/* Unix SMB/CIFS implementation. Samba utility functions Copyright (C) Andrew Tridgell 1992-1998 Copyright (C) Jeremy Allison 2001-2002 Copyright (C) Simo Sorce 2001 Copyright (C) Jim McDonough 2003 This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ #include "includes.h" extern fstring local_machine; extern char *global_clobber_region_function; extern unsigned int global_clobber_region_line; extern fstring remote_arch; /* Max allowable allococation - 256mb - 0x10000000 */ #define MAX_ALLOC_SIZE (1024*1024*256) #if (defined(HAVE_NETGROUP) && defined (WITH_AUTOMOUNT)) #ifdef WITH_NISPLUS_HOME #ifdef BROKEN_NISPLUS_INCLUDE_FILES /* * The following lines are needed due to buggy include files * in Solaris 2.6 which define GROUP in both /usr/include/sys/acl.h and * also in /usr/include/rpcsvc/nis.h. The definitions conflict. JRA. * Also GROUP_OBJ is defined as 0x4 in /usr/include/sys/acl.h and as * an enum in /usr/include/rpcsvc/nis.h. */ #if defined(GROUP) #undef GROUP #endif #if defined(GROUP_OBJ) #undef GROUP_OBJ #endif #endif /* BROKEN_NISPLUS_INCLUDE_FILES */ #include #endif /* WITH_NISPLUS_HOME */ #endif /* HAVE_NETGROUP && WITH_AUTOMOUNT */ enum protocol_types Protocol = PROTOCOL_COREPLUS; /* a default finfo structure to ensure all fields are sensible */ file_info def_finfo = {-1,0,0,0,0,0,0,"",""}; /* this is used by the chaining code */ int chain_size = 0; int trans_num = 0; static enum remote_arch_types ra_type = RA_UNKNOWN; pstring user_socket_options=DEFAULT_SOCKET_OPTIONS; /*********************************************************************** Definitions for all names. ***********************************************************************/ static char *smb_myname; static char *smb_myworkgroup; static char *smb_scope; static int smb_num_netbios_names; static char **smb_my_netbios_names; /*********************************************************************** Allocate and set myname. Ensure upper case. ***********************************************************************/ BOOL set_global_myname(const char *myname) { SAFE_FREE(smb_myname); smb_myname = SMB_STRDUP(myname); if (!smb_myname) return False; strupper_m(smb_myname); return True; } const char *global_myname(void) { return smb_myname; } /*********************************************************************** Allocate and set myworkgroup. Ensure upper case. ***********************************************************************/ BOOL set_global_myworkgroup(const char *myworkgroup) { SAFE_FREE(smb_myworkgroup); smb_myworkgroup = SMB_STRDUP(myworkgroup); if (!smb_myworkgroup) return False; strupper_m(smb_myworkgroup); return True; } const char *lp_workgroup(void) { return smb_myworkgroup; } /*********************************************************************** Allocate and set scope. Ensure upper case. ***********************************************************************/ BOOL set_global_scope(const char *scope) { SAFE_FREE(smb_scope); smb_scope = SMB_STRDUP(scope); if (!smb_scope) return False; strupper_m(smb_scope); return True; } /********************************************************************* Ensure scope is never null string. *********************************************************************/ const char *global_scope(void) { if (!smb_scope) set_global_scope(""); return smb_scope; } static void free_netbios_names_array(void) { int i; for (i = 0; i < smb_num_netbios_names; i++) SAFE_FREE(smb_my_netbios_names[i]); SAFE_FREE(smb_my_netbios_names); smb_num_netbios_names = 0; } static BOOL allocate_my_netbios_names_array(size_t number) { free_netbios_names_array(); smb_num_netbios_names = number + 1; smb_my_netbios_names = SMB_MALLOC_ARRAY( char *, smb_num_netbios_names ); if (!smb_my_netbios_names) return False; memset(smb_my_netbios_names, '\0', sizeof(char *) * smb_num_netbios_names); return True; } static BOOL set_my_netbios_names(const char *name, int i) { SAFE_FREE(smb_my_netbios_names[i]); smb_my_netbios_names[i] = SMB_STRDUP(name); if (!smb_my_netbios_names[i]) return False; strupper_m(smb_my_netbios_names[i]); return True; } const char *my_netbios_names(int i) { return smb_my_netbios_names[i]; } BOOL set_netbios_aliases(const char **str_array) { size_t namecount; /* Work out the max number of netbios aliases that we have */ for( namecount=0; str_array && (str_array[namecount] != NULL); namecount++ ) ; if ( global_myname() && *global_myname()) namecount++; /* Allocate space for the netbios aliases */ if (!allocate_my_netbios_names_array(namecount)) return False; /* Use the global_myname string first */ namecount=0; if ( global_myname() && *global_myname()) { set_my_netbios_names( global_myname(), namecount ); namecount++; } if (str_array) { size_t i; for ( i = 0; str_array[i] != NULL; i++) { size_t n; BOOL duplicate = False; /* Look for duplicates */ for( n=0; nst_mode)) || (S_ISFIFO(sbuf->st_mode))); } /******************************************************************* Check a files mod time. ********************************************************************/ time_t file_modtime(const char *fname) { SMB_STRUCT_STAT st; if (sys_stat(fname,&st) != 0) return(0); return(st.st_mtime); } /******************************************************************* Check if a directory exists. ********************************************************************/ BOOL directory_exist(char *dname,SMB_STRUCT_STAT *st) { SMB_STRUCT_STAT st2; BOOL ret; if (!st) st = &st2; if (sys_stat(dname,st) != 0) return(False); ret = S_ISDIR(st->st_mode); if(!ret) errno = ENOTDIR; return ret; } /******************************************************************* Returns the size in bytes of the named file. ********************************************************************/ SMB_OFF_T get_file_size(char *file_name) { SMB_STRUCT_STAT buf; buf.st_size = 0; if(sys_stat(file_name,&buf) != 0) return (SMB_OFF_T)-1; return(buf.st_size); } /******************************************************************* Return a string representing an attribute for a file. ********************************************************************/ char *attrib_string(uint16 mode) { static fstring attrstr; attrstr[0] = 0; if (mode & aVOLID) fstrcat(attrstr,"V"); if (mode & aDIR) fstrcat(attrstr,"D"); if (mode & aARCH) fstrcat(attrstr,"A"); if (mode & aHIDDEN) fstrcat(attrstr,"H"); if (mode & aSYSTEM) fstrcat(attrstr,"S"); if (mode & aRONLY) fstrcat(attrstr,"R"); return(attrstr); } /******************************************************************* Show a smb message structure. ********************************************************************/ void show_msg(char *buf) { int i; int bcc=0; if (!DEBUGLVL(5)) return; DEBUG(5,("size=%d\nsmb_com=0x%x\nsmb_rcls=%d\nsmb_reh=%d\nsmb_err=%d\nsmb_flg=%d\nsmb_flg2=%d\n", smb_len(buf), (int)CVAL(buf,smb_com), (int)CVAL(buf,smb_rcls), (int)CVAL(buf,smb_reh), (int)SVAL(buf,smb_err), (int)CVAL(buf,smb_flg), (int)SVAL(buf,smb_flg2))); DEBUGADD(5,("smb_tid=%d\nsmb_pid=%d\nsmb_uid=%d\nsmb_mid=%d\n", (int)SVAL(buf,smb_tid), (int)SVAL(buf,smb_pid), (int)SVAL(buf,smb_uid), (int)SVAL(buf,smb_mid))); DEBUGADD(5,("smt_wct=%d\n",(int)CVAL(buf,smb_wct))); for (i=0;i<(int)CVAL(buf,smb_wct);i++) DEBUGADD(5,("smb_vwv[%2d]=%5d (0x%X)\n",i, SVAL(buf,smb_vwv+2*i),SVAL(buf,smb_vwv+2*i))); bcc = (int)SVAL(buf,smb_vwv+2*(CVAL(buf,smb_wct))); DEBUGADD(5,("smb_bcc=%d\n",bcc)); if (DEBUGLEVEL < 10) return; if (DEBUGLEVEL < 50) bcc = MIN(bcc, 512); dump_data(10, smb_buf(buf), bcc); } /******************************************************************* Set the length and marker of an smb packet. ********************************************************************/ void smb_setlen(char *buf,int len) { _smb_setlen(buf,len); SCVAL(buf,4,0xFF); SCVAL(buf,5,'S'); SCVAL(buf,6,'M'); SCVAL(buf,7,'B'); } /******************************************************************* Setup the word count and byte count for a smb message. ********************************************************************/ int set_message(char *buf,int num_words,int num_bytes,BOOL zero) { if (zero) memset(buf + smb_size,'\0',num_words*2 + num_bytes); SCVAL(buf,smb_wct,num_words); SSVAL(buf,smb_vwv + num_words*SIZEOFWORD,num_bytes); smb_setlen(buf,smb_size + num_words*2 + num_bytes - 4); return (smb_size + num_words*2 + num_bytes); } /******************************************************************* Setup only the byte count for a smb message. ********************************************************************/ int set_message_bcc(char *buf,int num_bytes) { int num_words = CVAL(buf,smb_wct); SSVAL(buf,smb_vwv + num_words*SIZEOFWORD,num_bytes); smb_setlen(buf,smb_size + num_words*2 + num_bytes - 4); return (smb_size + num_words*2 + num_bytes); } /******************************************************************* Setup only the byte count for a smb message, using the end of the message as a marker. ********************************************************************/ int set_message_end(void *outbuf,void *end_ptr) { return set_message_bcc((char *)outbuf,PTR_DIFF(end_ptr,smb_buf((char *)outbuf))); } /******************************************************************* Reduce a file name, removing .. elements. ********************************************************************/ void dos_clean_name(char *s) { char *p=NULL; DEBUG(3,("dos_clean_name [%s]\n",s)); /* remove any double slashes */ all_string_sub(s, "\\\\", "\\", 0); while ((p = strstr_m(s,"\\..\\")) != NULL) { pstring s1; *p = 0; pstrcpy(s1,p+3); if ((p=strrchr_m(s,'\\')) != NULL) *p = 0; else *s = 0; pstrcat(s,s1); } trim_string(s,NULL,"\\.."); all_string_sub(s, "\\.\\", "\\", 0); } /******************************************************************* Reduce a file name, removing .. elements. ********************************************************************/ void unix_clean_name(char *s) { char *p=NULL; DEBUG(3,("unix_clean_name [%s]\n",s)); /* remove any double slashes */ all_string_sub(s, "//","/", 0); /* Remove leading ./ characters */ if(strncmp(s, "./", 2) == 0) { trim_string(s, "./", NULL); if(*s == 0) pstrcpy(s,"./"); } while ((p = strstr_m(s,"/../")) != NULL) { pstring s1; *p = 0; pstrcpy(s1,p+3); if ((p=strrchr_m(s,'/')) != NULL) *p = 0; else *s = 0; pstrcat(s,s1); } trim_string(s,NULL,"/.."); } /**************************************************************************** Make a dir struct. ****************************************************************************/ void make_dir_struct(char *buf, const char *mask, const char *fname,SMB_OFF_T size,int mode,time_t date, BOOL uc) { char *p; pstring mask2; pstrcpy(mask2,mask); if ((mode & aDIR) != 0) size = 0; memset(buf+1,' ',11); if ((p = strchr_m(mask2,'.')) != NULL) { *p = 0; push_ascii(buf+1,mask2,8, 0); push_ascii(buf+9,p+1,3, 0); *p = '.'; } else push_ascii(buf+1,mask2,11, 0); memset(buf+21,'\0',DIR_STRUCT_SIZE-21); SCVAL(buf,21,mode); put_dos_date(buf,22,date); SSVAL(buf,26,size & 0xFFFF); SSVAL(buf,28,(size >> 16)&0xFFFF); /* We only uppercase if FLAGS2_LONG_PATH_COMPONENTS is zero in the input buf. Strange, but verified on W2K3. Needed for OS/2. JRA. */ push_ascii(buf+30,fname,12, uc ? STR_UPPER : 0); DEBUG(8,("put name [%s] from [%s] into dir struct\n",buf+30, fname)); } /******************************************************************* Close the low 3 fd's and open dev/null in their place. ********************************************************************/ void close_low_fds(BOOL stderr_too) { #ifndef VALGRIND int fd; int i; close(0); close(1); if (stderr_too) close(2); /* try and use up these file descriptors, so silly library routines writing to stdout etc won't cause havoc */ for (i=0;i<3;i++) { if (i == 2 && !stderr_too) continue; fd = sys_open("/dev/null",O_RDWR,0); if (fd < 0) fd = sys_open("/dev/null",O_WRONLY,0); if (fd < 0) { DEBUG(0,("Can't open /dev/null\n")); return; } if (fd != i) { DEBUG(0,("Didn't get file descriptor %d\n",i)); return; } } #endif } /**************************************************************************** Set a fd into blocking/nonblocking mode. Uses POSIX O_NONBLOCK if available, else if SYSV use O_NDELAY if BSD use FNDELAY ****************************************************************************/ int set_blocking(int fd, BOOL set) { int val; #ifdef O_NONBLOCK #define FLAG_TO_SET O_NONBLOCK #else #ifdef SYSV #define FLAG_TO_SET O_NDELAY #else /* BSD */ #define FLAG_TO_SET FNDELAY #endif #endif if((val = sys_fcntl_long(fd, F_GETFL, 0)) == -1) return -1; if(set) /* Turn blocking on - ie. clear nonblock flag */ val &= ~FLAG_TO_SET; else val |= FLAG_TO_SET; return sys_fcntl_long( fd, F_SETFL, val); #undef FLAG_TO_SET } /**************************************************************************** Transfer some data between two fd's. ****************************************************************************/ #ifndef TRANSFER_BUF_SIZE #define TRANSFER_BUF_SIZE 65536 #endif ssize_t transfer_file_internal(int infd, int outfd, size_t n, ssize_t (*read_fn)(int, void *, size_t), ssize_t (*write_fn)(int, const void *, size_t)) { char *buf; size_t total = 0; ssize_t read_ret; ssize_t write_ret; size_t num_to_read_thistime; size_t num_written = 0; if ((buf = SMB_MALLOC(TRANSFER_BUF_SIZE)) == NULL) return -1; while (total < n) { num_to_read_thistime = MIN((n - total), TRANSFER_BUF_SIZE); read_ret = (*read_fn)(infd, buf, num_to_read_thistime); if (read_ret == -1) { DEBUG(0,("transfer_file_internal: read failure. Error = %s\n", strerror(errno) )); SAFE_FREE(buf); return -1; } if (read_ret == 0) break; num_written = 0; while (num_written < read_ret) { write_ret = (*write_fn)(outfd,buf + num_written, read_ret - num_written); if (write_ret == -1) { DEBUG(0,("transfer_file_internal: write failure. Error = %s\n", strerror(errno) )); SAFE_FREE(buf); return -1; } if (write_ret == 0) return (ssize_t)total; num_written += (size_t)write_ret; } total += (size_t)read_ret; } SAFE_FREE(buf); return (ssize_t)total; } SMB_OFF_T transfer_file(int infd,int outfd,SMB_OFF_T n) { return (SMB_OFF_T)transfer_file_internal(infd, outfd, (size_t)n, sys_read, sys_write); } /******************************************************************* Sleep for a specified number of milliseconds. ********************************************************************/ void smb_msleep(unsigned int t) { #if defined(HAVE_NANOSLEEP) struct timespec tval; int ret; tval.tv_sec = t/1000; tval.tv_nsec = 1000000*(t%1000); do { errno = 0; ret = nanosleep(&tval, &tval); } while (ret < 0 && errno == EINTR && (tval.tv_sec > 0 || tval.tv_nsec > 0)); #else unsigned int tdiff=0; struct