC_CTX *ctx, const char *user_name)
1243 int nis_error; /* returned by yp all functions */
1244 char *nis_result; /* yp_match inits this */
1245 int nis_result_len; /* and set this */
1246 char *nis_domain; /* yp_get_default_domain inits this */
1247 char *nis_map = (char *)lp_nis_home_map_name();
1249 if ((nis_error = yp_get_default_domain(&nis_domain)) != 0) {
1250 DEBUG(3, ("YP Error: %s\n", yperr_string(nis_error)));
1254 DEBUG(5, ("NIS Domain: %s\n", nis_domain));
1256 if ((nis_error = yp_match(nis_domain, nis_map, user_name,
1257 strlen(user_name), &nis_result,
1258 &nis_result_len)) == 0) {
1259 if (nis_result_len > 0 && nis_result[nis_result_len] == '\n') {
1260 nis_result[nis_result_len] = '\0';
1262 value = talloc_strdup(ctx, nis_result);
1266 value = strip_mount_options(ctx, value);
1267 } else if(nis_error == YPERR_KEY) {
1268 DEBUG(3, ("YP Key not found: while looking up \"%s\" in map \"%s\"\n",
1269 user_name, nis_map));
1270 DEBUG(3, ("using defaults for server and home directory\n"));
1272 DEBUG(3, ("YP Error: \"%s\" while looking up \"%s\" in map \"%s\"\n",
1273 yperr_string(nis_error), user_name, nis_map));
1277 DEBUG(4, ("YP Lookup: %s resulted in %s\n", user_name, value));
1281 #endif /* WITH_NISPLUS_HOME */
1284 /****************************************************************************
1285 Check if a process exists. Does this work on all unixes?
1286 ****************************************************************************/
1288 bool process_exists(const struct server_id pid)
1290 if (procid_is_me(&pid)) {
1294 if (procid_is_local(&pid)) {
1295 return (kill(pid.pid,0) == 0 || errno != ESRCH);
1298 #ifdef CLUSTER_SUPPORT
1299 return ctdbd_process_exists(messaging_ctdbd_connection(procid_self()),
1306 /*******************************************************************
1307 Convert a uid into a user name.
1308 ********************************************************************/
1310 const char *uidtoname(uid_t uid)
1312 TALLOC_CTX *ctx = talloc_tos();
1314 struct passwd *pass = NULL;
1316 pass = getpwuid_alloc(ctx,uid);
1318 name = talloc_strdup(ctx,pass->pw_name);
1321 name = talloc_asprintf(ctx,
1328 /*******************************************************************
1329 Convert a gid into a group name.
1330 ********************************************************************/
1332 char *gidtoname(gid_t gid)
1336 grp = getgrgid(gid);
1338 return talloc_strdup(talloc_tos(), grp->gr_name);
1341 return talloc_asprintf(talloc_tos(),
1347 /*******************************************************************
1348 Convert a user name into a uid.
1349 ********************************************************************/
1351 uid_t nametouid(const char *name)
1353 struct passwd *pass;
1357 pass = getpwnam_alloc(talloc_autofree_context(), name);
1364 u = (uid_t)strtol(name, &p, 0);
1365 if ((p != name) && (*p == '\0'))
1371 /*******************************************************************
1372 Convert a name to a gid_t if possible. Return -1 if not a group.
1373 ********************************************************************/
1375 gid_t nametogid(const char *name)
1381 g = (gid_t)strtol(name, &p, 0);
1382 if ((p != name) && (*p == '\0'))
1385 grp = sys_getgrnam(name);
1387 return(grp->gr_gid);
1391 /*******************************************************************
1392 Something really nasty happened - panic !
1393 ********************************************************************/
1395 void smb_panic(const char *const why)
1403 if (global_clobber_region_function) {
1404 DEBUG(0,("smb_panic: clobber_region() last called from [%s(%u)]\n",
1405 global_clobber_region_function,
1406 global_clobber_region_line));
1411 DEBUG(0,("PANIC (pid %llu): %s\n",
1412 (unsigned long long)sys_getpid(), why));
1415 cmd = lp_panic_action();
1417 DEBUG(0, ("smb_panic(): calling panic action [%s]\n", cmd));
1418 result = system(cmd);
1421 DEBUG(0, ("smb_panic(): fork failed in panic action: %s\n",
1424 DEBUG(0, ("smb_panic(): action returned status %d\n",
1425 WEXITSTATUS(result)));
1431 /*******************************************************************
1432 Print a backtrace of the stack to the debug log. This function
1433 DELIBERATELY LEAKS MEMORY. The expectation is that you should
1434 exit shortly after calling it.
