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 )
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_names: malloc fail.\n" ) );
229 if (!set_netbios_aliases(lp_netbios_aliases())) {
230 DEBUG( 0, ( "init_names: 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 /*******************************************************************
246 Check if a file exists - call vfs_file_exist for samba files.
247 ********************************************************************/
249 bool file_exist_stat(const char *fname,SMB_STRUCT_STAT *sbuf,
250 bool fake_dir_create_times)
256 if (sys_stat(fname, sbuf, fake_dir_create_times) != 0)
259 return((S_ISREG(sbuf->st_ex_mode)) || (S_ISFIFO(sbuf->st_ex_mode)));
262 /*******************************************************************
263 Check if a unix domain socket exists - call vfs_file_exist for samba files.
264 ********************************************************************/
266 bool socket_exist(const char *fname)
269 if (sys_stat(fname, &st, false) != 0)
272 return S_ISSOCK(st.st_ex_mode);
275 /*******************************************************************
276 Returns the size in bytes of the named given the stat struct.
277 ********************************************************************/
279 uint64_t get_file_size_stat(const SMB_STRUCT_STAT *sbuf)
281 return sbuf->st_ex_size;
284 /*******************************************************************
285 Returns the size in bytes of the named file.
286 ********************************************************************/
288 SMB_OFF_T get_file_size(char *file_name)
292 if (sys_stat(file_name, &buf, false) != 0)
293 return (SMB_OFF_T)-1;
294 return get_file_size_stat(&buf);
297 /*******************************************************************
298 Show a smb message structure.
299 ********************************************************************/
301 void show_msg(const char *buf)
309 DEBUG(5,("size=%d\nsmb_com=0x%x\nsmb_rcls=%d\nsmb_reh=%d\nsmb_err=%d\nsmb_flg=%d\nsmb_flg2=%d\n",
311 (int)CVAL(buf,smb_com),
312 (int)CVAL(buf,smb_rcls),
313 (int)CVAL(buf,smb_reh),
314 (int)SVAL(buf,smb_err),
315 (int)CVAL(buf,smb_flg),
316 (int)SVAL(buf,smb_flg2)));
317 DEBUGADD(5,("smb_tid=%d\nsmb_pid=%d\nsmb_uid=%d\nsmb_mid=%d\n",
318 (int)SVAL(buf,smb_tid),
319 (int)SVAL(buf,smb_pid),
320 (int)SVAL(buf,smb_uid),
321 (int)SVAL(buf,smb_mid)));
322 DEBUGADD(5,("smt_wct=%d\n",(int)CVAL(buf,smb_wct)));
324 for (i=0;i<(int)CVAL(buf,smb_wct);i++)
325 DEBUGADD(5,("smb_vwv[%2d]=%5d (0x%X)\n",i,
326 SVAL(buf,smb_vwv+2*i),SVAL(buf,smb_vwv+2*i)));
328 bcc = (int)SVAL(buf,smb_vwv+2*(CVAL(buf,smb_wct)));
330 DEBUGADD(5,("smb_bcc=%d\n",bcc));
338 dump_data(10, (const uint8 *)smb_buf_const(buf), bcc);
341 /*******************************************************************
342 Set the length and marker of an encrypted smb packet.
343 ********************************************************************/
345 void smb_set_enclen(char *buf,int len,uint16 enc_ctx_num)
347 _smb_setlen(buf,len);
351 SSVAL(buf,6,enc_ctx_num);
354 /*******************************************************************
355 Set the length and marker of an smb packet.
356 ********************************************************************/
358 void smb_setlen(char *buf,int len)
360 _smb_setlen(buf,len);
368 /*******************************************************************
369 Setup only the byte count for a smb message.
370 ********************************************************************/
372 int set_message_bcc(char *buf,int num_bytes)
374 int num_words = CVAL(buf,smb_wct);
375 SSVAL(buf,smb_vwv + num_words*SIZEOFWORD,num_bytes);
376 _smb_setlen(buf,smb_size + num_words*2 + num_bytes - 4);
377 return (smb_size + num_words*2 + num_bytes);
380 /*******************************************************************
381 Add a data blob to the end of a smb_buf, adjusting bcc and smb_len.
382 Return the bytes added
383 ********************************************************************/
385 ssize_t message_push_blob(uint8 **outbuf, DATA_BLOB blob)
387 size_t newlen = smb_len(*outbuf) + 4 + blob.length;
390 if (!(tmp = TALLOC_REALLOC_ARRAY(NULL, *outbuf, uint8, newlen))) {
391 DEBUG(0, ("talloc failed\n"));
396 memcpy(tmp + smb_len(tmp) + 4, blob.data, blob.length);
397 set_message_bcc((char *)tmp, smb_buflen(tmp) + blob.length);
401 /*******************************************************************
402 Reduce a file name, removing .. elements.
403 ********************************************************************/
405 static char *dos_clean_name(TALLOC_CTX *ctx, const char *s)
410 DEBUG(3,("dos_clean_name [%s]\n",s));
412 /* remove any double slashes */
413 str = talloc_all_string_sub(ctx, s, "\\\\", "\\");
418 /* Remove leading .\\ characters */
419 if(strncmp(str, ".\\", 2) == 0) {
420 trim_string(str, ".\\", NULL);
422 str = talloc_strdup(ctx, ".\\");
429 while ((p = strstr_m(str,"\\..\\")) != NULL) {
435 if ((p=strrchr_m(str,'\\')) != NULL) {
440 str = talloc_asprintf(ctx,
449 trim_string(str,NULL,"\\..");
450 return talloc_all_string_sub(ctx, str, "\\.\\", "\\");
453 /*******************************************************************
454 Reduce a file name, removing .. elements.
455 ********************************************************************/
457 char *unix_clean_name(TALLOC_CTX *ctx, const char *s)
462 DEBUG(3,("unix_clean_name [%s]\n",s));
464 /* remove any double slashes */
465 str = talloc_all_string_sub(ctx, s, "//","/");
470 /* Remove leading ./ characters */
471 if(strncmp(str, "./", 2) == 0) {
472 trim_string(str, "./", NULL);
474 str = talloc_strdup(ctx, "./");
481 while ((p = strstr_m(str,"/../")) != NULL) {
487 if ((p=strrchr_m(str,'/')) != NULL) {
492 str = talloc_asprintf(ctx,
501 trim_string(str,NULL,"/..");
502 return talloc_all_string_sub(ctx, str, "/./", "/");
505 char *clean_name(TALLOC_CTX *ctx, const char *s)
507 char *str = dos_clean_name(ctx, s);
511 return unix_clean_name(ctx, str);
