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/>.
27 extern char *global_clobber_region_function;
28 extern unsigned int global_clobber_region_line;
30 /* Max allowable allococation - 256mb - 0x10000000 */
31 #define MAX_ALLOC_SIZE (1024*1024*256)
33 #if (defined(HAVE_NETGROUP) && defined (WITH_AUTOMOUNT))
34 #ifdef WITH_NISPLUS_HOME
35 #ifdef BROKEN_NISPLUS_INCLUDE_FILES
37 * The following lines are needed due to buggy include files
38 * in Solaris 2.6 which define GROUP in both /usr/include/sys/acl.h and
39 * also in /usr/include/rpcsvc/nis.h. The definitions conflict. JRA.
40 * Also GROUP_OBJ is defined as 0x4 in /usr/include/sys/acl.h and as
41 * an enum in /usr/include/rpcsvc/nis.h.
48 #if defined(GROUP_OBJ)
52 #endif /* BROKEN_NISPLUS_INCLUDE_FILES */
54 #include <rpcsvc/nis.h>
56 #endif /* WITH_NISPLUS_HOME */
57 #endif /* HAVE_NETGROUP && WITH_AUTOMOUNT */
59 static enum protocol_types Protocol = PROTOCOL_COREPLUS;
61 enum protocol_types get_Protocol(void)
66 void set_Protocol(enum protocol_types p)
71 static enum remote_arch_types ra_type = RA_UNKNOWN;
73 /***********************************************************************
74 Definitions for all names.
75 ***********************************************************************/
77 static char *smb_scope;
78 static int smb_num_netbios_names;
79 static char **smb_my_netbios_names;
81 /***********************************************************************
82 Allocate and set scope. Ensure upper case.
83 ***********************************************************************/
85 bool set_global_scope(const char *scope)
88 smb_scope = SMB_STRDUP(scope);
91 strupper_m(smb_scope);
95 /*********************************************************************
96 Ensure scope is never null string.
97 *********************************************************************/
99 const char *global_scope(void)
102 set_global_scope("");
106 static void free_netbios_names_array(void)
110 for (i = 0; i < smb_num_netbios_names; i++)
111 SAFE_FREE(smb_my_netbios_names[i]);
113 SAFE_FREE(smb_my_netbios_names);
114 smb_num_netbios_names = 0;
117 static bool allocate_my_netbios_names_array(size_t number)
119 free_netbios_names_array();
121 smb_num_netbios_names = number + 1;
122 smb_my_netbios_names = SMB_MALLOC_ARRAY( char *, smb_num_netbios_names );
124 if (!smb_my_netbios_names)
127 memset(smb_my_netbios_names, '\0', sizeof(char *) * smb_num_netbios_names);
131 static bool set_my_netbios_names(const char *name, int i)
133 SAFE_FREE(smb_my_netbios_names[i]);
135 smb_my_netbios_names[i] = SMB_STRDUP(name);
136 if (!smb_my_netbios_names[i])
138 strupper_m(smb_my_netbios_names[i]);
142 /***********************************************************************
143 Free memory allocated to global objects
144 ***********************************************************************/
146 void gfree_names(void)
148 gfree_netbios_names();
149 SAFE_FREE( smb_scope );
150 free_netbios_names_array();
151 free_local_machine_name();
154 void gfree_all( void )
164 const char *my_netbios_names(int i)
166 return smb_my_netbios_names[i];
169 bool set_netbios_aliases(const char **str_array)
173 /* Work out the max number of netbios aliases that we have */
174 for( namecount=0; str_array && (str_array[namecount] != NULL); namecount++ )
177 if ( global_myname() && *global_myname())
180 /* Allocate space for the netbios aliases */
181 if (!allocate_my_netbios_names_array(namecount))
184 /* Use the global_myname string first */
186 if ( global_myname() && *global_myname()) {
187 set_my_netbios_names( global_myname(), namecount );
193 for ( i = 0; str_array[i] != NULL; i++) {
195 bool duplicate = False;
197 /* Look for duplicates */
198 for( n=0; n<namecount; n++ ) {
199 if( strequal( str_array[i], my_netbios_names(n) ) ) {
205 if (!set_my_netbios_names(str_array[i], namecount))
214 /****************************************************************************
215 Common name initialization code.
216 ****************************************************************************/
218 bool init_names(void)
222 if (global_myname() == NULL || *global_myname() == '\0') {
223 if (!set_global_myname(myhostname())) {
224 DEBUG( 0, ( "init_structs: malloc fail.\n" ) );
229 if (!set_netbios_aliases(lp_netbios_aliases())) {
230 DEBUG( 0, ( "init_structs: malloc fail.\n" ) );
234 set_local_machine_name(global_myname(),false);
236 DEBUG( 5, ("Netbios name list:-\n") );
237 for( n=0; my_netbios_names(n); n++ ) {
238 DEBUGADD( 5, ("my_netbios_names[%d]=\"%s\"\n",
239 n, my_netbios_names(n) ) );
245 /**************************************************************************n
246 Code to cope with username/password auth options from the commandline.
247 Used mainly in client tools.
248 ****************************************************************************/
250 struct user_auth_info *user_auth_info_init(TALLOC_CTX *mem_ctx)
252 struct user_auth_info *result;
254 result = TALLOC_ZERO_P(mem_ctx, struct user_auth_info);
255 if (result == NULL) {
259 result->signing_state = Undefined;
263 const char *get_cmdline_auth_info_username(const struct user_auth_info *auth_info)
265 if (!auth_info->username) {
268 return auth_info->username;
271 void set_cmdline_auth_info_username(struct user_auth_info *auth_info,
272 const char *username)
274 TALLOC_FREE(auth_info->username);
275 auth_info->username = talloc_strdup(auth_info, username);
276 if (!auth_info->username) {
281 const char *get_cmdline_auth_info_domain(const struct user_auth_info *auth_info)
283 if (!auth_info->domain) {
286 return auth_info->domain;
289 void set_cmdline_auth_info_domain(struct user_auth_info *auth_info,
292 TALLOC_FREE(auth_info->domain);
293 auth_info->domain = talloc_strdup(auth_info, domain);
294 if (!auth_info->domain) {
299 const char *get_cmdline_auth_info_password(const struct user_auth_info *auth_info)
301 if (!auth_info->password) {
304 return auth_info->password;
307 void set_cmdline_auth_info_password(struct user_auth_info *auth_info,
308 const char *password)
310 TALLOC_FREE(auth_info->password);
311 if (password == NULL) {
314 auth_info->password = talloc_strdup(auth_info, password);
315 if (!auth_info->password) {
318 auth_info->got_pass = true;
321 bool set_cmdline_auth_info_signing_state(struct user_auth_info *auth_info,
324 auth_info->signing_state = -1;
325 if (strequal(arg, "off") || strequal(arg, "no") ||
326 strequal(arg, "false")) {
327 auth_info->signing_state = false;
328 } else if (strequal(arg, "on") || strequal(arg, "yes") ||
329 strequal(arg, "true") || strequal(arg, "auto")) {
330 auth_info->signing_state = true;
331 } else if (strequal(arg, "force") || strequal(arg, "required") ||
332 strequal(arg, "forced")) {
333 auth_info->signing_state = Required;
340 int get_cmdline_auth_info_signing_state(const struct user_auth_info *auth_info)
342 return auth_info->signing_state;
345 void set_cmdline_auth_info_use_ccache(struct user_auth_info *auth_info, bool b)
347 auth_info->use_ccache = b;
350 bool get_cmdline_auth_info_use_ccache(const struct user_auth_info *auth_info)
352 return auth_info->use_ccache;
355 void set_cmdline_auth_info_use_kerberos(struct user_auth_info *auth_info,
358 auth_info->use_kerberos = b;
361 bool get_cmdline_auth_info_use_kerberos(const struct user_auth_info *auth_info)
363 return auth_info->use_kerberos;
366 void set_cmdline_auth_info_fallback_after_kerberos(struct user_auth_info *auth_info,
369 auth_info->fallback_after_kerberos = b;
372 bool get_cmdline_auth_info_fallback_after_kerberos(const struct user_auth_info *auth_info)
374 return auth_info->fallback_after_kerberos;
377 /* This should only be used by lib/popt_common.c JRA */
378 void set_cmdline_auth_info_use_krb5_ticket(struct user_auth_info *auth_info)
380 auth_info->use_kerberos = true;
381 auth_info->got_pass = true;
384 /* This should only be used by lib/popt_common.c JRA */
385 void set_cmdline_auth_info_smb_encrypt(struct user_auth_info *auth_info)
387 auth_info->smb_encrypt = true;
390 void set_cmdline_auth_info_use_machine_account(struct user_auth_info *auth_info)
392 auth_info->use_machine_account = true;
395 bool get_cmdline_auth_info_got_pass(const struct user_auth_info *auth_info)
397 return auth_info->got_pass;
400 bool get_cmdline_auth_info_smb_encrypt(const struct user_auth_info *auth_info)
402 return auth_info->smb_encrypt;
405 bool get_cmdline_auth_info_use_machine_account(const struct user_auth_info *auth_info)
407 return auth_info->use_machine_account;
410 struct user_auth_info *get_cmdline_auth_info_copy(TALLOC_CTX *mem_ctx,
411 const struct user_auth_info *src)
413 struct user_auth_info *result;
415 result = user_auth_info_init(mem_ctx);
416 if (result == NULL) {
422 result->username = talloc_strdup(
423 result, get_cmdline_auth_info_username(src));
424 result->password = talloc_strdup(
425 result, get_cmdline_auth_info_password(src));
426 if ((result->username == NULL) || (result->password == NULL)) {
434 bool set_cmdline_auth_info_machine_account_creds(struct user_auth_info *auth_info)
437 char *account = NULL;
439 if (!get_cmdline_auth_info_use_machine_account(auth_info)) {
443 if (!secrets_init()) {
444 d_printf("ERROR: Unable to open secrets database\n");
448 if (asprintf(&account, "%s$@%s", global_myname(), lp_realm()) < 0) {
452 pass = secrets_fetch_machine_password(lp_workgroup(), NULL, NULL);
454 d_printf("ERROR: Unable to fetch machine password for "
456 account, lp_workgroup());
461 set_cmdline_auth_info_username(auth_info, account);
462 set_cmdline_auth_info_password(auth_info, pass);
470 /****************************************************************************