1435 ********************************************************************/
1437 #ifdef HAVE_LIBUNWIND_H
1438 #include <libunwind.h>
1441 #ifdef HAVE_EXECINFO_H
1442 #include <execinfo.h>
1445 #ifdef HAVE_LIBEXC_H
1449 void log_stack_trace(void)
1451 #ifdef HAVE_LIBUNWIND
1452 /* Try to use libunwind before any other technique since on ia64
1453 * libunwind correctly walks the stack in more circumstances than
1456 unw_cursor_t cursor;
1461 unw_word_t ip, sp, off;
1463 procname[sizeof(procname) - 1] = '\0';
1465 if (unw_getcontext(&uc) != 0) {
1466 goto libunwind_failed;
1469 if (unw_init_local(&cursor, &uc) != 0) {
1470 goto libunwind_failed;
1473 DEBUG(0, ("BACKTRACE:\n"));
1477 unw_get_reg(&cursor, UNW_REG_IP, &ip);
1478 unw_get_reg(&cursor, UNW_REG_SP, &sp);
1480 switch (unw_get_proc_name(&cursor,
1481 procname, sizeof(procname) - 1, &off) ) {
1485 /* Name truncated. */
1486 DEBUGADD(0, (" #%u %s + %#llx [ip=%#llx] [sp=%#llx]\n",
1487 i, procname, (long long)off,
1488 (long long)ip, (long long) sp));
1491 /* case -UNW_ENOINFO: */
1492 /* case -UNW_EUNSPEC: */
1493 /* No symbol name found. */
1494 DEBUGADD(0, (" #%u %s [ip=%#llx] [sp=%#llx]\n",
1495 i, "<unknown symbol>",
1496 (long long)ip, (long long) sp));
1499 } while (unw_step(&cursor) > 0);
1504 DEBUG(0, ("unable to produce a stack trace with libunwind\n"));
1506 #elif HAVE_BACKTRACE_SYMBOLS
1507 void *backtrace_stack[BACKTRACE_STACK_SIZE];
1508 size_t backtrace_size;
1509 char **backtrace_strings;
1511 /* get the backtrace (stack frames) */
1512 backtrace_size = backtrace(backtrace_stack,BACKTRACE_STACK_SIZE);
1513 backtrace_strings = backtrace_symbols(backtrace_stack, backtrace_size);
1515 DEBUG(0, ("BACKTRACE: %lu stack frames:\n",
1516 (unsigned long)backtrace_size));
1518 if (backtrace_strings) {
1521 for (i = 0; i < backtrace_size; i++)
1522 DEBUGADD(0, (" #%u %s\n", i, backtrace_strings[i]));
1524 /* Leak the backtrace_strings, rather than risk what free() might do */
1529 /* The IRIX libexc library provides an API for unwinding the stack. See
1530 * libexc(3) for details. Apparantly trace_back_stack leaks memory, but
1531 * since we are about to abort anyway, it hardly matters.
1534 #define NAMESIZE 32 /* Arbitrary */
1536 __uint64_t addrs[BACKTRACE_STACK_SIZE];
1537 char * names[BACKTRACE_STACK_SIZE];
1538 char namebuf[BACKTRACE_STACK_SIZE * NAMESIZE];
1545 ZERO_ARRAY(namebuf);
1547 /* We need to be root so we can open our /proc entry to walk
1548 * our stack. It also helps when we want to dump core.
1552 for (i = 0; i < BACKTRACE_STACK_SIZE; i++) {
1553 names[i] = namebuf + (i * NAMESIZE);
1556 levels = trace_back_stack(0, addrs, names,
1557 BACKTRACE_STACK_SIZE, NAMESIZE - 1);
1559 DEBUG(0, ("BACKTRACE: %d stack frames:\n", levels));
1560 for (i = 0; i < levels; i++) {
1561 DEBUGADD(0, (" #%d 0x%llx %s\n", i, addrs[i], names[i]));
1566 DEBUG(0, ("unable to produce a stack trace on this platform\n"));
1570 /*******************************************************************
1571 A readdir wrapper which just returns the file name.
1572 ********************************************************************/
1574 const char *readdirname(SMB_STRUCT_DIR *p)
1576 SMB_STRUCT_DIRENT *ptr;
1582 ptr = (SMB_STRUCT_DIRENT *)sys_readdir(p);
1586 dname = ptr->d_name;
1593 #ifdef HAVE_BROKEN_READDIR_NAME
1594 /* using /usr/ucb/cc is BAD */
1598 return talloc_strdup(talloc_tos(), dname);
1601 /*******************************************************************
1602 Utility function used to decide if the last component
1603 of a path matches a (possibly wildcarded) entry in a namelist.
1604 ********************************************************************/
1606 bool is_in_path(const char *name, name_compare_entry *namelist, bool case_sensitive)
1608 const char *last_component;
1610 /* if we have no list it's obviously not in the path */
1611 if((namelist == NULL ) || ((namelist != NULL) && (namelist[0].name == NULL))) {
1615 DEBUG(8, ("is_in_path: %s\n", name));
1617 /* Get the last component of the unix name. */
1618 last_component = strrchr_m(name, '/');
1619 if (!last_component) {
1620 last_component = name;
1622 last_component++; /* Go past '/' */
1625 for(; namelist->name != NULL; namelist++) {
1626 if(namelist->is_wild) {
1627 if (mask_match(last_component, namelist->name, case_sensitive)) {
1628 DEBUG(8,("is_in_path: mask match succeeded\n"));
1632 if((case_sensitive && (strcmp(last_component, namelist->name) == 0))||
1633 (!case_sensitive && (StrCaseCmp(last_component, namelist->name) == 0))) {
1634 DEBUG(8,("is_in_path: match succeeded\n"));
1639 DEBUG(8,("is_in_path: match not found\n"));
1643 /*******************************************************************
1644 Strip a '/' separated list into an array of
1645 name_compare_enties structures suitable for
1646 passing to is_in_path(). We do this for
1647 speed so we can pre-parse all the names in the list
1648 and don't do it for each call to is_in_path().
