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 "system/passwd.h"
26 #include "system/filesys.h"
27 #include "ctdbd_conn.h"
28 #include "../lib/util/util_pw.h"
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 /*******************************************************************
247 Check if a file exists - call vfs_file_exist for samba files.
248 ********************************************************************/
250 bool file_exist_stat(const char *fname,SMB_STRUCT_STAT *sbuf,
251 bool fake_dir_create_times)
257 if (sys_stat(fname, sbuf, fake_dir_create_times) != 0)
260 return((S_ISREG(sbuf->st_ex_mode)) || (S_ISFIFO(sbuf->st_ex_mode)));
263 /*******************************************************************
264 Check if a unix domain socket exists - call vfs_file_exist for samba files.
265 ********************************************************************/
267 bool socket_exist(const char *fname)
270 if (sys_stat(fname, &st, false) != 0)
273 return S_ISSOCK(st.st_ex_mode);
276 /*******************************************************************
277 Returns the size in bytes of the named given the stat struct.
278 ********************************************************************/
280 uint64_t get_file_size_stat(const SMB_STRUCT_STAT *sbuf)
282 return sbuf->st_ex_size;
285 /*******************************************************************
286 Returns the size in bytes of the named file.
287 ********************************************************************/
289 SMB_OFF_T get_file_size(char *file_name)
293 if (sys_stat(file_name, &buf, false) != 0)
294 return (SMB_OFF_T)-1;
295 return get_file_size_stat(&buf);
298 /*******************************************************************
299 Return a string representing an attribute for a file.
300 ********************************************************************/
302 char *attrib_string(uint16 mode)
308 if (mode & aVOLID) fstrcat(attrstr,"V");
309 if (mode & aDIR) fstrcat(attrstr,"D");
310 if (mode & aARCH) fstrcat(attrstr,"A");
311 if (mode & aHIDDEN) fstrcat(attrstr,"H");
312 if (mode & aSYSTEM) fstrcat(attrstr,"S");
313 if (mode & aRONLY) fstrcat(attrstr,"R");
315 return talloc_strdup(talloc_tos(), attrstr);
318 /*******************************************************************
319 Show a smb message structure.
320 ********************************************************************/
322 void show_msg(char *buf)
330 DEBUG(5,("size=%d\nsmb_com=0x%x\nsmb_rcls=%d\nsmb_reh=%d\nsmb_err=%d\nsmb_flg=%d\nsmb_flg2=%d\n",
332 (int)CVAL(buf,smb_com),
333 (int)CVAL(buf,smb_rcls),
334 (int)CVAL(buf,smb_reh),
335 (int)SVAL(buf,smb_err),
336 (int)CVAL(buf,smb_flg),
337 (int)SVAL(buf,smb_flg2)));
338 DEBUGADD(5,("smb_tid=%d\nsmb_pid=%d\nsmb_uid=%d\nsmb_mid=%d\n",
339 (int)SVAL(buf,smb_tid),
340 (int)SVAL(buf,smb_pid),
341 (int)SVAL(buf,smb_uid),
342 (int)SVAL(buf,smb_mid)));
343 DEBUGADD(5,("smt_wct=%d\n",(int)CVAL(buf,smb_wct)));
345 for (i=0;i<(int)CVAL(buf,smb_wct);i++)
346 DEBUGADD(5,("smb_vwv[%2d]=%5d (0x%X)\n",i,
347 SVAL(buf,smb_vwv+2*i),SVAL(buf,smb_vwv+2*i)));
349 bcc = (int)SVAL(buf,smb_vwv+2*(CVAL(buf,smb_wct)));
351 DEBUGADD(5,("smb_bcc=%d\n",bcc));
359 dump_data(10, (uint8 *)smb_buf(buf), bcc);
362 /*******************************************************************
363 Set the length and marker of an encrypted smb packet.
364 ********************************************************************/
366 void smb_set_enclen(char *buf,int len,uint16 enc_ctx_num)
368 _smb_setlen(buf,len);
372 SSVAL(buf,6,enc_ctx_num);
375 /*******************************************************************
376 Set the length and marker of an smb packet.
377 ********************************************************************/
379 void smb_setlen(char *buf,int len)
381 _smb_setlen(buf,len);
389 /*******************************************************************
390 Setup only the byte count for a smb message.
391 ********************************************************************/
393 int set_message_bcc(char *buf,int num_bytes)
395 int num_words = CVAL(buf,smb_wct);
396 SSVAL(buf,smb_vwv + num_words*SIZEOFWORD,num_bytes);
397 _smb_setlen(buf,smb_size + num_words*2 + num_bytes - 4);
398 return (smb_size + num_words*2 + num_bytes);
401 /*******************************************************************
402 Add a data blob to the end of a smb_buf, adjusting bcc and smb_len.
403 Return the bytes added
404 ********************************************************************/
406 ssize_t message_push_blob(uint8 **outbuf, DATA_BLOB blob)
408 size_t newlen = smb_len(*outbuf) + 4 + blob.length;
411 if (!(tmp = TALLOC_REALLOC_ARRAY(NULL, *outbuf, uint8, newlen))) {
412 DEBUG(0, ("talloc failed\n"));
417 memcpy(tmp + smb_len(tmp) + 4, blob.data, blob.length);
418 set_message_bcc((char *)tmp, smb_buflen(tmp) + blob.length);
422 /*******************************************************************
423 Reduce a file name, removing .. elements.
424 ********************************************************************/
426 static char *dos_clean_name(TALLOC_CTX *ctx, const char *s)
431 DEBUG(3,("dos_clean_name [%s]\n",s));
433 /* remove any double slashes */
434 str = talloc_all_string_sub(ctx, s, "\\\\", "\\");
439 /* Remove leading .\\ characters */
440 if(strncmp(str, ".\\", 2) == 0) {
441 trim_string(str, ".\\", NULL);
443 str = talloc_strdup(ctx, ".\\");
450 while ((p = strstr_m(str,"\\..\\")) != NULL) {
456 if ((p=strrchr_m(str,'\\')) != NULL) {
461 str = talloc_asprintf(ctx,
470 trim_string(str,NULL,"\\..");
471 return talloc_all_string_sub(ctx, str, "\\.\\", "\\");
474 /*******************************************************************
475 Reduce a file name, removing .. elements.
476 ********************************************************************/
478 char *unix_clean_name(TALLOC_CTX *ctx, const char *s)
483 DEBUG(3,("unix_clean_name [%s]\n",s));
485 /* remove any double slashes */
486 str = talloc_all_string_sub(ctx, s, "//","/");
491 /* Remove leading ./ characters */
492 if(strncmp(str, "./", 2) == 0) {
493 trim_string(str, "./", NULL);
495 str = talloc_strdup(ctx, "./");
502 while ((p = strstr_m(str,"/../")) != NULL) {
508 if ((p=strrchr_m(str,'/')) != NULL) {
513 str = talloc_asprintf(ctx,
522 trim_string(str,NULL,"/..");
523 return talloc_all_string_sub(ctx, str, "/./", "/");
526 char *clean_name(TALLOC_CTX *ctx, const char *s)
528 char *str = dos_clean_name(ctx, s);
532 return unix_clean_name(ctx, str);