471 Ensure we have a password if one not given.
472 ****************************************************************************/
474 void set_cmdline_auth_info_getpass(struct user_auth_info *auth_info)
480 if (get_cmdline_auth_info_got_pass(auth_info) ||
481 get_cmdline_auth_info_use_kerberos(auth_info)) {
482 /* Already got one... */
486 frame = talloc_stackframe();
487 label = talloc_asprintf(frame, "Enter %s's password: ",
488 get_cmdline_auth_info_username(auth_info));
489 pass = getpass(label);
491 set_cmdline_auth_info_password(auth_info, pass);
496 /*******************************************************************
497 Check if a file exists - call vfs_file_exist for samba files.
498 ********************************************************************/
500 bool file_exist_stat(const char *fname,SMB_STRUCT_STAT *sbuf,
501 bool fake_dir_create_times)
507 if (sys_stat(fname, sbuf, fake_dir_create_times) != 0)
510 return((S_ISREG(sbuf->st_ex_mode)) || (S_ISFIFO(sbuf->st_ex_mode)));
513 /*******************************************************************
514 Check if a unix domain socket exists - call vfs_file_exist for samba files.
515 ********************************************************************/
517 bool socket_exist(const char *fname)
520 if (sys_stat(fname, &st, false) != 0)
523 return S_ISSOCK(st.st_ex_mode);
526 /*******************************************************************
527 Returns the size in bytes of the named given the stat struct.
528 ********************************************************************/
530 uint64_t get_file_size_stat(const SMB_STRUCT_STAT *sbuf)
532 return sbuf->st_ex_size;
535 /*******************************************************************
536 Returns the size in bytes of the named file.
537 ********************************************************************/
539 SMB_OFF_T get_file_size(char *file_name)
543 if (sys_stat(file_name, &buf, false) != 0)
544 return (SMB_OFF_T)-1;
545 return get_file_size_stat(&buf);
548 /*******************************************************************
549 Return a string representing an attribute for a file.
550 ********************************************************************/
552 char *attrib_string(uint16 mode)
558 if (mode & aVOLID) fstrcat(attrstr,"V");
559 if (mode & aDIR) fstrcat(attrstr,"D");
560 if (mode & aARCH) fstrcat(attrstr,"A");
561 if (mode & aHIDDEN) fstrcat(attrstr,"H");
562 if (mode & aSYSTEM) fstrcat(attrstr,"S");
563 if (mode & aRONLY) fstrcat(attrstr,"R");
565 return talloc_strdup(talloc_tos(), attrstr);
568 /*******************************************************************
569 Show a smb message structure.
570 ********************************************************************/
572 void show_msg(char *buf)
580 DEBUG(5,("size=%d\nsmb_com=0x%x\nsmb_rcls=%d\nsmb_reh=%d\nsmb_err=%d\nsmb_flg=%d\nsmb_flg2=%d\n",
582 (int)CVAL(buf,smb_com),
583 (int)CVAL(buf,smb_rcls),
584 (int)CVAL(buf,smb_reh),
585 (int)SVAL(buf,smb_err),
586 (int)CVAL(buf,smb_flg),
587 (int)SVAL(buf,smb_flg2)));
588 DEBUGADD(5,("smb_tid=%d\nsmb_pid=%d\nsmb_uid=%d\nsmb_mid=%d\n",
589 (int)SVAL(buf,smb_tid),
590 (int)SVAL(buf,smb_pid),
591 (int)SVAL(buf,smb_uid),
592 (int)SVAL(buf,smb_mid)));
593 DEBUGADD(5,("smt_wct=%d\n",(int)CVAL(buf,smb_wct)));
595 for (i=0;i<(int)CVAL(buf,smb_wct);i++)
596 DEBUGADD(5,("smb_vwv[%2d]=%5d (0x%X)\n",i,
597 SVAL(buf,smb_vwv+2*i),SVAL(buf,smb_vwv+2*i)));
599 bcc = (int)SVAL(buf,smb_vwv+2*(CVAL(buf,smb_wct)));
601 DEBUGADD(5,("smb_bcc=%d\n",bcc));
609 dump_data(10, (uint8 *)smb_buf(buf), bcc);
612 /*******************************************************************
613 Set the length and marker of an encrypted smb packet.
614 ********************************************************************/
616 void smb_set_enclen(char *buf,int len,uint16 enc_ctx_num)
618 _smb_setlen(buf,len);
622 SSVAL(buf,6,enc_ctx_num);
625 /*******************************************************************
626 Set the length and marker of an smb packet.
627 ********************************************************************/
629 void smb_setlen(char *buf,int len)
631 _smb_setlen(buf,len);
639 /*******************************************************************
640 Setup only the byte count for a smb message.
641 ********************************************************************/
643 int set_message_bcc(char *buf,int num_bytes)
645 int num_words = CVAL(buf,smb_wct);
646 SSVAL(buf,smb_vwv + num_words*SIZEOFWORD,num_bytes);
647 _smb_setlen(buf,smb_size + num_words*2 + num_bytes - 4);
648 return (smb_size + num_words*2 + num_bytes);
651 /*******************************************************************
652 Add a data blob to the end of a smb_buf, adjusting bcc and smb_len.
653 Return the bytes added
654 ********************************************************************/
656 ssize_t message_push_blob(uint8 **outbuf, DATA_BLOB blob)
658 size_t newlen = smb_len(*outbuf) + 4 + blob.length;
661 if (!(tmp = TALLOC_REALLOC_ARRAY(NULL, *outbuf, uint8, newlen))) {
662 DEBUG(0, ("talloc failed\n"));
667 memcpy(tmp + smb_len(tmp) + 4, blob.data, blob.length);
668 set_message_bcc((char *)tmp, smb_buflen(tmp) + blob.length);
672 /*******************************************************************
673 Reduce a file name, removing .. elements.
674 ********************************************************************/
676 static char *dos_clean_name(TALLOC_CTX *ctx, const char *s)
681 DEBUG(3,("dos_clean_name [%s]\n",s));
683 /* remove any double slashes */
684 str = talloc_all_string_sub(ctx, s, "\\\\", "\\");
689 /* Remove leading .\\ characters */
690 if(strncmp(str, ".\\", 2) == 0) {
691 trim_string(str, ".\\", NULL);
693 str = talloc_strdup(ctx, ".\\");
700 while ((p = strstr_m(str,"\\..\\")) != NULL) {
706 if ((p=strrchr_m(str,'\\')) != NULL) {
711 str = talloc_asprintf(ctx,
720 trim_string(str,NULL,"\\..");
721 return talloc_all_string_sub(ctx, str, "\\.\\", "\\");
724 /*******************************************************************
725 Reduce a file name, removing .. elements.
726 ********************************************************************/
728 char *unix_clean_name(TALLOC_CTX *ctx, const char *s)
733 DEBUG(3,("unix_clean_name [%s]\n",s));
735 /* remove any double slashes */
736 str = talloc_all_string_sub(ctx, s, "//","/");
741 /* Remove leading ./ characters */
742 if(strncmp(str, "./", 2) == 0) {
743 trim_string(str, "./", NULL);
745 str = talloc_strdup(ctx, "./");
752 while ((p = strstr_m(str,"/../")) != NULL) {
758 if ((p=strrchr_m(str,'/')) != NULL) {
763 str = talloc_asprintf(ctx,
772 trim_string(str,NULL,"/..");
773 return talloc_all_string_sub(ctx, str, "/./", "/");
776 char *clean_name(TALLOC_CTX *ctx, const char *s)
778 char *str = dos_clean_name(ctx, s);
782 return unix_clean_name(ctx, str);