1649 namelist is modified here and is assumed to be
1650 a copy owned by the caller.
1651 We also check if the entry contains a wildcard to
1652 remove a potentially expensive call to mask_match
1654 ********************************************************************/
1656 void set_namearray(name_compare_entry **ppname_array, const char *namelist)
1659 char *nameptr = (char *)namelist;
1660 int num_entries = 0;
1663 (*ppname_array) = NULL;
1665 if((nameptr == NULL ) || ((nameptr != NULL) && (*nameptr == '\0')))
1668 /* We need to make two passes over the string. The
1669 first to count the number of elements, the second
1674 if ( *nameptr == '/' ) {
1675 /* cope with multiple (useless) /s) */
1679 /* anything left? */
1680 if ( *nameptr == '\0' )
1683 /* find the next '/' or consume remaining */
1684 name_end = strchr_m(nameptr, '/');
1685 if (name_end == NULL)
1686 name_end = (char *)nameptr + strlen(nameptr);
1688 /* next segment please */
1689 nameptr = name_end + 1;
1693 if(num_entries == 0)
1696 if(( (*ppname_array) = SMB_MALLOC_ARRAY(name_compare_entry, num_entries + 1)) == NULL) {
1697 DEBUG(0,("set_namearray: malloc fail\n"));
1701 /* Now copy out the names */
1702 nameptr = (char *)namelist;
1705 if ( *nameptr == '/' ) {
1706 /* cope with multiple (useless) /s) */
1710 /* anything left? */
1711 if ( *nameptr == '\0' )
1714 /* find the next '/' or consume remaining */
1715 name_end = strchr_m(nameptr, '/');
1719 name_end = nameptr + strlen(nameptr);
1721 (*ppname_array)[i].is_wild = ms_has_wild(nameptr);
1722 if(((*ppname_array)[i].name = SMB_STRDUP(nameptr)) == NULL) {
1723 DEBUG(0,("set_namearray: malloc fail (1)\n"));
1727 /* next segment please */
1728 nameptr = name_end + 1;
1732 (*ppname_array)[i].name = NULL;
1737 /****************************************************************************
1738 Routine to free a namearray.
1739 ****************************************************************************/
1741 void free_namearray(name_compare_entry *name_array)
1745 if(name_array == NULL)
1748 for(i=0; name_array[i].name!=NULL; i++)
1749 SAFE_FREE(name_array[i].name);
1750 SAFE_FREE(name_array);
1754 #define DBGC_CLASS DBGC_LOCKING
1756 /****************************************************************************
1757 Simple routine to query existing file locks. Cruft in NFS and 64->32 bit mapping
1758 is dealt with in posix.c
1759 Returns True if we have information regarding this lock region (and returns
1760 F_UNLCK in *ptype if the region is unlocked). False if the call failed.
1761 ****************************************************************************/
1763 bool fcntl_getlock(int fd, SMB_OFF_T *poffset, SMB_OFF_T *pcount, int *ptype, pid_t *ppid)
1765 SMB_STRUCT_FLOCK lock;
1768 DEBUG(8,("fcntl_getlock fd=%d offset=%.0f count=%.0f type=%d\n",
1769 fd,(double)*poffset,(double)*pcount,*ptype));
1771 lock.l_type = *ptype;
1772 lock.l_whence = SEEK_SET;
1773 lock.l_start = *poffset;
1774 lock.l_len = *pcount;
1777 ret = sys_fcntl_ptr(fd,SMB_F_GETLK,&lock);
1781 DEBUG(3,("fcntl_getlock: lock request failed at offset %.0f count %.0f type %d (%s)\n",
1782 (double)*poffset,(double)*pcount,*ptype,strerror(errno)));
1787 *ptype = lock.l_type;
1788 *poffset = lock.l_start;
1789 *pcount = lock.l_len;
1792 DEBUG(3,("fcntl_getlock: fd %d is returned info %d pid %u\n",
1793 fd, (int)lock.l_type, (unsigned int)lock.l_pid));
1798 #define DBGC_CLASS DBGC_ALL
1800 /*******************************************************************
1801 Is the name specified one of my netbios names.
1802 Returns true if it is equal, false otherwise.
1803 ********************************************************************/
1805 bool is_myname(const char *s)
1810 for (n=0; my_netbios_names(n); n++) {
1811 if (strequal(my_netbios_names(n), s)) {
1816 DEBUG(8, ("is_myname(\"%s\") returns %d\n", s, ret));
1820 /*******************************************************************
1821 Is the name specified our workgroup/domain.
1822 Returns true if it is equal, false otherwise.
1823 ********************************************************************/
1825 bool is_myworkgroup(const char *s)
1829 if (strequal(s, lp_workgroup())) {
1833 DEBUG(8, ("is_myworkgroup(\"%s\") returns %d\n", s, ret));
1837 /*******************************************************************
1838 we distinguish between 2K and XP by the "Native Lan Manager" string
1839 WinXP => "Windows 2002 5.1"
1840 WinXP 64bit => "Windows XP 5.2"
1841 Win2k => "Windows 2000 5.0"
1842 NT4 => "Windows NT 4.0"
1843 Win9x => "Windows 4.0"
1844 Windows 2003 doesn't set the native lan manager string but
1845 they do set the domain to "Windows 2003 5.2" (probably a bug).