514 /*******************************************************************
515 Write data into an fd at a given offset. Ignore seek errors.
516 ********************************************************************/
518 ssize_t write_data_at_offset(int fd, const char *buffer, size_t N, SMB_OFF_T pos)
523 if (pos == (SMB_OFF_T)-1) {
524 return write_data(fd, buffer, N);
526 #if defined(HAVE_PWRITE) || defined(HAVE_PRWITE64)
528 ret = sys_pwrite(fd,buffer + total,N - total, pos);
529 if (ret == -1 && errno == ESPIPE) {
530 return write_data(fd, buffer + total,N - total);
533 DEBUG(0,("write_data_at_offset: write failure. Error = %s\n", strerror(errno) ));
542 return (ssize_t)total;
544 /* Use lseek and write_data. */
545 if (sys_lseek(fd, pos, SEEK_SET) == -1) {
546 if (errno != ESPIPE) {
550 return write_data(fd, buffer, N);
555 NTSTATUS reinit_after_fork(struct messaging_context *msg_ctx,
556 struct event_context *ev_ctx,
558 bool parent_longlived)
560 NTSTATUS status = NT_STATUS_OK;
562 /* Reset the state of the random
563 * number generation system, so
564 * children do not get the same random
565 * numbers as each other */
566 set_need_random_reseed();
568 /* tdb needs special fork handling */
569 if (tdb_reopen_all(parent_longlived ? 1 : 0) == -1) {
570 DEBUG(0,("tdb_reopen_all failed.\n"));
571 status = NT_STATUS_OPEN_FAILED;
575 if (ev_ctx && tevent_re_initialise(ev_ctx) != 0) {
576 smb_panic(__location__ ": Failed to re-initialise event context");
581 * For clustering, we need to re-init our ctdbd connection after the
584 status = messaging_reinit(msg_ctx, id);
585 if (!NT_STATUS_IS_OK(status)) {
586 DEBUG(0,("messaging_reinit() failed: %s\n",
594 #if defined(PARANOID_MALLOC_CHECKER)
596 /****************************************************************************
597 Internal malloc wrapper. Externally visible.
598 ****************************************************************************/
600 void *malloc_(size_t size)
607 #define malloc(s) __ERROR_DONT_USE_MALLOC_DIRECTLY
610 /****************************************************************************
611 Internal calloc wrapper. Not externally visible.
612 ****************************************************************************/
614 static void *calloc_(size_t count, size_t size)
616 if (size == 0 || count == 0) {
620 return calloc(count, size);
621 #define calloc(n,s) __ERROR_DONT_USE_CALLOC_DIRECTLY
624 /****************************************************************************
625 Internal realloc wrapper. Not externally visible.
626 ****************************************************************************/
628 static void *realloc_(void *ptr, size_t size)
631 return realloc(ptr, size);
632 #define realloc(p,s) __ERROR_DONT_USE_RELLOC_DIRECTLY
635 #endif /* PARANOID_MALLOC_CHECKER */
637 /****************************************************************************
639 ****************************************************************************/
641 void *memalign_array(size_t el_size, size_t align, unsigned int count)
643 if (count >= MAX_ALLOC_SIZE/el_size) {
647 return sys_memalign(align, el_size*count);
650 /****************************************************************************
652 ****************************************************************************/
654 void *calloc_array(size_t size, size_t nmemb)
656 if (nmemb >= MAX_ALLOC_SIZE/size) {
659 if (size == 0 || nmemb == 0) {
662 #if defined(PARANOID_MALLOC_CHECKER)
663 return calloc_(nmemb, size);
665 return calloc(nmemb, size);
669 /****************************************************************************
670 Expand a pointer to be a particular size.
671 Note that this version of Realloc has an extra parameter that decides
672 whether to free the passed in storage on allocation failure or if the
675 This is designed for use in the typical idiom of :
677 p = SMB_REALLOC(p, size)
682 and not to have to keep track of the old 'p' contents to free later, nor
683 to worry if the size parameter was zero. In the case where NULL is returned
684 we guarentee that p has been freed.
686 If free later semantics are desired, then pass 'free_old_on_error' as False which
687 guarentees that the old contents are not freed on error, even if size == 0. To use
690 tmp = SMB_REALLOC_KEEP_OLD_ON_ERROR(p, size);
698 Changes were instigated by Coverity error checking. JRA.
699 ****************************************************************************/
701 void *Realloc(void *p, size_t size, bool free_old_on_error)
706 if (free_old_on_error) {
709 DEBUG(2,("Realloc asked for 0 bytes\n"));
713 #if defined(PARANOID_MALLOC_CHECKER)
715 ret = (void *)malloc_(size);
717 ret = (void *)realloc_(p,size);
721 ret = (void *)malloc(size);
723 ret = (void *)realloc(p,size);
728 if (free_old_on_error && p) {
731 DEBUG(0,("Memory allocation error: failed to expand to %d bytes\n",(int)size));
737 /****************************************************************************
738 (Hopefully) efficient array append.
739 ****************************************************************************/
741 void add_to_large_array(TALLOC_CTX *mem_ctx, size_t element_size,
742 void *element, void *_array, uint32 *num_elements,
745 void **array = (void **)_array;
747 if (*array_size < 0) {
751 if (*array == NULL) {
752 if (*array_size == 0) {
756 if (*array_size >= MAX_ALLOC_SIZE/element_size) {
760 *array = TALLOC(mem_ctx, element_size * (*array_size));
761 if (*array == NULL) {
766 if (*num_elements == *array_size) {
769 if (*array_size >= MAX_ALLOC_SIZE/element_size) {
773 *array = TALLOC_REALLOC(mem_ctx, *array,
774 element_size * (*array_size));
776 if (*array == NULL) {
781 memcpy((char *)(*array) + element_size*(*num_elements),
782 element, element_size);
792 /****************************************************************************
793 Get my own domain name, or "" if we have none.
794 ****************************************************************************/
796 char *get_mydnsdomname(TALLOC_CTX *ctx)
801 domname = get_mydnsfullname();
806 p = strchr_m(domname, '.');
809 return talloc_strdup(ctx, p);
811 return talloc_strdup(ctx, "");
815 /****************************************************************************
816 Interpret a protocol description string, with a default.
817 ****************************************************************************/
819 int interpret_protocol(const char *str,int def)
821 if (strequal(str,"NT1"))
822 return(PROTOCOL_NT1);
823 if (strequal(str,"LANMAN2"))
824 return(PROTOCOL_LANMAN2);
825 if (strequal(str,"LANMAN1"))
826 return(PROTOCOL_LANMAN1);
827 if (strequal(str,"CORE"))
828 return(PROTOCOL_CORE);
829 if (strequal(str,"COREPLUS"))
830 return(PROTOCOL_COREPLUS);
831 if (strequal(str,"CORE+"))
832 return(PROTOCOL_COREPLUS);
834 DEBUG(0,("Unrecognised protocol level %s\n",str));
840 #if (defined(HAVE_NETGROUP) && defined(WITH_AUTOMOUNT))
841 /******************************************************************
842 Remove any mount options such as -rsize=2048,wsize=2048 etc.
843 Based on a fix from <Thomas.Hepper@icem.de>.
844 Returns a malloc'ed string.
845 *******************************************************************/
847 static char *strip_mount_options(TALLOC_CTX *ctx, const char *str)
851 while(*p && !isspace(*p))
853 while(*p && isspace(*p))
856 return talloc_strdup(ctx, p);
862 /*******************************************************************
863 Patch from jkf@soton.ac.uk
864 Split Luke's automount_server into YP lookup and string splitter
865 so can easily implement automount_path().