785 /*******************************************************************
786 Write data into an fd at a given offset. Ignore seek errors.
787 ********************************************************************/
789 ssize_t write_data_at_offset(int fd, const char *buffer, size_t N, SMB_OFF_T pos)
794 if (pos == (SMB_OFF_T)-1) {
795 return write_data(fd, buffer, N);
797 #if defined(HAVE_PWRITE) || defined(HAVE_PRWITE64)
799 ret = sys_pwrite(fd,buffer + total,N - total, pos);
800 if (ret == -1 && errno == ESPIPE) {
801 return write_data(fd, buffer + total,N - total);
804 DEBUG(0,("write_data_at_offset: write failure. Error = %s\n", strerror(errno) ));
813 return (ssize_t)total;
815 /* Use lseek and write_data. */
816 if (sys_lseek(fd, pos, SEEK_SET) == -1) {
817 if (errno != ESPIPE) {
821 return write_data(fd, buffer, N);
825 /*******************************************************************
826 Sleep for a specified number of milliseconds.
827 ********************************************************************/
829 void smb_msleep(unsigned int t)
831 #if defined(HAVE_NANOSLEEP)
832 struct timespec tval;
835 tval.tv_sec = t/1000;
836 tval.tv_nsec = 1000000*(t%1000);
840 ret = nanosleep(&tval, &tval);
841 } while (ret < 0 && errno == EINTR && (tval.tv_sec > 0 || tval.tv_nsec > 0));
843 unsigned int tdiff=0;
844 struct timeval tval,t1,t2;
851 tval.tv_sec = (t-tdiff)/1000;
852 tval.tv_usec = 1000*((t-tdiff)%1000);
854 /* Never wait for more than 1 sec. */
855 if (tval.tv_sec > 1) {
862 sys_select_intr(0,&fds,NULL,NULL,&tval);
865 if (t2.tv_sec < t1.tv_sec) {
866 /* Someone adjusted time... */
870 tdiff = TvalDiff(&t1,&t2);
875 NTSTATUS reinit_after_fork(struct messaging_context *msg_ctx,
876 struct event_context *ev_ctx,
878 bool parent_longlived)
880 NTSTATUS status = NT_STATUS_OK;
882 /* Reset the state of the random
883 * number generation system, so
884 * children do not get the same random
885 * numbers as each other */
886 set_need_random_reseed();
888 /* tdb needs special fork handling */
889 if (tdb_reopen_all(parent_longlived ? 1 : 0) == -1) {
890 DEBUG(0,("tdb_reopen_all failed.\n"));
891 status = NT_STATUS_OPEN_FAILED;
895 if (ev_ctx && tevent_re_initialise(ev_ctx) != 0) {
896 smb_panic(__location__ ": Failed to re-initialise event context");
901 * For clustering, we need to re-init our ctdbd connection after the
904 status = messaging_reinit(msg_ctx, id);
905 if (!NT_STATUS_IS_OK(status)) {
906 DEBUG(0,("messaging_reinit() failed: %s\n",
914 #if defined(PARANOID_MALLOC_CHECKER)
916 /****************************************************************************
917 Internal malloc wrapper. Externally visible.
918 ****************************************************************************/
920 void *malloc_(size_t size)
927 #define malloc(s) __ERROR_DONT_USE_MALLOC_DIRECTLY
930 /****************************************************************************
931 Internal calloc wrapper. Not externally visible.
932 ****************************************************************************/
934 static void *calloc_(size_t count, size_t size)
936 if (size == 0 || count == 0) {
940 return calloc(count, size);
941 #define calloc(n,s) __ERROR_DONT_USE_CALLOC_DIRECTLY
944 /****************************************************************************
945 Internal realloc wrapper. Not externally visible.
946 ****************************************************************************/
948 static void *realloc_(void *ptr, size_t size)
951 return realloc(ptr, size);
952 #define realloc(p,s) __ERROR_DONT_USE_RELLOC_DIRECTLY
955 #endif /* PARANOID_MALLOC_CHECKER */
957 /****************************************************************************
959 ****************************************************************************/
961 void *memalign_array(size_t el_size, size_t align, unsigned int count)
963 if (count >= MAX_ALLOC_SIZE/el_size) {
967 return sys_memalign(align, el_size*count);
970 /****************************************************************************
972 ****************************************************************************/
974 void *calloc_array(size_t size, size_t nmemb)
976 if (nmemb >= MAX_ALLOC_SIZE/size) {
979 if (size == 0 || nmemb == 0) {
982 #if defined(PARANOID_MALLOC_CHECKER)
983 return calloc_(nmemb, size);
985 return calloc(nmemb, size);
989 /****************************************************************************
990 Expand a pointer to be a particular size.
991 Note that this version of Realloc has an extra parameter that decides
992 whether to free the passed in storage on allocation failure or if the
995 This is designed for use in the typical idiom of :
997 p = SMB_REALLOC(p, size)
1002 and not to have to keep track of the old 'p' contents to free later, nor
1003 to worry if the size parameter was zero. In the case where NULL is returned
1004 we guarentee that p has been freed.
1006 If free later semantics are desired, then pass 'free_old_on_error' as False which
1007 guarentees that the old contents are not freed on error, even if size == 0. To use
1010 tmp = SMB_REALLOC_KEEP_OLD_ON_ERROR(p, size);
1018 Changes were instigated by Coverity error checking. JRA.
1019 ****************************************************************************/
1021 void *Realloc(void *p, size_t size, bool free_old_on_error)
1026 if (free_old_on_error) {
1029 DEBUG(2,("Realloc asked for 0 bytes\n"));
1033 #if defined(PARANOID_MALLOC_CHECKER)
1035 ret = (void *)malloc_(size);
1037 ret = (void *)realloc_(p,size);
1041 ret = (void *)malloc(size);
1043 ret = (void *)realloc(p,size);
1048 if (free_old_on_error && p) {
1051 DEBUG(0,("Memory allocation error: failed to expand to %d bytes\n",(int)size));
1057 /****************************************************************************
1058 (Hopefully) efficient array append.
1059 ****************************************************************************/
1061 void add_to_large_array(TALLOC_CTX *mem_ctx, size_t element_size,
1062 void *element, void *_array, uint32 *num_elements,
1063 ssize_t *array_size)
1065 void **array = (void **)_array;
1067 if (*array_size < 0) {
1071 if (*array == NULL) {
1072 if (*array_size == 0) {
1076 if (*array_size >= MAX_ALLOC_SIZE/element_size) {
1080 *array = TALLOC(mem_ctx, element_size * (*array_size));
1081 if (*array == NULL) {
1086 if (*num_elements == *array_size) {
1089 if (*array_size >= MAX_ALLOC_SIZE/element_size) {
1093 *array = TALLOC_REALLOC(mem_ctx, *array,
1094 element_size * (*array_size));
1096 if (*array == NULL) {
1101 memcpy((char *)(*array) + element_size*(*num_elements),
1102 element, element_size);
1112 /****************************************************************************
1113 Get my own domain name, or "" if we have none.
1114 ****************************************************************************/
1116 char *get_mydnsdomname(TALLOC_CTX *ctx)
1118 const char *domname;
1121 domname = get_mydnsfullname();
1126 p = strchr_m(domname, '.');
1129 return talloc_strdup(ctx, p);
1131 return talloc_strdup(ctx, "");
1135 /****************************************************************************
1136 Interpret a protocol description string, with a default.
1137 ****************************************************************************/
1139 int interpret_protocol(const char *str,int def)
1141 if (strequal(str,"NT1"))
1142 return(PROTOCOL_NT1);
1143 if (strequal(str,"LANMAN2"))
1144 return(PROTOCOL_LANMAN2);
1145 if (strequal(str,"LANMAN1"))
1146 return(PROTOCOL_LANMAN1);
1147 if (strequal(str,"CORE"))
1148 return(PROTOCOL_CORE);
1149 if (strequal(str,"COREPLUS"))
1150 return(PROTOCOL_COREPLUS);
1151 if (strequal(str,"CORE+"))
1152 return(PROTOCOL_COREPLUS);
1154 DEBUG(0,("Unrecognised protocol level %s\n",str));
1160 #if (defined(HAVE_NETGROUP) && defined(WITH_AUTOMOUNT))
1161 /******************************************************************
1162 Remove any mount options such as -rsize=2048,wsize=2048 etc.
1163 Based on a fix from <Thomas.Hepper@icem.de>.
1164 Returns a malloc'ed string.
1165 *******************************************************************/
1167 static char *strip_mount_options(TALLOC_CTX *ctx, const char *str)
1170 const char *p = str;
1171 while(*p && !isspace(*p))
1173 while(*p && isspace(*p))
1176 return talloc_strdup(ctx, p);
1182 /*******************************************************************
1183 Patch from jkf@soton.ac.uk
1184 Split Luke's automount_server into YP lookup and string splitter
1185 so can easily implement automount_path().
