/* Unix SMB/Netbios implementation. Version 1.9. Samba utility functions Copyright (C) Andrew Tridgell 1992-1998 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" #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 <rpcsvc/nis.h> #else /* !WITH_NISPLUS_HOME */ #include "rpcsvc/ypclnt.h" #endif /* WITH_NISPLUS_HOME */ #endif /* HAVE_NETGROUP && WITH_AUTOMOUNT */ #ifdef WITH_SSL #include <ssl.h> #undef Realloc /* SSLeay defines this and samba has a function of this name */ extern SSL *ssl; extern int sslFd; #endif /* WITH_SSL */ extern int DEBUGLEVEL; int 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; /* case handling on filenames */ int case_default = CASE_LOWER; /* the following control case operations - they are put here so the client can link easily */ BOOL case_sensitive; BOOL case_preserve; BOOL use_mangled_map = False; BOOL short_case_preserve; BOOL case_mangle; static enum remote_arch_types ra_type = RA_UNKNOWN; pstring user_socket_options=DEFAULT_SOCKET_OPTIONS; pstring global_myname = ""; fstring global_myworkgroup = ""; char **my_netbios_names; /**************************************************************************** find a suitable temporary directory. The result should be copied immediately as it may be overwritten by a subsequent call ****************************************************************************/ char *tmpdir(void) { char *p; if ((p = getenv("TMPDIR"))) { return p; } return "/tmp"; } /**************************************************************************** determine whether we are in the specified group ****************************************************************************/ BOOL in_group(gid_t group, gid_t current_gid, int ngroups, gid_t *groups) { int i; if (group == current_gid) return(True); for (i=0;i<ngroups;i++) if (group == groups[i]) return(True); return(False); } /**************************************************************************** like atoi but gets the value up to the separater character ****************************************************************************/ char *Atoic(char *p, int *n, char *c) { if (!isdigit((int)*p)) { DEBUG(5, ("Atoic: malformed number\n")); return NULL; } (*n) = atoi(p); while ((*p) && isdigit((int)*p)) { p++; } if (strchr(c, *p) == NULL) { DEBUG(5, ("Atoic: no separator characters (%s) not found\n", c)); return NULL; } return p; } /************************************************************************* reads a list of numbers *************************************************************************/ char *get_numlist(char *p, uint32 **num, int *count) { int val; if (num == NULL || count == NULL) { return NULL; } (*count) = 0; (*num ) = NULL; while ((p = Atoic(p, &val, ":,")) != NULL && (*p) != ':') { (*num) = Realloc((*num), ((*count)+1) * sizeof(uint32)); if ((*num) == NULL) { return NULL; } (*num)[(*count)] = val; (*count)++; p++; } return p; } /******************************************************************* check if a file exists - call vfs_file_exist for samba files ********************************************************************/ BOOL file_exist(char *fname,SMB_STRUCT_STAT *sbuf) { SMB_STRUCT_STAT st; if (!sbuf) sbuf = &st; if (sys_stat(fname,sbuf) != 0) return(False); return(S_ISREG(sbuf->st_mode)); } /******************************************************************* rename a unix file ********************************************************************/ int file_rename(char *from, char *to) { int rcode = rename (from, to); if (errno == EXDEV) { /* Rename across filesystems needed. */ rcode = copy_reg (from, to); } return rcode; } /******************************************************************* check a files mod time ********************************************************************/ time_t file_modtime(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 (DEBUGLEVEL < 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))); DEBUG(5,("smb_tid=%d\nsmb_pid=%d\nsmb_uid=%d\nsmb_mid=%d\nsmt_wct=%d\n", (int)SVAL(buf,smb_tid), (int)SVAL(buf,smb_pid), (int)SVAL(buf,smb_uid), (int)SVAL(buf,smb_mid), (int)CVAL(buf,smb_wct))); for (i=0;i<(int)CVAL(buf,smb_wct);i++) { DEBUG(5,("smb_vwv[%d]=%d (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))); DEBUG(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); CVAL(buf,4) = 0xFF; CVAL(buf,5) = 'S'; CVAL(buf,6) = 'M'; CVAL(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); CVAL(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); } /******************************************************************* 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(s,"\\..