2 Unix SMB/CIFS implementation.
3 Samba utility functions
4 Copyright (C) Andrew Tridgell 1992-1998
5 Copyright (C) Jeremy Allison 2001-2002
6 Copyright (C) Simo Sorce 2001
7 Copyright (C) Jim McDonough <jmcd@us.ibm.com> 2003
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
26 extern fstring local_machine;
27 extern char *global_clobber_region_function;
28 extern unsigned int global_clobber_region_line;
29 extern fstring remote_arch;
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 enum protocol_types Protocol = PROTOCOL_COREPLUS;
62 /* a default finfo structure to ensure all fields are sensible */
63 file_info def_finfo = {-1,0,0,0,0,0,0,"",""};
65 /* this is used by the chaining code */
70 static enum remote_arch_types ra_type = RA_UNKNOWN;
71 pstring user_socket_options=DEFAULT_SOCKET_OPTIONS;
73 /***********************************************************************
74 Definitions for all names.
75 ***********************************************************************/
77 static char *smb_myname;
78 static char *smb_myworkgroup;
79 static char *smb_scope;
80 static int smb_num_netbios_names;
81 static char **smb_my_netbios_names;
83 /***********************************************************************
84 Allocate and set myname. Ensure upper case.
85 ***********************************************************************/
87 BOOL set_global_myname(const char *myname)
89 SAFE_FREE(smb_myname);
90 smb_myname = SMB_STRDUP(myname);
93 strupper_m(smb_myname);
97 const char *global_myname(void)
102 /***********************************************************************
103 Allocate and set myworkgroup. Ensure upper case.
104 ***********************************************************************/
106 BOOL set_global_myworkgroup(const char *myworkgroup)
108 SAFE_FREE(smb_myworkgroup);
109 smb_myworkgroup = SMB_STRDUP(myworkgroup);
110 if (!smb_myworkgroup)
112 strupper_m(smb_myworkgroup);
116 const char *lp_workgroup(void)
118 return smb_myworkgroup;
121 /***********************************************************************
122 Allocate and set scope. Ensure upper case.
123 ***********************************************************************/
125 BOOL set_global_scope(const char *scope)
127 SAFE_FREE(smb_scope);
128 smb_scope = SMB_STRDUP(scope);
131 strupper_m(smb_scope);
135 /*********************************************************************
136 Ensure scope is never null string.
137 *********************************************************************/
139 const char *global_scope(void)
142 set_global_scope("");
146 static void free_netbios_names_array(void)
150 for (i = 0; i < smb_num_netbios_names; i++)
151 SAFE_FREE(smb_my_netbios_names[i]);
153 SAFE_FREE(smb_my_netbios_names);
154 smb_num_netbios_names = 0;
157 static BOOL allocate_my_netbios_names_array(size_t number)
159 free_netbios_names_array();
161 smb_num_netbios_names = number + 1;
162 smb_my_netbios_names = SMB_MALLOC_ARRAY( char *, smb_num_netbios_names );
164 if (!smb_my_netbios_names)
167 memset(smb_my_netbios_names, '\0', sizeof(char *) * smb_num_netbios_names);
171 static BOOL set_my_netbios_names(const char *name, int i)
173 SAFE_FREE(smb_my_netbios_names[i]);
175 smb_my_netbios_names[i] = SMB_STRDUP(name);
176 if (!smb_my_netbios_names[i])
178 strupper_m(smb_my_netbios_names[i]);
182 const char *my_netbios_names(int i)
184 return smb_my_netbios_names[i];
187 BOOL set_netbios_aliases(const char **str_array)
191 /* Work out the max number of netbios aliases that we have */
192 for( namecount=0; str_array && (str_array[namecount] != NULL); namecount++ )
195 if ( global_myname() && *global_myname())
198 /* Allocate space for the netbios aliases */
199 if (!allocate_my_netbios_names_array(namecount))
202 /* Use the global_myname string first */
204 if ( global_myname() && *global_myname()) {
205 set_my_netbios_names( global_myname(), namecount );
211 for ( i = 0; str_array[i] != NULL; i++) {
213 BOOL duplicate = False;
215 /* Look for duplicates */
216 for( n=0; n<namecount; n++ ) {
217 if( strequal( str_array[i], my_netbios_names(n) ) ) {
223 if (!set_my_netbios_names(str_array[i], namecount))
232 /****************************************************************************
233 Common name initialization code.
234 ****************************************************************************/
236 BOOL init_names(void)
241 if (global_myname() == NULL || *global_myname() == '\0') {
242 if (!set_global_myname(myhostname())) {
243 DEBUG( 0, ( "init_structs: malloc fail.\n" ) );
248 if (!set_netbios_aliases(lp_netbios_aliases())) {
249 DEBUG( 0, ( "init_structs: malloc fail.\n" ) );
253 fstrcpy( local_machine, global_myname() );
254 trim_char( local_machine, ' ', ' ' );
255 p = strchr( local_machine, ' ' );
258 strlower_m( local_machine );
260 DEBUG( 5, ("Netbios name list:-\n") );
261 for( n=0; my_netbios_names(n); n++ )
262 DEBUGADD( 5, ( "my_netbios_names[%d]=\"%s\"\n", n, my_netbios_names(n) ) );
267 /**************************************************************************n
268 Find a suitable temporary directory. The result should be copied immediately
269 as it may be overwritten by a subsequent call.
270 ****************************************************************************/
272 const char *tmpdir(void)
275 if ((p = getenv("TMPDIR")))
280 /****************************************************************************
281 Add a gid to an array of gids if it's not already there.
282 ****************************************************************************/
284 void add_gid_to_array_unique(TALLOC_CTX *mem_ctx, gid_t gid,
285 gid_t **gids, int *num)
289 for (i=0; i<*num; i++) {
290 if ((*gids)[i] == gid)
295 *gids = TALLOC_REALLOC_ARRAY(mem_ctx, *gids, gid_t, *num+1);
297 *gids = SMB_REALLOC_ARRAY(*gids, gid_t, *num+1);
306 /****************************************************************************
307 Like atoi but gets the value up to the separator character.
308 ****************************************************************************/
310 static const char *Atoic(const char *p, int *n, const char *c)
312 if (!isdigit((int)*p)) {
313 DEBUG(5, ("Atoic: malformed number\n"));
319 while ((*p) && isdigit((int)*p))
322 if (strchr_m(c, *p) == NULL) {
323 DEBUG(5, ("Atoic: no separator characters (%s) not found\n", c));
330 /*************************************************************************
331 Reads a list of numbers.
332 *************************************************************************/
334 const char *get_numlist(const char *p, uint32 **num, int *count)
338 if (num == NULL || count == NULL)
344 while ((p = Atoic(p, &val, ":,")) != NULL && (*p) != ':') {
347 tn = SMB_REALLOC_ARRAY((*num), uint32, (*count)+1);
353 (*num)[(*count)] = val;
361 /*******************************************************************
362 Check if a file exists - call vfs_file_exist for samba files.
363 ********************************************************************/
365 BOOL file_exist(const char *fname,SMB_STRUCT_STAT *sbuf)
371 if (sys_stat(fname,sbuf) != 0)
374 return((S_ISREG(sbuf->st_mode)) || (S_ISFIFO(sbuf->st_mode)));
377 /*******************************************************************
378 Check a files mod time.
379 ********************************************************************/
381 time_t file_modtime(const char *fname)
385 if (sys_stat(fname,&st) != 0)
391 /*******************************************************************
392 Check if a directory exists.
393 ********************************************************************/
395 BOOL directory_exist(char *dname,SMB_STRUCT_STAT *st)
403 if (sys_stat(dname,st) != 0)
406 ret = S_ISDIR(st->st_mode);
412 /*******************************************************************
413 Returns the size in bytes of the named file.
414 ********************************************************************/
416 SMB_OFF_T get_file_size(char *file_name)
420 if(sys_stat(file_name,&buf) != 0)
421 return (SMB_OFF_T)-1;