1186 Returns a malloc'ed string.
1187 *******************************************************************/
1189 #ifdef WITH_NISPLUS_HOME
1190 char *automount_lookup(TALLOC_CTX *ctx, const char *user_name)
1194 char *nis_map = (char *)lp_nis_home_map_name();
1196 char buffer[NIS_MAXATTRVAL + 1];
1201 snprintf(buffer, sizeof(buffer), "[key=%s],%s", user_name, nis_map);
1202 DEBUG(5, ("NIS+ querystring: %s\n", buffer));
1204 if (result = nis_list(buffer, FOLLOW_PATH|EXPAND_NAME|HARD_LOOKUP, NULL, NULL)) {
1205 if (result->status != NIS_SUCCESS) {
1206 DEBUG(3, ("NIS+ query failed: %s\n", nis_sperrno(result->status)));
1208 object = result->objects.objects_val;
1209 if (object->zo_data.zo_type == ENTRY_OBJ) {
1210 entry = &object->zo_data.objdata_u.en_data;
1211 DEBUG(5, ("NIS+ entry type: %s\n", entry->en_type));
1212 DEBUG(3, ("NIS+ result: %s\n", entry->en_cols.en_cols_val[1].ec_value.ec_value_val));
1214 value = talloc_strdup(ctx,
1215 entry->en_cols.en_cols_val[1].ec_value.ec_value_val);
1217 nis_freeresult(result);
1220 value = talloc_string_sub(ctx,
1227 nis_freeresult(result);
1230 value = strip_mount_options(ctx, value);
1231 DEBUG(4, ("NIS+ Lookup: %s resulted in %s\n",
1236 #else /* WITH_NISPLUS_HOME */
1238 char *automount_lookup(TALLOC_CTX *ctx, const char *user_name)
1242 int nis_error; /* returned by yp all functions */
1243 char *nis_result; /* yp_match inits this */
1244 int nis_result_len; /* and set this */
1245 char *nis_domain; /* yp_get_default_domain inits this */
1246 char *nis_map = (char *)lp_nis_home_map_name();
1248 if ((nis_error = yp_get_default_domain(&nis_domain)) != 0) {
1249 DEBUG(3, ("YP Error: %s\n", yperr_string(nis_error)));
1253 DEBUG(5, ("NIS Domain: %s\n", nis_domain));
1255 if ((nis_error = yp_match(nis_domain, nis_map, user_name,
1256 strlen(user_name), &nis_result,
1257 &nis_result_len)) == 0) {
1258 if (nis_result_len > 0 && nis_result[nis_result_len] == '\n') {
1259 nis_result[nis_result_len] = '\0';
1261 value = talloc_strdup(ctx, nis_result);
1265 value = strip_mount_options(ctx, value);
1266 } else if(nis_error == YPERR_KEY) {
1267 DEBUG(3, ("YP Key not found: while looking up \"%s\" in map \"%s\"\n",
1268 user_name, nis_map));
1269 DEBUG(3, ("using defaults for server and home directory\n"));
1271 DEBUG(3, ("YP Error: \"%s\" while looking up \"%s\" in map \"%s\"\n",
1272 yperr_string(nis_error), user_name, nis_map));
1276 DEBUG(4, ("YP Lookup: %s resulted in %s\n", user_name, value));
1280 #endif /* WITH_NISPLUS_HOME */
1283 /****************************************************************************
1284 Check if a process exists. Does this work on all unixes?
1285 ****************************************************************************/
1287 bool process_exists(const struct server_id pid)
1289 if (procid_is_me(&pid)) {
1293 if (procid_is_local(&pid)) {
1294 return (kill(pid.pid,0) == 0 || errno != ESRCH);
1297 #ifdef CLUSTER_SUPPORT
1298 return ctdbd_process_exists(messaging_ctdbd_connection(procid_self()),
1305 /*******************************************************************
1306 Convert a uid into a user name.
1307 ********************************************************************/
1309 const char *uidtoname(uid_t uid)
1311 TALLOC_CTX *ctx = talloc_tos();
1313 struct passwd *pass = NULL;
1315 pass = getpwuid_alloc(ctx,uid);
1317 name = talloc_strdup(ctx,pass->pw_name);
1320 name = talloc_asprintf(ctx,
1327 /*******************************************************************
1328 Convert a gid into a group name.
1329 ********************************************************************/
1331 char *gidtoname(gid_t gid)
1335 grp = getgrgid(gid);
1337 return talloc_strdup(talloc_tos(), grp->gr_name);
1340 return talloc_asprintf(talloc_tos(),
1346 /*******************************************************************
1347 Convert a user name into a uid.
1348 ********************************************************************/
1350 uid_t nametouid(const char *name)
1352 struct passwd *pass;
1356 pass = getpwnam_alloc(talloc_autofree_context(), name);
1363 u = (uid_t)strtol(name, &p, 0);
1364 if ((p != name) && (*p == '\0'))
1370 /*******************************************************************
1371 Convert a name to a gid_t if possible. Return -1 if not a group.
1372 ********************************************************************/
1374 gid_t nametogid(const char *name)
1380 g = (gid_t)strtol(name, &p, 0);
1381 if ((p != name) && (*p == '\0'))
1384 grp = sys_getgrnam(name);
1386 return(grp->gr_gid);
1390 /*******************************************************************
1391 Something really nasty happened - panic !
1392 ********************************************************************/
1394 void smb_panic(const char *const why)
1402 if (global_clobber_region_function) {
1403 DEBUG(0,("smb_panic: clobber_region() last called from [%s(%u)]\n",
1404 global_clobber_region_function,
1405 global_clobber_region_line));
1410 DEBUG(0,("PANIC (pid %llu): %s\n",
1411 (unsigned long long)sys_getpid(), why));
1414 cmd = lp_panic_action();
1416 DEBUG(0, ("smb_panic(): calling panic action [%s]\n", cmd));
1417 result = system(cmd);
1420 DEBUG(0, ("smb_panic(): fork failed in panic action: %s\n",
1423 DEBUG(0, ("smb_panic(): action returned status %d\n",
1424 WEXITSTATUS(result)));
1430 /*******************************************************************
1431 Print a backtrace of the stack to the debug log. This function
1432 DELIBERATELY LEAKS MEMORY. The expectation is that you should
1433 exit shortly after calling it.
1434 ********************************************************************/
1436 #ifdef HAVE_LIBUNWIND_H
1437 #include <libunwind.h>
1440 #ifdef HAVE_EXECINFO_H
1441 #include <execinfo.h>
1444 #ifdef HAVE_LIBEXC_H
1448 void log_stack_trace(void)
1450 #ifdef HAVE_LIBUNWIND
1451 /* Try to use libunwind before any other technique since on ia64
1452 * libunwind correctly walks the stack in more circumstances than
1455 unw_cursor_t cursor;
1460 unw_word_t ip, sp, off;
1462 procname[sizeof(procname) - 1] = '\0';
1464 if (unw_getcontext(&uc) != 0) {
1465 goto libunwind_failed;
1468 if (unw_init_local(&cursor, &uc) != 0) {
1469 goto libunwind_failed;
1472 DEBUG(0, ("BACKTRACE:\n"));
1476 unw_get_reg(&cursor, UNW_REG_IP, &ip);
1477 unw_get_reg(&cursor, UNW_REG_SP, &sp);
1479 switch (unw_get_proc_name(&cursor,
1480 procname, sizeof(procname) - 1, &off) ) {
1484 /* Name truncated. */
1485 DEBUGADD(0, (" #%u %s + %#llx [ip=%#llx] [sp=%#llx]\n",
1486 i, procname, (long long)off,
1487 (long long)ip, (long long) sp));
1490 /* case -UNW_ENOINFO: */
1491 /* case -UNW_EUNSPEC: */
1492 /* No symbol name found. */
1493 DEBUGADD(0, (" #%u %s [ip=%#llx] [sp=%#llx]\n",
1494 i, "<unknown symbol>",
1495 (long long)ip, (long long) sp));
1498 } while (unw_step(&cursor) > 0);
1503 DEBUG(0, ("unable to produce a stack trace with libunwind\n"));
1505 #elif HAVE_BACKTRACE_SYMBOLS
1506 void *backtrace_stack[BACKTRACE_STACK_SIZE];
1507 size_t backtrace_size;
1508 char **backtrace_strings;
1510 /* get the backtrace (stack frames) */
1511 backtrace_size = backtrace(backtrace_stack,BACKTRACE_STACK_SIZE);
1512 backtrace_strings = backtrace_symbols(backtrace_stack, backtrace_size);
1514 DEBUG(0, ("BACKTRACE: %lu stack frames:\n",
1515 (unsigned long)backtrace_size));
1517 if (backtrace_strings) {
1520 for (i = 0; i < backtrace_size; i++)
1521 DEBUGADD(0, (" #%u %s\n", i, backtrace_strings[i]));
1523 /* Leak the backtrace_strings, rather than risk what free() might do */
1528 /* The IRIX libexc library provides an API for unwinding the stack. See
1529 * libexc(3) for details. Apparantly trace_back_stack leaks memory, but
1530 * since we are about to abort anyway, it hardly matters.