timeval tval,t1,t2; fd_set fds; GetTimeOfDay(&t1); t2 = t1; while (tdiff < t) { tval.tv_sec = (t-tdiff)/1000; tval.tv_usec = 1000*((t-tdiff)%1000); /* Never wait for more than 1 sec. */ if (tval.tv_sec > 1) { tval.tv_sec = 1; tval.tv_usec = 0; } FD_ZERO(&fds); errno = 0; sys_select_intr(0,&fds,NULL,NULL,&tval); GetTimeOfDay(&t2); if (t2.tv_sec < t1.tv_sec) { /* Someone adjusted time... */ t1 = t2; } tdiff = TvalDiff(&t1,&t2); } #endif } /**************************************************************************** Become a daemon, discarding the controlling terminal. ****************************************************************************/ void become_daemon(BOOL Fork) { if (Fork) { if (sys_fork()) { _exit(0); } } /* detach from the terminal */ #ifdef HAVE_SETSID setsid(); #elif defined(TIOCNOTTY) { int i = sys_open("/dev/tty", O_RDWR, 0); if (i != -1) { ioctl(i, (int) TIOCNOTTY, (char *)0); close(i); } } #endif /* HAVE_SETSID */ /* Close fd's 0,1,2. Needed if started by rsh */ close_low_fds(False); /* Don't close stderr, let the debug system attach it to the logfile */ } /**************************************************************************** Put up a yes/no prompt. ****************************************************************************/ BOOL yesno(char *p) { pstring ans; printf("%s",p); if (!fgets(ans,sizeof(ans)-1,stdin)) return(False); if (*ans == 'y' || *ans == 'Y') return(True); return(False); } #if defined(PARANOID_MALLOC_CHECKER) /**************************************************************************** Internal malloc wrapper. Externally visible. ****************************************************************************/ void *malloc_(size_t size) { #undef malloc return malloc(size); #define malloc(s) __ERROR_DONT_USE_MALLOC_DIRECTLY } /**************************************************************************** Internal calloc wrapper. Not externally visible. ****************************************************************************/ static void *calloc_(size_t count, size_t size) { #undef calloc return calloc(count, size); #define calloc(n,s) __ERROR_DONT_USE_CALLOC_DIRECTLY } /**************************************************************************** Internal realloc wrapper. Not externally visible. ****************************************************************************/ static void *realloc_(void *ptr, size_t size) { #undef realloc return realloc(ptr, size); #define realloc(p,s) __ERROR_DONT_USE_RELLOC_DIRECTLY } #endif /* PARANOID_MALLOC_CHECKER */ /**************************************************************************** Type-safe malloc. ****************************************************************************/ void *malloc_array(size_t el_size, unsigned int count) { if (count >= MAX_ALLOC_SIZE/el_size) { return NULL; } #if defined(PARANOID_MALLOC_CHECKER) return malloc_(el_size*count); #else return malloc(el_size*count); #endif } /**************************************************************************** Type-safe calloc. ****************************************************************************/ void *calloc_array(size_t size, size_t nmemb) { if (nmemb >= MAX_ALLOC_SIZE/size) { return NULL; } #if defined(PARANOID_MALLOC_CHECKER) return calloc_(nmemb, size); #else return calloc(nmemb, size); #endif } /**************************************************************************** Expand a pointer to be a particular size. ****************************************************************************/ void *Realloc(void *p,size_t size) { void *ret=NULL; if (size == 0) { SAFE_FREE(p); DEBUG(5,("Realloc asked for 0 bytes\n")); return NULL; } #if defined(PARANOID_MALLOC_CHECKER) if (!p) ret = (void *)malloc_(size); else ret = (void *)realloc_(p,size); #else if (!p) ret = (void *)malloc(size); else ret = (void *)realloc(p,size); #endif if (!ret) DEBUG(0,("Memory allocation error: failed to expand to %d bytes\n",(int)size)); return(ret); } /**************************************************************************** Type-safe realloc. ****************************************************************************/ void *realloc_array(void *p,size_t el_size, unsigned int count) { if (count >= MAX_ALLOC_SIZE/el_size) { return NULL; } return Realloc(p,el_size*count); } /**************************************************************************** (Hopefully) efficient array append ****************************************************************************/ void add_to_large_array(TALLOC_CTX *mem_ctx, size_t element_size, void *element, void **array, uint32 *num_elements, ssize_t *array_size) { if (*array_size < 0) return; if (*array == NULL) { if (*array_size == 0) { *array_size = 128; } if (*array_size >= MAX_ALLOC_SIZE/element_size) { goto error; } if (mem_ctx != NULL) *array = TALLOC(mem_ctx, element_size * (*array_size)); else *array = SMB_MALLOC(element_size * (*array_size)); if (*array == NULL) goto error; } if (*num_elements == *array_size) { *array_size *= 2; if (*array_size >= MAX_ALLOC_SIZE/element_size) { goto error; } if (mem_ctx != NULL) *array = TALLOC_REALLOC(mem_ctx, *array, element_size * (*array_size)); else *array = SMB_REALLOC(*array, element_size * (*array_size)); if (*array == NULL) goto error; } memcpy((char *)(*array) + element_size*(*num_elements), element, element_size); *num_elements += 1; return; error: *num_elements = 0; *array_size = -1; } /**************************************************************************** Free memory, checks for NULL. Use directly SAFE_FREE() Exists only because we need to pass a function pointer somewhere --SSS ****************************************************************************/ void safe_free(void *p) { SAFE_FREE(p); } /**************************************************************************** Get my own name and IP. ****************************************************************************/ BOOL get_myname(char *my_name) { pstring hostname; *hostname = 0; /* get my host name */ if (gethostname(hostname, sizeof(hostname)) == -1) { DEBUG(0,("gethostname failed\n")); return False; } /* Ensure null termination. */ hostname[sizeof(hostname)-1] = '\0'; if (my_name) { /* split off any parts after an initial . */ char *p = strchr_m(hostname,'.'); if (p) *p = 0; fstrcpy(my_name,hostname); } return(True); } /**************************************************************************** Get my own canonical name, including domain. ****************************************************************************/ BOOL get_mydnsfullname(fstring my_dnsname) { static fstring dnshostname; struct hostent *hp; if (!*dnshostname) { /* get my host name */ if (gethostname(dnshostname, sizeof(dnshostname)) == -1) { *dnshostname = '\0'; DEBUG(0,("gethostname failed\n")); return False; } /* Ensure null termination. */ dnshostname[sizeof(dnshostname)-1] = '\0'; /* Ensure we get the cannonical name. */ if (!