866 Returns a malloc'ed string.
867 *******************************************************************/
869 #ifdef WITH_NISPLUS_HOME
870 char *automount_lookup(TALLOC_CTX *ctx, const char *user_name)
874 char *nis_map = (char *)lp_nis_home_map_name();
876 char buffer[NIS_MAXATTRVAL + 1];
881 snprintf(buffer, sizeof(buffer), "[key=%s],%s", user_name, nis_map);
882 DEBUG(5, ("NIS+ querystring: %s\n", buffer));
884 if (result = nis_list(buffer, FOLLOW_PATH|EXPAND_NAME|HARD_LOOKUP, NULL, NULL)) {
885 if (result->status != NIS_SUCCESS) {
886 DEBUG(3, ("NIS+ query failed: %s\n", nis_sperrno(result->status)));
888 object = result->objects.objects_val;
889 if (object->zo_data.zo_type == ENTRY_OBJ) {
890 entry = &object->zo_data.objdata_u.en_data;
891 DEBUG(5, ("NIS+ entry type: %s\n", entry->en_type));
892 DEBUG(3, ("NIS+ result: %s\n", entry->en_cols.en_cols_val[1].ec_value.ec_value_val));
894 value = talloc_strdup(ctx,
895 entry->en_cols.en_cols_val[1].ec_value.ec_value_val);
897 nis_freeresult(result);
900 value = talloc_string_sub(ctx,
907 nis_freeresult(result);
910 value = strip_mount_options(ctx, value);
911 DEBUG(4, ("NIS+ Lookup: %s resulted in %s\n",
916 #else /* WITH_NISPLUS_HOME */
918 char *automount_lookup(TALLOC_CTX *ctx, const char *user_name)
922 int nis_error; /* returned by yp all functions */
923 char *nis_result; /* yp_match inits this */
924 int nis_result_len; /* and set this */
925 char *nis_domain; /* yp_get_default_domain inits this */
926 char *nis_map = (char *)lp_nis_home_map_name();
928 if ((nis_error = yp_get_default_domain(&nis_domain)) != 0) {
929 DEBUG(3, ("YP Error: %s\n", yperr_string(nis_error)));
933 DEBUG(5, ("NIS Domain: %s\n", nis_domain));
935 if ((nis_error = yp_match(nis_domain, nis_map, user_name,
936 strlen(user_name), &nis_result,
937 &nis_result_len)) == 0) {
938 if (nis_result_len > 0 && nis_result[nis_result_len] == '\n') {
939 nis_result[nis_result_len] = '\0';
941 value = talloc_strdup(ctx, nis_result);
945 value = strip_mount_options(ctx, value);
946 } else if(nis_error == YPERR_KEY) {
947 DEBUG(3, ("YP Key not found: while looking up \"%s\" in map \"%s\"\n",
948 user_name, nis_map));
949 DEBUG(3, ("using defaults for server and home directory\n"));
951 DEBUG(3, ("YP Error: \"%s\" while looking up \"%s\" in map \"%s\"\n",
952 yperr_string(nis_error), user_name, nis_map));
956 DEBUG(4, ("YP Lookup: %s resulted in %s\n", user_name, value));
960 #endif /* WITH_NISPLUS_HOME */
963 /****************************************************************************
964 Check if a process exists. Does this work on all unixes?
965 ****************************************************************************/
967 bool process_exists(const struct server_id pid)
969 if (procid_is_me(&pid)) {
973 if (procid_is_local(&pid)) {
974 return (kill(pid.pid,0) == 0 || errno != ESRCH);
977 #ifdef CLUSTER_SUPPORT
978 return ctdbd_process_exists(messaging_ctdbd_connection(),
985 /*******************************************************************
986 Convert a uid into a user name.
987 ********************************************************************/
989 const char *uidtoname(uid_t uid)
991 TALLOC_CTX *ctx = talloc_tos();
993 struct passwd *pass = NULL;
995 pass = getpwuid_alloc(ctx,uid);
997 name = talloc_strdup(ctx,pass->pw_name);
1000 name = talloc_asprintf(ctx,
1007 /*******************************************************************
1008 Convert a gid into a group name.
1009 ********************************************************************/
1011 char *gidtoname(gid_t gid)
1015 grp = getgrgid(gid);
1017 return talloc_strdup(talloc_tos(), grp->gr_name);
1020 return talloc_asprintf(talloc_tos(),
1026 /*******************************************************************
1027 Convert a user name into a uid.
1028 ********************************************************************/
1030 uid_t nametouid(const char *name)
1032 struct passwd *pass;
1036 pass = Get_Pwnam_alloc(talloc_tos(), name);
1043 u = (uid_t)strtol(name, &p, 0);
1044 if ((p != name) && (*p == '\0'))
1050 /*******************************************************************
1051 Convert a name to a gid_t if possible. Return -1 if not a group.
1052 ********************************************************************/
1054 gid_t nametogid(const char *name)
1060 g = (gid_t)strtol(name, &p, 0);
1061 if ((p != name) && (*p == '\0'))
1064 grp = sys_getgrnam(name);
1066 return(grp->gr_gid);
1070 /*******************************************************************
1071 Something really nasty happened - panic !
1072 ********************************************************************/
1074 void smb_panic_s3(const char *why)
1079 DEBUG(0,("PANIC (pid %llu): %s\n",
1080 (unsigned long long)sys_getpid(), why));
1083 cmd = lp_panic_action();
1085 DEBUG(0, ("smb_panic(): calling panic action [%s]\n", cmd));
1086 result = system(cmd);
1089 DEBUG(0, ("smb_panic(): fork failed in panic action: %s\n",
1092 DEBUG(0, ("smb_panic(): action returned status %d\n",
1093 WEXITSTATUS(result)));
1099 /*******************************************************************
1100 Print a backtrace of the stack to the debug log. This function
1101 DELIBERATELY LEAKS MEMORY. The expectation is that you should
1102 exit shortly after calling it.