535 /*******************************************************************
536 Write data into an fd at a given offset. Ignore seek errors.
537 ********************************************************************/
539 ssize_t write_data_at_offset(int fd, const char *buffer, size_t N, SMB_OFF_T pos)
544 if (pos == (SMB_OFF_T)-1) {
545 return write_data(fd, buffer, N);
547 #if defined(HAVE_PWRITE) || defined(HAVE_PRWITE64)
549 ret = sys_pwrite(fd,buffer + total,N - total, pos);
550 if (ret == -1 && errno == ESPIPE) {
551 return write_data(fd, buffer + total,N - total);
554 DEBUG(0,("write_data_at_offset: write failure. Error = %s\n", strerror(errno) ));
563 return (ssize_t)total;
565 /* Use lseek and write_data. */
566 if (sys_lseek(fd, pos, SEEK_SET) == -1) {
567 if (errno != ESPIPE) {
571 return write_data(fd, buffer, N);
576 NTSTATUS reinit_after_fork(struct messaging_context *msg_ctx,
577 struct event_context *ev_ctx,
579 bool parent_longlived)
581 NTSTATUS status = NT_STATUS_OK;
583 /* Reset the state of the random
584 * number generation system, so
585 * children do not get the same random
586 * numbers as each other */
587 set_need_random_reseed();
589 /* tdb needs special fork handling */
590 if (tdb_reopen_all(parent_longlived ? 1 : 0) == -1) {
591 DEBUG(0,("tdb_reopen_all failed.\n"));
592 status = NT_STATUS_OPEN_FAILED;
596 if (ev_ctx && tevent_re_initialise(ev_ctx) != 0) {
597 smb_panic(__location__ ": Failed to re-initialise event context");
602 * For clustering, we need to re-init our ctdbd connection after the
605 status = messaging_reinit(msg_ctx, id);
606 if (!NT_STATUS_IS_OK(status)) {
607 DEBUG(0,("messaging_reinit() failed: %s\n",
615 #if defined(PARANOID_MALLOC_CHECKER)
617 /****************************************************************************
618 Internal malloc wrapper. Externally visible.
619 ****************************************************************************/
621 void *malloc_(size_t size)
628 #define malloc(s) __ERROR_DONT_USE_MALLOC_DIRECTLY
631 /****************************************************************************
632 Internal calloc wrapper. Not externally visible.
633 ****************************************************************************/
635 static void *calloc_(size_t count, size_t size)
637 if (size == 0 || count == 0) {
641 return calloc(count, size);
642 #define calloc(n,s) __ERROR_DONT_USE_CALLOC_DIRECTLY
645 /****************************************************************************
646 Internal realloc wrapper. Not externally visible.
647 ****************************************************************************/
649 static void *realloc_(void *ptr, size_t size)
652 return realloc(ptr, size);
653 #define realloc(p,s) __ERROR_DONT_USE_RELLOC_DIRECTLY
656 #endif /* PARANOID_MALLOC_CHECKER */
658 /****************************************************************************
660 ****************************************************************************/
662 void *memalign_array(size_t el_size, size_t align, unsigned int count)
664 if (count >= MAX_ALLOC_SIZE/el_size) {
668 return sys_memalign(align, el_size*count);
671 /****************************************************************************
673 ****************************************************************************/
675 void *calloc_array(size_t size, size_t nmemb)
677 if (nmemb >= MAX_ALLOC_SIZE/size) {
680 if (size == 0 || nmemb == 0) {
683 #if defined(PARANOID_MALLOC_CHECKER)
684 return calloc_(nmemb, size);
686 return calloc(nmemb, size);
690 /****************************************************************************
691 Expand a pointer to be a particular size.
692 Note that this version of Realloc has an extra parameter that decides
693 whether to free the passed in storage on allocation failure or if the
696 This is designed for use in the typical idiom of :
698 p = SMB_REALLOC(p, size)
703 and not to have to keep track of the old 'p' contents to free later, nor
704 to worry if the size parameter was zero. In the case where NULL is returned
705 we guarentee that p has been freed.
707 If free later semantics are desired, then pass 'free_old_on_error' as False which
708 guarentees that the old contents are not freed on error, even if size == 0. To use
711 tmp = SMB_REALLOC_KEEP_OLD_ON_ERROR(p, size);
719 Changes were instigated by Coverity error checking. JRA.
720 ****************************************************************************/
722 void *Realloc(void *p, size_t size, bool free_old_on_error)
727 if (free_old_on_error) {
730 DEBUG(2,("Realloc asked for 0 bytes\n"));
734 #if defined(PARANOID_MALLOC_CHECKER)
736 ret = (void *)malloc_(size);
738 ret = (void *)realloc_(p,size);
742 ret = (void *)malloc(size);
744 ret = (void *)realloc(p,size);
749 if (free_old_on_error && p) {
752 DEBUG(0,("Memory allocation error: failed to expand to %d bytes\n",(int)size));
758 /****************************************************************************
759 (Hopefully) efficient array append.
760 ****************************************************************************/
762 void add_to_large_array(TALLOC_CTX *mem_ctx, size_t element_size,
763 void *element, void *_array, uint32 *num_elements,
766 void **array = (void **)_array;
768 if (*array_size < 0) {
772 if (*array == NULL) {
773 if (*array_size == 0) {
777 if (*array_size >= MAX_ALLOC_SIZE/element_size) {
781 *array = TALLOC(mem_ctx, element_size * (*array_size));
782 if (*array == NULL) {
787 if (*num_elements == *array_size) {
790 if (*array_size >= MAX_ALLOC_SIZE/element_size) {
794 *array = TALLOC_REALLOC(mem_ctx, *array,
795 element_size * (*array_size));
797 if (*array == NULL) {
802 memcpy((char *)(*array) + element_size*(*num_elements),
803 element, element_size);
813 /****************************************************************************
814 Get my own domain name, or "" if we have none.
815 ****************************************************************************/
817 char *get_mydnsdomname(TALLOC_CTX *ctx)
822 domname = get_mydnsfullname();
827 p = strchr_m(domname, '.');
830 return talloc_strdup(ctx, p);
832 return talloc_strdup(ctx, "");
836 /****************************************************************************
837 Interpret a protocol description string, with a default.
838 ****************************************************************************/
840 int interpret_protocol(const char *str,int def)
842 if (strequal(str,"NT1"))
843 return(PROTOCOL_NT1);
844 if (strequal(str,"LANMAN2"))
845 return(PROTOCOL_LANMAN2);
846 if (strequal(str,"LANMAN1"))
847 return(PROTOCOL_LANMAN1);
848 if (strequal(str,"CORE"))
849 return(PROTOCOL_CORE);
850 if (strequal(str,"COREPLUS"))
851 return(PROTOCOL_COREPLUS);
852 if (strequal(str,"CORE+"))
853 return(PROTOCOL_COREPLUS);
855 DEBUG(0,("Unrecognised protocol level %s\n",str));
861 #if (defined(HAVE_NETGROUP) && defined(WITH_AUTOMOUNT))
862 /******************************************************************
863 Remove any mount options such as -rsize=2048,wsize=2048 etc.
864 Based on a fix from <Thomas.Hepper@icem.de>.
865 Returns a malloc'ed string.
866 *******************************************************************/
868 static char *strip_mount_options(TALLOC_CTX *ctx, const char *str)
872 while(*p && !isspace(*p))
874 while(*p && isspace(*p))
877 return talloc_strdup(ctx, p);
883 /*******************************************************************
884 Patch from jkf@soton.ac.uk
885 Split Luke's automount_server into YP lookup and string splitter
886 so can easily implement automount_path().