(hp = sys_gethostbyname(dnshostname))) { *dnshostname = '\0'; return False; } fstrcpy(dnshostname, hp->h_name); } fstrcpy(my_dnsname, dnshostname); return True; } /**************************************************************************** Get my own domain name. ****************************************************************************/ BOOL get_mydnsdomname(fstring my_domname) { fstring domname; char *p; *my_domname = '\0'; if (!get_mydnsfullname(domname)) { return False; } p = strchr_m(domname, '.'); if (p) { p++; fstrcpy(my_domname, p); } return False; } /**************************************************************************** Interpret a protocol description string, with a default. ****************************************************************************/ int interpret_protocol(const char *str,int def) { if (strequal(str,"NT1")) return(PROTOCOL_NT1); if (strequal(str,"LANMAN2")) return(PROTOCOL_LANMAN2); if (strequal(str,"LANMAN1")) return(PROTOCOL_LANMAN1); if (strequal(str,"CORE")) return(PROTOCOL_CORE); if (strequal(str,"COREPLUS")) return(PROTOCOL_COREPLUS); if (strequal(str,"CORE+")) return(PROTOCOL_COREPLUS); DEBUG(0,("Unrecognised protocol level %s\n",str)); return(def); } /**************************************************************************** Return true if a string could be a pure IP address. ****************************************************************************/ BOOL is_ipaddress(const char *str) { BOOL pure_address = True; int i; for (i=0; pure_address && str[i]; i++) if (!(isdigit((int)str[i]) || str[i] == '.')) pure_address = False; /* Check that a pure number is not misinterpreted as an IP */ pure_address = pure_address && (strchr_m(str, '.') != NULL); return pure_address; } /**************************************************************************** Interpret an internet address or name into an IP address in 4 byte form. ****************************************************************************/ uint32 interpret_addr(const char *str) { struct hostent *hp; uint32 res; if (strcmp(str,"0.0.0.0") == 0) return(0); if (strcmp(str,"255.255.255.255") == 0) return(0xFFFFFFFF); /* if it's in the form of an IP address then get the lib to interpret it */ if (is_ipaddress(str)) { res = inet_addr(str); } else { /* otherwise assume it's a network name of some sort and use sys_gethostbyname */ if ((hp = sys_gethostbyname(str)) == 0) { DEBUG(3,("sys_gethostbyname: Unknown host. %s\n",str)); return 0; } if(hp->h_addr == NULL) { DEBUG(3,("sys_gethostbyname: host address is invalid for host %s\n",str)); return 0; } putip((char *)&res,(char *)hp->h_addr); } if (res == (uint32)-1) return(0); return(res); } /******************************************************************* A convenient addition to interpret_addr(). ******************************************************************/ struct in_addr *interpret_addr2(const char *str) { static struct in_addr ret; uint32 a = interpret_addr(str); ret.s_addr = a; return(&ret); } /******************************************************************* Check if an IP is the 0.0.0.0. ******************************************************************/ BOOL is_zero_ip(struct in_addr ip) { uint32 a; putip((char *)&a,(char *)&ip); return(a == 0); } /******************************************************************* Set an IP to 0.0.0.0. ******************************************************************/ void zero_ip(struct in_addr *ip) { static BOOL init; static struct in_addr ipzero; if (!init) { ipzero = *interpret_addr2("0.0.0.0"); init = True; } *ip = ipzero; } #if (defined(HAVE_NETGROUP) && defined(WITH_AUTOMOUNT)) /****************************************************************** Remove any mount options such as -rsize=2048,wsize=2048 etc. Based on a fix from . *******************************************************************/ static void strip_mount_options( pstring *str) { if (**str == '-') { char *p = *str; while(*p && !isspace(*p)) p++; while(*p && isspace(*p)) p++; if(*p) { pstring tmp_str; pstrcpy(tmp_str, p); pstrcpy(*str, tmp_str); } } } /******************************************************************* Patch from jkf@soton.ac.uk Split Luke's automount_server into YP lookup and string splitter so can easily implement automount_path(). As we may end up doing both, cache the last YP result. *******************************************************************/ #ifdef WITH_NISPLUS_HOME char *automount_lookup( char *user_name) { static fstring last_key = ""; static pstring last_value = ""; char *nis_map = (char *)lp_nis_home_map_name(); char buffer[NIS_MAXATTRVAL + 1]; nis_result *result; nis_object *object; entry_obj *entry; if (strcmp(user_name, last_key)) { slprintf(buffer, sizeof(buffer)-1, "[key=%s],%s", user_name, nis_map); DEBUG(5, ("NIS+ querystring: %s\n", buffer)); if (result = nis_list(buffer, FOLLOW_PATH|EXPAND_NAME|HARD_LOOKUP, NULL, NULL)) { if (result->status != NIS_SUCCESS) { DEBUG(3, ("NIS+ query failed: %s\n", nis_sperrno(result->status))); fstrcpy(last_key, ""); pstrcpy(last_value, ""); } else { object = result->objects.objects_val; if (object->zo_data.zo_type == ENTRY_OBJ) { entry = &object->zo_data.objdata_u.en_data; DEBUG(5, ("NIS+ entry type: %s\n", entry->en_type)); DEBUG(3, ("NIS+ result: %s\n", entry->en_cols.en_cols_val[1].ec_value.ec_value_val)); pstrcpy(last_value, entry->en_cols.en_cols_val[1].ec_value.ec_value_val); pstring_sub(last_value, "&", user_name); fstrcpy(last_key, user_name); } } } nis_freeresult(result); } strip_mount_options(&last_value); DEBUG(4, ("NIS+ Lookup: %s resulted in %s\n", user_name, last_value)); return last_value; } #else /* WITH_NISPLUS_HOME */ char *automount_lookup( char *user_name) { static fstring last_key = ""; static pstring last_value = ""; int nis_error; /* returned by yp all functions */ char *nis_result; /* yp_match inits this */ int nis_result_len; /* and set this */ char *nis_domain; /* yp_get_default_domain inits this */ char *nis_map = (char *)lp_nis_home_map_name(); if ((nis_error = yp_get_default_domain(&nis_domain)) != 0) { DEBUG(3, ("YP Error: %s\n", yperr_string(nis_error))); return last_value; } DEBUG(5, ("NIS Domain: %s\n", nis_domain)); if (!strcmp(user_name, last_key)) { nis_result = last_value; nis_result_len = strlen(last_value); nis_error = 0; } else { if ((nis_error = yp_match(nis_domain, nis_map, user_name, strlen(user_name), &nis_result, &nis_result_len)) == 0) { if (!nis_error && nis_result_len >= sizeof(pstring)) { nis_result_len = sizeof(pstring)-1; } fstrcpy(last_key, user_name); strncpy(last_value, nis_result, nis_result_len); last_value[nis_result_len] = '\0'; strip_mount_options(&last_value); } else if(nis_error == YPERR_KEY) { /* If Key lookup fails user home server is not in nis_map use default information for server, and home directory */ last_value[0] = 0; DEBUG(3, ("YP Key not found: while looking up \"%s\" in map \"%s\"\n", user_name, nis_map)); DEBUG(3, ("using defaults for server and home directory\n")); } else { DEBUG(3, ("YP Error: \"%s\" while looking up \"%s\" in map \"%s\"\n", yperr_string(nis_error), user_name, nis_map)); } } DEBUG(4, ("YP Lookup: %s resulted in %s\n", user_name, last_value)); return last_value; } #endif /* WITH_NISPLUS_HOME */ #endif /******************************************************************* Are two IPs on the same subnet? ********************************************************************/ BOOL same_net(struct in_addr ip1,struct in_addr ip2,struct in_addr mask) { uint32 net1,net2,nmask; nmask = ntohl(mask.s_addr); net1 = ntohl(ip1.s_addr); net2 = ntohl(ip2.s_addr); return((net1 & nmask) == (net2 & nmask)); } /**************************************************************************** Check if a process exists. Does this work on all unixes? ****************************************************************************/ BOOL process_exists(pid_t pid) { /* Doing kill with a non-positive pid causes messages to be * sent to places we don't want. */ SMB_ASSERT(pid > 0); return(kill(pid,0) == 0 || errno != ESRCH); } /******************************************************************* Convert a uid into a user name. ********************************************************************/ const char *uidtoname(uid_t uid) { static fstring name; struct passwd *pass; pass = getpwuid_alloc(uid); if (pass) { fstrcpy(name, pass->pw_name); passwd_free(&pass); } else { slprintf(name, sizeof(name) - 1, "%ld",(long int)uid); } return name; } /******************************************************************* Convert a gid into a group name. ********************************************************************/ char *gidtoname(gid_t gid) { static fstring name; struct group *grp; grp = getgrgid(gid); if (grp) return(grp->gr_name); slprintf(name,sizeof(name) - 1, "%d",(int)gid); return(name); } /******************************************************************* Convert a user name into a uid. ********************************************************************/ uid_t nametouid(const char *name) { struct passwd *pass; char *p; uid_t u; pass = getpwnam_alloc(name); if (pass) { u = pass->pw_uid; passwd_free(&pass); return u; } u = (uid_t)strtol(name, &p, 0); if ((p != name) && (*p == '\0')) return u; return (uid_t)-1; } /******************************************************************* Convert a name to a gid_t if possible. Return -1 if not a group. ********************************************************************/ gid_t nametogid(const char *name) { struct group *grp; char *p; gid_t g; g = (gid_t)strtol(name, &p, 0); if ((p != name) && (*p == '\0')) return g; grp = sys_getgrnam(name); if (grp) return(grp->gr_gid); return (gid_t)-1; } /******************************************************************* legacy wrapper for smb_panic2() ********************************************************************/ void smb_panic( const char *why ) { smb_panic2( why, True ); } /******************************************************************* Something really nasty happened - panic ! ********************************************************************/ #ifdef HAVE_LIBEXC_H #include #endif void smb_panic2(const char *why, BOOL decrement_pid_count ) { char *cmd; int result; #ifdef HAVE_BACKTRACE_SYMBOLS void *backtrace_stack[BACKTRACE_STACK_SIZE]; size_t backtrace_size; char **backtrace_strings; #endif #ifdef DEVELOPER { if (global_clobber_region_function) { DEBUG(0,("smb_panic: clobber_region() last called from [%s(%u)]\n", global_clobber_region_function, global_clobber_region_line)); } } #endif /* only smbd needs to decrement the smbd counter in connections.tdb */ if ( decrement_pid_count ) decrement_smbd_process_count(); cmd = lp_panic_action(); if (cmd && *cmd) { DEBUG(0, ("smb_panic(): calling panic action [%s]\n", cmd)); result = system(cmd); if (result == -1) DEBUG(0, ("smb_panic(): fork failed in panic action: %s\n", strerror(errno))); else DEBUG(0, ("smb_panic(): action returned status %d\n", WEXITSTATUS(result))); } DEBUG(0,("PANIC: %s\n", why)); #ifdef HAVE_BACKTRACE_SYMBOLS /* get the backtrace (stack frames) */ backtrace_size = backtrace(backtrace_stack,BACKTRACE_STACK_SIZE); backtrace_strings = backtrace_symbols(backtrace_stack, backtrace_size); DEBUG(0, ("BACKTRACE: %lu stack frames:\n", (unsigned long)backtrace_size)); if (backtrace_strings) { int i; for (i = 0; i < backtrace_size; i++) DEBUGADD(0, (" #%u %s\n", i, backtrace_strings[i])); /* Leak the backtrace_strings, rather than risk what free() might do */ } #elif HAVE_LIBEXC #define NAMESIZE 32 /* Arbitrary */ /* The IRIX libexc library provides an API for unwinding the stack. See * libexc(3) for details. Apparantly trace_back_stack leaks memory, but * since we are about to abort anyway, it hardly matters. * * Note that if we paniced due to a SIGSEGV or SIGBUS (or similar) this * will fail with a nasty message upon failing to open the /proc entry. */ { __uint64_t addrs[BACKTRACE_STACK_SIZE]; char * names[BACKTRACE_STACK_SIZE]; char namebuf[BACKTRACE_STACK_SIZE * NAMESIZE]; int i; int levels; ZERO_ARRAY(addrs); ZERO_ARRAY(names); ZERO_ARRAY(namebuf); /* We need to be root so we can open our /proc entry to walk * our stack. It also helps when we want to dump core. */ become_root(); for (i = 0; i < BACKTRACE_STACK_SIZE; i++) { names[i] = namebuf + (i * NAMESIZE); } levels = trace_back_stack(0, addrs, names, BACKTRACE_STACK_SIZE, NAMESIZE - 1); DEBUG(0, ("BACKTRACE: %d stack frames:\n", levels)); for (i = 0; i < levels; i++) { DEBUGADD(0, (" #%d 0x%llx %s\n", i, addrs[i], names[i])); } } #undef NAMESIZE #endif dbgflush(); #ifdef SIGABRT CatchSignal(SIGABRT,SIGNAL_CAST SIG_DFL); #endif abort(); } /******************************************************************* A readdir wrapper which just returns the file name. ********************************************************************/ const char *readdirname(DIR *p) { SMB_STRUCT_DIRENT *ptr; char *dname; if (!p) return(NULL); ptr = (SMB_STRUCT_DIRENT *)sys_readdir(p); if (!ptr) return(NULL); dname = ptr->d_name; #ifdef NEXT2 if (telldir(p) < 0) return(NULL); #endif #ifdef HAVE_BROKEN_READDIR /* using /usr/ucb/cc is BAD */ dname = dname - 2; #endif { static pstring buf; int len = NAMLEN(ptr); memcpy(buf, dname, len); buf[len] = 0; dname = buf; } return(dname); } /******************************************************************* Utility function used to decide if the last component of a path matches a (possibly wildcarded) entry in a namelist. ********************************************************************/ BOOL is_in_path(const char *name, name_compare_entry *namelist, BOOL case_sensitive) { pstring last_component; char *p; /* if we have no list it's obviously not in the path */ if((namelist == NULL ) || ((namelist != NULL) && (namelist[0].name == NULL))) { return False; } DEBUG(8, ("is_in_path: %s\n", name)); /* Get the last component of the unix name. */ p = strrchr_m(name, '/'); strncpy(last_component, p ? ++p : name, sizeof(last_component)-1); last_component[sizeof(last_component)-1] = '\0'; for(; namelist->name != NULL; namelist++) { if(namelist->is_wild) { if (mask_match(last_component, namelist->name, case_sensitive)) { DEBUG(8,("is_in_path: mask match succeeded\n")); return True; } } else { if((case_sensitive && (strcmp(last_component, namelist->name) == 0))|| (!case_sensitive && (StrCaseCmp(last_component, namelist->name) == 0))) { DEBUG(8,("is_in_path: match succeeded\n")); return True; } } } DEBUG(8,("is_in_path: match not found\n")); return False; } /******************************************************************* Strip a '/' separated list into an array of name_compare_enties structures suitable for passing to is_in_path(). We do this for speed so we can pre-parse all the names in the list and don't do it for each call to is_in_path(). namelist is modified here and is assumed to be a copy owned by the caller. We also check if the entry contains a