1103 ********************************************************************/
1105 #ifdef HAVE_LIBUNWIND_H
1106 #include <libunwind.h>
1109 #ifdef HAVE_EXECINFO_H
1110 #include <execinfo.h>
1113 #ifdef HAVE_LIBEXC_H
1117 void log_stack_trace(void)
1119 #ifdef HAVE_LIBUNWIND
1120 /* Try to use libunwind before any other technique since on ia64
1121 * libunwind correctly walks the stack in more circumstances than
1124 unw_cursor_t cursor;
1129 unw_word_t ip, sp, off;
1131 procname[sizeof(procname) - 1] = '\0';
1133 if (unw_getcontext(&uc) != 0) {
1134 goto libunwind_failed;
1137 if (unw_init_local(&cursor, &uc) != 0) {
1138 goto libunwind_failed;
1141 DEBUG(0, ("BACKTRACE:\n"));
1145 unw_get_reg(&cursor, UNW_REG_IP, &ip);
1146 unw_get_reg(&cursor, UNW_REG_SP, &sp);
1148 switch (unw_get_proc_name(&cursor,
1149 procname, sizeof(procname) - 1, &off) ) {
1153 /* Name truncated. */
1154 DEBUGADD(0, (" #%u %s + %#llx [ip=%#llx] [sp=%#llx]\n",
1155 i, procname, (long long)off,
1156 (long long)ip, (long long) sp));
1159 /* case -UNW_ENOINFO: */
1160 /* case -UNW_EUNSPEC: */
1161 /* No symbol name found. */
1162 DEBUGADD(0, (" #%u %s [ip=%#llx] [sp=%#llx]\n",
1163 i, "<unknown symbol>",
1164 (long long)ip, (long long) sp));
1167 } while (unw_step(&cursor) > 0);
1172 DEBUG(0, ("unable to produce a stack trace with libunwind\n"));
1174 #elif HAVE_BACKTRACE_SYMBOLS
1175 void *backtrace_stack[BACKTRACE_STACK_SIZE];
1176 size_t backtrace_size;
1177 char **backtrace_strings;
1179 /* get the backtrace (stack frames) */
1180 backtrace_size = backtrace(backtrace_stack,BACKTRACE_STACK_SIZE);
1181 backtrace_strings = backtrace_symbols(backtrace_stack, backtrace_size);
1183 DEBUG(0, ("BACKTRACE: %lu stack frames:\n",
1184 (unsigned long)backtrace_size));
1186 if (backtrace_strings) {
1189 for (i = 0; i < backtrace_size; i++)
1190 DEBUGADD(0, (" #%u %s\n", i, backtrace_strings[i]));
1192 /* Leak the backtrace_strings, rather than risk what free() might do */
1197 /* The IRIX libexc library provides an API for unwinding the stack. See
1198 * libexc(3) for details. Apparantly trace_back_stack leaks memory, but
1199 * since we are about to abort anyway, it hardly matters.
1202 #define NAMESIZE 32 /* Arbitrary */
1204 __uint64_t addrs[BACKTRACE_STACK_SIZE];
1205 char * names[BACKTRACE_STACK_SIZE];
1206 char namebuf[BACKTRACE_STACK_SIZE * NAMESIZE];
1213 ZERO_ARRAY(namebuf);
1215 /* We need to be root so we can open our /proc entry to walk
1216 * our stack. It also helps when we want to dump core.
1220 for (i = 0; i < BACKTRACE_STACK_SIZE; i++) {
1221 names[i] = namebuf + (i * NAMESIZE);
1224 levels = trace_back_stack(0, addrs, names,
1225 BACKTRACE_STACK_SIZE, NAMESIZE - 1);
1227 DEBUG(0, ("BACKTRACE: %d stack frames:\n", levels));
1228 for (i = 0; i < levels; i++) {
1229 DEBUGADD(0, (" #%d 0x%llx %s\n", i, addrs[i], names[i]));
1234 DEBUG(0, ("unable to produce a stack trace on this platform\n"));
1238 /*******************************************************************
1239 A readdir wrapper which just returns the file name.
1240 ********************************************************************/
1242 const char *readdirname(SMB_STRUCT_DIR *p)
1244 SMB_STRUCT_DIRENT *ptr;
1250 ptr = (SMB_STRUCT_DIRENT *)sys_readdir(p);
1254 dname = ptr->d_name;
1261 #ifdef HAVE_BROKEN_READDIR_NAME
1262 /* using /usr/ucb/cc is BAD */
1266 return talloc_strdup(talloc_tos(), dname);
1269 /*******************************************************************
1270 Utility function used to decide if the last component
1271 of a path matches a (possibly wildcarded) entry in a namelist.
1272 ********************************************************************/
1274 bool is_in_path(const char *name, name_compare_entry *namelist, bool case_sensitive)
1276 const char *last_component;
1278 /* if we have no list it's obviously not in the path */
1279 if((namelist == NULL ) || ((namelist != NULL) && (namelist[0].name == NULL))) {
1283 DEBUG(8, ("is_in_path: %s\n", name));
1285 /* Get the last component of the unix name. */
1286 last_component = strrchr_m(name, '/');
1287 if (!last_component) {
1288 last_component = name;
1290 last_component++; /* Go past '/' */
1293 for(; namelist->name != NULL; namelist++) {
1294 if(namelist->is_wild) {
1295 if (mask_match(last_component, namelist->name, case_sensitive)) {
1296 DEBUG(8,("is_in_path: mask match succeeded\n"));
1300 if((case_sensitive && (strcmp(last_component, namelist->name) == 0))||
1301 (!case_sensitive && (StrCaseCmp(last_component, namelist->name) == 0))) {
1302 DEBUG(8,("is_in_path: match succeeded\n"));
1307 DEBUG(8,("is_in_path: match not found\n"));
1311 /*******************************************************************
1312 Strip a '/' separated list into an array of
1313 name_compare_enties structures suitable for
1314 passing to is_in_path(). We do this for
1315 speed so we can pre-parse all the names in the list
1316 and don't do it for each call to is_in_path().
1317 We also check if the entry contains a wildcard to
1318 remove a potentially expensive call to mask_match
1320 ********************************************************************/
1322 void set_namearray(name_compare_entry **ppname_array, const char *namelist_in)
1327 int num_entries = 0;
1330 (*ppname_array) = NULL;
1332 if((namelist_in == NULL ) || ((namelist_in != NULL) && (*namelist_in == '\0')))
1335 namelist = talloc_strdup(talloc_tos(), namelist_in);
1336 if (namelist == NULL) {
1337 DEBUG(0,("set_namearray: talloc fail\n"));
1342 /* We need to make two passes over the string. The
1343 first to count the number of elements, the second
1348 if ( *nameptr == '/' ) {
1349 /* cope with multiple (useless) /s) */
1353 /* anything left? */
1354 if ( *nameptr == '\0' )
1357 /* find the next '/' or consume remaining */
1358 name_end = strchr_m(nameptr, '/');
1359 if (name_end == NULL)
1360 name_end = (char *)nameptr + strlen(nameptr);
1362 /* next segment please */
1363 nameptr = name_end + 1;
1367 if(num_entries == 0) {
1368 talloc_free(namelist);
1372 if(( (*ppname_array) = SMB_MALLOC_ARRAY(name_compare_entry, num_entries + 1)) == NULL) {
1373 DEBUG(0,("set_namearray: malloc fail\n"));
1374 talloc_free(namelist);
1378 /* Now copy out the names */
1382 if ( *nameptr == '/' ) {
1383 /* cope with multiple (useless) /s) */
1387 /* anything left? */
1388 if ( *nameptr == '\0' )
1391 /* find the next '/' or consume remaining */
1392 name_end = strchr_m(nameptr, '/');
1396 name_end = nameptr + strlen(nameptr);
1398 (*ppname_array)[i].is_wild = ms_has_wild(nameptr);
1399 if(((*ppname_array)[i].name = SMB_STRDUP(nameptr)) == NULL) {
1400 DEBUG(0,("set_namearray: malloc fail (1)\n"));
1401 talloc_free(namelist);
1405 /* next segment please */
1406 nameptr = name_end + 1;
1410 (*ppname_array)[i].name = NULL;
1412 talloc_free(namelist);
1416 /****************************************************************************