887 Returns a malloc'ed string.
888 *******************************************************************/
890 #ifdef WITH_NISPLUS_HOME
891 char *automount_lookup(TALLOC_CTX *ctx, const char *user_name)
895 char *nis_map = (char *)lp_nis_home_map_name();
897 char buffer[NIS_MAXATTRVAL + 1];
902 snprintf(buffer, sizeof(buffer), "[key=%s],%s", user_name, nis_map);
903 DEBUG(5, ("NIS+ querystring: %s\n", buffer));
905 if (result = nis_list(buffer, FOLLOW_PATH|EXPAND_NAME|HARD_LOOKUP, NULL, NULL)) {
906 if (result->status != NIS_SUCCESS) {
907 DEBUG(3, ("NIS+ query failed: %s\n", nis_sperrno(result->status)));
909 object = result->objects.objects_val;
910 if (object->zo_data.zo_type == ENTRY_OBJ) {
911 entry = &object->zo_data.objdata_u.en_data;
912 DEBUG(5, ("NIS+ entry type: %s\n", entry->en_type));
913 DEBUG(3, ("NIS+ result: %s\n", entry->en_cols.en_cols_val[1].ec_value.ec_value_val));
915 value = talloc_strdup(ctx,
916 entry->en_cols.en_cols_val[1].ec_value.ec_value_val);
918 nis_freeresult(result);
921 value = talloc_string_sub(ctx,
928 nis_freeresult(result);
931 value = strip_mount_options(ctx, value);
932 DEBUG(4, ("NIS+ Lookup: %s resulted in %s\n",
937 #else /* WITH_NISPLUS_HOME */
939 char *automount_lookup(TALLOC_CTX *ctx, const char *user_name)
943 int nis_error; /* returned by yp all functions */
944 char *nis_result; /* yp_match inits this */
945 int nis_result_len; /* and set this */
946 char *nis_domain; /* yp_get_default_domain inits this */
947 char *nis_map = (char *)lp_nis_home_map_name();
949 if ((nis_error = yp_get_default_domain(&nis_domain)) != 0) {
950 DEBUG(3, ("YP Error: %s\n", yperr_string(nis_error)));
954 DEBUG(5, ("NIS Domain: %s\n", nis_domain));
956 if ((nis_error = yp_match(nis_domain, nis_map, user_name,
957 strlen(user_name), &nis_result,
958 &nis_result_len)) == 0) {
959 if (nis_result_len > 0 && nis_result[nis_result_len] == '\n') {
960 nis_result[nis_result_len] = '\0';
962 value = talloc_strdup(ctx, nis_result);
966 value = strip_mount_options(ctx, value);
967 } else if(nis_error == YPERR_KEY) {
968 DEBUG(3, ("YP Key not found: while looking up \"%s\" in map \"%s\"\n",
969 user_name, nis_map));
970 DEBUG(3, ("using defaults for server and home directory\n"));
972 DEBUG(3, ("YP Error: \"%s\" while looking up \"%s\" in map \"%s\"\n",
973 yperr_string(nis_error), user_name, nis_map));
977 DEBUG(4, ("YP Lookup: %s resulted in %s\n", user_name, value));
981 #endif /* WITH_NISPLUS_HOME */
984 /****************************************************************************
985 Check if a process exists. Does this work on all unixes?
986 ****************************************************************************/
988 bool process_exists(const struct server_id pid)
990 if (procid_is_me(&pid)) {
994 if (procid_is_local(&pid)) {
995 return (kill(pid.pid,0) == 0 || errno != ESRCH);
998 #ifdef CLUSTER_SUPPORT
999 return ctdbd_process_exists(messaging_ctdbd_connection(),
1006 /*******************************************************************
1007 Convert a uid into a user name.
1008 ********************************************************************/
1010 const char *uidtoname(uid_t uid)
1012 TALLOC_CTX *ctx = talloc_tos();
1014 struct passwd *pass = NULL;
1016 pass = getpwuid_alloc(ctx,uid);
1018 name = talloc_strdup(ctx,pass->pw_name);
1021 name = talloc_asprintf(ctx,
1028 /*******************************************************************
1029 Convert a gid into a group name.
1030 ********************************************************************/
1032 char *gidtoname(gid_t gid)
1036 grp = getgrgid(gid);
1038 return talloc_strdup(talloc_tos(), grp->gr_name);
1041 return talloc_asprintf(talloc_tos(),
1047 /*******************************************************************
1048 Convert a user name into a uid.
1049 ********************************************************************/
1051 uid_t nametouid(const char *name)
1053 struct passwd *pass;
1057 pass = Get_Pwnam_alloc(talloc_tos(), name);
1064 u = (uid_t)strtol(name, &p, 0);
1065 if ((p != name) && (*p == '\0'))
1071 /*******************************************************************
1072 Convert a name to a gid_t if possible. Return -1 if not a group.
1073 ********************************************************************/
1075 gid_t nametogid(const char *name)
1081 g = (gid_t)strtol(name, &p, 0);
1082 if ((p != name) && (*p == '\0'))
1085 grp = sys_getgrnam(name);
1087 return(grp->gr_gid);
1091 /*******************************************************************
1092 Something really nasty happened - panic !
1093 ********************************************************************/
1095 void smb_panic_s3(const char *why)
1100 DEBUG(0,("PANIC (pid %llu): %s\n",
1101 (unsigned long long)sys_getpid(), why));
1104 cmd = lp_panic_action();
1106 DEBUG(0, ("smb_panic(): calling panic action [%s]\n", cmd));
1107 result = system(cmd);
1110 DEBUG(0, ("smb_panic(): fork failed in panic action: %s\n",
1113 DEBUG(0, ("smb_panic(): action returned status %d\n",
1114 WEXITSTATUS(result)));
1120 /*******************************************************************
1121 Print a backtrace of the stack to the debug log. This function
1122 DELIBERATELY LEAKS MEMORY. The expectation is that you should
1123 exit shortly after calling it.