wildcard to remove a potentially expensive call to mask_match if possible. ********************************************************************/ void set_namearray(name_compare_entry **ppname_array, char *namelist) { char *name_end; char *nameptr = namelist; int num_entries = 0; int i; (*ppname_array) = NULL; if((nameptr == NULL ) || ((nameptr != NULL) && (*nameptr == '\0'))) return; /* We need to make two passes over the string. The first to count the number of elements, the second to split it. */ while(*nameptr) { if ( *nameptr == '/' ) { /* cope with multiple (useless) /s) */ nameptr++; continue; } /* find the next / */ name_end = strchr_m(nameptr, '/'); /* oops - the last check for a / didn't find one. */ if (name_end == NULL) break; /* next segment please */ nameptr = name_end + 1; num_entries++; } if(num_entries == 0) return; if(( (*ppname_array) = SMB_MALLOC_ARRAY(name_compare_entry, num_entries + 1)) == NULL) { DEBUG(0,("set_namearray: malloc fail\n")); return; } /* Now copy out the names */ nameptr = namelist; i = 0; while(*nameptr) { if ( *nameptr == '/' ) { /* cope with multiple (useless) /s) */ nameptr++; continue; } /* find the next / */ if ((name_end = strchr_m(nameptr, '/')) != NULL) *name_end = 0; /* oops - the last check for a / didn't find one. */ if(name_end == NULL) break; (*ppname_array)[i].is_wild = ms_has_wild(nameptr); if(((*ppname_array)[i].name = SMB_STRDUP(nameptr)) == NULL) { DEBUG(0,("set_namearray: malloc fail (1)\n")); return; } /* next segment please */ nameptr = name_end + 1; i++; } (*ppname_array)[i].name = NULL; return; } /**************************************************************************** Routine to free a namearray. ****************************************************************************/ void free_namearray(name_compare_entry *name_array) { int i; if(name_array == NULL) return; for(i=0; name_array[i].name!=NULL; i++) SAFE_FREE(name_array[i].name); SAFE_FREE(name_array); } /**************************************************************************** Simple routine to do POSIX file locking. Cruft in NFS and 64->32 bit mapping is dealt with in posix.c ****************************************************************************/ BOOL fcntl_lock(int fd, int op, SMB_OFF_T offset, SMB_OFF_T count, int type) { SMB_STRUCT_FLOCK lock; int ret; DEBUG(8,("fcntl_lock %d %d %.0f %.0f %d\n",fd,op,(double)offset,(double)count,type)); lock.l_type = type; lock.l_whence = SEEK_SET; lock.l_start = offset; lock.l_len = count; lock.l_pid = 0; ret = sys_fcntl_ptr(fd,op,&lock); if (ret == -1 && errno != 0) DEBUG(3,("fcntl_lock: fcntl lock gave errno %d (%s)\n",errno,strerror(errno))); /* a lock query */ if (op == SMB_F_GETLK) { if ((ret != -1) && (lock.l_type != F_UNLCK) && (lock.l_pid != 0) && (lock.l_pid != sys_getpid())) { DEBUG(3,("fcntl_lock: fd %d is locked by pid %d\n",fd,(int)lock.l_pid)); return(True); } /* it must be not locked or locked by me */ return(False); } /* a lock set or unset */ if (ret == -1) { DEBUG(3,("fcntl_lock: lock failed at offset %.0f count %.0f op %d type %d (%s)\n", (double)offset,(double)count,op,type,strerror(errno))); return(False); } /* everything went OK */ DEBUG(8,("fcntl_lock: Lock call successful\n")); return(True); } /******************************************************************* Is the name specified one of my netbios names. Returns true if it is equal, false otherwise. ********************************************************************/ BOOL is_myname(const char *s) { int n; BOOL ret = False; for (n=0; my_netbios_names(n); n++) { if (strequal(my_netbios_names(n), s)) { ret=True; break; } } DEBUG(8, ("is_myname(\"%s\") returns %d\n", s, ret)); return(ret); } BOOL is_myname_or_ipaddr(const char *s) { fstring name, dnsname; char *servername; if ( !s ) return False; /* santize the string from '\\name' */ fstrcpy( name, s ); servername = strrchr_m( name, '\\' ); if ( !servername ) servername = name; else servername++; /* optimize for the common case */ if (strequal(servername, global_myname())) return True; /* check for an alias */ if (is_myname(servername)) return True; /* check for loopback */ if (strequal(servername, "localhost")) return True; /* maybe it's my dns name */ if ( get_mydnsfullname( dnsname ) ) if ( strequal( servername, dnsname ) ) return True; /* handle possible CNAME records */ if ( !is_ipaddress( servername ) ) { /* use DNS to resolve the name, but only the first address */ struct hostent *hp; if (((hp = sys_gethostbyname(name)) != NULL) && (hp->h_addr != NULL)) { struct in_addr return_ip; putip( (char*)&return_ip, (char*)hp->h_addr ); fstrcpy( name, inet_ntoa( return_ip ) ); servername = name; } } /* maybe its an IP address? */ if (is_ipaddress(servername)) { struct iface_struct nics[MAX_INTERFACES]; int i, n; uint32 ip; ip = interpret_addr(servername); if ((ip==0) || (ip==0xffffffff)) return False; n = get_interfaces(nics, MAX_INTERFACES); for (i=0; i "Windows 2002 5.1" Win2k => "Windows 2000 5.0" NT4 => "Windows NT 4.0" Win9x => "Windows 4.0" Windows 2003 doesn't set the native lan manager string but they do set the domain to "Windows 2003 5.2" (probably a bug). ********************************************************************/ void ra_lanman_string( const char *native_lanman ) { if ( strcmp( native_lanman, "Windows 2002 5.1" ) == 0 ) set_remote_arch( RA_WINXP ); else if ( strcmp( native_lanman, "Windows Server 2003 5.2" ) == 0 ) set_remote_arch( RA_WIN2K3 ); } /******************************************************************* Set the horrid remote_arch string based on an enum. ********************************************************************/ void set_remote_arch(enum remote_arch_types type) { ra_type = type; switch( type ) { case RA_WFWG: fstrcpy(remote_arch, "WfWg"); break; case RA_OS2: fstrcpy(remote_arch, "OS2"); break; case RA_WIN95: fstrcpy(remote_arch, "Win95"); break; case RA_WINNT: fstrcpy(remote_arch, "WinNT"); break; case RA_WIN2K: fstrcpy(remote_arch, "Win2K"); break; case RA_WINXP: fstrcpy(remote_arch, "WinXP"); break; case RA_WIN2K3: fstrcpy(remote_arch, "Win2K3"); break; case RA_SAMBA: fstrcpy(remote_arch,"Samba"); break; case RA_CIFSFS: fstrcpy(remote_arch,"CIFSFS"); break; default: ra_type = RA_UNKNOWN; fstrcpy(remote_arch, "UNKNOWN"); break; } DEBUG(10,("set_remote_arch: Client arch is \'%s\'\n", remote_arch)); } /******************************************************************* Get the remote_arch type. ********************************************************************/ enum remote_arch_types get_remote_arch(void) { return ra_type; } void print_asc(int level, const unsigned char *buf,int len) { int i; for (i=0;i8) DEBUGADD(level,(" ")); while (n--) DEBUGADD(level,(" ")); n = MIN(8,i%16); print_asc(level,&buf[i-(i%16)],n); DEBUGADD(level,( " " )); n = (i%16) - n; if (n>0) print_asc(level,&buf[i-n],n); DEBUGADD(level,("\n")); } } void dump_data_pw(const char *msg, const uchar * data, size_t len) { #ifdef DEBUG_PASSWORD DEBUG(11, ("%s", msg)); if (data != NULL && len > 0) { dump_data(11, data, len); } #endif } char *tab_depth(int depth) { static pstring spaces; memset(spaces, ' ', depth * 4); spaces[depth * 4] = 0; return spaces; } /***************************************************************************** Provide a checksum on