/* Unix SMB/Netbios implementation. Version 1.9. Password and authentication handling Copyright (C) Jeremy Allison 1996-1998 Copyright (C) Luke Kenneth Casson Leighton 1996-1998 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" #include "nterr.h" extern int DEBUGLEVEL; /* * This is set on startup - it defines the SID for this * machine. */ DOM_SID global_machine_sid; /* * NOTE. All these functions are abstracted into a structure * that points to the correct function for the selected database. JRA. * * NOTE. for the get/mod/add functions, there are two sets of functions. * one supports struct sam_passwd, the other supports struct smb_passwd. * for speed optimisation it is best to support both these sets. * * it is, however, optional to support one set but not the other: there * is conversion-capability built in to passdb.c, and run-time error * detection for when neither are supported. * * password database writers are recommended to implement the sam_passwd * functions in a first pass, as struct sam_passwd contains more * information, needed by the NT Domain support. * * a full example set of derivative functions are listed below. an API * writer is expected to cut/paste these into their module, replace * either one set (struct smb_passwd) or the other (struct sam_passwd) * OR both, and optionally also to write display info routines * (struct sam_disp_info). lkcl * */ #if 0 static struct smb_passwd *getPDBpwent (void *vp) { return pdb_sam_to_smb(getPDB21pwent(vp)); } static BOOL add_PDBpwd_entry (struct smb_passwd *newpwd) { return add_PDB21pwd_entry(pdb_smb_to_sam(newpwd)); } static BOOL mod_PDBpwd_entry (struct smb_passwd* pwd, BOOL override) { return mod_PDB21pwd_entry(pdb_smb_to_sam(pwd), override); } static struct smb_passwd *getPDBpwnam (char *name) { return pdb_sam_to_smb(getPDB21pwnam(name)); } static struct smb_passwd *getPDBpwuid (uid_t smb_userid) { return pdb_sam_to_smb(getPDB21pwuid(pdb_uid_to_user_rid(smb_userid))); } static struct sam_passwd *getPDB21pwent (void *vp) { return pdb_smb_to_sam(getPDBpwent(vp)); } static BOOL add_PDB21pwd_entry (struct sam_passwd *newpwd) { return add_PDBpwd_entry(pdb_sam_to_smb(newpwd)); } static BOOL mod_PDB21pwd_entry (struct sam_passwd* pwd, BOOL override) { return mod_PDBpwd_entry(pdb_sam_to_smb(pwd), override); } static struct sam_passwd *getPDB21pwnam (char *name) { return pdb_smb_to_sam(getPDBpwnam(name)); } static struct sam_passwd *getPDB21pwrid (uint32 rid) { return pdb_smb_to_sam(getPDBpwuid(pdb_user_rid_to_uid(rid))); } static struct sam_passwd *getPDB21pwuid (uid_t uid) { return pdb_smb_to_sam(getPDBpwuid(uid)); } static struct sam_disp_info *getPDBdispnam (char *name) { return pdb_sam_to_dispinfo(getPDB21pwnam(name)); } static struct sam_disp_info *getPDBdisprid (uint32 rid) { return pdb_sam_to_dispinfo(getPDB21pwrid(rid)); } static struct sam_disp_info *getPDBdispent (void *vp) { return pdb_sam_to_dispinfo(getPDB21pwent(vp)); } #endif /* 0 */ static struct passdb_ops *pdb_ops; /*************************************************************** Initialize the password db operations. ***************************************************************/ BOOL initialize_password_db(void) { if (pdb_ops) { return True; } #ifdef USE_NISPLUS_DB pdb_ops = nisplus_initialize_password_db(); #endif /* USE_NISPLUS_DB */ #ifdef USE_LDAP_DB pdb_ops = ldap_initialize_password_db(); #endif /* USE_LDAP_DB */ #ifdef USE_SMBPASS_DB pdb_ops = file_initialize_password_db(); #endif /* USE_SMBPASS_DB */ return (pdb_ops != NULL); } /* * Functions that return/manipulate a struct smb_passwd. */ /************************************************************************ Utility function to search smb passwd by uid. use this if your database does not have search facilities. *************************************************************************/ struct smb_passwd *iterate_getsmbpwuid(uid_t smb_userid) { struct smb_passwd *pwd = NULL; void *fp = NULL; DEBUG(10, ("iterate_getsmbpwuid: search by smb_userid: %x\n", smb_userid)); /* Open the smb password database - not for update. */ fp = startsmbpwent(False); if (fp == NULL) { DEBUG(0, ("iterate_getsmbpwuid: unable to open smb password database.\n")); return NULL; } while ((pwd = getsmbpwent(fp)) != NULL && pwd->smb_userid != smb_userid) ; if (pwd != NULL) { DEBUG(10, ("iterate_getsmbpwuid: found by smb_userid: %x\n", smb_userid)); } endsmbpwent(fp); return pwd; } /************************************************************************ Utility function to search smb passwd by name. use this if your database does not have search facilities. *************************************************************************/ struct smb_passwd *iterate_getsmbpwnam(char *name) { struct smb_passwd *pwd = NULL; void *fp = NULL; DEBUG(10, ("iterate_getsmbpwnam: search by name: %s\n", name)); /* Open the sam password file - not for update. */ fp = startsmbpwent(False); if (fp == NULL) { DEBUG(0, ("iterate_getsmbpwnam: unable to open smb password database.