1124 ********************************************************************/
1126 #ifdef HAVE_LIBUNWIND_H
1127 #include <libunwind.h>
1130 #ifdef HAVE_EXECINFO_H
1131 #include <execinfo.h>
1134 #ifdef HAVE_LIBEXC_H
1138 void log_stack_trace(void)
1140 #ifdef HAVE_LIBUNWIND
1141 /* Try to use libunwind before any other technique since on ia64
1142 * libunwind correctly walks the stack in more circumstances than
1145 unw_cursor_t cursor;
1150 unw_word_t ip, sp, off;
1152 procname[sizeof(procname) - 1] = '\0';
1154 if (unw_getcontext(&uc) != 0) {
1155 goto libunwind_failed;
1158 if (unw_init_local(&cursor, &uc) != 0) {
1159 goto libunwind_failed;
1162 DEBUG(0, ("BACKTRACE:\n"));
1166 unw_get_reg(&cursor, UNW_REG_IP, &ip);
1167 unw_get_reg(&cursor, UNW_REG_SP, &sp);
1169 switch (unw_get_proc_name(&cursor,
1170 procname, sizeof(procname) - 1, &off) ) {
1174 /* Name truncated. */
1175 DEBUGADD(0, (" #%u %s + %#llx [ip=%#llx] [sp=%#llx]\n",
1176 i, procname, (long long)off,
1177 (long long)ip, (long long) sp));
1180 /* case -UNW_ENOINFO: */
1181 /* case -UNW_EUNSPEC: */
1182 /* No symbol name found. */
1183 DEBUGADD(0, (" #%u %s [ip=%#llx] [sp=%#llx]\n",
1184 i, "<unknown symbol>",
1185 (long long)ip, (long long) sp));
1188 } while (unw_step(&cursor) > 0);
1193 DEBUG(0, ("unable to produce a stack trace with libunwind\n"));
1195 #elif HAVE_BACKTRACE_SYMBOLS
1196 void *backtrace_stack[BACKTRACE_STACK_SIZE];
1197 size_t backtrace_size;
1198 char **backtrace_strings;
1200 /* get the backtrace (stack frames) */
1201 backtrace_size = backtrace(backtrace_stack,BACKTRACE_STACK_SIZE);
1202 backtrace_strings = backtrace_symbols(backtrace_stack, backtrace_size);
1204 DEBUG(0, ("BACKTRACE: %lu stack frames:\n",
1205 (unsigned long)backtrace_size));
1207 if (backtrace_strings) {
1210 for (i = 0; i < backtrace_size; i++)
1211 DEBUGADD(0, (" #%u %s\n", i, backtrace_strings[i]));
1213 /* Leak the backtrace_strings, rather than risk what free() might do */
1218 /* The IRIX libexc library provides an API for unwinding the stack. See
1219 * libexc(3) for details. Apparantly trace_back_stack leaks memory, but
1220 * since we are about to abort anyway, it hardly matters.
1223 #define NAMESIZE 32 /* Arbitrary */
1225 __uint64_t addrs[BACKTRACE_STACK_SIZE];
1226 char * names[BACKTRACE_STACK_SIZE];
1227 char namebuf[BACKTRACE_STACK_SIZE * NAMESIZE];
1234 ZERO_ARRAY(namebuf);
1236 /* We need to be root so we can open our /proc entry to walk
1237 * our stack. It also helps when we want to dump core.
1241 for (i = 0; i < BACKTRACE_STACK_SIZE; i++) {
1242 names[i] = namebuf + (i * NAMESIZE);
1245 levels = trace_back_stack(0, addrs, names,
1246 BACKTRACE_STACK_SIZE, NAMESIZE - 1);
1248 DEBUG(0, ("BACKTRACE: %d stack frames:\n", levels));
1249 for (i = 0; i < levels; i++) {
1250 DEBUGADD(0, (" #%d 0x%llx %s\n", i, addrs[i], names[i]));
1255 DEBUG(0, ("unable to produce a stack trace on this platform\n"));
1259 /*******************************************************************
1260 A readdir wrapper which just returns the file name.
1261 ********************************************************************/
1263 const char *readdirname(SMB_STRUCT_DIR *p)
1265 SMB_STRUCT_DIRENT *ptr;
1271 ptr = (SMB_STRUCT_DIRENT *)sys_readdir(p);
1275 dname = ptr->d_name;
1282 #ifdef HAVE_BROKEN_READDIR_NAME
1283 /* using /usr/ucb/cc is BAD */
1287 return talloc_strdup(talloc_tos(), dname);
1290 /*******************************************************************
1291 Utility function used to decide if the last component
1292 of a path matches a (possibly wildcarded) entry in a namelist.
1293 ********************************************************************/
1295 bool is_in_path(const char *name, name_compare_entry *namelist, bool case_sensitive)
1297 const char *last_component;
1299 /* if we have no list it's obviously not in the path */
1300 if((namelist == NULL ) || ((namelist != NULL) && (namelist[0].name == NULL))) {
1304 DEBUG(8, ("is_in_path: %s\n", name));
1306 /* Get the last component of the unix name. */
1307 last_component = strrchr_m(name, '/');
1308 if (!last_component) {
1309 last_component = name;
1311 last_component++; /* Go past '/' */
1314 for(; namelist->name != NULL; namelist++) {
1315 if(namelist->is_wild) {
1316 if (mask_match(last_component, namelist->name, case_sensitive)) {
1317 DEBUG(8,("is_in_path: mask match succeeded\n"));
1321 if((case_sensitive && (strcmp(last_component, namelist->name) == 0))||
1322 (!case_sensitive && (StrCaseCmp(last_component, namelist->name) == 0))) {
1323 DEBUG(8,("is_in_path: match succeeded\n"));
1328 DEBUG(8,("is_in_path: match not found\n"));
1332 /*******************************************************************
1333 Strip a '/' separated list into an array of
1334 name_compare_enties structures suitable for
1335 passing to is_in_path(). We do this for
1336 speed so we can pre-parse all the names in the list
1337 and don't do it for each call to is_in_path().
1338 namelist is modified here and is assumed to be
1339 a copy owned by the caller.
1340 We also check if the entry contains a wildcard to
1341 remove a potentially expensive call to mask_match
1343 ********************************************************************/
1345 void set_namearray(name_compare_entry **ppname_array, const char *namelist)
1348 char *nameptr = (char *)namelist;
1349 int num_entries = 0;
1352 (*ppname_array) = NULL;
1354 if((nameptr == NULL ) || ((nameptr != NULL) && (*nameptr == '\0')))
1357 /* We need to make two passes over the string. The
1358 first to count the number of elements, the second
1363 if ( *nameptr == '/' ) {
1364 /* cope with multiple (useless) /s) */
1368 /* anything left? */
1369 if ( *nameptr == '\0' )
1372 /* find the next '/' or consume remaining */
1373 name_end = strchr_m(nameptr, '/');
1374 if (name_end == NULL)
1375 name_end = (char *)nameptr + strlen(nameptr);
1377 /* next segment please */
1378 nameptr = name_end + 1;
1382 if(num_entries == 0)
1385 if(( (*ppname_array) = SMB_MALLOC_ARRAY(name_compare_entry, num_entries + 1)) == NULL) {
1386 DEBUG(0,("set_namearray: malloc fail\n"));
1390 /* Now copy out the names */
1391 nameptr = (char *)namelist;
1394 if ( *nameptr == '/' ) {
1395 /* cope with multiple (useless) /s) */
1399 /* anything left? */
1400 if ( *nameptr == '\0' )
1403 /* find the next '/' or consume remaining */
1404 name_end = strchr_m(nameptr, '/');
1408 name_end = nameptr + strlen(nameptr);
1410 (*ppname_array)[i].is_wild = ms_has_wild(nameptr);
1411 if(((*ppname_array)[i].name = SMB_STRDUP(nameptr)) == NULL) {
1412 DEBUG(0,("set_namearray: malloc fail (1)\n"));
1416 /* next segment please */
1417 nameptr = name_end + 1;
1421 (*ppname_array)[i].name = NULL;
1426 /****************************************************************************