1533 #define NAMESIZE 32 /* Arbitrary */
1535 __uint64_t addrs[BACKTRACE_STACK_SIZE];
1536 char * names[BACKTRACE_STACK_SIZE];
1537 char namebuf[BACKTRACE_STACK_SIZE * NAMESIZE];
1544 ZERO_ARRAY(namebuf);
1546 /* We need to be root so we can open our /proc entry to walk
1547 * our stack. It also helps when we want to dump core.
1551 for (i = 0; i < BACKTRACE_STACK_SIZE; i++) {
1552 names[i] = namebuf + (i * NAMESIZE);
1555 levels = trace_back_stack(0, addrs, names,
1556 BACKTRACE_STACK_SIZE, NAMESIZE - 1);
1558 DEBUG(0, ("BACKTRACE: %d stack frames:\n", levels));
1559 for (i = 0; i < levels; i++) {
1560 DEBUGADD(0, (" #%d 0x%llx %s\n", i, addrs[i], names[i]));
1565 DEBUG(0, ("unable to produce a stack trace on this platform\n"));
1569 /*******************************************************************
1570 A readdir wrapper which just returns the file name.
1571 ********************************************************************/
1573 const char *readdirname(SMB_STRUCT_DIR *p)
1575 SMB_STRUCT_DIRENT *ptr;
1581 ptr = (SMB_STRUCT_DIRENT *)sys_readdir(p);
1585 dname = ptr->d_name;
1592 #ifdef HAVE_BROKEN_READDIR_NAME
1593 /* using /usr/ucb/cc is BAD */
1597 return talloc_strdup(talloc_tos(), dname);
1600 /*******************************************************************
1601 Utility function used to decide if the last component
1602 of a path matches a (possibly wildcarded) entry in a namelist.
1603 ********************************************************************/
1605 bool is_in_path(const char *name, name_compare_entry *namelist, bool case_sensitive)
1607 const char *last_component;
1609 /* if we have no list it's obviously not in the path */
1610 if((namelist == NULL ) || ((namelist != NULL) && (namelist[0].name == NULL))) {
1614 DEBUG(8, ("is_in_path: %s\n", name));
1616 /* Get the last component of the unix name. */
1617 last_component = strrchr_m(name, '/');
1618 if (!last_component) {
1619 last_component = name;
1621 last_component++; /* Go past '/' */
1624 for(; namelist->name != NULL; namelist++) {
1625 if(namelist->is_wild) {
1626 if (mask_match(last_component, namelist->name, case_sensitive)) {
1627 DEBUG(8,("is_in_path: mask match succeeded\n"));
1631 if((case_sensitive && (strcmp(last_component, namelist->name) == 0))||
1632 (!case_sensitive && (StrCaseCmp(last_component, namelist->name) == 0))) {
1633 DEBUG(8,("is_in_path: match succeeded\n"));
1638 DEBUG(8,("is_in_path: match not found\n"));
1642 /*******************************************************************
1643 Strip a '/' separated list into an array of
1644 name_compare_enties structures suitable for
1645 passing to is_in_path(). We do this for
1646 speed so we can pre-parse all the names in the list
1647 and don't do it for each call to is_in_path().
1648 namelist is modified here and is assumed to be
1649 a copy owned by the caller.
1650 We also check if the entry contains a wildcard to
1651 remove a potentially expensive call to mask_match
1653 ********************************************************************/
1655 void set_namearray(name_compare_entry **ppname_array, const char *namelist)
1658 char *nameptr = (char *)namelist;
1659 int num_entries = 0;
1662 (*ppname_array) = NULL;
1664 if((nameptr == NULL ) || ((nameptr != NULL) && (*nameptr == '\0')))
1667 /* We need to make two passes over the string. The
1668 first to count the number of elements, the second
1673 if ( *nameptr == '/' ) {
1674 /* cope with multiple (useless) /s) */
1678 /* anything left? */
1679 if ( *nameptr == '\0' )
1682 /* find the next '/' or consume remaining */
1683 name_end = strchr_m(nameptr, '/');
1684 if (name_end == NULL)
1685 name_end = (char *)nameptr + strlen(nameptr);
1687 /* next segment please */
1688 nameptr = name_end + 1;
1692 if(num_entries == 0)
1695 if(( (*ppname_array) = SMB_MALLOC_ARRAY(name_compare_entry, num_entries + 1)) == NULL) {
1696 DEBUG(0,("set_namearray: malloc fail\n"));
1700 /* Now copy out the names */
1701 nameptr = (char *)namelist;
1704 if ( *nameptr == '/' ) {
1705 /* cope with multiple (useless) /s) */
1709 /* anything left? */
1710 if ( *nameptr == '\0' )
1713 /* find the next '/' or consume remaining */
1714 name_end = strchr_m(nameptr, '/');
1718 name_end = nameptr + strlen(nameptr);
1720 (*ppname_array)[i].is_wild = ms_has_wild(nameptr);
1721 if(((*ppname_array)[i].name = SMB_STRDUP(nameptr)) == NULL) {
1722 DEBUG(0,("set_namearray: malloc fail (1)\n"));
1726 /* next segment please */
1727 nameptr = name_end + 1;
1731 (*ppname_array)[i].name = NULL;
1736 /****************************************************************************
1737 Routine to free a namearray.
1738 ****************************************************************************/
1740 void free_namearray(name_compare_entry *name_array)
1744 if(name_array == NULL)
1747 for(i=0; name_array[i].name!=NULL; i++)
1748 SAFE_FREE(name_array[i].name);
1749 SAFE_FREE(name_array);
1753 #define DBGC_CLASS DBGC_LOCKING
1755 /****************************************************************************
1756 Simple routine to query existing file locks. Cruft in NFS and 64->32 bit mapping
1757 is dealt with in posix.c
1758 Returns True if we have information regarding this lock region (and returns
1759 F_UNLCK in *ptype if the region is unlocked). False if the call failed.
1760 ****************************************************************************/
1762 bool fcntl_getlock(int fd, SMB_OFF_T *poffset, SMB_OFF_T *pcount, int *ptype, pid_t *ppid)
1764 SMB_STRUCT_FLOCK lock;
1767 DEBUG(8,("fcntl_getlock fd=%d offset=%.0f count=%.0f type=%d\n",
1768 fd,(double)*poffset,(double)*pcount,*ptype));
1770 lock.l_type = *ptype;
1771 lock.l_whence = SEEK_SET;
1772 lock.l_start = *poffset;
1773 lock.l_len = *pcount;
1776 ret = sys_fcntl_ptr(fd,SMB_F_GETLK,&lock);
1780 DEBUG(3,("fcntl_getlock: lock request failed at offset %.0f count %.0f type %d (%s)\n",
1781 (double)*poffset,(double)*pcount,*ptype,strerror(errno)));
1786 *ptype = lock.l_type;
1787 *poffset = lock.l_start;
1788 *pcount = lock.l_len;
1791 DEBUG(3,("fcntl_getlock: fd %d is returned info %d pid %u\n",
1792 fd, (int)lock.l_type, (unsigned int)lock.l_pid));
1797 #define DBGC_CLASS DBGC_ALL
1799 /*******************************************************************
1800 Is the name specified one of my netbios names.
1801 Returns true if it is equal, false otherwise.
1802 ********************************************************************/
1804 bool is_myname(const char *s)
1809 for (n=0; my_netbios_names(n); n++) {
1810 if (strequal(my_netbios_names(n), s)) {
1815 DEBUG(8, ("is_myname(\"%s\") returns %d\n", s, ret));
1819 /*******************************************************************
1820 Is the name specified our workgroup/domain.
1821 Returns true if it is equal, false otherwise.
1822 ********************************************************************/
1824 bool is_myworkgroup(const char *s)
1828 if (strequal(s, lp_workgroup())) {
1832 DEBUG(8, ("is_myworkgroup(\"%s\") returns %d\n", s, ret));
1836 /*******************************************************************
1837 we distinguish between 2K and XP by the "Native Lan Manager" string
1838 WinXP => "Windows 2002 5.1"
1839 WinXP 64bit => "Windows XP 5.2"
1840 Win2k => "Windows 2000 5.0"
1841 NT4 => "Windows NT 4.0"
1842 Win9x => "Windows 4.0"
1843 Windows 2003 doesn't set the native lan manager string but
1844 they do set the domain to "Windows 2003 5.2" (probably a bug).