1417 Routine to free a namearray.
1418 ****************************************************************************/
1420 void free_namearray(name_compare_entry *name_array)
1424 if(name_array == NULL)
1427 for(i=0; name_array[i].name!=NULL; i++)
1428 SAFE_FREE(name_array[i].name);
1429 SAFE_FREE(name_array);
1433 #define DBGC_CLASS DBGC_LOCKING
1435 /****************************************************************************
1436 Simple routine to query existing file locks. Cruft in NFS and 64->32 bit mapping
1437 is dealt with in posix.c
1438 Returns True if we have information regarding this lock region (and returns
1439 F_UNLCK in *ptype if the region is unlocked). False if the call failed.
1440 ****************************************************************************/
1442 bool fcntl_getlock(int fd, SMB_OFF_T *poffset, SMB_OFF_T *pcount, int *ptype, pid_t *ppid)
1444 SMB_STRUCT_FLOCK lock;
1447 DEBUG(8,("fcntl_getlock fd=%d offset=%.0f count=%.0f type=%d\n",
1448 fd,(double)*poffset,(double)*pcount,*ptype));
1450 lock.l_type = *ptype;
1451 lock.l_whence = SEEK_SET;
1452 lock.l_start = *poffset;
1453 lock.l_len = *pcount;
1456 ret = sys_fcntl_ptr(fd,SMB_F_GETLK,&lock);
1460 DEBUG(3,("fcntl_getlock: lock request failed at offset %.0f count %.0f type %d (%s)\n",
1461 (double)*poffset,(double)*pcount,*ptype,strerror(errno)));
1466 *ptype = lock.l_type;
1467 *poffset = lock.l_start;
1468 *pcount = lock.l_len;
1471 DEBUG(3,("fcntl_getlock: fd %d is returned info %d pid %u\n",
1472 fd, (int)lock.l_type, (unsigned int)lock.l_pid));
1477 #define DBGC_CLASS DBGC_ALL
1479 /*******************************************************************
1480 Is the name specified one of my netbios names.
1481 Returns true if it is equal, false otherwise.
1482 ********************************************************************/
1484 bool is_myname(const char *s)
1489 for (n=0; my_netbios_names(n); n++) {
1490 if (strequal(my_netbios_names(n), s)) {
1495 DEBUG(8, ("is_myname(\"%s\") returns %d\n", s, ret));
1499 /*******************************************************************
1500 Is the name specified our workgroup/domain.
1501 Returns true if it is equal, false otherwise.
1502 ********************************************************************/
1504 bool is_myworkgroup(const char *s)
1508 if (strequal(s, lp_workgroup())) {
1512 DEBUG(8, ("is_myworkgroup(\"%s\") returns %d\n", s, ret));
1516 /*******************************************************************
1517 we distinguish between 2K and XP by the "Native Lan Manager" string
1518 WinXP => "Windows 2002 5.1"
1519 WinXP 64bit => "Windows XP 5.2"
1520 Win2k => "Windows 2000 5.0"
1521 NT4 => "Windows NT 4.0"
1522 Win9x => "Windows 4.0"
1523 Windows 2003 doesn't set the native lan manager string but
1524 they do set the domain to "Windows 2003 5.2" (probably a bug).
1525 ********************************************************************/
1527 void ra_lanman_string( const char *native_lanman )
1529 if ( strcmp( native_lanman, "Windows 2002 5.1" ) == 0 )
1530 set_remote_arch( RA_WINXP );
1531 else if ( strcmp( native_lanman, "Windows XP 5.2" ) == 0 )
1532 set_remote_arch( RA_WINXP64 );
1533 else if ( strcmp( native_lanman, "Windows Server 2003 5.2" ) == 0 )
1534 set_remote_arch( RA_WIN2K3 );
1537 static const char *remote_arch_str;
1539 const char *get_remote_arch_str(void)
1541 if (!remote_arch_str) {
1544 return remote_arch_str;
1547 /*******************************************************************
1548 Set the horrid remote_arch string based on an enum.
1549 ********************************************************************/
1551 void set_remote_arch(enum remote_arch_types type)
1556 remote_arch_str = "WfWg";
1559 remote_arch_str = "OS2";
1562 remote_arch_str = "Win95";
1565 remote_arch_str = "WinNT";
1568 remote_arch_str = "Win2K";
1571 remote_arch_str = "WinXP";
1574 remote_arch_str = "WinXP64";
1577 remote_arch_str = "Win2K3";
1580 remote_arch_str = "Vista";
1583 remote_arch_str = "Samba";
1586 remote_arch_str = "CIFSFS";
1589 remote_arch_str = "OSX";
1592 ra_type = RA_UNKNOWN;
1593 remote_arch_str = "UNKNOWN";
1597 DEBUG(10,("set_remote_arch: Client arch is \'%s\'\n",
1601 /*******************************************************************
1602 Get the remote_arch type.
1603 ********************************************************************/
1605 enum remote_arch_types get_remote_arch(void)
1610 const char *tab_depth(int level, int depth)
1612 if( CHECK_DEBUGLVL(level) ) {
1613 dbgtext("%*s", depth*4, "");
1618 /*****************************************************************************
1619 Provide a checksum on a string
1621 Input: s - the null-terminated character string for which the checksum
1624 Output: The checksum value calculated for s.
1625 *****************************************************************************/
1627 int str_checksum(const char *s)
1629 TDB_DATA key = string_tdb_data(s);
1630 return tdb_jenkins_hash(&key);
1633 /*****************************************************************
1634 Zero a memory area then free it. Used to catch bugs faster.
1635 *****************************************************************/
1637 void zero_free(void *p, size_t size)
1643 /*****************************************************************
1644 Set our open file limit to a requested max and return the limit.
1645 *****************************************************************/
1647 int set_maxfiles(int requested_max)
1649 #if (defined(HAVE_GETRLIMIT) && defined(RLIMIT_NOFILE))
1651 int saved_current_limit;
1653 if(getrlimit(RLIMIT_NOFILE, &rlp)) {
1654 DEBUG(0,("set_maxfiles: getrlimit (1) for RLIMIT_NOFILE failed with error %s\n",
1657 return requested_max;
1661 * Set the fd limit to be real_max_open_files + MAX_OPEN_FUDGEFACTOR to
1662 * account for the extra fd we need
1663 * as well as the log files and standard
1664 * handles etc. Save the limit we want to set in case
1665 * we are running on an OS that doesn't support this limit (AIX)
1666 * which always returns RLIM_INFINITY for rlp.rlim_max.