1427 Routine to free a namearray.
1428 ****************************************************************************/
1430 void free_namearray(name_compare_entry *name_array)
1434 if(name_array == NULL)
1437 for(i=0; name_array[i].name!=NULL; i++)
1438 SAFE_FREE(name_array[i].name);
1439 SAFE_FREE(name_array);
1443 #define DBGC_CLASS DBGC_LOCKING
1445 /****************************************************************************
1446 Simple routine to query existing file locks. Cruft in NFS and 64->32 bit mapping
1447 is dealt with in posix.c
1448 Returns True if we have information regarding this lock region (and returns
1449 F_UNLCK in *ptype if the region is unlocked). False if the call failed.
1450 ****************************************************************************/
1452 bool fcntl_getlock(int fd, SMB_OFF_T *poffset, SMB_OFF_T *pcount, int *ptype, pid_t *ppid)
1454 SMB_STRUCT_FLOCK lock;
1457 DEBUG(8,("fcntl_getlock fd=%d offset=%.0f count=%.0f type=%d\n",
1458 fd,(double)*poffset,(double)*pcount,*ptype));
1460 lock.l_type = *ptype;
1461 lock.l_whence = SEEK_SET;
1462 lock.l_start = *poffset;
1463 lock.l_len = *pcount;
1466 ret = sys_fcntl_ptr(fd,SMB_F_GETLK,&lock);
1470 DEBUG(3,("fcntl_getlock: lock request failed at offset %.0f count %.0f type %d (%s)\n",
1471 (double)*poffset,(double)*pcount,*ptype,strerror(errno)));
1476 *ptype = lock.l_type;
1477 *poffset = lock.l_start;
1478 *pcount = lock.l_len;
1481 DEBUG(3,("fcntl_getlock: fd %d is returned info %d pid %u\n",
1482 fd, (int)lock.l_type, (unsigned int)lock.l_pid));
1487 #define DBGC_CLASS DBGC_ALL
1489 /*******************************************************************
1490 Is the name specified one of my netbios names.
1491 Returns true if it is equal, false otherwise.
1492 ********************************************************************/
1494 bool is_myname(const char *s)
1499 for (n=0; my_netbios_names(n); n++) {
1500 if (strequal(my_netbios_names(n), s)) {
1505 DEBUG(8, ("is_myname(\"%s\") returns %d\n", s, ret));
1509 /*******************************************************************
1510 Is the name specified our workgroup/domain.
1511 Returns true if it is equal, false otherwise.
1512 ********************************************************************/
1514 bool is_myworkgroup(const char *s)
1518 if (strequal(s, lp_workgroup())) {
1522 DEBUG(8, ("is_myworkgroup(\"%s\") returns %d\n", s, ret));
1526 /*******************************************************************
1527 we distinguish between 2K and XP by the "Native Lan Manager" string
1528 WinXP => "Windows 2002 5.1"
1529 WinXP 64bit => "Windows XP 5.2"
1530 Win2k => "Windows 2000 5.0"
1531 NT4 => "Windows NT 4.0"
1532 Win9x => "Windows 4.0"
1533 Windows 2003 doesn't set the native lan manager string but
1534 they do set the domain to "Windows 2003 5.2" (probably a bug).
1535 ********************************************************************/
1537 void ra_lanman_string( const char *native_lanman )
1539 if ( strcmp( native_lanman, "Windows 2002 5.1" ) == 0 )
1540 set_remote_arch( RA_WINXP );
1541 else if ( strcmp( native_lanman, "Windows XP 5.2" ) == 0 )
1542 set_remote_arch( RA_WINXP64 );
1543 else if ( strcmp( native_lanman, "Windows Server 2003 5.2" ) == 0 )
1544 set_remote_arch( RA_WIN2K3 );
1547 static const char *remote_arch_str;
1549 const char *get_remote_arch_str(void)
1551 if (!remote_arch_str) {
1554 return remote_arch_str;
1557 /*******************************************************************
1558 Set the horrid remote_arch string based on an enum.
1559 ********************************************************************/
1561 void set_remote_arch(enum remote_arch_types type)
1566 remote_arch_str = "WfWg";
1569 remote_arch_str = "OS2";
1572 remote_arch_str = "Win95";
1575 remote_arch_str = "WinNT";
1578 remote_arch_str = "Win2K";
1581 remote_arch_str = "WinXP";
1584 remote_arch_str = "WinXP64";
1587 remote_arch_str = "Win2K3";
1590 remote_arch_str = "Vista";
1593 remote_arch_str = "Samba";
1596 remote_arch_str = "CIFSFS";
1599 remote_arch_str = "OSX";
1602 ra_type = RA_UNKNOWN;
1603 remote_arch_str = "UNKNOWN";
1607 DEBUG(10,("set_remote_arch: Client arch is \'%s\'\n",
1611 /*******************************************************************
1612 Get the remote_arch type.
1613 ********************************************************************/
1615 enum remote_arch_types get_remote_arch(void)
1620 const char *tab_depth(int level, int depth)
1622 if( CHECK_DEBUGLVL(level) ) {
1623 dbgtext("%*s", depth*4, "");
1628 /*****************************************************************************
1629 Provide a checksum on a string
1631 Input: s - the null-terminated character string for which the checksum
1634 Output: The checksum value calculated for s.
1635 *****************************************************************************/
1637 int str_checksum(const char *s)
1639 TDB_DATA key = string_tdb_data(s);
1640 return tdb_jenkins_hash(&key);
1643 /*****************************************************************
1644 Zero a memory area then free it. Used to catch bugs faster.
1645 *****************************************************************/
1647 void zero_free(void *p, size_t size)
1653 /*****************************************************************
1654 Set our open file limit to a requested max and return the limit.
1655 *****************************************************************/
1657 int set_maxfiles(int requested_max)
1659 #if (defined(HAVE_GETRLIMIT) && defined(RLIMIT_NOFILE))
1661 int saved_current_limit;
1663 if(getrlimit(RLIMIT_NOFILE, &rlp)) {
1664 DEBUG(0,("set_maxfiles: getrlimit (1) for RLIMIT_NOFILE failed with error %s\n",
1667 return requested_max;
1671 * Set the fd limit to be real_max_open_files + MAX_OPEN_FUDGEFACTOR to
1672 * account for the extra fd we need
1673 * as well as the log files and standard
1674 * handles etc. Save the limit we want to set in case
1675 * we are running on an OS that doesn't support this limit (AIX)
1676 * which always returns RLIM_INFINITY for rlp.rlim_max.