425 /*******************************************************************
426 Return a string representing an attribute for a file.
427 ********************************************************************/
429 char *attrib_string(uint16 mode)
431 static fstring attrstr;
435 if (mode & aVOLID) fstrcat(attrstr,"V");
436 if (mode & aDIR) fstrcat(attrstr,"D");
437 if (mode & aARCH) fstrcat(attrstr,"A");
438 if (mode & aHIDDEN) fstrcat(attrstr,"H");
439 if (mode & aSYSTEM) fstrcat(attrstr,"S");
440 if (mode & aRONLY) fstrcat(attrstr,"R");
445 /*******************************************************************
446 Show a smb message structure.
447 ********************************************************************/
449 void show_msg(char *buf)
457 DEBUG(5,("size=%d\nsmb_com=0x%x\nsmb_rcls=%d\nsmb_reh=%d\nsmb_err=%d\nsmb_flg=%d\nsmb_flg2=%d\n",
459 (int)CVAL(buf,smb_com),
460 (int)CVAL(buf,smb_rcls),
461 (int)CVAL(buf,smb_reh),
462 (int)SVAL(buf,smb_err),
463 (int)CVAL(buf,smb_flg),
464 (int)SVAL(buf,smb_flg2)));
465 DEBUGADD(5,("smb_tid=%d\nsmb_pid=%d\nsmb_uid=%d\nsmb_mid=%d\n",
466 (int)SVAL(buf,smb_tid),
467 (int)SVAL(buf,smb_pid),
468 (int)SVAL(buf,smb_uid),
469 (int)SVAL(buf,smb_mid)));
470 DEBUGADD(5,("smt_wct=%d\n",(int)CVAL(buf,smb_wct)));
472 for (i=0;i<(int)CVAL(buf,smb_wct);i++)
473 DEBUGADD(5,("smb_vwv[%2d]=%5d (0x%X)\n",i,
474 SVAL(buf,smb_vwv+2*i),SVAL(buf,smb_vwv+2*i)));
476 bcc = (int)SVAL(buf,smb_vwv+2*(CVAL(buf,smb_wct)));
478 DEBUGADD(5,("smb_bcc=%d\n",bcc));
486 dump_data(10, smb_buf(buf), bcc);
489 /*******************************************************************
490 Set the length and marker of an smb packet.
491 ********************************************************************/
493 void smb_setlen(char *buf,int len)
495 _smb_setlen(buf,len);
503 /*******************************************************************
504 Setup the word count and byte count for a smb message.
505 ********************************************************************/
507 int set_message(char *buf,int num_words,int num_bytes,BOOL zero)
510 memset(buf + smb_size,'\0',num_words*2 + num_bytes);
511 SCVAL(buf,smb_wct,num_words);
512 SSVAL(buf,smb_vwv + num_words*SIZEOFWORD,num_bytes);
513 smb_setlen(buf,smb_size + num_words*2 + num_bytes - 4);
514 return (smb_size + num_words*2 + num_bytes);
517 /*******************************************************************
518 Setup only the byte count for a smb message.
519 ********************************************************************/
521 int set_message_bcc(char *buf,int num_bytes)
523 int num_words = CVAL(buf,smb_wct);
524 SSVAL(buf,smb_vwv + num_words*SIZEOFWORD,num_bytes);
525 smb_setlen(buf,smb_size + num_words*2 + num_bytes - 4);
526 return (smb_size + num_words*2 + num_bytes);
529 /*******************************************************************
530 Setup only the byte count for a smb message, using the end of the
532 ********************************************************************/
534 int set_message_end(void *outbuf,void *end_ptr)
536 return set_message_bcc((char *)outbuf,PTR_DIFF(end_ptr,smb_buf((char *)outbuf)));
539 /*******************************************************************
540 Reduce a file name, removing .. elements.
541 ********************************************************************/
543 void dos_clean_name(char *s)
547 DEBUG(3,("dos_clean_name [%s]\n",s));
549 /* remove any double slashes */
550 all_string_sub(s, "\\\\", "\\", 0);
552 while ((p = strstr_m(s,"\\..\\")) != NULL) {
558 if ((p=strrchr_m(s,'\\')) != NULL)
565 trim_string(s,NULL,"\\..");
567 all_string_sub(s, "\\.\\", "\\", 0);
570 /*******************************************************************
571 Reduce a file name, removing .. elements.
572 ********************************************************************/
574 void unix_clean_name(char *s)
578 DEBUG(3,("unix_clean_name [%s]\n",s));
580 /* remove any double slashes */
581 all_string_sub(s, "//","/", 0);
583 /* Remove leading ./ characters */
584 if(strncmp(s, "./", 2) == 0) {
585 trim_string(s, "./", NULL);
590 while ((p = strstr_m(s,"/../")) != NULL) {
596 if ((p=strrchr_m(s,'/')) != NULL)
603 trim_string(s,NULL,"/..");
606 /****************************************************************************
608 ****************************************************************************/
610 void make_dir_struct(char *buf, const char *mask, const char *fname,SMB_OFF_T size,int mode,time_t date, BOOL uc)
617 if ((mode & aDIR) != 0)
620 memset(buf+1,' ',11);
621 if ((p = strchr_m(mask2,'.')) != NULL) {
623 push_ascii(buf+1,mask2,8, 0);
624 push_ascii(buf+9,p+1,3, 0);
627 push_ascii(buf+1,mask2,11, 0);
629 memset(buf+21,'\0',DIR_STRUCT_SIZE-21);
631 put_dos_date(buf,22,date);
632 SSVAL(buf,26,size & 0xFFFF);
633 SSVAL(buf,28,(size >> 16)&0xFFFF);
634 /* We only uppercase if FLAGS2_LONG_PATH_COMPONENTS is zero in the input buf.
635 Strange, but verified on W2K3. Needed for OS/2. JRA. */
636 push_ascii(buf+30,fname,12, uc ? STR_UPPER : 0);
637 DEBUG(8,("put name [%s] from [%s] into dir struct\n",buf+30, fname));
640 /*******************************************************************
641 Close the low 3 fd's and open dev/null in their place.
642 ********************************************************************/
644 void close_low_fds(BOOL stderr_too)
656 /* try and use up these file descriptors, so silly
657 library routines writing to stdout etc won't cause havoc */
659 if (i == 2 && !stderr_too)
662 fd = sys_open("/dev/null",O_RDWR,0);
664 fd = sys_open("/dev/null",O_WRONLY,0);
666 DEBUG(0,("Can't open /dev/null\n"));
670 DEBUG(0,("Didn't get file descriptor %d\n",i));
677 /****************************************************************************
678 Set a fd into blocking/nonblocking mode. Uses POSIX O_NONBLOCK if available,
682 ****************************************************************************/
684 int set_blocking(int fd, BOOL set)
688 #define FLAG_TO_SET O_NONBLOCK
691 #define FLAG_TO_SET O_NDELAY
693 #define FLAG_TO_SET FNDELAY
697 if((val = sys_fcntl_long(fd, F_GETFL, 0)) == -1)
699 if(set) /* Turn blocking on - ie. clear nonblock flag */
703 return sys_fcntl_long( fd, F_SETFL, val);
707 /****************************************************************************
708 Transfer some data between two fd's.
709 ****************************************************************************/
711 #ifndef TRANSFER_BUF_SIZE
712 #define TRANSFER_BUF_SIZE 65536
715 ssize_t transfer_file_internal(int infd, int outfd, size_t n, ssize_t (*read_fn)(int, void *, size_t),
716 ssize_t (*write_fn)(int, const void *, size_t))
722 size_t num_to_read_thistime;
723 size_t num_written = 0;
725 if ((buf = SMB_MALLOC(TRANSFER_BUF_SIZE)) == NULL)
729 num_to_read_thistime = MIN((n - total), TRANSFER_BUF_SIZE);
731 read_ret = (*read_fn)(infd, buf, num_to_read_thistime);
732 if (read_ret == -1) {
733 DEBUG(0,("transfer_file_internal: read failure. Error = %s\n", strerror(errno) ));
742 while (num_written < read_ret) {
743 write_ret = (*write_fn)(outfd,buf + num_written, read_ret - num_written);
745 if (write_ret == -1) {
746 DEBUG(0,("transfer_file_internal: write failure. Error = %s\n", strerror(errno) ));
751 return (ssize_t)total;
753 num_written += (size_t)write_ret;
756 total += (size_t)read_ret;
760 return (ssize_t)total;
763 SMB_OFF_T transfer_file(int infd,int outfd,SMB_OFF_T n)
765 return (SMB_OFF_T)transfer_file_internal(infd, outfd, (size_t)n, sys_read, sys_write);