1846 ********************************************************************/
1848 void ra_lanman_string( const char *native_lanman )
1850 if ( strcmp( native_lanman, "Windows 2002 5.1" ) == 0 )
1851 set_remote_arch( RA_WINXP );
1852 else if ( strcmp( native_lanman, "Windows XP 5.2" ) == 0 )
1853 set_remote_arch( RA_WINXP64 );
1854 else if ( strcmp( native_lanman, "Windows Server 2003 5.2" ) == 0 )
1855 set_remote_arch( RA_WIN2K3 );
1858 static const char *remote_arch_str;
1860 const char *get_remote_arch_str(void)
1862 if (!remote_arch_str) {
1865 return remote_arch_str;
1868 /*******************************************************************
1869 Set the horrid remote_arch string based on an enum.
1870 ********************************************************************/
1872 void set_remote_arch(enum remote_arch_types type)
1877 remote_arch_str = "WfWg";
1880 remote_arch_str = "OS2";
1883 remote_arch_str = "Win95";
1886 remote_arch_str = "WinNT";
1889 remote_arch_str = "Win2K";
1892 remote_arch_str = "WinXP";
1895 remote_arch_str = "WinXP64";
1898 remote_arch_str = "Win2K3";
1901 remote_arch_str = "Vista";
1904 remote_arch_str = "Samba";
1907 remote_arch_str = "CIFSFS";
1910 ra_type = RA_UNKNOWN;
1911 remote_arch_str = "UNKNOWN";
1915 DEBUG(10,("set_remote_arch: Client arch is \'%s\'\n",
1919 /*******************************************************************
1920 Get the remote_arch type.
1921 ********************************************************************/
1923 enum remote_arch_types get_remote_arch(void)
1928 const char *tab_depth(int level, int depth)
1930 if( CHECK_DEBUGLVL(level) ) {
1931 dbgtext("%*s", depth*4, "");
1936 /*****************************************************************************
1937 Provide a checksum on a string
1939 Input: s - the null-terminated character string for which the checksum
1942 Output: The checksum value calculated for s.
1943 *****************************************************************************/
1945 int str_checksum(const char *s)
1953 res ^= (c << (i % 15)) ^ (c >> (15-(i%15)));
1960 /*****************************************************************
1961 Zero a memory area then free it. Used to catch bugs faster.
1962 *****************************************************************/
1964 void zero_free(void *p, size_t size)
1970 /*****************************************************************
1971 Set our open file limit to a requested max and return the limit.
1972 *****************************************************************/
1974 int set_maxfiles(int requested_max)
1976 #if (defined(HAVE_GETRLIMIT) && defined(RLIMIT_NOFILE))
1978 int saved_current_limit;
1980 if(getrlimit(RLIMIT_NOFILE, &rlp)) {
1981 DEBUG(0,("set_maxfiles: getrlimit (1) for RLIMIT_NOFILE failed with error %s\n",
1984 return requested_max;
1988 * Set the fd limit to be real_max_open_files + MAX_OPEN_FUDGEFACTOR to
1989 * account for the extra fd we need
1990 * as well as the log files and standard
1991 * handles etc. Save the limit we want to set in case
1992 * we are running on an OS that doesn't support this limit (AIX)
1993 * which always returns RLIM_INFINITY for rlp.rlim_max.
1996 /* Try raising the hard (max) limit to the requested amount. */
1998 #if defined(RLIM_INFINITY)
1999 if (rlp.rlim_max != RLIM_INFINITY) {
2000 int orig_max = rlp.rlim_max;
2002 if ( rlp.rlim_max < requested_max )
2003 rlp.rlim_max = requested_max;
2005 /* This failing is not an error - many systems (Linux) don't
2006 support our default request of 10,000 open files. JRA. */
2008 if(setrlimit(RLIMIT_NOFILE, &rlp)) {
2009 DEBUG(3,("set_maxfiles: setrlimit for RLIMIT_NOFILE for %d max files failed with error %s\n",
2010 (int)rlp.rlim_max, strerror(errno) ));
2012 /* Set failed - restore original value from get. */
2013 rlp.rlim_max = orig_max;
2018 /* Now try setting the soft (current) limit. */
2020 saved_current_limit = rlp.rlim_cur = MIN(requested_max,rlp.rlim_max);
2022 if(setrlimit(RLIMIT_NOFILE, &rlp)) {
2023 DEBUG(0,("set_maxfiles: setrlimit for RLIMIT_NOFILE for %d files failed with error %s\n",
2024 (int)rlp.rlim_cur, strerror(errno) ));
2026 return saved_current_limit;
2029 if(getrlimit(RLIMIT_NOFILE, &rlp)) {
2030 DEBUG(0,("set_maxfiles: getrlimit (2) for RLIMIT_NOFILE failed with error %s\n",
2033 return saved_current_limit;
2036 #if defined(RLIM_INFINITY)
2037 if(rlp.rlim_cur == RLIM_INFINITY)
2038 return saved_current_limit;
2041 if((int)rlp.rlim_cur > saved_current_limit)
2042 return saved_current_limit;
2044 return rlp.rlim_cur;
2045 #else /* !defined(HAVE_GETRLIMIT) || !defined(RLIMIT_NOFILE) */
2047 * No way to know - just guess...