1679 /* Try raising the hard (max) limit to the requested amount. */
1681 #if defined(RLIM_INFINITY)
1682 if (rlp.rlim_max != RLIM_INFINITY) {
1683 int orig_max = rlp.rlim_max;
1685 if ( rlp.rlim_max < requested_max )
1686 rlp.rlim_max = requested_max;
1688 /* This failing is not an error - many systems (Linux) don't
1689 support our default request of 10,000 open files. JRA. */
1691 if(setrlimit(RLIMIT_NOFILE, &rlp)) {
1692 DEBUG(3,("set_maxfiles: setrlimit for RLIMIT_NOFILE for %d max files failed with error %s\n",
1693 (int)rlp.rlim_max, strerror(errno) ));
1695 /* Set failed - restore original value from get. */
1696 rlp.rlim_max = orig_max;
1701 /* Now try setting the soft (current) limit. */
1703 saved_current_limit = rlp.rlim_cur = MIN(requested_max,rlp.rlim_max);
1705 if(setrlimit(RLIMIT_NOFILE, &rlp)) {
1706 DEBUG(0,("set_maxfiles: setrlimit for RLIMIT_NOFILE for %d files failed with error %s\n",
1707 (int)rlp.rlim_cur, strerror(errno) ));
1709 return saved_current_limit;
1712 if(getrlimit(RLIMIT_NOFILE, &rlp)) {
1713 DEBUG(0,("set_maxfiles: getrlimit (2) for RLIMIT_NOFILE failed with error %s\n",
1716 return saved_current_limit;
1719 #if defined(RLIM_INFINITY)
1720 if(rlp.rlim_cur == RLIM_INFINITY)
1721 return saved_current_limit;
1724 if((int)rlp.rlim_cur > saved_current_limit)
1725 return saved_current_limit;
1727 return rlp.rlim_cur;
1728 #else /* !defined(HAVE_GETRLIMIT) || !defined(RLIMIT_NOFILE) */
1730 * No way to know - just guess...
1732 return requested_max;
1736 /*****************************************************************
1737 malloc that aborts with smb_panic on fail or zero size.
1738 *****************************************************************/
1740 void *smb_xmalloc_array(size_t size, unsigned int count)
1744 smb_panic("smb_xmalloc_array: called with zero size");
1746 if (count >= MAX_ALLOC_SIZE/size) {
1747 smb_panic("smb_xmalloc_array: alloc size too large");
1749 if ((p = SMB_MALLOC(size*count)) == NULL) {
1750 DEBUG(0, ("smb_xmalloc_array failed to allocate %lu * %lu bytes\n",
1751 (unsigned long)size, (unsigned long)count));
1752 smb_panic("smb_xmalloc_array: malloc failed");
1758 vasprintf that aborts on malloc fail
1761 int smb_xvasprintf(char **ptr, const char *format, va_list ap)
1768 n = vasprintf(ptr, format, ap2);
1770 if (n == -1 || ! *ptr) {
1771 smb_panic("smb_xvasprintf: out of memory");
1776 /*****************************************************************
1777 Get local hostname and cache result.
1778 *****************************************************************/
1780 char *myhostname(void)
1784 ret = get_myname(NULL);
1790 * @brief Returns an absolute path to a file concatenating the provided
1791 * @a rootpath and @a basename
1793 * @param name Filename, relative to @a rootpath
1795 * @retval Pointer to a string containing the full path.
1798 static char *xx_path(const char *name, const char *rootpath)
1802 fname = talloc_strdup(talloc_tos(), rootpath);
1806 trim_string(fname,"","/");
1808 if (!directory_exist(fname)) {
1809 if (!mkdir(fname,0755))
1810 DEBUG(1, ("Unable to create directory %s for file %s. "
1811 "Error was %s\n", fname, name, strerror(errno)));
1814 return talloc_asprintf(talloc_tos(),
1821 * @brief Returns an absolute path to a file in the Samba lock directory.
1823 * @param name File to find, relative to LOCKDIR.
1825 * @retval Pointer to a talloc'ed string containing the full path.
1828 char *lock_path(const char *name)
1830 return xx_path(name, lp_lockdir());
1834 * @brief Returns an absolute path to a file in the Samba pid directory.
1836 * @param name File to find, relative to PIDDIR.
1838 * @retval Pointer to a talloc'ed string containing the full path.
1841 char *pid_path(const char *name)
1843 return xx_path(name, lp_piddir());
1847 * @brief Returns an absolute path to a file in the Samba lib directory.
1849 * @param name File to find, relative to LIBDIR.
1851 * @retval Pointer to a string containing the full path.
1854 char *lib_path(const char *name)
1856 return talloc_asprintf(talloc_tos(), "%s/%s", get_dyn_LIBDIR(), name);
1860 * @brief Returns an absolute path to a file in the Samba modules directory.
1862 * @param name File to find, relative to MODULESDIR.
1864 * @retval Pointer to a string containing the full path.
1867 char *modules_path(const char *name)
1869 return talloc_asprintf(talloc_tos(), "%s/%s", get_dyn_MODULESDIR(), name);
1873 * @brief Returns an absolute path to a file in the Samba data directory.
1875 * @param name File to find, relative to CODEPAGEDIR.
1877 * @retval Pointer to a talloc'ed string containing the full path.
1880 char *data_path(const char *name)
1882 return talloc_asprintf(talloc_tos(), "%s/%s", get_dyn_CODEPAGEDIR(), name);
1886 * @brief Returns an absolute path to a file in the Samba state directory.
1888 * @param name File to find, relative to STATEDIR.
1890 * @retval Pointer to a talloc'ed string containing the full path.
1893 char *state_path(const char *name)
1895 return xx_path(name, lp_statedir());
1899 * @brief Returns an absolute path to a file in the Samba cache directory.
1901 * @param name File to find, relative to CACHEDIR.
1903 * @retval Pointer to a talloc'ed string containing the full path.
1906 char *cache_path(const char *name)
1908 return xx_path(name, lp_cachedir());
1912 * @brief Returns the platform specific shared library extension.
1914 * @retval Pointer to a const char * containing the extension.
1917 const char *shlib_ext(void)
1919 return get_dyn_SHLIBEXT();
1922 /*******************************************************************
1923 Given a filename - get its directory name
1924 ********************************************************************/
1926 bool parent_dirname(TALLOC_CTX *mem_ctx, const char *dir, char **parent,
1932 p = strrchr_m(dir, '/'); /* Find final '/', if any */
1935 if (!(*parent = talloc_strdup(mem_ctx, "."))) {
1946 if (!(*parent = (char *)TALLOC_MEMDUP(mem_ctx, dir, len+1))) {
1949 (*parent)[len] = '\0';
1957 /*******************************************************************
1958 Determine if a pattern contains any Microsoft wildcard characters.
1959 *******************************************************************/
1961 bool ms_has_wild(const char *s)
1965 if (lp_posix_pathnames()) {
1966 /* With posix pathnames no characters are wild. */
1970 while ((c = *s++)) {
1983 bool ms_has_wild_w(const smb_ucs2_t *s)
1986 if (!s) return False;
1987 while ((c = *s++)) {
1989 case UCS2_CHAR('*'):
1990 case UCS2_CHAR('?'):
1991 case UCS2_CHAR('<'):
1992 case UCS2_CHAR('>'):
1993 case UCS2_CHAR('"'):
2000 /*******************************************************************
2001 A wrapper that handles case sensitivity and the special handling
2003 *******************************************************************/
2005 bool mask_match(const char *string, const char *pattern, bool is_case_sensitive)
2007 if (ISDOTDOT(string))
2012 return ms_fnmatch(pattern, string, Protocol <= PROTOCOL_LANMAN2, is_case_sensitive) == 0;
2015 /*******************************************************************
2016 A wrapper that handles case sensitivity and the special handling
2017 of the ".." name. Varient that is only called by old search code which requires
2018 pattern translation.