\\")) != NULL) { pstring s1; *p = 0; pstrcpy(s1,p+3); if ((p=strrchr(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(s,"/../")) != NULL) { pstring s1; *p = 0; pstrcpy(s1,p+3); if ((p=strrchr(s,'/')) != NULL) *p = 0; else *s = 0; pstrcat(s,s1); } trim_string(s,NULL,"/.."); } /**************************************************************************** make a dir struct ****************************************************************************/ void make_dir_struct(char *buf,char *mask,char *fname,SMB_OFF_T size,int mode,time_t date) { char *p; pstring mask2; pstrcpy(mask2,mask); if ((mode & aDIR) != 0) size = 0; memset(buf+1,' ',11); if ((p = strchr(mask2,'.')) != NULL) { *p = 0; memcpy(buf+1,mask2,MIN(strlen(mask2),8)); memcpy(buf+9,p+1,MIN(strlen(p+1),3)); *p = '.'; } else memcpy(buf+1,mask2,MIN(strlen(mask2),11)); memset(buf+21,'\0',DIR_STRUCT_SIZE-21); CVAL(buf,21) = mode; put_dos_date(buf,22,date); SSVAL(buf,26,size & 0xFFFF); SSVAL(buf,28,(size >> 16)&0xFFFF); StrnCpy(buf+30,fname,12); if (!case_sensitive) strupper(buf+30); DEBUG(8,("put name [%s] into dir struct\n",buf+30)); } /******************************************************************* close the low 3 fd's and open dev/null in their place ********************************************************************/ void close_low_fds(void) { int fd; int i; close(0); close(1); #ifndef __INSURE__ close(2); #endif /* 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++) { 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; } } } /**************************************************************************** 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 = fcntl(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 fcntl( fd, F_SETFL, val); #undef FLAG_TO_SET } /**************************************************************************** transfer some data between two fd's ****************************************************************************/ SMB_OFF_T transfer_file(int infd,int outfd,SMB_OFF_T n,char *header,int headlen,int align) { static char *buf=NULL; static int size=0; char *buf1,*abuf; SMB_OFF_T total = 0; DEBUG(4,("transfer_file n=%.0f (head=%d) called\n",(double)n,headlen)); if (size == 0) { size = lp_readsize(); size = MAX(size,1024); } while (!buf && size>0) { buf = (char *)Realloc(buf,size+8); if (!buf) size /= 2; } if (!buf) { DEBUG(0,("Can't allocate transfer buffer!\n")); exit(1); } abuf = buf + (align%8); if (header) n += headlen; while (n > 0) { int s = (int)MIN(n,(SMB_OFF_T)size); int ret,ret2=0; ret = 0; if (header && (headlen >= MIN(s,1024))) { buf1 = header; s = headlen; ret = headlen; headlen = 0; header = NULL; } else { buf1 = abuf; } if (header && headlen > 0) { ret = MIN(headlen,size); memcpy(buf1,header,ret); headlen -= ret; header += ret; if (headlen <= 0) header = NULL; } if (s > ret) ret += read(infd,buf1+ret,s-ret); if (ret > 0) { ret2 = (outfd>=0?write_data(outfd,buf1,ret):ret); if (ret2 > 0) total += ret2; /* if we can't write then dump excess data */ if (ret2 != ret) transfer_file(infd,-1,n-(ret+headlen),NULL,0,0); } if (ret <= 0 || ret2 != ret) return(total); n -= ret; } return(total); } /******************************************************************* sleep for a specified number of milliseconds ********************************************************************/ void msleep(int t) { int tdiff=0; struct timeval tval,t1,t2; fd_set fds; GetTimeOfDay(&t1); GetTimeOfDay(&t2); while (tdiff < t) { tval.tv_sec = (t-tdiff)/1000; tval.tv_usec = 1000*((t-tdiff)%1000); FD_ZERO(&fds); errno = 0; sys_select_intr(0,&fds,&tval); GetTimeOfDay(&t2); tdiff = TvalDiff(&t1,&t2); } } /**************************************************************************** become a daemon, discarding the controlling terminal ****************************************************************************/ void become_daemon(void) { 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(); } /**************************************************************************** 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); } /**************************************************************************** set the length of a file from a filedescriptor. Returns 0 on success, -1 on failure. ****************************************************************************/ /* tpot vfs need to recode this function */ int set_filelen(int fd, SMB_OFF_T len) { /* According to W. R. Stevens advanced UNIX prog. Pure 4.3 BSD cannot extend a file with ftruncate. Provide alternate implementation for this */ #ifdef HAVE_FTRUNCATE_EXTEND return sys_ftruncate(fd, len); #else SMB_STRUCT_STAT st; char c = 0; SMB_OFF_T currpos = sys_lseek(fd, (SMB_OFF_T)0, SEEK_CUR); if(currpos == -1) return -1; /* Do an fstat to see if the file is longer than the requested size (call ftruncate), or shorter, in which case seek to len - 1 and write 1 byte of zero */ if(sys_fstat(fd, &st)<0) return -1; #ifdef S_ISFIFO if (S_ISFIFO(st.st_mode)) return 0; #endif if(st.st_size == len) return 0; if(st.st_size > len) return sys_ftruncate(fd, len); if(sys_lseek(fd, len-1, SEEK_SET) != len -1) return -1; if(write(fd, &c, 1)!