768 /*******************************************************************
769 Sleep for a specified number of milliseconds.
770 ********************************************************************/
772 void smb_msleep(unsigned int t)
774 #if defined(HAVE_NANOSLEEP)
775 struct timespec tval;
778 tval.tv_sec = t/1000;
779 tval.tv_nsec = 1000000*(t%1000);
783 ret = nanosleep(&tval, &tval);
784 } while (ret < 0 && errno == EINTR && (tval.tv_sec > 0 || tval.tv_nsec > 0));
786 unsigned int tdiff=0;
787 struct timeval tval,t1,t2;
794 tval.tv_sec = (t-tdiff)/1000;
795 tval.tv_usec = 1000*((t-tdiff)%1000);
797 /* Never wait for more than 1 sec. */
798 if (tval.tv_sec > 1) {
805 sys_select_intr(0,&fds,NULL,NULL,&tval);
808 if (t2.tv_sec < t1.tv_sec) {
809 /* Someone adjusted time... */
813 tdiff = TvalDiff(&t1,&t2);
818 /****************************************************************************
819 Become a daemon, discarding the controlling terminal.
820 ****************************************************************************/
822 void become_daemon(BOOL Fork)
830 /* detach from the terminal */
833 #elif defined(TIOCNOTTY)
835 int i = sys_open("/dev/tty", O_RDWR, 0);
837 ioctl(i, (int) TIOCNOTTY, (char *)0);
841 #endif /* HAVE_SETSID */
843 /* Close fd's 0,1,2. Needed if started by rsh */
844 close_low_fds(False); /* Don't close stderr, let the debug system
845 attach it to the logfile */
848 /****************************************************************************
849 Put up a yes/no prompt.
850 ****************************************************************************/
857 if (!fgets(ans,sizeof(ans)-1,stdin))
860 if (*ans == 'y' || *ans == 'Y')
866 #if defined(PARANOID_MALLOC_CHECKER)
868 /****************************************************************************
869 Internal malloc wrapper. Externally visible.
870 ****************************************************************************/
872 void *malloc_(size_t size)
876 #define malloc(s) __ERROR_DONT_USE_MALLOC_DIRECTLY
879 /****************************************************************************
880 Internal calloc wrapper. Not externally visible.
881 ****************************************************************************/
883 static void *calloc_(size_t count, size_t size)
886 return calloc(count, size);
887 #define calloc(n,s) __ERROR_DONT_USE_CALLOC_DIRECTLY
890 /****************************************************************************
891 Internal realloc wrapper. Not externally visible.
892 ****************************************************************************/
894 static void *realloc_(void *ptr, size_t size)
897 return realloc(ptr, size);
898 #define realloc(p,s) __ERROR_DONT_USE_RELLOC_DIRECTLY
901 #endif /* PARANOID_MALLOC_CHECKER */
903 /****************************************************************************
905 ****************************************************************************/
907 void *malloc_array(size_t el_size, unsigned int count)
909 if (count >= MAX_ALLOC_SIZE/el_size) {
913 #if defined(PARANOID_MALLOC_CHECKER)
914 return malloc_(el_size*count);
916 return malloc(el_size*count);
920 /****************************************************************************
922 ****************************************************************************/
924 void *calloc_array(size_t size, size_t nmemb)
926 if (nmemb >= MAX_ALLOC_SIZE/size) {
929 #if defined(PARANOID_MALLOC_CHECKER)
930 return calloc_(nmemb, size);
932 return calloc(nmemb, size);
936 /****************************************************************************
937 Expand a pointer to be a particular size.
938 ****************************************************************************/
940 void *Realloc(void *p,size_t size)
946 DEBUG(5,("Realloc asked for 0 bytes\n"));
950 #if defined(PARANOID_MALLOC_CHECKER)
952 ret = (void *)malloc_(size);
954 ret = (void *)realloc_(p,size);
957 ret = (void *)malloc(size);
959 ret = (void *)realloc(p,size);
963 DEBUG(0,("Memory allocation error: failed to expand to %d bytes\n",(int)size));
968 /****************************************************************************
970 ****************************************************************************/
972 void *realloc_array(void *p,size_t el_size, unsigned int count)
974 if (count >= MAX_ALLOC_SIZE/el_size) {
977 return Realloc(p,el_size*count);
980 /****************************************************************************
981 (Hopefully) efficient array append
982 ****************************************************************************/
983 void add_to_large_array(TALLOC_CTX *mem_ctx, size_t element_size,
984 void *element, void **array, uint32 *num_elements,
990 if (*array == NULL) {
991 if (*array_size == 0) {
995 if (*array_size >= MAX_ALLOC_SIZE/element_size) {
1000 *array = TALLOC(mem_ctx, element_size * (*array_size));
1002 *array = SMB_MALLOC(element_size * (*array_size));
1008 if (*num_elements == *array_size) {
1011 if (*array_size >= MAX_ALLOC_SIZE/element_size) {
1015 if (mem_ctx != NULL)
1016 *array = TALLOC_REALLOC(mem_ctx, *array,
1017 element_size * (*array_size));
1019 *array = SMB_REALLOC(*array,
1020 element_size * (*array_size));
1026 memcpy((char *)(*array) + element_size*(*num_elements),
1027 element, element_size);
1037 /****************************************************************************
1038 Free memory, checks for NULL.
1039 Use directly SAFE_FREE()
1040 Exists only because we need to pass a function pointer somewhere --SSS
1041 ****************************************************************************/
1043 void safe_free(void *p)
1048 /****************************************************************************
1049 Get my own name and IP.
1050 ****************************************************************************/
1052 BOOL get_myname(char *my_name)
1058 /* get my host name */
1059 if (gethostname(hostname, sizeof(hostname)) == -1) {
1060 DEBUG(0,("gethostname failed\n"));
1064 /* Ensure null termination. */
1065 hostname[sizeof(hostname)-1] = '\0';
1068 /* split off any parts after an initial . */
1069 char *p = strchr_m(hostname,'.');
1074 fstrcpy(my_name,hostname);
1080 /****************************************************************************
1081 Get my own canonical name, including domain.
1082 ****************************************************************************/
1084 BOOL get_mydnsfullname(fstring my_dnsname)
1086 static fstring dnshostname;
1089 if (!*dnshostname) {
1090 /* get my host name */
1091 if (gethostname(dnshostname, sizeof(dnshostname)) == -1) {
1092 *dnshostname = '\0';
1093 DEBUG(0,("gethostname failed\n"));
1097 /* Ensure null termination. */
1098 dnshostname[sizeof(dnshostname)-1] = '\0';
1100 /* Ensure we get the cannonical name. */
1101 if (!(hp = sys_gethostbyname(dnshostname))) {
1102 *dnshostname = '\0';
1105 fstrcpy(dnshostname, hp->h_name);
1107 fstrcpy(my_dnsname, dnshostname);
1111 /****************************************************************************
1112 Get my own domain name.
1113 ****************************************************************************/
1115 BOOL get_mydnsdomname(fstring my_domname)
1121 if (!get_mydnsfullname(domname)) {
1124 p = strchr_m(domname, '.');
1127 fstrcpy(my_domname, p);
1133 /****************************************************************************
1134 Interpret a protocol description string, with a default.
1135 ****************************************************************************/
1137 int interpret_protocol(const char *str,int def)
1139 if (strequal(str,"NT1"))
1140 return(PROTOCOL_NT1);
1141 if (strequal(str,"LANMAN2"))
1142 return(PROTOCOL_LANMAN2);
1143 if (strequal(str,"LANMAN1"))
1144 return(PROTOCOL_LANMAN1);
1145 if (strequal(str,"CORE"))
1146 return(PROTOCOL_CORE);
1147 if (strequal(str,"COREPLUS"))
1148 return(PROTOCOL_COREPLUS);
1149 if (strequal(str,"CORE+"))
1150 return(PROTOCOL_COREPLUS);
1152 DEBUG(0,("Unrecognised protocol level %s\n",str));
1157 /****************************************************************************
1158 Return true if a string could be a pure IP address.
1159 ****************************************************************************/
1161 BOOL is_ipaddress(const char *str)
1163 BOOL pure_address = True;
1166 for (i=0; pure_address && str[i]; i++)
1167 if (!(isdigit((int)str[i]) || str[i] == '.'))