1845 ********************************************************************/
1847 void ra_lanman_string( const char *native_lanman )
1849 if ( strcmp( native_lanman, "Windows 2002 5.1" ) == 0 )
1850 set_remote_arch( RA_WINXP );
1851 else if ( strcmp( native_lanman, "Windows XP 5.2" ) == 0 )
1852 set_remote_arch( RA_WINXP64 );
1853 else if ( strcmp( native_lanman, "Windows Server 2003 5.2" ) == 0 )
1854 set_remote_arch( RA_WIN2K3 );
1857 static const char *remote_arch_str;
1859 const char *get_remote_arch_str(void)
1861 if (!remote_arch_str) {
1864 return remote_arch_str;
1867 /*******************************************************************
1868 Set the horrid remote_arch string based on an enum.
1869 ********************************************************************/
1871 void set_remote_arch(enum remote_arch_types type)
1876 remote_arch_str = "WfWg";
1879 remote_arch_str = "OS2";
1882 remote_arch_str = "Win95";
1885 remote_arch_str = "WinNT";
1888 remote_arch_str = "Win2K";
1891 remote_arch_str = "WinXP";
1894 remote_arch_str = "WinXP64";
1897 remote_arch_str = "Win2K3";
1900 remote_arch_str = "Vista";
1903 remote_arch_str = "Samba";
1906 remote_arch_str = "CIFSFS";
1909 ra_type = RA_UNKNOWN;
1910 remote_arch_str = "UNKNOWN";
1914 DEBUG(10,("set_remote_arch: Client arch is \'%s\'\n",
1918 /*******************************************************************
1919 Get the remote_arch type.
1920 ********************************************************************/
1922 enum remote_arch_types get_remote_arch(void)
1927 const char *tab_depth(int level, int depth)
1929 if( CHECK_DEBUGLVL(level) ) {
1930 dbgtext("%*s", depth*4, "");
1935 /*****************************************************************************
1936 Provide a checksum on a string
1938 Input: s - the null-terminated character string for which the checksum
1941 Output: The checksum value calculated for s.
1942 *****************************************************************************/
1944 int str_checksum(const char *s)
1952 res ^= (c << (i % 15)) ^ (c >> (15-(i%15)));
1959 /*****************************************************************
1960 Zero a memory area then free it. Used to catch bugs faster.
1961 *****************************************************************/
1963 void zero_free(void *p, size_t size)
1969 /*****************************************************************
1970 Set our open file limit to a requested max and return the limit.
1971 *****************************************************************/
1973 int set_maxfiles(int requested_max)
1975 #if (defined(HAVE_GETRLIMIT) && defined(RLIMIT_NOFILE))
1977 int saved_current_limit;
1979 if(getrlimit(RLIMIT_NOFILE, &rlp)) {
1980 DEBUG(0,("set_maxfiles: getrlimit (1) for RLIMIT_NOFILE failed with error %s\n",
1983 return requested_max;
1987 * Set the fd limit to be real_max_open_files + MAX_OPEN_FUDGEFACTOR to
1988 * account for the extra fd we need
1989 * as well as the log files and standard
1990 * handles etc. Save the limit we want to set in case
1991 * we are running on an OS that doesn't support this limit (AIX)
1992 * which always returns RLIM_INFINITY for rlp.rlim_max.
1995 /* Try raising the hard (max) limit to the requested amount. */
1997 #if defined(RLIM_INFINITY)
1998 if (rlp.rlim_max != RLIM_INFINITY) {
1999 int orig_max = rlp.rlim_max;
2001 if ( rlp.rlim_max < requested_max )
2002 rlp.rlim_max = requested_max;
2004 /* This failing is not an error - many systems (Linux) don't
2005 support our default request of 10,000 open files. JRA. */
2007 if(setrlimit(RLIMIT_NOFILE, &rlp)) {
2008 DEBUG(3,("set_maxfiles: setrlimit for RLIMIT_NOFILE for %d max files failed with error %s\n",
2009 (int)rlp.rlim_max, strerror(errno) ));
2011 /* Set failed - restore original value from get. */
2012 rlp.rlim_max = orig_max;
2017 /* Now try setting the soft (current) limit. */
2019 saved_current_limit = rlp.rlim_cur = MIN(requested_max,rlp.rlim_max);
2021 if(setrlimit(RLIMIT_NOFILE, &rlp)) {
2022 DEBUG(0,("set_maxfiles: setrlimit for RLIMIT_NOFILE for %d files failed with error %s\n",
2023 (int)rlp.rlim_cur, strerror(errno) ));
2025 return saved_current_limit;
2028 if(getrlimit(RLIMIT_NOFILE, &rlp)) {
2029 DEBUG(0,("set_maxfiles: getrlimit (2) for RLIMIT_NOFILE failed with error %s\n",
2032 return saved_current_limit;
2035 #if defined(RLIM_INFINITY)
2036 if(rlp.rlim_cur == RLIM_INFINITY)
2037 return saved_current_limit;
2040 if((int)rlp.rlim_cur > saved_current_limit)
2041 return saved_current_limit;
2043 return rlp.rlim_cur;
2044 #else /* !defined(HAVE_GETRLIMIT) || !defined(RLIMIT_NOFILE) */
2046 * No way to know - just guess...
2048 return requested_max;
2052 /*****************************************************************
2053 malloc that aborts with smb_panic on fail or zero size.
2054 *****************************************************************/
2056 void *smb_xmalloc_array(size_t size, unsigned int count)
2060 smb_panic("smb_xmalloc_array: called with zero size");
2062 if (count >= MAX_ALLOC_SIZE/size) {
2063 smb_panic("smb_xmalloc_array: alloc size too large");
2065 if ((p = SMB_MALLOC(size*count)) == NULL) {
2066 DEBUG(0, ("smb_xmalloc_array failed to allocate %lu * %lu bytes\n",
2067 (unsigned long)size, (unsigned long)count));
2068 smb_panic("smb_xmalloc_array: malloc failed");
2074 vasprintf that aborts on malloc fail
2077 int smb_xvasprintf(char **ptr, const char *format, va_list ap)
2084 n = vasprintf(ptr, format, ap2);
2086 if (n == -1 || ! *ptr) {
2087 smb_panic("smb_xvasprintf: out of memory");
2092 /*****************************************************************
2093 Get local hostname and cache result.
2094 *****************************************************************/
2096 char *myhostname(void)
2100 /* This is cached forever so
2101 * use talloc_autofree_context() ctx. */
2102 ret = get_myname(talloc_autofree_context());
2108 * @brief Returns an absolute path to a file concatenating the provided
2109 * @a rootpath and @a basename
2111 * @param name Filename, relative to @a rootpath
2113 * @retval Pointer to a string containing the full path.
2116 static char *xx_path(const char *name, const char *rootpath)
2120 fname = talloc_strdup(talloc_tos(), rootpath);
2124 trim_string(fname,"","/");
2126 if (!directory_exist(fname)) {
2127 if (!mkdir(fname,0755))
2128 DEBUG(1, ("Unable to create directory %s for file %s. "
2129 "Error was %s\n", fname, name, strerror(errno)));
2132 return talloc_asprintf(talloc_tos(),
2139 * @brief Returns an absolute path to a file in the Samba lock directory.
2141 * @param name File to find, relative to LOCKDIR.
2143 * @retval Pointer to a talloc'ed string containing the full path.
2146 char *lock_path(const char *name)
2148 return xx_path(name, lp_lockdir());
2152 * @brief Returns an absolute path to a file in the Samba pid directory.
2154 * @param name File to find, relative to PIDDIR.
2156 * @retval Pointer to a talloc'ed string containing the full path.
2159 char *pid_path(const char *name)
2161 return xx_path(name, lp_piddir());
2165 * @brief Returns an absolute path to a file in the Samba lib directory.
2167 * @param name File to find, relative to LIBDIR.
2169 * @retval Pointer to a string containing the full path.
2172 char *lib_path(const char *name)
2174 return talloc_asprintf(talloc_tos(), "%s/%s", get_dyn_LIBDIR(), name);
2178 * @brief Returns an absolute path to a file in the Samba modules directory.
2180 * @param name File to find, relative to MODULESDIR.
2182 * @retval Pointer to a string containing the full path.
2185 char *modules_path(const char *name)
2187 return talloc_asprintf(talloc_tos(), "%s/%s", get_dyn_MODULESDIR(), name);
2191 * @brief Returns an absolute path to a file in the Samba data directory.