=1) return -1; /* Seek to where we were */ if(sys_lseek(fd, currpos, SEEK_SET) != currpos) return -1; return 0; #endif } #ifdef HPUX /**************************************************************************** this is a version of setbuffer() for those machines that only have setvbuf ****************************************************************************/ void setbuffer(FILE *f,char *buf,int bufsize) { setvbuf(f,buf,_IOFBF,bufsize); } #endif /**************************************************************************** expand a pointer to be a particular size ****************************************************************************/ void *Realloc(void *p,size_t size) { void *ret=NULL; if (size == 0) { if (p) free(p); DEBUG(5,("Realloc asked for 0 bytes\n")); return NULL; } if (!p) ret = (void *)malloc(size); else ret = (void *)realloc(p,size); if (!ret) DEBUG(0,("Memory allocation error: failed to expand to %d bytes\n",(int)size)); return(ret); } /**************************************************************************** free memory, checks for NULL ****************************************************************************/ void safe_free(void *p) { if (p != NULL) { 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(hostname,'.'); if (p) *p = 0; fstrcpy(my_name,hostname); } return(True); } /**************************************************************************** interpret a protocol description string, with a default ****************************************************************************/ int interpret_protocol(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(str, '.') != NULL); return pure_address; } /**************************************************************************** interpret an internet address or name into an IP address in 4 byte form ****************************************************************************/ uint32 interpret_addr(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 Get_Hostbyname */ if ((hp = Get_Hostbyname(str)) == 0) { DEBUG(3,("Get_Hostbyname: Unknown host. %s\n",str)); return 0; } if(hp->h_addr == NULL) { DEBUG(3,("Get_Hostbyname: 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(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 zero_ip(struct in_addr ip) { uint32 a; putip((char *)&a,(char *)&ip); return(a == 0); } #if (defined(HAVE_NETGROUP) && defined(WITH_AUTOMOUNT)) /****************************************************************** Remove any mount options such as -rsize=2048,wsize=2048 etc. Based on a fix from <Thomas.Hepper@icem.de>. *******************************************************************/ 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 static char *automount_lookup(char *user_name) { static fstring last_key = ""; static pstring last_value = ""; char *nis_map = (char *)lp_nis_home_map_name(); char nis_domain[NIS_MAXNAMELEN + 1]; char buffer[NIS_MAXATTRVAL + 1]; nis_result *result; nis_object *object; entry_obj *entry; strncpy(nis_domain, (char *)nis_local_directory(), NIS_MAXNAMELEN); nis_domain[NIS_MAXNAMELEN] = '\0'; DEBUG(5, ("NIS+ Domain: %s\n", nis_domain)); if (strcmp(user_name, last_key)) { slprintf(buffer, sizeof(buffer)-1, "[%s=%s]%s.%s", "key", user_name, nis_map, nis_domain); DEBUG(5, ("NIS+ querystring: %s\n", buffer)); if (result = nis_list(buffer, RETURN_RESULT, 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 */ static 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) { DEBUG(3, ("YP Error: \"%s\" while looking up \"%s\" in map \"%s\"\n", yperr_string(nis_error), user_name, nis_map)); } 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); 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)); } /**************************************************************************** a wrapper for gethostbyname() that tries with all lower and all upper case if the initial name fails ****************************************************************************/ struct hostent *Get_Hostbyname(const char *name) { char *name2 = strdup(name); struct hostent *ret; if (!name2) { DEBUG(0,("Memory allocation error in Get_Hostbyname! panic\n")); exit(0); } /* * This next test is redundent and causes some systems (with * broken isalnum() calls) problems. * JRA. */ #if 0 if (!isalnum(*name2)) { free(name2); return(NULL); } #endif /* 0 */ ret = sys_gethostbyname(name2); if (ret != NULL) { free(name2); return(ret); } /* try with all lowercase */ strlower(name2); ret = sys_gethostbyname(name2); if (ret != NULL) { free(name2); return(ret); } /* try with all uppercase */ strupper(name2); ret = sys_gethostbyname(name2); if (ret != NULL) { free(name2); return(ret); } /* nothing works :-( */ free(name2); return(NULL); } /**************************************************************************** check if a process exists. Does this work on all unixes? ****************************************************************************/ BOOL process_exists(pid_t pid) { return(kill(pid,0) == 0 || errno != ESRCH); } /******************************************************************* Convert a uid into a user name. ********************************************************************/ char *uidtoname(uid_t uid) { static fstring name; struct passwd *pass; if (winbind_uidtoname(name, uid)) return name; pass = sys_getpwuid(uid); if (pass) return(pass->pw_name); slprintf(name, sizeof(name) - 1, "%d",(int)uid); return(name); } /******************************************************************* Convert a gid into a group name. ********************************************************************/ char *gidtoname(gid_t gid) { static fstring name; struct group *grp; if (winbind_gidtoname(name, gid)) return name; 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. If winbindd is present uses this. ********************************************************************/ uid_t nametouid(char *name) { struct passwd *pass; char *p; uid_t u; u = (uid_t)strtol(name, &p, 0); if (p != name) return u; if (winbind_nametouid(&u, name)) return u; pass = sys_getpwnam(name); if (pass) return(pass->pw_uid); return (uid_t)-1; } /******************************************************************* Convert a name to a gid_t if possible. Return -1 if not a group. If winbindd is present does a shortcut lookup... ********************************************************************/ gid_t nametogid(char *name) { struct group *grp; char *p; gid_t g; g = (gid_t)strtol(name, &p, 0); if (p != name) return g; if (winbind_nametogid(&g, name)) return g; grp = getgrnam(name); if (grp) return(grp->gr_gid); return (gid_t)-1; } /******************************************************************* something really nasty happened - panic! ********************************************************************/ void smb_panic(char *why) { char *cmd = lp_panic_action(); if (cmd && *cmd) { system(cmd); } DEBUG(0,("PANIC: %s\n", why)); dbgflush(); abort(); } /******************************************************************* a readdir wrapper which just returns the file name ********************************************************************/ 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; memcpy(buf, dname, NAMLEN(ptr)+1); 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(char *name, name_compare_entry *namelist) { pstring last_component; char *p; DEBUG(8, ("is_in_path: %s\n", name)); /* if we have no list it's obviously not in the path */ if((namelist == NULL ) || ((namelist != NULL) && (namelist[0].name == NULL))) { DEBUG(8,("is_in_path: no name list.\n")); return False; } /* Get the last component of the unix name. */ p = strrchr(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(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) = (name_compare_entry *)malloc( (num_entries + 1) * sizeof(name_compare_entry))) == 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(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 = 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) { if(name_array == 0) return; if(name_array->name != NULL) free(name_array->name); free((char *)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; errno = 0; ret = fcntl(fd,op,&lock); if (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 is it is equal, false otherwise ********************************************************************/ BOOL is_myname(char *s) { int n; BOOL ret = False; for (n=0; my_netbios_names[n]; n++) { if (strequal(my_netbios_names[n], s)) ret=True; } DEBUG(8, ("is_myname(\"%s\") returns %d\n", s, ret)); return(ret); } /******************************************************************* set the horrid remote_arch string based on an enum. ********************************************************************/ void set_remote_arch(enum remote_arch_types type) { extern fstring remote_arch; ra_type = type; switch( type ) { case RA_WFWG: fstrcpy(remote_arch, "WfWg"); return; case RA_OS2: fstrcpy(remote_arch, "OS2"); return; case RA_WIN95: fstrcpy(remote_arch, "Win95"); return; case RA_WINNT: fstrcpy(remote_arch, "WinNT"); return; case RA_WIN2K: fstrcpy(remote_arch, "Win2K"); return; case RA_SAMBA: fstrcpy(remote_arch,"Samba"); return; default: ra_type = RA_UNKNOWN; fstrcpy(remote_arch, "UNKNOWN"); break; } } /******************************************************************* Get the remote_arch type. ********************************************************************/ enum