1168 pure_address = False;
1170 /* Check that a pure number is not misinterpreted as an IP */
1171 pure_address = pure_address && (strchr_m(str, '.') != NULL);
1173 return pure_address;
1176 /****************************************************************************
1177 Interpret an internet address or name into an IP address in 4 byte form.
1178 ****************************************************************************/
1180 uint32 interpret_addr(const char *str)
1185 if (strcmp(str,"0.0.0.0") == 0)
1187 if (strcmp(str,"255.255.255.255") == 0)
1190 /* if it's in the form of an IP address then get the lib to interpret it */
1191 if (is_ipaddress(str)) {
1192 res = inet_addr(str);
1194 /* otherwise assume it's a network name of some sort and use
1195 sys_gethostbyname */
1196 if ((hp = sys_gethostbyname(str)) == 0) {
1197 DEBUG(3,("sys_gethostbyname: Unknown host. %s\n",str));
1201 if(hp->h_addr == NULL) {
1202 DEBUG(3,("sys_gethostbyname: host address is invalid for host %s\n",str));
1205 putip((char *)&res,(char *)hp->h_addr);
1208 if (res == (uint32)-1)
1214 /*******************************************************************
1215 A convenient addition to interpret_addr().
1216 ******************************************************************/
1218 struct in_addr *interpret_addr2(const char *str)
1220 static struct in_addr ret;
1221 uint32 a = interpret_addr(str);
1226 /*******************************************************************
1227 Check if an IP is the 0.0.0.0.
1228 ******************************************************************/
1230 BOOL is_zero_ip(struct in_addr ip)
1233 putip((char *)&a,(char *)&ip);
1237 /*******************************************************************
1238 Set an IP to 0.0.0.0.
1239 ******************************************************************/
1241 void zero_ip(struct in_addr *ip)
1244 static struct in_addr ipzero;
1247 ipzero = *interpret_addr2("0.0.0.0");
1254 #if (defined(HAVE_NETGROUP) && defined(WITH_AUTOMOUNT))
1255 /******************************************************************
1256 Remove any mount options such as -rsize=2048,wsize=2048 etc.
1257 Based on a fix from <Thomas.Hepper@icem.de>.
1258 *******************************************************************/
1260 static void strip_mount_options( pstring *str)
1264 while(*p && !isspace(*p))
1266 while(*p && isspace(*p))
1271 pstrcpy(tmp_str, p);
1272 pstrcpy(*str, tmp_str);
1277 /*******************************************************************
1278 Patch from jkf@soton.ac.uk
1279 Split Luke's automount_server into YP lookup and string splitter
1280 so can easily implement automount_path().
1281 As we may end up doing both, cache the last YP result.
1282 *******************************************************************/
1284 #ifdef WITH_NISPLUS_HOME
1285 char *automount_lookup( char *user_name)
1287 static fstring last_key = "";
1288 static pstring last_value = "";
1290 char *nis_map = (char *)lp_nis_home_map_name();
1292 char buffer[NIS_MAXATTRVAL + 1];
1297 if (strcmp(user_name, last_key)) {
1298 slprintf(buffer, sizeof(buffer)-1, "[key=%s],%s", user_name, nis_map);
1299 DEBUG(5, ("NIS+ querystring: %s\n", buffer));
1301 if (result = nis_list(buffer, FOLLOW_PATH|EXPAND_NAME|HARD_LOOKUP, NULL, NULL)) {
1302 if (result->status != NIS_SUCCESS) {
1303 DEBUG(3, ("NIS+ query failed: %s\n", nis_sperrno(result->status)));
1304 fstrcpy(last_key, ""); pstrcpy(last_value, "");
1306 object = result->objects.objects_val;
1307 if (object->zo_data.zo_type == ENTRY_OBJ) {
1308 entry = &object->zo_data.objdata_u.en_data;
1309 DEBUG(5, ("NIS+ entry type: %s\n", entry->en_type));
1310 DEBUG(3, ("NIS+ result: %s\n", entry->en_cols.en_cols_val[1].ec_value.ec_value_val));
1312 pstrcpy(last_value, entry->en_cols.en_cols_val[1].ec_value.ec_value_val);
1313 pstring_sub(last_value, "&", user_name);
1314 fstrcpy(last_key, user_name);
1318 nis_freeresult(result);
1321 strip_mount_options(&last_value);
1323 DEBUG(4, ("NIS+ Lookup: %s resulted in %s\n", user_name, last_value));
1326 #else /* WITH_NISPLUS_HOME */
1328 char *automount_lookup( char *user_name)
1330 static fstring last_key = "";
1331 static pstring last_value = "";
1333 int nis_error; /* returned by yp all functions */
1334 char *nis_result; /* yp_match inits this */
1335 int nis_result_len; /* and set this */
1336 char *nis_domain; /* yp_get_default_domain inits this */
1337 char *nis_map = (char *)lp_nis_home_map_name();
1339 if ((nis_error = yp_get_default_domain(&nis_domain)) != 0) {
1340 DEBUG(3, ("YP Error: %s\n", yperr_string(nis_error)));
1344 DEBUG(5, ("NIS Domain: %s\n", nis_domain));
1346 if (!strcmp(user_name, last_key)) {
1347 nis_result = last_value;
1348 nis_result_len = strlen(last_value);
1351 if ((nis_error = yp_match(nis_domain, nis_map, user_name, strlen(user_name),
1352 &nis_result, &nis_result_len)) == 0) {
1353 if (!nis_error && nis_result_len >= sizeof(pstring)) {
1354 nis_result_len = sizeof(pstring)-1;
1356 fstrcpy(last_key, user_name);
1357 strncpy(last_value, nis_result, nis_result_len);
1358 last_value[nis_result_len] = '\0';
1359 strip_mount_options(&last_value);
1361 } else if(nis_error == YPERR_KEY) {
1363 /* If Key lookup fails user home server is not in nis_map
1364 use default information for server, and home directory */
1366 DEBUG(3, ("YP Key not found: while looking up \"%s\" in map \"%s\"\n",
1367 user_name, nis_map));
1368 DEBUG(3, ("using defaults for server and home directory\n"));
1370 DEBUG(3, ("YP Error: \"%s\" while looking up \"%s\" in map \"%s\"\n",
1371 yperr_string(nis_error), user_name, nis_map));
1375 DEBUG(4, ("YP Lookup: %s resulted in %s\n", user_name, last_value));
1378 #endif /* WITH_NISPLUS_HOME */
1381 /*******************************************************************
1382 Are two IPs on the same subnet?
1383 ********************************************************************/
1385 BOOL same_net(struct in_addr ip1,struct in_addr ip2,struct in_addr mask)
1387 uint32 net1,net2,nmask;
1389 nmask = ntohl(mask.s_addr);
1390 net1 = ntohl(ip1.s_addr);
1391 net2 = ntohl(ip2.s_addr);
1393 return((net1 & nmask) == (net2 & nmask));
1397 /****************************************************************************