\n")); return NULL; } while ((pwd = getsmbpwent(fp)) != NULL && !strequal(pwd->smb_name, name)) ; if (pwd != NULL) { DEBUG(10, ("iterate_getsmbpwnam: found by name: %s\n", name)); } endsmbpwent(fp); return pwd; } /*************************************************************** Start to enumerate the smb or sam passwd list. Returns a void pointer to ensure no modification outside this module. Note that currently it is being assumed that a pointer returned from this function may be used to enumerate struct sam_passwd entries as well as struct smb_passwd entries. This may need to change. JRA. ****************************************************************/ void *startsmbpwent(BOOL update) { return pdb_ops->startsmbpwent(update); } /*************************************************************** End enumeration of the smb or sam passwd list. Note that currently it is being assumed that a pointer returned from this function may be used to enumerate struct sam_passwd entries as well as struct smb_passwd entries. This may need to change. JRA. ****************************************************************/ void endsmbpwent(void *vp) { pdb_ops->endsmbpwent(vp); } /************************************************************************* Routine to return the next entry in the smb passwd list. *************************************************************************/ struct smb_passwd *getsmbpwent(void *vp) { return pdb_ops->getsmbpwent(vp); } /************************************************************************* Return the current position in the smb passwd list as an unsigned long. This must be treated as an opaque token. Note that currently it is being assumed that a pointer returned from this function may be used to enumerate struct sam_passwd entries as well as struct smb_passwd entries. This may need to change. JRA. *************************************************************************/ unsigned long getsmbpwpos(void *vp) { return pdb_ops->getsmbpwpos(vp); } /************************************************************************* Set the current position in the smb passwd list from unsigned long. This must be treated as an opaque token. Note that currently it is being assumed that a pointer returned from this function may be used to enumerate struct sam_passwd entries as well as struct smb_passwd entries. This may need to change. JRA. *************************************************************************/ BOOL setsmbpwpos(void *vp, unsigned long tok) { return pdb_ops->setsmbpwpos(vp, tok); } /************************************************************************ Routine to add an entry to the smb passwd file. *************************************************************************/ BOOL add_smbpwd_entry(struct smb_passwd *newpwd) { return pdb_ops->add_smbpwd_entry(newpwd); } /************************************************************************ Routine to search the smb passwd file for an entry matching the username. and then modify its password entry. We can't use the startsampwent()/ getsampwent()/endsampwent() interfaces here as we depend on looking in the actual file to decide how much room we have to write data. override = False, normal override = True, override XXXXXXXX'd out password or NO PASS ************************************************************************/ BOOL mod_smbpwd_entry(struct smb_passwd* pwd, BOOL override) { return pdb_ops->mod_smbpwd_entry(pwd, override); } /************************************************************************ Routine to search smb passwd by name. *************************************************************************/ struct smb_passwd *getsmbpwnam(char *name) { return pdb_ops->getsmbpwnam(name); } /************************************************************************ Routine to search smb passwd by uid. *************************************************************************/ struct smb_passwd *getsmbpwuid(uid_t smb_userid) { return pdb_ops->getsmbpwuid(smb_userid); } /* * Functions that manupulate a struct sam_passwd. */ /************************************************************************ Utility function to search sam passwd by name. use this if your database does not have search facilities. *************************************************************************/ struct sam_passwd *iterate_getsam21pwnam(char *name) { struct sam_passwd *pwd = NULL; void *fp = NULL; DEBUG(10, ("iterate_getsam21pwnam: search by name: %s\n", name)); /* Open the smb password database - not for update. */ fp = startsmbpwent(False); if (fp == NULL) { DEBUG(0, ("iterate_getsam21pwnam: unable to open sam password database.