1669 /* Try raising the hard (max) limit to the requested amount. */
1671 #if defined(RLIM_INFINITY)
1672 if (rlp.rlim_max != RLIM_INFINITY) {
1673 int orig_max = rlp.rlim_max;
1675 if ( rlp.rlim_max < requested_max )
1676 rlp.rlim_max = requested_max;
1678 /* This failing is not an error - many systems (Linux) don't
1679 support our default request of 10,000 open files. JRA. */
1681 if(setrlimit(RLIMIT_NOFILE, &rlp)) {
1682 DEBUG(3,("set_maxfiles: setrlimit for RLIMIT_NOFILE for %d max files failed with error %s\n",
1683 (int)rlp.rlim_max, strerror(errno) ));
1685 /* Set failed - restore original value from get. */
1686 rlp.rlim_max = orig_max;
1691 /* Now try setting the soft (current) limit. */
1693 saved_current_limit = rlp.rlim_cur = MIN(requested_max,rlp.rlim_max);
1695 if(setrlimit(RLIMIT_NOFILE, &rlp)) {
1696 DEBUG(0,("set_maxfiles: setrlimit for RLIMIT_NOFILE for %d files failed with error %s\n",
1697 (int)rlp.rlim_cur, strerror(errno) ));
1699 return saved_current_limit;
1702 if(getrlimit(RLIMIT_NOFILE, &rlp)) {
1703 DEBUG(0,("set_maxfiles: getrlimit (2) for RLIMIT_NOFILE failed with error %s\n",
1706 return saved_current_limit;
1709 #if defined(RLIM_INFINITY)
1710 if(rlp.rlim_cur == RLIM_INFINITY)
1711 return saved_current_limit;
1714 if((int)rlp.rlim_cur > saved_current_limit)
1715 return saved_current_limit;
1717 return rlp.rlim_cur;
1718 #else /* !defined(HAVE_GETRLIMIT) || !defined(RLIMIT_NOFILE) */
1720 * No way to know - just guess...
1722 return requested_max;
1726 /*****************************************************************
1727 malloc that aborts with smb_panic on fail or zero size.
1728 *****************************************************************/
1730 void *smb_xmalloc_array(size_t size, unsigned int count)
1734 smb_panic("smb_xmalloc_array: called with zero size");
1736 if (count >= MAX_ALLOC_SIZE/size) {
1737 smb_panic("smb_xmalloc_array: alloc size too large");
1739 if ((p = SMB_MALLOC(size*count)) == NULL) {
1740 DEBUG(0, ("smb_xmalloc_array failed to allocate %lu * %lu bytes\n",
1741 (unsigned long)size, (unsigned long)count));
1742 smb_panic("smb_xmalloc_array: malloc failed");
1748 vasprintf that aborts on malloc fail
1751 int smb_xvasprintf(char **ptr, const char *format, va_list ap)
1758 n = vasprintf(ptr, format, ap2);
1760 if (n == -1 || ! *ptr) {
1761 smb_panic("smb_xvasprintf: out of memory");
1766 /*****************************************************************
1767 Get local hostname and cache result.
1768 *****************************************************************/
1770 char *myhostname(void)
1774 ret = get_myname(NULL);
1780 * @brief Returns an absolute path to a file concatenating the provided
1781 * @a rootpath and @a basename
1783 * @param name Filename, relative to @a rootpath
1785 * @retval Pointer to a string containing the full path.
1788 static char *xx_path(const char *name, const char *rootpath)
1792 fname = talloc_strdup(talloc_tos(), rootpath);
1796 trim_string(fname,"","/");
1798 if (!directory_exist(fname)) {
1799 if (!mkdir(fname,0755))
1800 DEBUG(1, ("Unable to create directory %s for file %s. "
1801 "Error was %s\n", fname, name, strerror(errno)));
1804 return talloc_asprintf(talloc_tos(),
1811 * @brief Returns an absolute path to a file in the Samba lock directory.
1813 * @param name File to find, relative to LOCKDIR.
1815 * @retval Pointer to a talloc'ed string containing the full path.
1818 char *lock_path(const char *name)
1820 return xx_path(name, lp_lockdir());
1824 * @brief Returns an absolute path to a file in the Samba pid directory.
1826 * @param name File to find, relative to PIDDIR.
1828 * @retval Pointer to a talloc'ed string containing the full path.
1831 char *pid_path(const char *name)
1833 return xx_path(name, lp_piddir());
1837 * @brief Returns an absolute path to a file in the Samba lib directory.
1839 * @param name File to find, relative to LIBDIR.
1841 * @retval Pointer to a string containing the full path.
1844 char *lib_path(const char *name)
1846 return talloc_asprintf(talloc_tos(), "%s/%s", get_dyn_LIBDIR(), name);
1850 * @brief Returns an absolute path to a file in the Samba modules directory.
1852 * @param name File to find, relative to MODULESDIR.
1854 * @retval Pointer to a string containing the full path.
1857 char *modules_path(const char *name)
1859 return talloc_asprintf(talloc_tos(), "%s/%s", get_dyn_MODULESDIR(), name);
1863 * @brief Returns an absolute path to a file in the Samba data directory.
1865 * @param name File to find, relative to CODEPAGEDIR.
1867 * @retval Pointer to a talloc'ed string containing the full path.
1870 char *data_path(const char *name)
1872 return talloc_asprintf(talloc_tos(), "%s/%s", get_dyn_CODEPAGEDIR(), name);
1876 * @brief Returns an absolute path to a file in the Samba state directory.
1878 * @param name File to find, relative to STATEDIR.
1880 * @retval Pointer to a talloc'ed string containing the full path.
1883 char *state_path(const char *name)
1885 return xx_path(name, lp_statedir());
1889 * @brief Returns an absolute path to a file in the Samba cache directory.
1891 * @param name File to find, relative to CACHEDIR.
1893 * @retval Pointer to a talloc'ed string containing the full path.
1896 char *cache_path(const char *name)
1898 return xx_path(name, lp_cachedir());
1902 * @brief Returns the platform specific shared library extension.
1904 * @retval Pointer to a const char * containing the extension.
1907 const char *shlib_ext(void)
1909 return get_dyn_SHLIBEXT();
1912 /*******************************************************************
1913 Given a filename - get its directory name
1914 ********************************************************************/
1916 bool parent_dirname(TALLOC_CTX *mem_ctx, const char *dir, char **parent,
1922 p = strrchr_m(dir, '/'); /* Find final '/', if any */
1925 if (!(*parent = talloc_strdup(mem_ctx, "."))) {
1936 if (!(*parent = (char *)TALLOC_MEMDUP(mem_ctx, dir, len+1))) {
1939 (*parent)[len] = '\0';
1947 /*******************************************************************
1948 Determine if a pattern contains any Microsoft wildcard characters.
1949 *******************************************************************/
1951 bool ms_has_wild(const char *s)
1955 if (lp_posix_pathnames()) {
1956 /* With posix pathnames no characters are wild. */
1960 while ((c = *s++)) {
1973 bool ms_has_wild_w(const smb_ucs2_t *s)
1976 if (!s) return False;
1977 while ((c = *s++)) {
1979 case UCS2_CHAR('*'):
1980 case UCS2_CHAR('?'):
1981 case UCS2_CHAR('<'):
1982 case UCS2_CHAR('>'):
1983 case UCS2_CHAR('"'):
1990 /*******************************************************************
1991 A wrapper that handles case sensitivity and the special handling
1993 *******************************************************************/
1995 bool mask_match(const char *string, const char *pattern, bool is_case_sensitive)
1997 if (ISDOTDOT(string))
2002 return ms_fnmatch(pattern, string, Protocol <= PROTOCOL_LANMAN2, is_case_sensitive) == 0;
2005 /*******************************************************************
2006 A wrapper that handles case sensitivity and the special handling
2007 of the ".." name. Varient that is only called by old search code which requires
2008 pattern translation.
2009 *******************************************************************/
2011 bool mask_match_search(const char *string, const char *pattern, bool is_case_sensitive)
2013 if (ISDOTDOT(string))
2018 return ms_fnmatch(pattern, string, True, is_case_sensitive) == 0;
2021 /*******************************************************************
2022 A wrapper that handles a list of patters and calls mask_match()
2023 on each. Returns True if any of the patterns match.