1398 Check if a process exists. Does this work on all unixes?
1399 ****************************************************************************/
1401 BOOL process_exists(pid_t pid)
1403 /* Doing kill with a non-positive pid causes messages to be
1404 * sent to places we don't want. */
1405 SMB_ASSERT(pid > 0);
1406 return(kill(pid,0) == 0 || errno != ESRCH);
1409 /*******************************************************************
1410 Convert a uid into a user name.
1411 ********************************************************************/
1413 const char *uidtoname(uid_t uid)
1415 static fstring name;
1416 struct passwd *pass;
1418 pass = getpwuid_alloc(uid);
1420 fstrcpy(name, pass->pw_name);
1423 slprintf(name, sizeof(name) - 1, "%ld",(long int)uid);
1429 /*******************************************************************
1430 Convert a gid into a group name.
1431 ********************************************************************/
1433 char *gidtoname(gid_t gid)
1435 static fstring name;
1438 grp = getgrgid(gid);
1440 return(grp->gr_name);
1441 slprintf(name,sizeof(name) - 1, "%d",(int)gid);
1445 /*******************************************************************
1446 Convert a user name into a uid.
1447 ********************************************************************/
1449 uid_t nametouid(const char *name)
1451 struct passwd *pass;
1455 pass = getpwnam_alloc(name);
1462 u = (uid_t)strtol(name, &p, 0);
1463 if ((p != name) && (*p == '\0'))
1469 /*******************************************************************
1470 Convert a name to a gid_t if possible. Return -1 if not a group.
1471 ********************************************************************/
1473 gid_t nametogid(const char *name)
1479 g = (gid_t)strtol(name, &p, 0);
1480 if ((p != name) && (*p == '\0'))
1483 grp = sys_getgrnam(name);
1485 return(grp->gr_gid);
1489 /*******************************************************************
1490 legacy wrapper for smb_panic2()
1491 ********************************************************************/
1492 void smb_panic( const char *why )
1494 smb_panic2( why, True );
1497 /*******************************************************************
1498 Something really nasty happened - panic !
1499 ********************************************************************/
1501 #ifdef HAVE_LIBEXC_H
1505 void smb_panic2(const char *why, BOOL decrement_pid_count )
1509 #ifdef HAVE_BACKTRACE_SYMBOLS
1510 void *backtrace_stack[BACKTRACE_STACK_SIZE];
1511 size_t backtrace_size;
1512 char **backtrace_strings;
1518 if (global_clobber_region_function) {
1519 DEBUG(0,("smb_panic: clobber_region() last called from [%s(%u)]\n",
1520 global_clobber_region_function,
1521 global_clobber_region_line));
1526 /* only smbd needs to decrement the smbd counter in connections.tdb */
1527 if ( decrement_pid_count )
1528 decrement_smbd_process_count();
1530 cmd = lp_panic_action();
1532 DEBUG(0, ("smb_panic(): calling panic action [%s]\n", cmd));
1533 result = system(cmd);
1536 DEBUG(0, ("smb_panic(): fork failed in panic action: %s\n",
1539 DEBUG(0, ("smb_panic(): action returned status %d\n",
1540 WEXITSTATUS(result)));
1542 DEBUG(0,("PANIC: %s\n", why));
1544 #ifdef HAVE_BACKTRACE_SYMBOLS
1545 /* get the backtrace (stack frames) */
1546 backtrace_size = backtrace(backtrace_stack,BACKTRACE_STACK_SIZE);
1547 backtrace_strings = backtrace_symbols(backtrace_stack, backtrace_size);
1549 DEBUG(0, ("BACKTRACE: %lu stack frames:\n",
1550 (unsigned long)backtrace_size));
1552 if (backtrace_strings) {
1555 for (i = 0; i < backtrace_size; i++)
1556 DEBUGADD(0, (" #%u %s\n", i, backtrace_strings[i]));
1558 /* Leak the backtrace_strings, rather than risk what free() might do */
1563 #define NAMESIZE 32 /* Arbitrary */
1565 /* The IRIX libexc library provides an API for unwinding the stack. See
1566 * libexc(3) for details. Apparantly trace_back_stack leaks memory, but
1567 * since we are about to abort anyway, it hardly matters.
1569 * Note that if we paniced due to a SIGSEGV or SIGBUS (or similar) this
1570 * will fail with a nasty message upon failing to open the /proc entry.
1573 __uint64_t addrs[BACKTRACE_STACK_SIZE];
1574 char * names[BACKTRACE_STACK_SIZE];
1575 char namebuf[BACKTRACE_STACK_SIZE * NAMESIZE];
1582 ZERO_ARRAY(namebuf);
1584 /* We need to be root so we can open our /proc entry to walk
1585 * our stack. It also helps when we want to dump core.
1589 for (i = 0; i < BACKTRACE_STACK_SIZE; i++) {
1590 names[i] = namebuf + (i * NAMESIZE);
1593 levels = trace_back_stack(0, addrs, names,
1594 BACKTRACE_STACK_SIZE, NAMESIZE - 1);
1596 DEBUG(0, ("BACKTRACE: %d stack frames:\n", levels));
1597 for (i = 0; i < levels; i++) {
1598 DEBUGADD(0, (" #%d 0x%llx %s\n", i, addrs[i], names[i]));
1606 CatchSignal(SIGABRT,SIGNAL_CAST SIG_DFL);
1611 /*******************************************************************
1612 A readdir wrapper which just returns the file name.
1613 ********************************************************************/
1615 const char *readdirname(DIR *p)
1617 SMB_STRUCT_DIRENT *ptr;
1623 ptr = (SMB_STRUCT_DIRENT *)sys_readdir(p);
1627 dname = ptr->d_name;
1634 #ifdef HAVE_BROKEN_READDIR
1635 /* using /usr/ucb/cc is BAD */
1641 int len = NAMLEN(ptr);
1642 memcpy(buf, dname, len);
1650 /*******************************************************************
1651 Utility function used to decide if the last component
1652 of a path matches a (possibly wildcarded) entry in a namelist.
1653 ********************************************************************/
1655 BOOL is_in_path(const char *name, name_compare_entry *namelist, BOOL case_sensitive)
1657 pstring last_component;
1660 /* if we have no list it's obviously not in the path */
1661 if((namelist == NULL ) || ((namelist != NULL) && (namelist[0].name == NULL))) {
1665 DEBUG(8, ("is_in_path: %s\n", name));
1667 /* Get the last component of the unix name. */
1668 p = strrchr_m(name, '/');
1669 strncpy(last_component, p ? ++p : name, sizeof(last_component)-1);
1670 last_component[sizeof(last_component)-1] = '\0';
1672 for(; namelist->name != NULL; namelist++) {
1673 if(namelist->is_wild) {
1674 if (mask_match(last_component, namelist->name, case_sensitive)) {
1675 DEBUG(8,("is_in_path: mask match succeeded\n"));
1679 if((case_sensitive && (strcmp(last_component, namelist->name) == 0))||
1680 (!case_sensitive && (StrCaseCmp(last_component, namelist->name) == 0))) {
1681 DEBUG(8,("is_in_path: match succeeded\n"));
1686 DEBUG(8,("is_in_path: match not found\n"));
1691 /*******************************************************************
1692 Strip a '/' separated list into an array of
1693 name_compare_enties structures suitable for
1694 passing to is_in_path(). We do this for
1695 speed so we can pre-parse all the names in the list
1696 and don't do it for each call to is_in_path().
1697 namelist is modified here and is assumed to be
1698 a copy owned by the caller.