2049 return requested_max;
2053 /*****************************************************************
2054 malloc that aborts with smb_panic on fail or zero size.
2055 *****************************************************************/
2057 void *smb_xmalloc_array(size_t size, unsigned int count)
2061 smb_panic("smb_xmalloc_array: called with zero size");
2063 if (count >= MAX_ALLOC_SIZE/size) {
2064 smb_panic("smb_xmalloc_array: alloc size too large");
2066 if ((p = SMB_MALLOC(size*count)) == NULL) {
2067 DEBUG(0, ("smb_xmalloc_array failed to allocate %lu * %lu bytes\n",
2068 (unsigned long)size, (unsigned long)count));
2069 smb_panic("smb_xmalloc_array: malloc failed");
2075 vasprintf that aborts on malloc fail
2078 int smb_xvasprintf(char **ptr, const char *format, va_list ap)
2085 n = vasprintf(ptr, format, ap2);
2087 if (n == -1 || ! *ptr) {
2088 smb_panic("smb_xvasprintf: out of memory");
2093 /*****************************************************************
2094 Get local hostname and cache result.
2095 *****************************************************************/
2097 char *myhostname(void)
2101 /* This is cached forever so
2102 * use talloc_autofree_context() ctx. */
2103 ret = get_myname(talloc_autofree_context());
2109 * @brief Returns an absolute path to a file concatenating the provided
2110 * @a rootpath and @a basename
2112 * @param name Filename, relative to @a rootpath
2114 * @retval Pointer to a string containing the full path.
2117 static char *xx_path(const char *name, const char *rootpath)
2121 fname = talloc_strdup(talloc_tos(), rootpath);
2125 trim_string(fname,"","/");
2127 if (!directory_exist(fname)) {
2128 if (!mkdir(fname,0755))
2129 DEBUG(1, ("Unable to create directory %s for file %s. "
2130 "Error was %s\n", fname, name, strerror(errno)));
2133 return talloc_asprintf(talloc_tos(),
2140 * @brief Returns an absolute path to a file in the Samba lock directory.
2142 * @param name File to find, relative to LOCKDIR.
2144 * @retval Pointer to a talloc'ed string containing the full path.
2147 char *lock_path(const char *name)
2149 return xx_path(name, lp_lockdir());
2153 * @brief Returns an absolute path to a file in the Samba pid directory.
2155 * @param name File to find, relative to PIDDIR.
2157 * @retval Pointer to a talloc'ed string containing the full path.
2160 char *pid_path(const char *name)
2162 return xx_path(name, lp_piddir());
2166 * @brief Returns an absolute path to a file in the Samba lib directory.
2168 * @param name File to find, relative to LIBDIR.
2170 * @retval Pointer to a string containing the full path.
2173 char *lib_path(const char *name)
2175 return talloc_asprintf(talloc_tos(), "%s/%s", get_dyn_LIBDIR(), name);
2179 * @brief Returns an absolute path to a file in the Samba modules directory.
2181 * @param name File to find, relative to MODULESDIR.
2183 * @retval Pointer to a string containing the full path.
2186 char *modules_path(const char *name)
2188 return talloc_asprintf(talloc_tos(), "%s/%s", get_dyn_MODULESDIR(), name);
2192 * @brief Returns an absolute path to a file in the Samba data directory.
2194 * @param name File to find, relative to CODEPAGEDIR.
2196 * @retval Pointer to a talloc'ed string containing the full path.
2199 char *data_path(const char *name)
2201 return talloc_asprintf(talloc_tos(), "%s/%s", get_dyn_CODEPAGEDIR(), name);
2205 * @brief Returns an absolute path to a file in the Samba state directory.
2207 * @param name File to find, relative to STATEDIR.
2209 * @retval Pointer to a talloc'ed string containing the full path.
2212 char *state_path(const char *name)
2214 return xx_path(name, lp_statedir());
2218 * @brief Returns an absolute path to a file in the Samba cache directory.
2220 * @param name File to find, relative to CACHEDIR.
2222 * @retval Pointer to a talloc'ed string containing the full path.
2225 char *cache_path(const char *name)
2227 return xx_path(name, lp_cachedir());
2231 * @brief Returns the platform specific shared library extension.
2233 * @retval Pointer to a const char * containing the extension.
2236 const char *shlib_ext(void)
2238 return get_dyn_SHLIBEXT();
2241 /*******************************************************************
2242 Given a filename - get its directory name
2243 ********************************************************************/
2245 bool parent_dirname(TALLOC_CTX *mem_ctx, const char *dir, char **parent,
2251 p = strrchr_m(dir, '/'); /* Find final '/', if any */
2254 if (!(*parent = talloc_strdup(mem_ctx, "."))) {
2265 if (!(*parent = (char *)TALLOC_MEMDUP(mem_ctx, dir, len+1))) {
2268 (*parent)[len] = '\0';