2024 *******************************************************************/
2026 bool mask_match_list(const char *string, char **list, int listLen, bool is_case_sensitive)
2028 while (listLen-- > 0) {
2029 if (mask_match(string, *list++, is_case_sensitive))
2035 /*********************************************************
2036 Recursive routine that is called by unix_wild_match.
2037 *********************************************************/
2039 static bool unix_do_match(const char *regexp, const char *str)
2043 for( p = regexp; *p && *str; ) {
2054 * Look for a character matching
2055 * the one after the '*'.
2059 return true; /* Automatic match */
2062 while(*str && (*p != *str))
2066 * Patch from weidel@multichart.de. In the case of the regexp
2067 * '*XX*' we want to ensure there are at least 2 'X' characters
2068 * in the string after the '*' for a match to be made.
2075 * Eat all the characters that match, but count how many there were.
2078 while(*str && (*p == *str)) {
2084 * Now check that if the regexp had n identical characters that
2085 * matchcount had at least that many matches.
2088 while ( *(p+1) && (*(p+1) == *p)) {
2093 if ( matchcount <= 0 )
2097 str--; /* We've eaten the match char after the '*' */
2099 if(unix_do_match(p, str))
2121 if (!*p && str[0] == '.' && str[1] == 0)
2124 if (!*str && *p == '?') {
2130 if(!*str && (*p == '*' && p[1] == '\0'))
2136 /*******************************************************************
2137 Simple case insensitive interface to a UNIX wildcard matcher.
2138 Returns True if match, False if not.
2139 *******************************************************************/
2141 bool unix_wild_match(const char *pattern, const char *string)
2143 TALLOC_CTX *ctx = talloc_stackframe();
2149 p2 = talloc_strdup(ctx,pattern);
2150 s2 = talloc_strdup(ctx,string);
2158 /* Remove any *? and ** from the pattern as they are meaningless */
2159 for(p = p2; *p; p++) {
2160 while( *p == '*' && (p[1] == '?' ||p[1] == '*')) {
2161 memmove(&p[1], &p[2], strlen(&p[2])+1);
2165 if (strequal(p2,"*")) {
2170 ret = unix_do_match(p2, s2);
2175 /**********************************************************************
2176 Converts a name to a fully qualified domain name.
2177 Returns true if lookup succeeded, false if not (then fqdn is set to name)
2178 Note we deliberately use gethostbyname here, not getaddrinfo as we want
2179 to examine the h_aliases and I don't know how to do that with getaddrinfo.
2180 ***********************************************************************/
2182 bool name_to_fqdn(fstring fqdn, const char *name)
2185 struct hostent *hp = gethostbyname(name);
2187 if (!hp || !hp->h_name || !*hp->h_name) {
2188 DEBUG(10,("name_to_fqdn: lookup for %s failed.\n", name));
2189 fstrcpy(fqdn, name);
2193 /* Find out if the fqdn is returned as an alias
2194 * to cope with /etc/hosts files where the first
2195 * name is not the fqdn but the short name */
2196 if (hp->h_aliases && (! strchr_m(hp->h_name, '.'))) {
2198 for (i = 0; hp->h_aliases[i]; i++) {
2199 if (strchr_m(hp->h_aliases[i], '.')) {
2200 full = hp->h_aliases[i];
2205 if (full && (StrCaseCmp(full, "localhost.localdomain") == 0)) {
2206 DEBUG(1, ("WARNING: your /etc/hosts file may be broken!\n"));
2207 DEBUGADD(1, (" Specifing the machine hostname for address 127.0.0.1 may lead\n"));
2208 DEBUGADD(1, (" to Kerberos authentication problems as localhost.localdomain\n"));
2209 DEBUGADD(1, (" may end up being used instead of the real machine FQDN.\n"));
2216 DEBUG(10,("name_to_fqdn: lookup for %s -> %s.\n", name, full));
2217 fstrcpy(fqdn, full);
2221 /**********************************************************************
2222 Append a DATA_BLOB to a talloc'ed object
2223 ***********************************************************************/
2225 void *talloc_append_blob(TALLOC_CTX *mem_ctx, void *buf, DATA_BLOB blob)
2227 size_t old_size = 0;
2230 if (blob.length == 0) {
2235 old_size = talloc_get_size(buf);
2238 result = (char *)TALLOC_REALLOC(mem_ctx, buf, old_size + blob.length);
2239 if (result == NULL) {
2243 memcpy(result + old_size, blob.data, blob.length);
2247 uint32 map_share_mode_to_deny_mode(uint32 share_access, uint32 private_options)
2249 switch (share_access & ~FILE_SHARE_DELETE) {
2250 case FILE_SHARE_NONE:
2252 case FILE_SHARE_READ:
2254 case FILE_SHARE_WRITE:
2256 case FILE_SHARE_READ|FILE_SHARE_WRITE:
2259 if (private_options & NTCREATEX_OPTIONS_PRIVATE_DENY_DOS) {
2261 } else if (private_options & NTCREATEX_OPTIONS_PRIVATE_DENY_FCB) {
2268 pid_t procid_to_pid(const struct server_id *proc)
2273 static uint32 my_vnn = NONCLUSTER_VNN;
2275 void set_my_vnn(uint32 vnn)
2277 DEBUG(10, ("vnn pid %d = %u\n", (int)sys_getpid(), (unsigned int)vnn));
2281 uint32 get_my_vnn(void)
2286 static uint64_t my_unique_id = 0;
2288 void set_my_unique_id(uint64_t unique_id)
2290 my_unique_id = unique_id;
2293 struct server_id pid_to_procid(pid_t pid)
2295 struct server_id result;
2297 result.unique_id = my_unique_id;
2298 result.vnn = my_vnn;
2302 struct server_id procid_self(void)
2304 return pid_to_procid(sys_getpid());
2307 bool procid_equal(const struct server_id *p1, const struct server_id *p2)
2309 if (p1->pid != p2->pid)
2311 if (p1->vnn != p2->vnn)
2316 bool cluster_id_equal(const struct server_id *id1,
2317 const struct server_id *id2)
2319 return procid_equal(id1, id2);
2322 bool procid_is_me(const struct server_id *pid)
2324 if (pid->pid != sys_getpid())
2326 if (pid->vnn != my_vnn)
2331 struct server_id interpret_pid(const char *pid_string)
2333 struct server_id result;
2336 if (sscanf(pid_string, "%u:%d", &vnn, &pid) == 2) {
2340 else if (sscanf(pid_string, "%d", &pid) == 1) {
2341 result.vnn = get_my_vnn();
2345 result.vnn = NONCLUSTER_VNN;
2348 /* Assigning to result.pid may have overflowed
2349 Map negative pid to -1: i.e. error */
2350 if (result.pid < 0) {
2353 result.unique_id = 0;
2357 char *procid_str(TALLOC_CTX *mem_ctx, const struct server_id *pid)
2359 if (pid->vnn == NONCLUSTER_VNN) {
2360 return talloc_asprintf(mem_ctx,
2365 return talloc_asprintf(mem_ctx,
2372 char *procid_str_static(const struct server_id *pid)
2374 return procid_str(talloc_tos(), pid);
2377 bool procid_valid(const struct server_id *pid)
2379 return (pid->pid != -1);
2382 bool procid_is_local(const struct server_id *pid)
2384 return pid->vnn == my_vnn;
2387 /****************************************************************
2388 Check if offset/length fit into bufsize. Should probably be
2389 merged with is_offset_safe, but this would require a rewrite
2390 of lanman.c. Later :-)
2391 ****************************************************************/
2393 bool trans_oob(uint32_t bufsize, uint32_t offset, uint32_t length)