1699 We also check if the entry contains a wildcard to
1700 remove a potentially expensive call to mask_match
1702 ********************************************************************/
1704 void set_namearray(name_compare_entry **ppname_array, char *namelist)
1707 char *nameptr = namelist;
1708 int num_entries = 0;
1711 (*ppname_array) = NULL;
1713 if((nameptr == NULL ) || ((nameptr != NULL) && (*nameptr == '\0')))
1716 /* We need to make two passes over the string. The
1717 first to count the number of elements, the second
1722 if ( *nameptr == '/' ) {
1723 /* cope with multiple (useless) /s) */
1727 /* find the next / */
1728 name_end = strchr_m(nameptr, '/');
1730 /* oops - the last check for a / didn't find one. */
1731 if (name_end == NULL)
1734 /* next segment please */
1735 nameptr = name_end + 1;
1739 if(num_entries == 0)
1742 if(( (*ppname_array) = SMB_MALLOC_ARRAY(name_compare_entry, num_entries + 1)) == NULL) {
1743 DEBUG(0,("set_namearray: malloc fail\n"));
1747 /* Now copy out the names */
1751 if ( *nameptr == '/' ) {
1752 /* cope with multiple (useless) /s) */
1756 /* find the next / */
1757 if ((name_end = strchr_m(nameptr, '/')) != NULL)
1760 /* oops - the last check for a / didn't find one. */
1761 if(name_end == NULL)
1764 (*ppname_array)[i].is_wild = ms_has_wild(nameptr);
1765 if(((*ppname_array)[i].name = SMB_STRDUP(nameptr)) == NULL) {
1766 DEBUG(0,("set_namearray: malloc fail (1)\n"));
1770 /* next segment please */
1771 nameptr = name_end + 1;
1775 (*ppname_array)[i].name = NULL;
1780 /****************************************************************************
1781 Routine to free a namearray.
1782 ****************************************************************************/
1784 void free_namearray(name_compare_entry *name_array)
1788 if(name_array == NULL)
1791 for(i=0; name_array[i].name!=NULL; i++)
1792 SAFE_FREE(name_array[i].name);
1793 SAFE_FREE(name_array);
1797 #define DBGC_CLASS DBGC_LOCKING
1799 /****************************************************************************
1800 Simple routine to do POSIX file locking. Cruft in NFS and 64->32 bit mapping
1801 is dealt with in posix.c
1802 ****************************************************************************/
1804 BOOL fcntl_lock(int fd, int op, SMB_OFF_T offset, SMB_OFF_T count, int type)
1806 SMB_STRUCT_FLOCK lock;
1809 DEBUG(8,("fcntl_lock %d %d %.0f %.0f %d\n",fd,op,(double)offset,(double)count,type));
1812 lock.l_whence = SEEK_SET;
1813 lock.l_start = offset;
1817 ret = sys_fcntl_ptr(fd,op,&lock);
1819 if (ret == -1 && errno != 0)
1820 DEBUG(3,("fcntl_lock: fcntl lock gave errno %d (%s)\n",errno,strerror(errno)));
1823 if (op == SMB_F_GETLK) {
1825 (lock.l_type != F_UNLCK) &&
1826 (lock.l_pid != 0) &&
1827 (lock.l_pid != sys_getpid())) {
1828 DEBUG(3,("fcntl_lock: fd %d is locked by pid %d\n",fd,(int)lock.l_pid));
1832 /* it must be not locked or locked by me */
1836 /* a lock set or unset */
1838 DEBUG(3,("fcntl_lock: lock failed at offset %.0f count %.0f op %d type %d (%s)\n",
1839 (double)offset,(double)count,op,type,strerror(errno)));
1843 /* everything went OK */
1844 DEBUG(8,("fcntl_lock: Lock call successful\n"));
1850 #define DBGC_CLASS DBGC_ALL
1852 /*******************************************************************
1853 Is the name specified one of my netbios names.
1854 Returns true if it is equal, false otherwise.
1855 ********************************************************************/
1857 BOOL is_myname(const char *s)
1862 for (n=0; my_netbios_names(n); n++) {
1863 if (strequal(my_netbios_names(n), s)) {
1868 DEBUG(8, ("is_myname(\"%s\") returns %d\n", s, ret));
1872 BOOL is_myname_or_ipaddr(const char *s)
1874 fstring name, dnsname;
1880 /* santize the string from '\\name' */
1884 servername = strrchr_m( name, '\\' );
1890 /* optimize for the common case */
1892 if (strequal(servername, global_myname()))
1895 /* check for an alias */
1897 if (is_myname(servername))
1900 /* check for loopback */
1902 if (strequal(servername, "localhost"))
1905 /* maybe it's my dns name */
1907 if ( get_mydnsfullname( dnsname ) )
1908 if ( strequal( servername, dnsname ) )
1911 /* handle possible CNAME records */
1913 if ( !is_ipaddress( servername ) ) {
1914 /* use DNS to resolve the name, but only the first address */
1917 if (((hp = sys_gethostbyname(name)) != NULL) && (hp->h_addr != NULL)) {
1918 struct in_addr return_ip;
1919 putip( (char*)&return_ip, (char*)hp->h_addr );
1920 fstrcpy( name, inet_ntoa( return_ip ) );
1925 /* maybe its an IP address? */
1926 if (is_ipaddress(servername)) {
1927 struct iface_struct nics[MAX_INTERFACES];
1931 ip = interpret_addr(servername);
1932 if ((ip==0) || (ip==0xffffffff))
1935 n = get_interfaces(nics, MAX_INTERFACES);
1936 for (i=0; i<n; i++) {
1937 if (ip == nics[i].ip.s_addr)
1946 /*******************************************************************
1947 Is the name specified our workgroup/domain.
1948 Returns true if it is equal, false otherwise.
1949 ********************************************************************/
1951 BOOL is_myworkgroup(const char *s)
1955 if (strequal(s, lp_workgroup())) {
1959 DEBUG(8, ("is_myworkgroup(\"%s\") returns %d\n", s, ret));
1963 /*******************************************************************
1964 we distinguish between 2K and XP by the "Native Lan Manager" string
1965 WinXP => "Windows 2002 5.1"
1966 Win2k => "Windows 2000 5.0"
1967 NT4 => "Windows NT 4.0"
1968 Win9x => "Windows 4.0"
1969 Windows 2003 doesn't set the native lan manager string but
1970 they do set the domain to "Windows 2003 5.2" (probably a bug).
1971 ********************************************************************/
1973 void ra_lanman_string( const char *native_lanman )
1975 if ( strcmp( native_lanman, "Windows 2002 5.1" ) == 0 )
1976 set_remote_arch( RA_WINXP );
1977 else if ( strcmp( native_lanman, "Windows Server 2003 5.2" ) == 0 )
1978 set_remote_arch( RA_WIN2K3 );
1981 /*******************************************************************
1982 Set the horrid remote_arch string based on an enum.
1983 ********************************************************************/
1985 void set_remote_arch(enum remote_arch_types type)
1990 fstrcpy(remote_arch, "WfWg");
1993 fstrcpy(remote_arch, "OS2");
1996 fstrcpy(remote_arch, "Win95");
1999 fstrcpy(remote_arch, "WinNT");
2002 fstrcpy(remote_arch, "Win2K");
2005 fstrcpy(remote_arch, "WinXP");
2008 fstrcpy(remote_arch, "Win2K3");
2011 fstrcpy(remote_arch,"Samba");
2014 fstrcpy(remote_arch,"CIFSFS");
2017 ra_type = RA_UNKNOWN;
2018 fstrcpy(remote_arch, "UNKNOWN");