2193 * @param name File to find, relative to CODEPAGEDIR.
2195 * @retval Pointer to a talloc'ed string containing the full path.
2198 char *data_path(const char *name)
2200 return talloc_asprintf(talloc_tos(), "%s/%s", get_dyn_CODEPAGEDIR(), name);
2204 * @brief Returns an absolute path to a file in the Samba state directory.
2206 * @param name File to find, relative to STATEDIR.
2208 * @retval Pointer to a talloc'ed string containing the full path.
2211 char *state_path(const char *name)
2213 return xx_path(name, lp_statedir());
2217 * @brief Returns an absolute path to a file in the Samba cache directory.
2219 * @param name File to find, relative to CACHEDIR.
2221 * @retval Pointer to a talloc'ed string containing the full path.
2224 char *cache_path(const char *name)
2226 return xx_path(name, lp_cachedir());
2230 * @brief Returns the platform specific shared library extension.
2232 * @retval Pointer to a const char * containing the extension.
2235 const char *shlib_ext(void)
2237 return get_dyn_SHLIBEXT();
2240 /*******************************************************************
2241 Given a filename - get its directory name
2242 ********************************************************************/
2244 bool parent_dirname(TALLOC_CTX *mem_ctx, const char *dir, char **parent,
2250 p = strrchr_m(dir, '/'); /* Find final '/', if any */
2253 if (!(*parent = talloc_strdup(mem_ctx, "."))) {
2264 if (!(*parent = (char *)TALLOC_MEMDUP(mem_ctx, dir, len+1))) {
2267 (*parent)[len] = '\0';
2275 /*******************************************************************
2276 Determine if a pattern contains any Microsoft wildcard characters.
2277 *******************************************************************/
2279 bool ms_has_wild(const char *s)
2283 if (lp_posix_pathnames()) {
2284 /* With posix pathnames no characters are wild. */
2288 while ((c = *s++)) {
2301 bool ms_has_wild_w(const smb_ucs2_t *s)
2304 if (!s) return False;
2305 while ((c = *s++)) {
2307 case UCS2_CHAR('*'):
2308 case UCS2_CHAR('?'):
2309 case UCS2_CHAR('<'):
2310 case UCS2_CHAR('>'):
2311 case UCS2_CHAR('"'):
2318 /*******************************************************************
2319 A wrapper that handles case sensitivity and the special handling
2321 *******************************************************************/
2323 bool mask_match(const char *string, const char *pattern, bool is_case_sensitive)
2325 if (ISDOTDOT(string))
2330 return ms_fnmatch(pattern, string, Protocol <= PROTOCOL_LANMAN2, is_case_sensitive) == 0;
2333 /*******************************************************************
2334 A wrapper that handles case sensitivity and the special handling
2335 of the ".." name. Varient that is only called by old search code which requires
2336 pattern translation.
2337 *******************************************************************/
2339 bool mask_match_search(const char *string, const char *pattern, bool is_case_sensitive)
2341 if (ISDOTDOT(string))
2346 return ms_fnmatch(pattern, string, True, is_case_sensitive) == 0;
2349 /*******************************************************************
2350 A wrapper that handles a list of patters and calls mask_match()
2351 on each. Returns True if any of the patterns match.
2352 *******************************************************************/
2354 bool mask_match_list(const char *string, char **list, int listLen, bool is_case_sensitive)
2356 while (listLen-- > 0) {
2357 if (mask_match(string, *list++, is_case_sensitive))
2363 /*********************************************************
2364 Recursive routine that is called by unix_wild_match.
2365 *********************************************************/
2367 static bool unix_do_match(const char *regexp, const char *str)
2371 for( p = regexp; *p && *str; ) {
2382 * Look for a character matching
2383 * the one after the '*'.
2387 return true; /* Automatic match */
2390 while(*str && (*p != *str))
2394 * Patch from weidel@multichart.de. In the case of the regexp
2395 * '*XX*' we want to ensure there are at least 2 'X' characters
2396 * in the string after the '*' for a match to be made.
2403 * Eat all the characters that match, but count how many there were.
2406 while(*str && (*p == *str)) {
2412 * Now check that if the regexp had n identical characters that
2413 * matchcount had at least that many matches.
2416 while ( *(p+1) && (*(p+1) == *p)) {
2421 if ( matchcount <= 0 )
2425 str--; /* We've eaten the match char after the '*' */
2427 if(unix_do_match(p, str))
2449 if (!*p && str[0] == '.' && str[1] == 0)
2452 if (!*str && *p == '?') {
2458 if(!*str && (*p == '*' && p[1] == '\0'))
2464 /*******************************************************************
2465 Simple case insensitive interface to a UNIX wildcard matcher.
2466 Returns True if match, False if not.
2467 *******************************************************************/
2469 bool unix_wild_match(const char *pattern, const char *string)
2471 TALLOC_CTX *ctx = talloc_stackframe();
2477 p2 = talloc_strdup(ctx,pattern);
2478 s2 = talloc_strdup(ctx,string);
2486 /* Remove any *? and ** from the pattern as they are meaningless */
2487 for(p = p2; *p; p++) {
2488 while( *p == '*' && (p[1] == '?' ||p[1] == '*')) {
2489 memmove(&p[1], &p[2], strlen(&p[2])+1);
2493 if (strequal(p2,"*")) {
2498 ret = unix_do_match(p2, s2);
2503 /**********************************************************************
2504 Converts a name to a fully qualified domain name.
2505 Returns true if lookup succeeded, false if not (then fqdn is set to name)
2506 Note we deliberately use gethostbyname here, not getaddrinfo as we want
2507 to examine the h_aliases and I don't know how to do that with getaddrinfo.
2508 ***********************************************************************/
2510 bool name_to_fqdn(fstring fqdn, const char *name)
2513 struct hostent *hp = gethostbyname(name);
2515 if (!hp || !hp->h_name || !*hp->h_name) {
2516 DEBUG(10,("name_to_fqdn: lookup for %s failed.\n", name));
2517 fstrcpy(fqdn, name);
2521 /* Find out if the fqdn is returned as an alias
2522 * to cope with /etc/hosts files where the first
2523 * name is not the fqdn but the short name */
2524 if (hp->h_aliases && (! strchr_m(hp->h_name, '.'))) {
2526 for (i = 0; hp->h_aliases[i]; i++) {
2527 if (strchr_m(hp->h_aliases[i], '.')) {
2528 full = hp->h_aliases[i];
2533 if (full && (StrCaseCmp(full, "localhost.localdomain") == 0)) {
2534 DEBUG(1, ("WARNING: your /etc/hosts file may be broken!\n"));
2535 DEBUGADD(1, (" Specifing the machine hostname for address 127.0.0.1 may lead\n"));
2536 DEBUGADD(1, (" to Kerberos authentication problems as localhost.localdomain\n"));
2537 DEBUGADD(1, (" may end up being used instead of the real machine FQDN.\n"));
2544 DEBUG(10,("name_to_fqdn: lookup for %s -> %s.\n", name, full));
2545 fstrcpy(fqdn, full);
2549 /**********************************************************************
2550 Append a DATA_BLOB to a talloc'ed object
2551 ***********************************************************************/
2553 void *talloc_append_blob(TALLOC_CTX *mem_ctx, void *buf, DATA_BLOB blob)
2555 size_t old_size = 0;
2558 if (blob.length == 0) {
2563 old_size = talloc_get_size(buf);
2566 result = (char *)TALLOC_REALLOC(mem_ctx, buf, old_size + blob.length);
2567 if (result == NULL) {
2571 memcpy(result + old_size, blob.data, blob.length);
2575 uint32 map_share_mode_to_deny_mode(uint32 share_access, uint32 private_options)
2577 switch (share_access & ~FILE_SHARE_DELETE) {
2578 case FILE_SHARE_NONE:
2580 case FILE_SHARE_READ:
2582 case FILE_SHARE_WRITE:
2584 case FILE_SHARE_READ|FILE_SHARE_WRITE:
2587 if (private_options & NTCREATEX_OPTIONS_PRIVATE_DENY_DOS) {
2589 } else if (private_options & NTCREATEX_OPTIONS_PRIVATE_DENY_FCB) {
2596 pid_t procid_to_pid(const struct server_id *proc)
2601 static uint32 my_vnn = NONCLUSTER_VNN;
2603 void set_my_vnn(uint32 vnn)
2605 DEBUG(10, ("vnn pid %d = %u\n", (int)sys_getpid(), (unsigned int)vnn));
2609 uint32 get_my_vnn(void)
2614 static uint64_t my_unique_id = 0;
2616 void set_my_unique_id(uint64_t unique_id)