2276 /*******************************************************************
2277 Determine if a pattern contains any Microsoft wildcard characters.
2278 *******************************************************************/
2280 bool ms_has_wild(const char *s)
2284 if (lp_posix_pathnames()) {
2285 /* With posix pathnames no characters are wild. */
2289 while ((c = *s++)) {
2302 bool ms_has_wild_w(const smb_ucs2_t *s)
2305 if (!s) return False;
2306 while ((c = *s++)) {
2308 case UCS2_CHAR('*'):
2309 case UCS2_CHAR('?'):
2310 case UCS2_CHAR('<'):
2311 case UCS2_CHAR('>'):
2312 case UCS2_CHAR('"'):
2319 /*******************************************************************
2320 A wrapper that handles case sensitivity and the special handling
2322 *******************************************************************/
2324 bool mask_match(const char *string, const char *pattern, bool is_case_sensitive)
2326 if (ISDOTDOT(string))
2331 return ms_fnmatch(pattern, string, Protocol <= PROTOCOL_LANMAN2, is_case_sensitive) == 0;
2334 /*******************************************************************
2335 A wrapper that handles case sensitivity and the special handling
2336 of the ".." name. Varient that is only called by old search code which requires
2337 pattern translation.
2338 *******************************************************************/
2340 bool mask_match_search(const char *string, const char *pattern, bool is_case_sensitive)
2342 if (ISDOTDOT(string))
2347 return ms_fnmatch(pattern, string, True, is_case_sensitive) == 0;
2350 /*******************************************************************
2351 A wrapper that handles a list of patters and calls mask_match()
2352 on each. Returns True if any of the patterns match.
2353 *******************************************************************/
2355 bool mask_match_list(const char *string, char **list, int listLen, bool is_case_sensitive)
2357 while (listLen-- > 0) {
2358 if (mask_match(string, *list++, is_case_sensitive))
2364 /*********************************************************
2365 Recursive routine that is called by unix_wild_match.
2366 *********************************************************/
2368 static bool unix_do_match(const char *regexp, const char *str)
2372 for( p = regexp; *p && *str; ) {
2383 * Look for a character matching
2384 * the one after the '*'.
2388 return true; /* Automatic match */
2391 while(*str && (*p != *str))
2395 * Patch from weidel@multichart.de. In the case of the regexp
2396 * '*XX*' we want to ensure there are at least 2 'X' characters
2397 * in the string after the '*' for a match to be made.
2404 * Eat all the characters that match, but count how many there were.
2407 while(*str && (*p == *str)) {
2413 * Now check that if the regexp had n identical characters that
2414 * matchcount had at least that many matches.
2417 while ( *(p+1) && (*(p+1) == *p)) {
2422 if ( matchcount <= 0 )
2426 str--; /* We've eaten the match char after the '*' */
2428 if(unix_do_match(p, str))
2450 if (!*p && str[0] == '.' && str[1] == 0)
2453 if (!*str && *p == '?') {
2459 if(!*str && (*p == '*' && p[1] == '\0'))
2465 /*******************************************************************
2466 Simple case insensitive interface to a UNIX wildcard matcher.
2467 Returns True if match, False if not.
2468 *******************************************************************/
2470 bool unix_wild_match(const char *pattern, const char *string)
2472 TALLOC_CTX *ctx = talloc_stackframe();
2478 p2 = talloc_strdup(ctx,pattern);
2479 s2 = talloc_strdup(ctx,string);
2487 /* Remove any *? and ** from the pattern as they are meaningless */
2488 for(p = p2; *p; p++) {
2489 while( *p == '*' && (p[1] == '?' ||p[1] == '*')) {
2490 memmove(&p[1], &p[2], strlen(&p[2])+1);
2494 if (strequal(p2,"*")) {
2499 ret = unix_do_match(p2, s2);
2504 /**********************************************************************
2505 Converts a name to a fully qualified domain name.
2506 Returns true if lookup succeeded, false if not (then fqdn is set to name)
2507 Note we deliberately use gethostbyname here, not getaddrinfo as we want
2508 to examine the h_aliases and I don't know how to do that with getaddrinfo.