2022 DEBUG(10,("set_remote_arch: Client arch is \'%s\'\n", remote_arch));
2025 /*******************************************************************
2026 Get the remote_arch type.
2027 ********************************************************************/
2029 enum remote_arch_types get_remote_arch(void)
2034 void print_asc(int level, const unsigned char *buf,int len)
2038 DEBUG(level,("%c", isprint(buf[i])?buf[i]:'.'));
2041 void dump_data(int level, const char *buf1,int len)
2043 const unsigned char *buf = (const unsigned char *)buf1;
2047 if (!DEBUGLVL(level)) return;
2049 DEBUGADD(level,("[%03X] ",i));
2051 DEBUGADD(level,("%02X ",(int)buf[i]));
2053 if (i%8 == 0) DEBUGADD(level,(" "));
2055 print_asc(level,&buf[i-16],8); DEBUGADD(level,(" "));
2056 print_asc(level,&buf[i-8],8); DEBUGADD(level,("\n"));
2057 if (i<len) DEBUGADD(level,("[%03X] ",i));
2063 DEBUGADD(level,(" "));
2064 if (n>8) DEBUGADD(level,(" "));
2065 while (n--) DEBUGADD(level,(" "));
2067 print_asc(level,&buf[i-(i%16)],n); DEBUGADD(level,( " " ));
2069 if (n>0) print_asc(level,&buf[i-n],n);
2070 DEBUGADD(level,("\n"));
2074 void dump_data_pw(const char *msg, const uchar * data, size_t len)
2076 #ifdef DEBUG_PASSWORD
2077 DEBUG(11, ("%s", msg));
2078 if (data != NULL && len > 0)
2080 dump_data(11, data, len);
2085 char *tab_depth(int depth)
2087 static pstring spaces;
2088 memset(spaces, ' ', depth * 4);
2089 spaces[depth * 4] = 0;
2093 /*****************************************************************************
2094 Provide a checksum on a string
2096 Input: s - the null-terminated character string for which the checksum
2099 Output: The checksum value calculated for s.
2100 *****************************************************************************/
2102 int str_checksum(const char *s)
2110 res ^= (c << (i % 15)) ^ (c >> (15-(i%15)));
2117 /*****************************************************************
2118 Zero a memory area then free it. Used to catch bugs faster.
2119 *****************************************************************/
2121 void zero_free(void *p, size_t size)
2127 /*****************************************************************
2128 Set our open file limit to a requested max and return the limit.
2129 *****************************************************************/
2131 int set_maxfiles(int requested_max)
2133 #if (defined(HAVE_GETRLIMIT) && defined(RLIMIT_NOFILE))
2135 int saved_current_limit;
2137 if(getrlimit(RLIMIT_NOFILE, &rlp)) {
2138 DEBUG(0,("set_maxfiles: getrlimit (1) for RLIMIT_NOFILE failed with error %s\n",
2141 return requested_max;
2145 * Set the fd limit to be real_max_open_files + MAX_OPEN_FUDGEFACTOR to
2146 * account for the extra fd we need
2147 * as well as the log files and standard
2148 * handles etc. Save the limit we want to set in case
2149 * we are running on an OS that doesn't support this limit (AIX)
2150 * which always returns RLIM_INFINITY for rlp.rlim_max.
2153 /* Try raising the hard (max) limit to the requested amount. */
2155 #if defined(RLIM_INFINITY)
2156 if (rlp.rlim_max != RLIM_INFINITY) {
2157 int orig_max = rlp.rlim_max;
2159 if ( rlp.rlim_max < requested_max )
2160 rlp.rlim_max = requested_max;
2162 /* This failing is not an error - many systems (Linux) don't
2163 support our default request of 10,000 open files. JRA. */
2165 if(setrlimit(RLIMIT_NOFILE, &rlp)) {
2166 DEBUG(3,("set_maxfiles: setrlimit for RLIMIT_NOFILE for %d max files failed with error %s\n",
2167 (int)rlp.rlim_max, strerror(errno) ));
2169 /* Set failed - restore original value from get. */
2170 rlp.rlim_max = orig_max;
2175 /* Now try setting the soft (current) limit. */
2177 saved_current_limit = rlp.rlim_cur = MIN(requested_max,rlp.rlim_max);
2179 if(setrlimit(RLIMIT_NOFILE, &rlp)) {
2180 DEBUG(0,("set_maxfiles: setrlimit for RLIMIT_NOFILE for %d files failed with error %s\n",
2181 (int)rlp.rlim_cur, strerror(errno) ));
2183 return saved_current_limit;
2186 if(getrlimit(RLIMIT_NOFILE, &rlp)) {
2187 DEBUG(0,("set_maxfiles: getrlimit (2) for RLIMIT_NOFILE failed with error %s\n",
2190 return saved_current_limit;
2193 #if defined(RLIM_INFINITY)
2194 if(rlp.rlim_cur == RLIM_INFINITY)
2195 return saved_current_limit;
2198 if((int)rlp.rlim_cur > saved_current_limit)
2199 return saved_current_limit;
2201 return rlp.rlim_cur;
2202 #else /* !defined(HAVE_GETRLIMIT) || !defined(RLIMIT_NOFILE) */
2204 * No way to know - just guess...
2206 return requested_max;
2210 /*****************************************************************
2211 Splits out the start of the key (HKLM or HKU) and the rest of the key.
2212 *****************************************************************/
2214 BOOL reg_split_key(const char *full_keyname, uint32 *reg_type, char *key_name)
2218 if (!next_token(&full_keyname, tmp, "\\", sizeof(tmp)))
2223 DEBUG(10, ("reg_split_key: hive %s\n", tmp));
2225 if (strequal(tmp, "HKLM") || strequal(tmp, "HKEY_LOCAL_MACHINE"))
2226 (*reg_type) = HKEY_LOCAL_MACHINE;
2227 else if (strequal(tmp, "HKCR") || strequal(tmp, "HKEY_CLASSES_ROOT"))
2228 (*reg_type) = HKEY_CLASSES_ROOT;
2229 else if (strequal(tmp, "HKU") || strequal(tmp, "HKEY_USERS"))
2230 (*reg_type) = HKEY_USERS;
2231 else if (strequal(tmp, "HKPD")||strequal(tmp, "HKEY_PERFORMANCE_DATA"))
2232 (*reg_type) = HKEY_PERFORMANCE_DATA;
2234 DEBUG(10,("reg_split_key: unrecognised hive key %s\n", tmp));
2238 if (next_token(&full_keyname, tmp, "\n\r", sizeof(tmp)))
2239 fstrcpy(key_name, tmp);
2243 DEBUG(10, ("reg_split_key: name %s\n", key_name));
2248 /*****************************************************************
2249 Possibly replace mkstemp if it is broken.
2250 *****************************************************************/
2252 int smb_mkstemp(char *template)
2254 #if HAVE_SECURE_MKSTEMP
2255 return mkstemp(template);
2257 /* have a reasonable go at emulating it. Hope that
2258 the system mktemp() isn't completly hopeless */
2259 char *p = mktemp(template);
2262 return open(p, O_CREAT|O_EXCL|O_RDWR, 0600);
2266 /*****************************************************************
2267 malloc that aborts with smb_panic on fail or zero size.
2268 *****************************************************************/
2270 void *smb_xmalloc_array(size_t size, unsigned int count)
2274 smb_panic("smb_xmalloc_array: called with zero size.\n");
2275 if (count >= MAX_ALLOC_SIZE/size) {
2276 smb_panic("smb_xmalloc: alloc size too large.\n");
2278 if ((p = SMB_MALLOC(size*count)) == NULL) {
2279 DEBUG(0, ("smb_xmalloc_array failed to allocate %lu * %lu bytes\n",
2280 (unsigned long)size, (unsigned long)count));
2281 smb_panic("smb_xmalloc_array: malloc fail.\n");
2287 Memdup with smb_panic on fail.
2290 void *smb_xmemdup(const void *p, size_t size)
2293 p2 = SMB_XMALLOC_ARRAY(unsigned char,size);
2294 memcpy(p2, p, size);
2299 strdup that aborts on malloc fail.
2302 char *smb_xstrdup(const char *s)
2304 #if defined(PARANOID_MALLOC_CHECKER)
2309 char *s1 = strdup(s);
2310 #if defined(PARANOID_MALLOC_CHECKER)
2311 #define strdup(s) __ERROR_DONT_USE_STRDUP_DIRECTLY
2314 smb_panic("smb_xstrdup: malloc fail\n");
2320 strndup that aborts on malloc fail.