2395 if ((offset + length < offset) || (offset + length < length)) {
2399 if ((offset > bufsize) || (offset + length > bufsize)) {
2406 /****************************************************************
2407 Check if an offset into a buffer is safe.
2408 If this returns True it's safe to indirect into the byte at
2410 ****************************************************************/
2412 bool is_offset_safe(const char *buf_base, size_t buf_len, char *ptr, size_t off)
2414 const char *end_base = buf_base + buf_len;
2415 char *end_ptr = ptr + off;
2417 if (!buf_base || !ptr) {
2421 if (end_base < buf_base || end_ptr < ptr) {
2422 return False; /* wrap. */
2425 if (end_ptr < end_base) {
2431 /****************************************************************
2432 Return a safe pointer into a buffer, or NULL.
2433 ****************************************************************/
2435 char *get_safe_ptr(const char *buf_base, size_t buf_len, char *ptr, size_t off)
2437 return is_offset_safe(buf_base, buf_len, ptr, off) ?
2441 /****************************************************************
2442 Return a safe pointer into a string within a buffer, or NULL.
2443 ****************************************************************/
2445 char *get_safe_str_ptr(const char *buf_base, size_t buf_len, char *ptr, size_t off)
2447 if (!is_offset_safe(buf_base, buf_len, ptr, off)) {
2450 /* Check if a valid string exists at this offset. */
2451 if (skip_string(buf_base,buf_len, ptr + off) == NULL) {
2457 /****************************************************************
2458 Return an SVAL at a pointer, or failval if beyond the end.
2459 ****************************************************************/
2461 int get_safe_SVAL(const char *buf_base, size_t buf_len, char *ptr, size_t off, int failval)
2464 * Note we use off+1 here, not off+2 as SVAL accesses ptr[0] and ptr[1],
2467 if (!is_offset_safe(buf_base, buf_len, ptr, off+1)) {
2470 return SVAL(ptr,off);
2473 /****************************************************************
2474 Return an IVAL at a pointer, or failval if beyond the end.
2475 ****************************************************************/
2477 int get_safe_IVAL(const char *buf_base, size_t buf_len, char *ptr, size_t off, int failval)
2480 * Note we use off+3 here, not off+4 as IVAL accesses
2481 * ptr[0] ptr[1] ptr[2] ptr[3] NOT ptr[4].
2483 if (!is_offset_safe(buf_base, buf_len, ptr, off+3)) {
2486 return IVAL(ptr,off);
2489 /****************************************************************
2490 Split DOM\user into DOM and user. Do not mix with winbind variants of that
2491 call (they take care of winbind separator and other winbind specific settings).
2492 ****************************************************************/
2494 void split_domain_user(TALLOC_CTX *mem_ctx,
2495 const char *full_name,
2499 const char *p = NULL;
2501 p = strchr_m(full_name, '\\');
2504 *domain = talloc_strndup(mem_ctx, full_name,
2505 PTR_DIFF(p, full_name));
2506 *user = talloc_strdup(mem_ctx, p+1);
2508 *domain = talloc_strdup(mem_ctx, "");
2509 *user = talloc_strdup(mem_ctx, full_name);
2515 Disable these now we have checked all code paths and ensured
2516 NULL returns on zero request. JRA.
2518 /****************************************************************
2519 talloc wrapper functions that guarentee a null pointer return
2521 ****************************************************************/
2523 #ifndef MAX_TALLOC_SIZE
2524 #define MAX_TALLOC_SIZE 0x10000000
2528 * talloc and zero memory.
2529 * - returns NULL if size is zero.
2532 void *_talloc_zero_zeronull(const void *ctx, size_t size, const char *name)
2540 p = talloc_named_const(ctx, size, name);
2543 memset(p, '\0', size);
2550 * memdup with a talloc.
2551 * - returns NULL if size is zero.
2554 void *_talloc_memdup_zeronull(const void *t, const void *p, size_t size, const char *name)
2562 newp = talloc_named_const(t, size, name);
2564 memcpy(newp, p, size);
2571 * alloc an array, checking for integer overflow in the array size.
2572 * - returns NULL if count or el_size are zero.
2575 void *_talloc_array_zeronull(const void *ctx, size_t el_size, unsigned count, const char *name)
2577 if (count >= MAX_TALLOC_SIZE/el_size) {
2581 if (el_size == 0 || count == 0) {
2585 return talloc_named_const(ctx, el_size * count, name);
2589 * alloc an zero array, checking for integer overflow in the array size
2590 * - returns NULL if count or el_size are zero.
2593 void *_talloc_zero_array_zeronull(const void *ctx, size_t el_size, unsigned count, const char *name)
2595 if (count >= MAX_TALLOC_SIZE/el_size) {
2599 if (el_size == 0 || count == 0) {
2603 return _talloc_zero(ctx, el_size * count, name);
2607 * Talloc wrapper that returns NULL if size == 0.
2609 void *talloc_zeronull(const void *context, size_t size, const char *name)
2614 return talloc_named_const(context, size, name);
2618 /****************************************************************
2619 strip off leading '\\' from a hostname
2620 ****************************************************************/
2622 const char *strip_hostname(const char *s)
2628 if (strlen_m(s) < 3) {
2632 if (s[0] == '\\') s++;
2633 if (s[0] == '\\') s++;
2638 bool tevent_req_poll_ntstatus(struct tevent_req *req,
2639 struct tevent_context *ev,
2642 bool ret = tevent_req_poll(req, ev);
2644 *status = map_nt_error_from_unix(errno);
2649 bool any_nt_status_not_ok(NTSTATUS err1, NTSTATUS err2, NTSTATUS *result)
2651 if (!NT_STATUS_IS_OK(err1)) {
2655 if (!NT_STATUS_IS_OK(err2)) {
2662 int timeval_to_msec(struct timeval t)
2664 return t.tv_sec * 1000 + (t.tv_usec+999) / 1000;
2667 /*******************************************************************
2668 Check a given DOS pathname is valid for a share.
2669 ********************************************************************/
2671 char *valid_share_pathname(TALLOC_CTX *ctx, const char *dos_pathname)
2675 if (!dos_pathname) {
2679 ptr = talloc_strdup(ctx, dos_pathname);
2683 /* Convert any '\' paths to '/' */
2685 ptr = unix_clean_name(ctx, ptr);
2690 /* NT is braindead - it wants a C: prefix to a pathname ! So strip it. */
2691 if (strlen(ptr) > 2 && ptr[1] == ':' && ptr[0] != '/')
2694 /* Only absolute paths allowed. */