a string Input: s - the null-terminated character string for which the checksum will be calculated. Output: The checksum value calculated for s. *****************************************************************************/ int str_checksum(const char *s) { int res = 0; int c; int i=0; while(*s) { c = *s; res ^= (c << (i % 15)) ^ (c >> (15-(i%15))); s++; i++; } return(res); } /***************************************************************** Zero a memory area then free it. Used to catch bugs faster. *****************************************************************/ void zero_free(void *p, size_t size) { memset(p, 0, size); SAFE_FREE(p); } /***************************************************************** Set our open file limit to a requested max and return the limit. *****************************************************************/ int set_maxfiles(int requested_max) { #if (defined(HAVE_GETRLIMIT) && defined(RLIMIT_NOFILE)) struct rlimit rlp; int saved_current_limit; if(getrlimit(RLIMIT_NOFILE, &rlp)) { DEBUG(0,("set_maxfiles: getrlimit (1) for RLIMIT_NOFILE failed with error %s\n", strerror(errno) )); /* just guess... */ return requested_max; } /* * Set the fd limit to be real_max_open_files + MAX_OPEN_FUDGEFACTOR to * account for the extra fd we need * as well as the log files and standard * handles etc. Save the limit we want to set in case * we are running on an OS that doesn't support this limit (AIX) * which always returns RLIM_INFINITY for rlp.rlim_max. */ /* Try raising the hard (max) limit to the requested amount. */ #if defined(RLIM_INFINITY) if (rlp.rlim_max != RLIM_INFINITY) { int orig_max = rlp.rlim_max; if ( rlp.rlim_max < requested_max ) rlp.rlim_max = requested_max; /* This failing is not an error - many systems (Linux) don't support our default request of 10,000 open files. JRA. */ if(setrlimit(RLIMIT_NOFILE, &rlp)) { DEBUG(3,("set_maxfiles: setrlimit for RLIMIT_NOFILE for %d max files failed with error %s\n", (int)rlp.rlim_max, strerror(errno) )); /* Set failed - restore original value from get. */ rlp.rlim_max = orig_max; } } #endif /* Now try setting the soft (current) limit. */ saved_current_limit = rlp.rlim_cur = MIN(requested_max,rlp.rlim_max); if(setrlimit(RLIMIT_NOFILE, &rlp)) { DEBUG(0,("set_maxfiles: setrlimit for RLIMIT_NOFILE for %d files failed with error %s\n", (int)rlp.rlim_cur, strerror(errno) )); /* just guess... */ return saved_current_limit; } if(getrlimit(RLIMIT_NOFILE, &rlp)) { DEBUG(0,("set_maxfiles: getrlimit (2) for RLIMIT_NOFILE failed with error %s\n", strerror(errno) )); /* just guess... */ return saved_current_limit; } #if defined(RLIM_INFINITY) if(rlp.rlim_cur == RLIM_INFINITY) return saved_current_limit; #endif if((int)rlp.rlim_cur > saved_current_limit) return saved_current_limit; return rlp.rlim_cur; #else /* !defined(HAVE_GETRLIMIT) || !defined(RLIMIT_NOFILE) */ /* * No way to know - just guess... */ return requested_max; #endif } /***************************************************************** Splits out the start of the key (HKLM or HKU) and the rest of the key. *****************************************************************/ BOOL reg_split_key(const char *full_keyname, uint32 *reg_type, char *key_name) { pstring tmp; if (!next_token(&full_keyname, tmp, "\\", sizeof(tmp))) return False; (*reg_type) = 0; DEBUG(10, ("reg_split_key: hive %s\n", tmp)); if (strequal(tmp, "HKLM") || strequal(tmp, "HKEY_LOCAL_MACHINE")) (*reg_type) = HKEY_LOCAL_MACHINE; else if (strequal(tmp, "HKCR") || strequal(tmp, "HKEY_CLASSES_ROOT")) (*reg_type) = HKEY_CLASSES_ROOT; else if (strequal(tmp, "HKU") || strequal(tmp, "HKEY_USERS")) (*reg_type) = HKEY_USERS; else if (strequal(tmp, "HKPD")||strequal(tmp, "HKEY_PERFORMANCE_DATA")) (*reg_type) = HKEY_PERFORMANCE_DATA; else { DEBUG(10,("reg_split_key: unrecognised hive key %s\n", tmp)); return False; } if (next_token(&full_keyname, tmp, "\n\r", sizeof(tmp))) fstrcpy(key_name, tmp); else key_name[0] = 0; DEBUG(10, ("reg_split_key: name %s\n", key_name)); return True; } /***************************************************************** Possibly replace mkstemp if it is broken. *****************************************************************/ int smb_mkstemp(char *template) { #if HAVE_SECURE_MKSTEMP return mkstemp(template); #else /* have a reasonable go at emulating it. Hope that the system mktemp() isn't completly hopeless */ char *p = mktemp(template); if (!p) return -1; return open(p, O_CREAT|O_EXCL|O_RDWR, 0600); #endif } /***************************************************************** malloc that aborts with smb_panic on fail or zero size. *****************************************************************/ void *smb_xmalloc_array(size_t size, unsigned int count) { void *p; if (size == 0) smb_panic("smb_xmalloc_array: called with zero size.\n"); if (count >= MAX_ALLOC_SIZE/size) { smb_panic("smb_xmalloc: alloc size too large.\n"); } if ((p = SMB_MALLOC(size*count)) == NULL) { DEBUG(0, ("smb_xmalloc_array failed to allocate %lu * %lu bytes\n", (unsigned long)size, (unsigned long)count)); smb_panic("smb_xmalloc_array: malloc fail.\n"); } return p; } /** Memdup with smb_panic on fail. **/ void *smb_xmemdup(const void *p, size_t size) { void *p2; p2 = SMB_XMALLOC_ARRAY(unsigned char,size); memcpy(p2, p, size); return p2; } /** strdup that aborts on malloc fail. **/ char *smb_xstrdup(const char *s) { #if defined(PARANOID_MALLOC_CHECKER) #ifdef strdup #undef strdup #endif #endif char *s1 = strdup(s); #if defined(PARANOID_MALLOC_CHECKER) #define strdup(s) __ERROR_DONT_USE_STRDUP_DIRECTLY #endif if (!s1) smb_panic("smb_xstrdup: malloc fail\n"); return s1; } /** strndup that aborts on malloc fail. **/ char *smb_xstrndup(const char *s, size_t n) { #if defined(PARANOID_MALLOC_CHECKER) #ifdef strndup #undef strndup #endif #endif char *s1 = strndup(s, n); #if defined(PARANOID_MALLOC_CHECKER) #define strndup(s,n) __ERROR_DONT_USE_STRNDUP_DIRECTLY #endif if (!s1) smb_panic("smb_xstrndup: malloc fail\n"); return s1; } /* vasprintf that aborts on malloc fail */ int smb_xvasprintf(char **ptr, const char *format, va_list ap) { int n; va_list ap2; VA_COPY(ap2, ap); n = vasprintf(ptr, format, ap2); if (n == -1 || ! *ptr) smb_panic("smb_xvasprintf: out of memory"); return n; } /***************************************************************** Like strdup but for memory. *****************************************************************/ void *memdup(const void *p, size_t size) { void *p2; if (size == 0) return NULL; p2 = SMB_MALLOC(size); if (!p2) return NULL; memcpy(p2, p, size); return p2; } /***************************************************************** Get local hostname and cache result. *****************************************************************/ char *myhostname(void) { static pstring ret; if (ret[0] == 0) get_myname(ret); return ret; } /***************************************************************** A useful function for returning a path in the Samba lock directory. *****************************************************************/ char *lock_path(const char *name) { static pstring fname; pstrcpy(fname,lp_lockdir()); trim_char(fname,'\0','/'); if (!directory_exist(fname,NULL)) mkdir(fname,0755); pstrcat(fname,"/"); pstrcat(fname,name); return