2618 my_unique_id = unique_id;
2621 struct server_id pid_to_procid(pid_t pid)
2623 struct server_id result;
2625 result.unique_id = my_unique_id;
2626 #ifdef CLUSTER_SUPPORT
2627 result.vnn = my_vnn;
2632 struct server_id procid_self(void)
2634 return pid_to_procid(sys_getpid());
2637 bool procid_equal(const struct server_id *p1, const struct server_id *p2)
2639 if (p1->pid != p2->pid)
2641 #ifdef CLUSTER_SUPPORT
2642 if (p1->vnn != p2->vnn)
2648 bool cluster_id_equal(const struct server_id *id1,
2649 const struct server_id *id2)
2651 return procid_equal(id1, id2);
2654 bool procid_is_me(const struct server_id *pid)
2656 if (pid->pid != sys_getpid())
2658 #ifdef CLUSTER_SUPPORT
2659 if (pid->vnn != my_vnn)
2665 struct server_id interpret_pid(const char *pid_string)
2667 struct server_id result;
2669 #ifdef CLUSTER_SUPPORT
2671 if (sscanf(pid_string, "%u:%d", &vnn, &pid) == 2) {
2675 else if (sscanf(pid_string, "%d", &pid) == 1) {
2676 result.vnn = get_my_vnn();
2680 result.vnn = NONCLUSTER_VNN;
2684 if (sscanf(pid_string, "%d", &pid) != 1) {
2690 /* Assigning to result.pid may have overflowed
2691 Map negative pid to -1: i.e. error */
2692 if (result.pid < 0) {
2695 result.unique_id = 0;
2699 char *procid_str(TALLOC_CTX *mem_ctx, const struct server_id *pid)
2701 #ifdef CLUSTER_SUPPORT
2702 if (pid->vnn == NONCLUSTER_VNN) {
2703 return talloc_asprintf(mem_ctx,
2708 return talloc_asprintf(mem_ctx,
2714 return talloc_asprintf(mem_ctx,
2720 char *procid_str_static(const struct server_id *pid)
2722 return procid_str(talloc_tos(), pid);
2725 bool procid_valid(const struct server_id *pid)
2727 return (pid->pid != -1);
2730 bool procid_is_local(const struct server_id *pid)
2732 #ifdef CLUSTER_SUPPORT
2733 return pid->vnn == my_vnn;
2739 int this_is_smp(void)
2741 #if defined(HAVE_SYSCONF)
2743 #if defined(SYSCONF_SC_NPROC_ONLN)
2744 return (sysconf(_SC_NPROC_ONLN) > 1) ? 1 : 0;
2745 #elif defined(SYSCONF_SC_NPROCESSORS_ONLN)
2746 return (sysconf(_SC_NPROCESSORS_ONLN) > 1) ? 1 : 0;
2756 /****************************************************************
2757 Check if offset/length fit into bufsize. Should probably be
2758 merged with is_offset_safe, but this would require a rewrite
2759 of lanman.c. Later :-)
2760 ****************************************************************/
2762 bool trans_oob(uint32_t bufsize, uint32_t offset, uint32_t length)
2764 if ((offset + length < offset) || (offset + length < length)) {
2768 if ((offset > bufsize) || (offset + length > bufsize)) {
2775 /****************************************************************
2776 Check if an offset into a buffer is safe.
2777 If this returns True it's safe to indirect into the byte at
2779 ****************************************************************/
2781 bool is_offset_safe(const char *buf_base, size_t buf_len, char *ptr, size_t off)
2783 const char *end_base = buf_base + buf_len;
2784 char *end_ptr = ptr + off;
2786 if (!buf_base || !ptr) {
2790 if (end_base < buf_base || end_ptr < ptr) {
2791 return False; /* wrap. */
2794 if (end_ptr < end_base) {
2800 /****************************************************************
2801 Return a safe pointer into a buffer, or NULL.
2802 ****************************************************************/
2804 char *get_safe_ptr(const char *buf_base, size_t buf_len, char *ptr, size_t off)
2806 return is_offset_safe(buf_base, buf_len, ptr, off) ?
2810 /****************************************************************
2811 Return a safe pointer into a string within a buffer, or NULL.
2812 ****************************************************************/
2814 char *get_safe_str_ptr(const char *buf_base, size_t buf_len, char *ptr, size_t off)
2816 if (!is_offset_safe(buf_base, buf_len, ptr, off)) {
2819 /* Check if a valid string exists at this offset. */
2820 if (skip_string(buf_base,buf_len, ptr + off) == NULL) {
2826 /****************************************************************
2827 Return an SVAL at a pointer, or failval if beyond the end.
2828 ****************************************************************/
2830 int get_safe_SVAL(const char *buf_base, size_t buf_len, char *ptr, size_t off, int failval)
2833 * Note we use off+1 here, not off+2 as SVAL accesses ptr[0] and ptr[1],
2836 if (!is_offset_safe(buf_base, buf_len, ptr, off+1)) {
2839 return SVAL(ptr,off);
2842 /****************************************************************
2843 Return an IVAL at a pointer, or failval if beyond the end.
2844 ****************************************************************/
2846 int get_safe_IVAL(const char *buf_base, size_t buf_len, char *ptr, size_t off, int failval)
2849 * Note we use off+3 here, not off+4 as IVAL accesses
2850 * ptr[0] ptr[1] ptr[2] ptr[3] NOT ptr[4].
2852 if (!is_offset_safe(buf_base, buf_len, ptr, off+3)) {
2855 return IVAL(ptr,off);
2858 /****************************************************************
2859 Split DOM\user into DOM and user. Do not mix with winbind variants of that
2860 call (they take care of winbind separator and other winbind specific settings).
2861 ****************************************************************/
2863 void split_domain_user(TALLOC_CTX *mem_ctx,
2864 const char *full_name,
2868 const char *p = NULL;
2870 p = strchr_m(full_name, '\\');
2873 *domain = talloc_strndup(mem_ctx, full_name,
2874 PTR_DIFF(p, full_name));
2875 *user = talloc_strdup(mem_ctx, p+1);
2877 *domain = talloc_strdup(mem_ctx, "");
2878 *user = talloc_strdup(mem_ctx, full_name);
2884 Disable these now we have checked all code paths and ensured
2885 NULL returns on zero request. JRA.
2887 /****************************************************************
2888 talloc wrapper functions that guarentee a null pointer return
2890 ****************************************************************/
2892 #ifndef MAX_TALLOC_SIZE
2893 #define MAX_TALLOC_SIZE 0x10000000
2897 * talloc and zero memory.
2898 * - returns NULL if size is zero.
2901 void *_talloc_zero_zeronull(const void *ctx, size_t size, const char *name)
2909 p = talloc_named_const(ctx, size, name);
2912 memset(p, '\0', size);
2919 * memdup with a talloc.
2920 * - returns NULL if size is zero.
2923 void *_talloc_memdup_zeronull(const void *t, const void *p, size_t size, const char *name)
2931 newp = talloc_named_const(t, size, name);
2933 memcpy(newp, p, size);
2940 * alloc an array, checking for integer overflow in the array size.
2941 * - returns NULL if count or el_size are zero.
2944 void *_talloc_array_zeronull(const void *ctx, size_t el_size, unsigned count, const char *name)
2946 if (count >= MAX_TALLOC_SIZE/el_size) {
2950 if (el_size == 0 || count == 0) {
2954 return talloc_named_const(ctx, el_size * count, name);
2958 * alloc an zero array, checking for integer overflow in the array size
2959 * - returns NULL if count or el_size are zero.
2962 void *_talloc_zero_array_zeronull(const void *ctx, size_t el_size, unsigned count, const char *name)
2964 if (count >= MAX_TALLOC_SIZE/el_size) {
2968 if (el_size == 0 || count == 0) {
2972 return _talloc_zero(ctx, el_size * count, name);
2976 * Talloc wrapper that returns NULL if size == 0.
2978 void *talloc_zeronull(const void *context, size_t size, const char *name)
2983 return talloc_named_const(context, size, name);
2987 bool is_valid_policy_hnd(const struct policy_handle *hnd)
2989 struct policy_handle tmp;
2991 return (memcmp(&tmp, hnd, sizeof(tmp)) != 0);
2994 bool policy_hnd_equal(const struct policy_handle *hnd1,
2995 const struct policy_handle *hnd2)
2997 if (!hnd1 || !hnd2) {
3001 return (memcmp(hnd1, hnd2, sizeof(*hnd1)) == 0);
3004 /****************************************************************
3005 strip off leading '\\' from a hostname
3006 ****************************************************************/
3008 const char *strip_hostname(const char *s)
3014 if (strlen_m(s) < 3) {
3018 if (s[0] == '\\') s++;
3019 if (s[0] == '\\') s++;
3024 bool tevent_req_poll_ntstatus(struct tevent_req *req,
3025 struct tevent_context *ev,
3028 bool ret = tevent_req_poll(req, ev);
3030 *status = map_nt_error_from_unix(errno);