2509 ***********************************************************************/
2511 bool name_to_fqdn(fstring fqdn, const char *name)
2514 struct hostent *hp = gethostbyname(name);
2516 if (!hp || !hp->h_name || !*hp->h_name) {
2517 DEBUG(10,("name_to_fqdn: lookup for %s failed.\n", name));
2518 fstrcpy(fqdn, name);
2522 /* Find out if the fqdn is returned as an alias
2523 * to cope with /etc/hosts files where the first
2524 * name is not the fqdn but the short name */
2525 if (hp->h_aliases && (! strchr_m(hp->h_name, '.'))) {
2527 for (i = 0; hp->h_aliases[i]; i++) {
2528 if (strchr_m(hp->h_aliases[i], '.')) {
2529 full = hp->h_aliases[i];
2534 if (full && (StrCaseCmp(full, "localhost.localdomain") == 0)) {
2535 DEBUG(1, ("WARNING: your /etc/hosts file may be broken!\n"));
2536 DEBUGADD(1, (" Specifing the machine hostname for address 127.0.0.1 may lead\n"));
2537 DEBUGADD(1, (" to Kerberos authentication problems as localhost.localdomain\n"));
2538 DEBUGADD(1, (" may end up being used instead of the real machine FQDN.\n"));
2545 DEBUG(10,("name_to_fqdn: lookup for %s -> %s.\n", name, full));
2546 fstrcpy(fqdn, full);
2550 /**********************************************************************
2551 Append a DATA_BLOB to a talloc'ed object
2552 ***********************************************************************/
2554 void *talloc_append_blob(TALLOC_CTX *mem_ctx, void *buf, DATA_BLOB blob)
2556 size_t old_size = 0;
2559 if (blob.length == 0) {
2564 old_size = talloc_get_size(buf);
2567 result = (char *)TALLOC_REALLOC(mem_ctx, buf, old_size + blob.length);
2568 if (result == NULL) {
2572 memcpy(result + old_size, blob.data, blob.length);
2576 uint32 map_share_mode_to_deny_mode(uint32 share_access, uint32 private_options)
2578 switch (share_access & ~FILE_SHARE_DELETE) {
2579 case FILE_SHARE_NONE:
2581 case FILE_SHARE_READ:
2583 case FILE_SHARE_WRITE:
2585 case FILE_SHARE_READ|FILE_SHARE_WRITE:
2588 if (private_options & NTCREATEX_OPTIONS_PRIVATE_DENY_DOS) {
2590 } else if (private_options & NTCREATEX_OPTIONS_PRIVATE_DENY_FCB) {
2597 pid_t procid_to_pid(const struct server_id *proc)
2602 static uint32 my_vnn = NONCLUSTER_VNN;
2604 void set_my_vnn(uint32 vnn)
2606 DEBUG(10, ("vnn pid %d = %u\n", (int)sys_getpid(), (unsigned int)vnn));
2610 uint32 get_my_vnn(void)
2615 static uint64_t my_unique_id = 0;
2617 void set_my_unique_id(uint64_t unique_id)
2619 my_unique_id = unique_id;
2622 struct server_id pid_to_procid(pid_t pid)
2624 struct server_id result;
2626 result.unique_id = my_unique_id;
2627 #ifdef CLUSTER_SUPPORT
2628 result.vnn = my_vnn;
2633 struct server_id procid_self(void)
2635 return pid_to_procid(sys_getpid());
2638 bool procid_equal(const struct server_id *p1, const struct server_id *p2)
2640 if (p1->pid != p2->pid)
2642 #ifdef CLUSTER_SUPPORT
2643 if (p1->vnn != p2->vnn)
2649 bool cluster_id_equal(const struct server_id *id1,
2650 const struct server_id *id2)
2652 return procid_equal(id1, id2);
2655 bool procid_is_me(const struct server_id *pid)
2657 if (pid->pid != sys_getpid())
2659 #ifdef CLUSTER_SUPPORT
2660 if (pid->vnn != my_vnn)
2666 struct server_id interpret_pid(const char *pid_string)
2668 struct server_id result;
2670 #ifdef CLUSTER_SUPPORT
2672 if (sscanf(pid_string, "%u:%d", &vnn, &pid) == 2) {
2676 else if (sscanf(pid_string, "%d", &pid) == 1) {
2677 result.vnn = get_my_vnn();
2681 result.vnn = NONCLUSTER_VNN;
2685 if (sscanf(pid_string, "%d", &pid) != 1) {
2691 /* Assigning to result.pid may have overflowed
2692 Map negative pid to -1: i.e. error */
2693 if (result.pid < 0) {
2696 result.unique_id = 0;
2700 char *procid_str(TALLOC_CTX *mem_ctx, const struct server_id *pid)
2702 #ifdef CLUSTER_SUPPORT
2703 if (pid->vnn == NONCLUSTER_VNN) {
2704 return talloc_asprintf(mem_ctx,
2709 return talloc_asprintf(mem_ctx,
2715 return talloc_asprintf(mem_ctx,
2721 char *procid_str_static(const struct server_id *pid)
2723 return procid_str(talloc_tos(), pid);
2726 bool procid_valid(const struct server_id *pid)
2728 return (pid->pid != -1);
2731 bool procid_is_local(const struct server_id *pid)
2733 #ifdef CLUSTER_SUPPORT
2734 return pid->vnn == my_vnn;
2740 int this_is_smp(void)
2742 #if defined(HAVE_SYSCONF)
2744 #if defined(SYSCONF_SC_NPROC_ONLN)
2745 return (sysconf(_SC_NPROC_ONLN) > 1) ? 1 : 0;
2746 #elif defined(SYSCONF_SC_NPROCESSORS_ONLN)
2747 return (sysconf(_SC_NPROCESSORS_ONLN) > 1) ? 1 : 0;
2757 /****************************************************************
2758 Check if offset/length fit into bufsize. Should probably be
2759 merged with is_offset_safe, but this would require a rewrite
2760 of lanman.c. Later :-)
2761 ****************************************************************/
2763 bool trans_oob(uint32_t bufsize, uint32_t offset, uint32_t length)
2765 if ((offset + length < offset) || (offset + length < length)) {
2769 if ((offset > bufsize) || (offset + length > bufsize)) {
2776 /****************************************************************
2777 Check if an offset into a buffer is safe.
2778 If this returns True it's safe to indirect into the byte at
2780 ****************************************************************/
2782 bool is_offset_safe(const char *buf_base, size_t buf_len, char *ptr, size_t off)
2784 const char *end_base = buf_base + buf_len;
2785 char *end_ptr = ptr + off;
2787 if (!buf_base || !ptr) {
2791 if (end_base < buf_base || end_ptr < ptr) {
2792 return False; /* wrap. */
2795 if (end_ptr < end_base) {
2801 /****************************************************************
2802 Return a safe pointer into a buffer, or NULL.
2803 ****************************************************************/
2805 char *get_safe_ptr(const char *buf_base, size_t buf_len, char *ptr, size_t off)
2807 return is_offset_safe(buf_base, buf_len, ptr, off) ?