2019 *******************************************************************/
2021 bool mask_match_search(const char *string, const char *pattern, bool is_case_sensitive)
2023 if (ISDOTDOT(string))
2028 return ms_fnmatch(pattern, string, True, is_case_sensitive) == 0;
2031 /*******************************************************************
2032 A wrapper that handles a list of patters and calls mask_match()
2033 on each. Returns True if any of the patterns match.
2034 *******************************************************************/
2036 bool mask_match_list(const char *string, char **list, int listLen, bool is_case_sensitive)
2038 while (listLen-- > 0) {
2039 if (mask_match(string, *list++, is_case_sensitive))
2045 /*********************************************************
2046 Recursive routine that is called by unix_wild_match.
2047 *********************************************************/
2049 static bool unix_do_match(const char *regexp, const char *str)
2053 for( p = regexp; *p && *str; ) {
2064 * Look for a character matching
2065 * the one after the '*'.
2069 return true; /* Automatic match */
2072 while(*str && (*p != *str))
2076 * Patch from weidel@multichart.de. In the case of the regexp
2077 * '*XX*' we want to ensure there are at least 2 'X' characters
2078 * in the string after the '*' for a match to be made.
2085 * Eat all the characters that match, but count how many there were.
2088 while(*str && (*p == *str)) {
2094 * Now check that if the regexp had n identical characters that
2095 * matchcount had at least that many matches.
2098 while ( *(p+1) && (*(p+1) == *p)) {
2103 if ( matchcount <= 0 )
2107 str--; /* We've eaten the match char after the '*' */
2109 if(unix_do_match(p, str))
2131 if (!*p && str[0] == '.' && str[1] == 0)
2134 if (!*str && *p == '?') {
2140 if(!*str && (*p == '*' && p[1] == '\0'))
2146 /*******************************************************************
2147 Simple case insensitive interface to a UNIX wildcard matcher.
2148 Returns True if match, False if not.
2149 *******************************************************************/
2151 bool unix_wild_match(const char *pattern, const char *string)
2153 TALLOC_CTX *ctx = talloc_stackframe();
2159 p2 = talloc_strdup(ctx,pattern);
2160 s2 = talloc_strdup(ctx,string);
2168 /* Remove any *? and ** from the pattern as they are meaningless */
2169 for(p = p2; *p; p++) {
2170 while( *p == '*' && (p[1] == '?' ||p[1] == '*')) {
2171 memmove(&p[1], &p[2], strlen(&p[2])+1);
2175 if (strequal(p2,"*")) {
2180 ret = unix_do_match(p2, s2);
2185 /**********************************************************************
2186 Converts a name to a fully qualified domain name.
2187 Returns true if lookup succeeded, false if not (then fqdn is set to name)
2188 Note we deliberately use gethostbyname here, not getaddrinfo as we want
2189 to examine the h_aliases and I don't know how to do that with getaddrinfo.
2190 ***********************************************************************/
2192 bool name_to_fqdn(fstring fqdn, const char *name)
2195 struct hostent *hp = gethostbyname(name);
2197 if (!hp || !hp->h_name || !*hp->h_name) {
2198 DEBUG(10,("name_to_fqdn: lookup for %s failed.\n", name));
2199 fstrcpy(fqdn, name);
2203 /* Find out if the fqdn is returned as an alias
2204 * to cope with /etc/hosts files where the first
2205 * name is not the fqdn but the short name */
2206 if (hp->h_aliases && (! strchr_m(hp->h_name, '.'))) {
2208 for (i = 0; hp->h_aliases[i]; i++) {
2209 if (strchr_m(hp->h_aliases[i], '.')) {
2210 full = hp->h_aliases[i];
2215 if (full && (StrCaseCmp(full, "localhost.localdomain") == 0)) {
2216 DEBUG(1, ("WARNING: your /etc/hosts file may be broken!\n"));
2217 DEBUGADD(1, (" Specifing the machine hostname for address 127.0.0.1 may lead\n"));
2218 DEBUGADD(1, (" to Kerberos authentication problems as localhost.localdomain\n"));
2219 DEBUGADD(1, (" may end up being used instead of the real machine FQDN.\n"));
2226 DEBUG(10,("name_to_fqdn: lookup for %s -> %s.\n", name, full));
2227 fstrcpy(fqdn, full);
2231 /**********************************************************************
2232 Append a DATA_BLOB to a talloc'ed object
2233 ***********************************************************************/
2235 void *talloc_append_blob(TALLOC_CTX *mem_ctx, void *buf, DATA_BLOB blob)
2237 size_t old_size = 0;
2240 if (blob.length == 0) {
2245 old_size = talloc_get_size(buf);
2248 result = (char *)TALLOC_REALLOC(mem_ctx, buf, old_size + blob.length);
2249 if (result == NULL) {
2253 memcpy(result + old_size, blob.data, blob.length);
2257 uint32 map_share_mode_to_deny_mode(uint32 share_access, uint32 private_options)
2259 switch (share_access & ~FILE_SHARE_DELETE) {
2260 case FILE_SHARE_NONE:
2262 case FILE_SHARE_READ:
2264 case FILE_SHARE_WRITE:
2266 case FILE_SHARE_READ|FILE_SHARE_WRITE:
2269 if (private_options & NTCREATEX_OPTIONS_PRIVATE_DENY_DOS) {
2271 } else if (private_options & NTCREATEX_OPTIONS_PRIVATE_DENY_FCB) {
2278 pid_t procid_to_pid(const struct server_id *proc)
2283 static uint32 my_vnn = NONCLUSTER_VNN;
2285 void set_my_vnn(uint32 vnn)
2287 DEBUG(10, ("vnn pid %d = %u\n", (int)sys_getpid(), (unsigned int)vnn));
2291 uint32 get_my_vnn(void)
2296 static uint64_t my_unique_id = 0;
2298 void set_my_unique_id(uint64_t unique_id)
2300 my_unique_id = unique_id;
2303 struct server_id pid_to_procid(pid_t pid)
2305 struct server_id result;
2307 result.unique_id = my_unique_id;
2308 result.vnn = my_vnn;
2312 struct server_id procid_self(void)
2314 return pid_to_procid(sys_getpid());
2317 bool procid_equal(const struct server_id *p1, const struct server_id *p2)
2319 if (p1->pid != p2->pid)
2321 if (p1->vnn != p2->vnn)
2326 bool cluster_id_equal(const struct server_id *id1,
2327 const struct server_id *id2)
2329 return procid_equal(id1, id2);
2332 bool procid_is_me(const struct server_id *pid)
2334 if (pid->pid != sys_getpid())
2336 if (pid->vnn != my_vnn)
2341 struct server_id interpret_pid(const char *pid_string)
2343 struct server_id result;
2346 if (sscanf(pid_string, "%u:%d", &vnn, &pid) == 2) {
2350 else if (sscanf(pid_string, "%d", &pid) == 1) {
2351 result.vnn = get_my_vnn();
2355 result.vnn = NONCLUSTER_VNN;
2358 /* Assigning to result.pid may have overflowed
2359 Map negative pid to -1: i.e. error */
2360 if (result.pid < 0) {
2363 result.unique_id = 0;
2367 char *procid_str(TALLOC_CTX *mem_ctx, const struct server_id *pid)
2369 if (pid->vnn == NONCLUSTER_VNN) {
2370 return talloc_asprintf(mem_ctx,
2375 return talloc_asprintf(mem_ctx,
2382 char *procid_str_static(const struct server_id *pid)
2384 return procid_str(talloc_tos(), pid);
2387 bool procid_valid(const struct server_id *pid)
2389 return (pid->pid != -1);
2392 bool procid_is_local(const struct server_id *pid)
2394 return pid->vnn == my_vnn;
2397 /****************************************************************
2398 Check if offset/length fit into bufsize. Should probably be
2399 merged with is_offset_safe, but this would require a rewrite
2400 of lanman.c. Later :-)
2401 ****************************************************************/
2403 bool trans_oob(uint32_t bufsize, uint32_t offset, uint32_t length)