remote_arch_types get_remote_arch(void) { return ra_type; } void out_ascii(FILE *f, unsigned char *buf,int len) { int i; for (i=0;i<len;i++) { fprintf(f, "%c", isprint(buf[i])?buf[i]:'.'); } } void out_data(FILE *f,char *buf1,int len, int per_line) { unsigned char *buf = (unsigned char *)buf1; int i=0; if (len<=0) { return; } fprintf(f, "[%03X] ",i); for (i=0;i<len;) { fprintf(f, "%02X ",(int)buf[i]); i++; if (i%(per_line/2) == 0) fprintf(f, " "); if (i%per_line == 0) { out_ascii(f,&buf[i-per_line ],per_line/2); fprintf(f, " "); out_ascii(f,&buf[i-per_line/2],per_line/2); fprintf(f, "\n"); if (i<len) fprintf(f, "[%03X] ",i); } } if ((i%per_line) != 0) { int n; n = per_line - (i%per_line); fprintf(f, " "); if (n>(per_line/2)) fprintf(f, " "); while (n--) { fprintf(f, " "); } n = MIN(per_line/2,i%per_line); out_ascii(f,&buf[i-(i%per_line)],n); fprintf(f, " "); n = (i%per_line) - n; if (n>0) out_ascii(f,&buf[i-n],n); fprintf(f, "\n"); } } void print_asc(int level, unsigned char *buf,int len) { int i; for (i=0;i<len;i++) DEBUG(level,("%c", isprint(buf[i])?buf[i]:'.')); } void dump_data(int level,char *buf1,int len) { unsigned char *buf = (unsigned char *)buf1; int i=0; if (len<=0) return; DEBUG(level,("[%03X] ",i)); for (i=0;i<len;) { DEBUG(level,("%02X ",(int)buf[i])); i++; if (i%8 == 0) DEBUG(level,(" ")); if (i%16 == 0) { print_asc(level,&buf[i-16],8); DEBUG(level,(" ")); print_asc(level,&buf[i-8],8); DEBUG(level,("\n")); if (i<len) DEBUG(level,("[%03X] ",i)); } } if (i%16) { int n; n = 16 - (i%16); DEBUG(level,(" ")); if (n>8) DEBUG(level,(" ")); while (n--) DEBUG(level,(" ")); n = MIN(8,i%16); print_asc(level,&buf[i-(i%16)],n); DEBUG(level,(" ")); n = (i%16) - n; if (n>0) print_asc(level,&buf[i-n],n); DEBUG(level,("\n")); } } 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); } /* str_checksum */ /***************************************************************** zero a memory area then free it. Used to catch bugs faster *****************************************************************/ void zero_free(void *p, size_t size) { memset(p, 0, size); 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. */ 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(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, "HKU") || strequal(tmp, "HKEY_USERS")) { (*reg_type) = HKEY_USERS; } else { DEBUG(10,("reg_split_key: unrecognised hive key %s\n", tmp)); return False; } if (next_token(NULL, 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; } /***************************************************************** like mktemp() but make sure that no % characters are used % characters are bad for us because of the macro subs *****************************************************************/ char *smbd_mktemp(char *template) { char *p = mktemp(template); char *p2; SMB_STRUCT_STAT st; if (!p) return NULL; while ((p2=strchr(p,'%'))) { p2[0] = 'A'; while (sys_stat(p,&st) == 0 && p2[0] < 'Z') { /* damn, it exists */ p2[0]++; } if (p2[0] == 'Z') { /* oh well ... better return something */ p2[0] = '%'; return p; } } return p; } /***************************************************************** like strdup but for memory *****************************************************************/ void *memdup(void *p, size_t size) { void *p2; if (size == 0) return NULL; p2 = 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(char *name) { static pstring fname; pstrcpy(fname,lp_lockdir()); trim_string(fname,"","/"); if (!directory_exist(fname,NULL)) { mkdir(fname,0755); } pstrcat(fname,"/"); pstrcat(fname,name); return fname; } /******************************************************************* 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(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(char *s) { char c; while ((c = *s++)) { switch (c) { case '*': case '?': case '<': case '>': case '"': return True; } } return False; } /******************************************************************* a wrapper that handles case sensitivity and the special handling of the ".." name *******************************************************************/ BOOL mask_match(char *string, char *pattern, BOOL is_case_sensitive) { fstring p2, s2; if (strcmp(string,"..") == 0) string = "."; if (strcmp(pattern,".") == 0) return False; if (is_case_sensitive) { return ms_fnmatch(pattern, string) == 0; } fstrcpy(p2, pattern); fstrcpy(s2, string); strlower(p2); strlower(s2); return ms_fnmatch(p2, s2) == 0; } #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]; pstring cmd = "/usr/X11R6/bin/xterm -display :0 -T Panic -n Panic -e /bin/sh -c 'cat /tmp/ierrs.*.%d ; gdb /proc/%d/exe %d'"; slprintf(pidstr, sizeof(pidstr), "%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"); } ret = fn(a1, a2, a3, a4, a5, a6); system(cmd); return ret; } #endif