2811 /****************************************************************
2812 Return a safe pointer into a string within a buffer, or NULL.
2813 ****************************************************************/
2815 char *get_safe_str_ptr(const char *buf_base, size_t buf_len, char *ptr, size_t off)
2817 if (!is_offset_safe(buf_base, buf_len, ptr, off)) {
2820 /* Check if a valid string exists at this offset. */
2821 if (skip_string(buf_base,buf_len, ptr + off) == NULL) {
2827 /****************************************************************
2828 Return an SVAL at a pointer, or failval if beyond the end.
2829 ****************************************************************/
2831 int get_safe_SVAL(const char *buf_base, size_t buf_len, char *ptr, size_t off, int failval)
2834 * Note we use off+1 here, not off+2 as SVAL accesses ptr[0] and ptr[1],
2837 if (!is_offset_safe(buf_base, buf_len, ptr, off+1)) {
2840 return SVAL(ptr,off);
2843 /****************************************************************
2844 Return an IVAL at a pointer, or failval if beyond the end.
2845 ****************************************************************/
2847 int get_safe_IVAL(const char *buf_base, size_t buf_len, char *ptr, size_t off, int failval)
2850 * Note we use off+3 here, not off+4 as IVAL accesses
2851 * ptr[0] ptr[1] ptr[2] ptr[3] NOT ptr[4].
2853 if (!is_offset_safe(buf_base, buf_len, ptr, off+3)) {
2856 return IVAL(ptr,off);
2859 /****************************************************************
2860 Split DOM\user into DOM and user. Do not mix with winbind variants of that
2861 call (they take care of winbind separator and other winbind specific settings).
2862 ****************************************************************/
2864 void split_domain_user(TALLOC_CTX *mem_ctx,
2865 const char *full_name,
2869 const char *p = NULL;
2871 p = strchr_m(full_name, '\\');
2874 *domain = talloc_strndup(mem_ctx, full_name,
2875 PTR_DIFF(p, full_name));
2876 *user = talloc_strdup(mem_ctx, p+1);
2878 *domain = talloc_strdup(mem_ctx, "");
2879 *user = talloc_strdup(mem_ctx, full_name);
2885 Disable these now we have checked all code paths and ensured
2886 NULL returns on zero request. JRA.
2888 /****************************************************************
2889 talloc wrapper functions that guarentee a null pointer return
2891 ****************************************************************/
2893 #ifndef MAX_TALLOC_SIZE
2894 #define MAX_TALLOC_SIZE 0x10000000
2898 * talloc and zero memory.
2899 * - returns NULL if size is zero.
2902 void *_talloc_zero_zeronull(const void *ctx, size_t size, const char *name)
2910 p = talloc_named_const(ctx, size, name);
2913 memset(p, '\0', size);
2920 * memdup with a talloc.
2921 * - returns NULL if size is zero.
2924 void *_talloc_memdup_zeronull(const void *t, const void *p, size_t size, const char *name)
2932 newp = talloc_named_const(t, size, name);
2934 memcpy(newp, p, size);
2941 * alloc an array, checking for integer overflow in the array size.
2942 * - returns NULL if count or el_size are zero.
2945 void *_talloc_array_zeronull(const void *ctx, size_t el_size, unsigned count, const char *name)
2947 if (count >= MAX_TALLOC_SIZE/el_size) {
2951 if (el_size == 0 || count == 0) {
2955 return talloc_named_const(ctx, el_size * count, name);
2959 * alloc an zero array, checking for integer overflow in the array size
2960 * - returns NULL if count or el_size are zero.
2963 void *_talloc_zero_array_zeronull(const void *ctx, size_t el_size, unsigned count, const char *name)
2965 if (count >= MAX_TALLOC_SIZE/el_size) {
2969 if (el_size == 0 || count == 0) {
2973 return _talloc_zero(ctx, el_size * count, name);
2977 * Talloc wrapper that returns NULL if size == 0.
2979 void *talloc_zeronull(const void *context, size_t size, const char *name)
2984 return talloc_named_const(context, size, name);
2988 bool is_valid_policy_hnd(const struct policy_handle *hnd)
2990 struct policy_handle tmp;
2992 return (memcmp(&tmp, hnd, sizeof(tmp)) != 0);
2995 bool policy_hnd_equal(const struct policy_handle *hnd1,
2996 const struct policy_handle *hnd2)
2998 if (!hnd1 || !hnd2) {
3002 return (memcmp(hnd1, hnd2, sizeof(*hnd1)) == 0);
3005 /****************************************************************
3006 strip off leading '\\' from a hostname
3007 ****************************************************************/
3009 const char *strip_hostname(const char *s)
3015 if (strlen_m(s) < 3) {
3019 if (s[0] == '\\') s++;
3020 if (s[0] == '\\') s++;
3025 bool tevent_req_poll_ntstatus(struct tevent_req *req,
3026 struct tevent_context *ev,
3029 bool ret = tevent_req_poll(req, ev);
3031 *status = map_nt_error_from_unix(errno);