2405 if ((offset + length < offset) || (offset + length < length)) {
2409 if ((offset > bufsize) || (offset + length > bufsize)) {
2416 /****************************************************************
2417 Check if an offset into a buffer is safe.
2418 If this returns True it's safe to indirect into the byte at
2420 ****************************************************************/
2422 bool is_offset_safe(const char *buf_base, size_t buf_len, char *ptr, size_t off)
2424 const char *end_base = buf_base + buf_len;
2425 char *end_ptr = ptr + off;
2427 if (!buf_base || !ptr) {
2431 if (end_base < buf_base || end_ptr < ptr) {
2432 return False; /* wrap. */
2435 if (end_ptr < end_base) {
2441 /****************************************************************
2442 Return a safe pointer into a buffer, or NULL.
2443 ****************************************************************/
2445 char *get_safe_ptr(const char *buf_base, size_t buf_len, char *ptr, size_t off)
2447 return is_offset_safe(buf_base, buf_len, ptr, off) ?
2451 /****************************************************************
2452 Return a safe pointer into a string within a buffer, or NULL.
2453 ****************************************************************/
2455 char *get_safe_str_ptr(const char *buf_base, size_t buf_len, char *ptr, size_t off)
2457 if (!is_offset_safe(buf_base, buf_len, ptr, off)) {
2460 /* Check if a valid string exists at this offset. */
2461 if (skip_string(buf_base,buf_len, ptr + off) == NULL) {
2467 /****************************************************************
2468 Return an SVAL at a pointer, or failval if beyond the end.
2469 ****************************************************************/
2471 int get_safe_SVAL(const char *buf_base, size_t buf_len, char *ptr, size_t off, int failval)
2474 * Note we use off+1 here, not off+2 as SVAL accesses ptr[0] and ptr[1],
2477 if (!is_offset_safe(buf_base, buf_len, ptr, off+1)) {
2480 return SVAL(ptr,off);
2483 /****************************************************************
2484 Return an IVAL at a pointer, or failval if beyond the end.
2485 ****************************************************************/
2487 int get_safe_IVAL(const char *buf_base, size_t buf_len, char *ptr, size_t off, int failval)
2490 * Note we use off+3 here, not off+4 as IVAL accesses
2491 * ptr[0] ptr[1] ptr[2] ptr[3] NOT ptr[4].
2493 if (!is_offset_safe(buf_base, buf_len, ptr, off+3)) {
2496 return IVAL(ptr,off);
2499 /****************************************************************
2500 Split DOM\user into DOM and user. Do not mix with winbind variants of that
2501 call (they take care of winbind separator and other winbind specific settings).
2502 ****************************************************************/
2504 void split_domain_user(TALLOC_CTX *mem_ctx,
2505 const char *full_name,
2509 const char *p = NULL;
2511 p = strchr_m(full_name, '\\');
2514 *domain = talloc_strndup(mem_ctx, full_name,
2515 PTR_DIFF(p, full_name));
2516 *user = talloc_strdup(mem_ctx, p+1);
2518 *domain = talloc_strdup(mem_ctx, "");
2519 *user = talloc_strdup(mem_ctx, full_name);
2525 Disable these now we have checked all code paths and ensured
2526 NULL returns on zero request. JRA.
2528 /****************************************************************
2529 talloc wrapper functions that guarentee a null pointer return
2531 ****************************************************************/
2533 #ifndef MAX_TALLOC_SIZE
2534 #define MAX_TALLOC_SIZE 0x10000000
2538 * talloc and zero memory.
2539 * - returns NULL if size is zero.
2542 void *_talloc_zero_zeronull(const void *ctx, size_t size, const char *name)
2550 p = talloc_named_const(ctx, size, name);
2553 memset(p, '\0', size);
2560 * memdup with a talloc.
2561 * - returns NULL if size is zero.
2564 void *_talloc_memdup_zeronull(const void *t, const void *p, size_t size, const char *name)
2572 newp = talloc_named_const(t, size, name);
2574 memcpy(newp, p, size);
2581 * alloc an array, checking for integer overflow in the array size.
2582 * - returns NULL if count or el_size are zero.
2585 void *_talloc_array_zeronull(const void *ctx, size_t el_size, unsigned count, const char *name)
2587 if (count >= MAX_TALLOC_SIZE/el_size) {
2591 if (el_size == 0 || count == 0) {
2595 return talloc_named_const(ctx, el_size * count, name);
2599 * alloc an zero array, checking for integer overflow in the array size
2600 * - returns NULL if count or el_size are zero.
2603 void *_talloc_zero_array_zeronull(const void *ctx, size_t el_size, unsigned count, const char *name)
2605 if (count >= MAX_TALLOC_SIZE/el_size) {
2609 if (el_size == 0 || count == 0) {
2613 return _talloc_zero(ctx, el_size * count, name);
2617 * Talloc wrapper that returns NULL if size == 0.
2619 void *talloc_zeronull(const void *context, size_t size, const char *name)
2624 return talloc_named_const(context, size, name);
2628 /****************************************************************
2629 strip off leading '\\' from a hostname
2630 ****************************************************************/
2632 const char *strip_hostname(const char *s)
2638 if (strlen_m(s) < 3) {
2642 if (s[0] == '\\') s++;
2643 if (s[0] == '\\') s++;
2648 bool tevent_req_poll_ntstatus(struct tevent_req *req,
2649 struct tevent_context *ev,
2652 bool ret = tevent_req_poll(req, ev);
2654 *status = map_nt_error_from_unix(errno);
2659 bool any_nt_status_not_ok(NTSTATUS err1, NTSTATUS err2, NTSTATUS *result)
2661 if (!NT_STATUS_IS_OK(err1)) {
2665 if (!NT_STATUS_IS_OK(err2)) {
2672 int timeval_to_msec(struct timeval t)
2674 return t.tv_sec * 1000 + (t.tv_usec+999) / 1000;