2323 char *smb_xstrndup(const char *s, size_t n)
2325 #if defined(PARANOID_MALLOC_CHECKER)
2330 char *s1 = strndup(s, n);
2331 #if defined(PARANOID_MALLOC_CHECKER)
2332 #define strndup(s,n) __ERROR_DONT_USE_STRNDUP_DIRECTLY
2335 smb_panic("smb_xstrndup: malloc fail\n");
2340 vasprintf that aborts on malloc fail
2343 int smb_xvasprintf(char **ptr, const char *format, va_list ap)
2350 n = vasprintf(ptr, format, ap2);
2351 if (n == -1 || ! *ptr)
2352 smb_panic("smb_xvasprintf: out of memory");
2356 /*****************************************************************
2357 Like strdup but for memory.
2358 *****************************************************************/
2360 void *memdup(const void *p, size_t size)
2365 p2 = SMB_MALLOC(size);
2368 memcpy(p2, p, size);
2372 /*****************************************************************
2373 Get local hostname and cache result.
2374 *****************************************************************/
2376 char *myhostname(void)
2384 /*****************************************************************
2385 A useful function for returning a path in the Samba lock directory.
2386 *****************************************************************/
2388 char *lock_path(const char *name)
2390 static pstring fname;
2392 pstrcpy(fname,lp_lockdir());
2393 trim_char(fname,'\0','/');
2395 if (!directory_exist(fname,NULL))
2399 pstrcat(fname,name);
2404 /*****************************************************************
2405 A useful function for returning a path in the Samba pid directory.
2406 *****************************************************************/
2408 char *pid_path(const char *name)
2410 static pstring fname;
2412 pstrcpy(fname,lp_piddir());
2413 trim_char(fname,'\0','/');
2415 if (!directory_exist(fname,NULL))
2419 pstrcat(fname,name);
2425 * @brief Returns an absolute path to a file in the Samba lib directory.
2427 * @param name File to find, relative to LIBDIR.
2429 * @retval Pointer to a static #pstring containing the full path.
2432 char *lib_path(const char *name)
2434 static pstring fname;
2435 fstr_sprintf(fname, "%s/%s", dyn_LIBDIR, name);
2440 * @brief Returns the platform specific shared library extension.
2442 * @retval Pointer to a static #fstring containing the extension.
2445 const char *shlib_ext(void)
2447 return dyn_SHLIBEXT;
2450 /*******************************************************************
2451 Given a filename - get its directory name
2452 NB: Returned in static storage. Caveats:
2453 o Not safe in thread environment.
2454 o Caller must not free.
2455 o If caller wishes to preserve, they should copy.
2456 ********************************************************************/
2458 char *parent_dirname(const char *path)
2460 static pstring dirpath;
2466 pstrcpy(dirpath, path);
2467 p = strrchr_m(dirpath, '/'); /* Find final '/', if any */
2469 pstrcpy(dirpath, "."); /* No final "/", so dir is "." */
2472 ++p; /* For root "/", leave "/" in place */
2479 /*******************************************************************
2480 Determine if a pattern contains any Microsoft wildcard characters.
2481 *******************************************************************/
2483 BOOL ms_has_wild(const char *s)
2486 while ((c = *s++)) {
2499 BOOL ms_has_wild_w(const smb_ucs2_t *s)
2502 if (!s) return False;
2503 while ((c = *s++)) {
2505 case UCS2_CHAR('*'):
2506 case UCS2_CHAR('?'):
2507 case UCS2_CHAR('<'):
2508 case UCS2_CHAR('>'):
2509 case UCS2_CHAR('"'):
2516 /*******************************************************************
2517 A wrapper that handles case sensitivity and the special handling
2519 *******************************************************************/
2521 BOOL mask_match(const char *string, char *pattern, BOOL is_case_sensitive)
2523 if (strcmp(string,"..") == 0)
2525 if (strcmp(pattern,".") == 0)
2528 return ms_fnmatch(pattern, string, Protocol <= PROTOCOL_LANMAN2, is_case_sensitive) == 0;
2531 /*******************************************************************
2532 A wrapper that handles case sensitivity and the special handling
2533 of the ".." name. Varient that is only called by old search code which requires
2534 pattern translation.
2535 *******************************************************************/
2537 BOOL mask_match_search(const char *string, char *pattern, BOOL is_case_sensitive)
2539 if (strcmp(string,"..") == 0)
2541 if (strcmp(pattern,".") == 0)
2544 return ms_fnmatch(pattern, string, True, is_case_sensitive) == 0;
2547 /*******************************************************************
2548 A wrapper that handles a list of patters and calls mask_match()
2549 on each. Returns True if any of the patterns match.
2550 *******************************************************************/
2552 BOOL mask_match_list(const char *string, char **list, int listLen, BOOL is_case_sensitive)
2554 while (listLen-- > 0) {
2555 if (mask_match(string, *list++, is_case_sensitive))
2561 /*********************************************************
2562 Recursive routine that is called by unix_wild_match.
2563 *********************************************************/
2565 static BOOL unix_do_match(const char *regexp, const char *str)
2569 for( p = regexp; *p && *str; ) {
2580 * Look for a character matching
2581 * the one after the '*'.
2585 return True; /* Automatic match */
2588 while(*str && (*p != *str))
2592 * Patch from weidel@multichart.de. In the case of the regexp
2593 * '*XX*' we want to ensure there are at least 2 'X' characters
2594 * in the string after the '*' for a match to be made.
2601 * Eat all the characters that match, but count how many there were.
2604 while(*str && (*p == *str)) {
2610 * Now check that if the regexp had n identical characters that
2611 * matchcount had at least that many matches.
2614 while ( *(p+1) && (*(p+1) == *p)) {
2619 if ( matchcount <= 0 )
2623 str--; /* We've eaten the match char after the '*' */
2625 if(unix_do_match(p, str))
2647 if (!*p && str[0] == '.' && str[1] == 0)
2650 if (!*str && *p == '?') {
2656 if(!*str && (*p == '*' && p[1] == '\0'))
2662 /*******************************************************************
2663 Simple case insensitive interface to a UNIX wildcard matcher.
2664 *******************************************************************/
2666 BOOL unix_wild_match(const char *pattern, const char *string)
2671 pstrcpy(p2, pattern);
2672 pstrcpy(s2, string);
2676 /* Remove any *? and ** from the pattern as they are meaningless */
2677 for(p = p2; *p; p++)
2678 while( *p == '*' && (p[1] == '?' ||p[1] == '*'))
2679 pstrcpy( &p[1], &p[2]);
2681 if (strequal(p2,"*"))
2684 return unix_do_match(p2, s2) == 0;
2687 /**********************************************************************
2688 Converts a name to a fully qalified domain name.
2689 ***********************************************************************/
2691 void name_to_fqdn(fstring fqdn, const char *name)
2693 struct hostent *hp = sys_gethostbyname(name);
2694 if ( hp && hp->h_name && *hp->h_name ) {
2695 DEBUG(10,("name_to_fqdn: lookup for %s -> %s.\n", name, hp->h_name));
2696 fstrcpy(fqdn,hp->h_name);
2698 DEBUG(10,("name_to_fqdn: lookup for %s failed.\n", name));
2699 fstrcpy(fqdn, name);
2705 /*******************************************************************
2706 This routine is a trick to immediately catch errors when debugging
2707 with insure. A xterm with a gdb is popped up when insure catches
2708 a error. It is Linux specific.
2709 ********************************************************************/
2711 int _Insure_trap_error(int a1, int a2, int a3, int a4, int a5, int a6)
2716 /* you can get /usr/bin/backtrace from
2717 http://samba.org/ftp/unpacked/junkcode/backtrace */
2718 pstring cmd = "/usr/bin/backtrace %d";
2720 slprintf(pidstr, sizeof(pidstr)-1, "%d", sys_getpid());
2721 pstring_sub(cmd, "%d", pidstr);
2725 h = dlopen("/usr/local/parasoft/insure++lite/lib.linux2/libinsure.so", RTLD_LAZY);
2726 fn = dlsym(h, "_Insure_trap_error");
2728 if (!h || h == _Insure_trap_error) {
2729 h = dlopen("/usr/local/parasoft/lib.linux2/libinsure.so", RTLD_LAZY);
2730 fn = dlsym(h, "_Insure_trap_error");
2734 ret = fn(a1, a2, a3, a4, a5, a6);