fname; } /***************************************************************** A useful function for returning a path in the Samba pid directory. *****************************************************************/ char *pid_path(const char *name) { static pstring fname; pstrcpy(fname,lp_piddir()); trim_char(fname,'\0','/'); if (!directory_exist(fname,NULL)) mkdir(fname,0755); pstrcat(fname,"/"); pstrcat(fname,name); return fname; } /** * @brief Returns an absolute path to a file in the Samba lib directory. * * @param name File to find, relative to LIBDIR. * * @retval Pointer to a static #pstring containing the full path. **/ char *lib_path(const char *name) { static pstring fname; fstr_sprintf(fname, "%s/%s", dyn_LIBDIR, name); return fname; } /** * @brief Returns the platform specific shared library extension. * * @retval Pointer to a static #fstring containing the extension. **/ const char *shlib_ext(void) { return dyn_SHLIBEXT; } /******************************************************************* Given a filename - get its directory name NB: Returned in static storage. Caveats: o Not safe in thread environment. o Caller must not free. o If caller wishes to preserve, they should copy. ********************************************************************/ char *parent_dirname(const char *path) { static pstring dirpath; char *p; if (!path) return(NULL); pstrcpy(dirpath, path); p = strrchr_m(dirpath, '/'); /* Find final '/', if any */ if (!p) { pstrcpy(dirpath, "."); /* No final "/", so dir is "." */ } else { if (p == dirpath) ++p; /* For root "/", leave "/" in place */ *p = '\0'; } return dirpath; } /******************************************************************* Determine if a pattern contains any Microsoft wildcard characters. *******************************************************************/ BOOL ms_has_wild(const char *s) { char c; while ((c = *s++)) { switch (c) { case '*': case '?': case '<': case '>': case '"': return True; } } return False; } BOOL ms_has_wild_w(const smb_ucs2_t *s) { smb_ucs2_t c; if (!s) return False; while ((c = *s++)) { switch (c) { case UCS2_CHAR('*'): case UCS2_CHAR('?'): case UCS2_CHAR('<'): case UCS2_CHAR('>'): case UCS2_CHAR('"'): return True; } } return False; } /******************************************************************* A wrapper that handles case sensitivity and the special handling of the ".." name. *******************************************************************/ BOOL mask_match(const char *string, char *pattern, BOOL is_case_sensitive) { if (strcmp(string,"..") == 0) string = "."; if (strcmp(pattern,".") == 0) return False; return ms_fnmatch(pattern, string, Protocol <= PROTOCOL_LANMAN2, is_case_sensitive) == 0; } /******************************************************************* A wrapper that handles case sensitivity and the special handling of the ".." name. Varient that is only called by old search code which requires pattern translation. *******************************************************************/ BOOL mask_match_search(const char *string, char *pattern, BOOL is_case_sensitive) { if (strcmp(string,"..") == 0) string = "."; if (strcmp(pattern,".") == 0) return False; return ms_fnmatch(pattern, string, True, is_case_sensitive) == 0; } /******************************************************************* A wrapper that handles a list of patters and calls mask_match() on each. Returns True if any of the patterns match. *******************************************************************/ BOOL mask_match_list(const char *string, char **list, int listLen, BOOL is_case_sensitive) { while (listLen-- > 0) { if (mask_match(string, *list++, is_case_sensitive)) return True; } return False; } /********************************************************* Recursive routine that is called by unix_wild_match. *********************************************************/ static BOOL unix_do_match(const char *regexp, const char *str) { const char *p; for( p = regexp; *p && *str; ) { switch(*p) { case '?': str++; p++; break; case '*': /* * Look for a character matching * the one after the '*'. */ p++; if(!*p) return True; /* Automatic match */ while(*str) { while(*str && (*p != *str)) str++; /* * Patch from weidel@multichart.de. In the case of the regexp * '*XX*' we want to ensure there are at least 2 'X' characters * in the string after the '*' for a match to be made. */ { int matchcount=0; /* * Eat all the characters that match, but count how many there were. */ while(*str && (*p == *str)) { str++; matchcount++; } /* * Now check that if the regexp had n identical characters that * matchcount had at least that many matches. */ while ( *(p+1) && (*(p+1) == *p)) { p++; matchcount--; } if ( matchcount <= 0 ) return False; } str--; /* We've eaten the match char after the '*' */ if(unix_do_match(p, str)) return True; if(!*str) return False; else str++; } return False; default: if(*str != *p) return False; str++; p++; break; } } if(!*p && !*str) return True; if (!*p && str[0] == '.' && str[1] == 0) return(True); if (!*str && *p == '?') { while (*p == '?') p++; return(!*p); } if(!*str && (*p == '*' && p[1] == '\0')) return True; return False; } /******************************************************************* Simple case insensitive interface to a UNIX wildcard matcher. *******************************************************************/ BOOL unix_wild_match(const char *pattern, const char *string) { pstring p2, s2; char *p; pstrcpy(p2, pattern); pstrcpy(s2, string); strlower_m(p2); strlower_m(s2); /* Remove any *? and ** from the pattern as they are meaningless */ for(p = p2; *p; p++) while( *p == '*' && (p[1] == '?' ||p[1] == '*')) pstrcpy( &p[1], &p[2]); if (strequal(p2,"*")) return True; return unix_do_match(p2, s2) == 0; } /********************************************************************** Converts a name to a fully qalified domain name. ***********************************************************************/ void name_to_fqdn(fstring fqdn, const char *name) { struct hostent *hp = sys_gethostbyname(name); if ( hp && hp->h_name && *hp->h_name ) { DEBUG(10,("name_to_fqdn: lookup for %s -> %s.\n", name, hp->h_name)); fstrcpy(fqdn,hp->h_name); } else { DEBUG(10,("name_to_fqdn: lookup for %s failed.\n", name)); fstrcpy(fqdn, name); } } #ifdef __INSURE__ /******************************************************************* This routine is a trick to immediately catch errors when debugging with insure. A xterm with a gdb is popped up when insure catches a error. It is Linux specific. ********************************************************************/ int _Insure_trap_error(int a1, int a2, int a3, int a4, int a5, int a6) { static int (*fn)(); int ret; char pidstr[10]; /* you can get /usr/bin/backtrace from http://samba.org/ftp/unpacked/junkcode/backtrace */ pstring cmd = "/usr/bin/backtrace %d"; slprintf(pidstr, sizeof(pidstr)-1, "%d", sys_getpid()); pstring_sub(cmd, "%d", pidstr); if (!fn) { static void *h; h = dlopen("/usr/local/parasoft/insure++lite/lib.linux2/libinsure.so", RTLD_LAZY); fn = dlsym(h, "_Insure_trap_error"); if (!h || h == _Insure_trap_error) { h = dlopen("/usr/local/parasoft/lib.linux2/libinsure.so", RTLD_LAZY); fn = dlsym(h, "_Insure_trap_error"); } } ret = fn(a1, a2, a3, a4, a5, a6); system(cmd); return ret; } #endif