\n")); return NULL; } while ((pwd = getsam21pwent(fp)) != NULL && !strequal(pwd->smb_name, name)) ; if (pwd != NULL) { DEBUG(10, ("iterate_getsam21pwnam: found by name: %s\n", name)); } endsmbpwent(fp); return pwd; } /************************************************************************ Utility function to search sam passwd by rid. use this if your database does not have search facilities. search capability by both rid and uid are needed as the rid <-> uid mapping may be non-monotonic. *************************************************************************/ struct sam_passwd *iterate_getsam21pwrid(uint32 rid) { struct sam_passwd *pwd = NULL; void *fp = NULL; DEBUG(10, ("iterate_getsam21pwrid: search by rid: %x\n", rid)); /* Open the smb password file - not for update. */ fp = startsmbpwent(False); if (fp == NULL) { DEBUG(0, ("iterate_getsam21pwrid: unable to open sam password database.\n")); return NULL; } while ((pwd = getsam21pwent(fp)) != NULL && pwd->user_rid != rid) ; if (pwd != NULL) { DEBUG(10, ("iterate_getsam21pwrid: found by user_rid: %x\n", rid)); } endsmbpwent(fp); return pwd; } /************************************************************************ Utility function to search sam passwd by uid. use this if your database does not have search facilities. search capability by both rid and uid are needed as the rid <-> uid mapping may be non-monotonic. *************************************************************************/ struct sam_passwd *iterate_getsam21pwuid(uid_t uid) { struct sam_passwd *pwd = NULL; void *fp = NULL; DEBUG(10, ("iterate_getsam21pwuid: search by uid: %x\n", uid)); /* Open the smb password file - not for update. */ fp = startsmbpwent(False); if (fp == NULL) { DEBUG(0, ("iterate_getsam21pwuid: unable to open sam password database.\n")); return NULL; } while ((pwd = getsam21pwent(fp)) != NULL && pwd->smb_userid != uid) ; if (pwd != NULL) { DEBUG(10, ("iterate_getsam21pwuid: found by smb_userid: %x\n", uid)); } endsmbpwent(fp); return pwd; } /************************************************************************* Routine to return a display info structure, by name *************************************************************************/ struct sam_disp_info *getsamdispnam(char *name) { return pdb_ops->getsamdispnam(name); } /************************************************************************* Routine to return a display info structure, by rid *************************************************************************/ struct sam_disp_info *getsamdisprid(uint32 rid) { return pdb_ops->getsamdisprid(rid); } /************************************************************************* Routine to return the next entry in the sam passwd list. *************************************************************************/ struct sam_disp_info *getsamdispent(void *vp) { return pdb_ops->getsamdispent(vp); } /************************************************************************* Routine to return the next entry in the sam passwd list. *************************************************************************/ struct sam_passwd *getsam21pwent(void *vp) { return pdb_ops->getsam21pwent(vp); } /************************************************************************ Routine to add an entry to the sam passwd file. *************************************************************************/ BOOL add_sam21pwd_entry(struct sam_passwd *newpwd) { return pdb_ops->add_sam21pwd_entry(newpwd); } /************************************************************************ Routine to search the sam passwd database for an entry matching the username. and then modify its password entry. We can't use the startsampwent()/ getsampwent()/endsampwent() interfaces here as we depend on looking in the actual file to decide how much room we have to write data. override = False, normal override = True, override XXXXXXXX'd out password or NO PASS ************************************************************************/ BOOL mod_sam21pwd_entry(struct sam_passwd* pwd, BOOL override) { return pdb_ops->mod_sam21pwd_entry(pwd, override); } /************************************************************************ Routine to search sam passwd by name. *************************************************************************/ struct sam_passwd *getsam21pwnam(char *name) { return pdb_ops->getsam21pwnam(name); } /************************************************************************ Routine to search sam passwd by rid. *************************************************************************/ struct sam_passwd *getsam21pwrid(uint32 rid) { return pdb_ops->getsam21pwrid(rid); } /************************************************************************ Routine to search sam passwd by uid. *************************************************************************/ struct sam_passwd *getsam21pwuid(uid_t uid) { return pdb_ops->getsam21pwuid(uid); } /********************************************************** ********************************************************** utility routines which are likely to be useful to all password databases ********************************************************** **********************************************************/ /************************************************************* initialises a struct sam_disp_info. **************************************************************/ void pdb_init_dispinfo(struct sam_disp_info *user) { if (user == NULL) return; bzero(user, sizeof(*user)); } /************************************************************* initialises a struct smb_passwd. **************************************************************/ void pdb_init_smb(struct smb_passwd *user) { if (user == NULL) return; bzero(user, sizeof(*user)); user->pass_last_set_time = (time_t)-1; } /************************************************************* initialises a struct sam_passwd. **************************************************************/ void pdb_init_sam(struct sam_passwd *user) { if (user == NULL) return; bzero(user, sizeof(*user)); user->logon_time = (time_t)-1; user->logoff_time = (time_t)-1; user->kickoff_time = (time_t)-1; user->pass_last_set_time = (time_t)-1; user->pass_can_change_time = (time_t)-1; user->pass_must_change_time = (time_t)-1; } /************************************************************************* Routine to return the next entry in the sam passwd list. *************************************************************************/ struct sam_disp_info *pdb_sam_to_dispinfo(struct sam_passwd *user) { static struct sam_disp_info disp_info; if (user == NULL) return NULL; pdb_init_dispinfo(&disp_info); disp_info.smb_name = user->smb_name; disp_info.full_name = user->full_name; disp_info.user_rid = user->user_rid; return &disp_info; } /************************************************************* converts a sam_passwd structure to a smb_passwd structure. **************************************************************/ struct smb_passwd *pdb_sam_to_smb(struct sam_passwd *user) { static struct smb_passwd pw_buf; if (user == NULL) return NULL; pdb_init_smb(&pw_buf); pw_buf.smb_userid = user->smb_userid; pw_buf.smb_name = user->smb_name; pw_buf.smb_passwd = user->smb_passwd; pw_buf.smb_nt_passwd = user->smb_nt_passwd; pw_buf.acct_ctrl = user->acct_ctrl; pw_buf.pass_last_set_time = user->pass_last_set_time; return &pw_buf; } /************************************************************* converts a smb_passwd structure to a sam_passwd structure. **************************************************************/ struct sam_passwd *pdb_smb_to_sam(struct smb_passwd *user) { static struct sam_passwd pw_buf; if (user == NULL) return NULL; pdb_init_sam(&pw_buf); pw_buf.smb_userid = user->smb_userid; pw_buf.smb_name = user->smb_name; pw_buf.smb_passwd = user->smb_passwd; pw_buf.smb_nt_passwd = user->smb_nt_passwd; pw_buf.acct_ctrl = user->acct_ctrl; pw_buf.pass_last_set_time = user->pass_last_set_time; return &pw_buf; } #if 0 COMMENTED OUT UNTIL SOMETHING ACTUALLY USES THEM. JRA. /******************************************************************* gets password-database-format time from a string. ********************************************************************/ static time_t get_time_from_string(char *p) { int i; for (i = 0; i < 8; i++) { if (p[i] == '\0' || !isxdigit(p[i])) break; } if (i == 8) { /* * p points at 8 characters of hex digits - * read into a time_t as the seconds since * 1970 that the password was last changed. */ return (time_t)strtol((char *)p, NULL, 16); } return (time_t)-1; } /******************************************************************* gets password last set time ********************************************************************/ time_t pdb_get_last_set_time(char *p) { if (*p && StrnCaseCmp((char *)p, "LCT-", 4)) { return get_time_from_string(p + 4); } return (time_t)-1; } /******************************************************************* sets password-database-format time in a string. ********************************************************************/ static void set_time_in_string(char *p, int max_len, char *type, time_t t) { slprintf(p, max_len, ":%s-%08X:", type, (uint32)t); } /******************************************************************* sets password last set time ********************************************************************/ void pdb_set_last_set_time(char *p, int max_len, time_t t) { set_time_in_string(p, max_len, "LCT", t); } #endif /* 0 */ /********************************************************** Encode the account control bits into a string. **********************************************************/ char *pdb_encode_acct_ctrl(uint16 acct_ctrl) { static fstring acct_str; char *p = acct_str; *p++ = '['; if (acct_ctrl & ACB_HOMDIRREQ) *p++ = 'H'; if (acct_ctrl & ACB_TEMPDUP ) *p++ = 'T'; if (acct_ctrl & ACB_NORMAL ) *p++ = 'U'; if (acct_ctrl & ACB_MNS ) *p++ = 'M'; if (acct_ctrl & ACB_WSTRUST ) *p++ = 'W'; if (acct_ctrl & ACB_SVRTRUST ) *p++ = 'S'; if (acct_ctrl & ACB_AUTOLOCK ) *p++ = 'L'; if (acct_ctrl & ACB_PWNOEXP ) *p++ = 'X'; if (acct_ctrl & ACB_DOMTRUST ) *p++ = 'I'; *p++ = ']'; *p = '\0'; return acct_str; } /********************************************************** Decode the account control bits from a string. this function breaks coding standards minimum line width of 80 chars. reason: vertical line-up code clarity - all case statements fit into 15 lines, which is more important. **********************************************************/ uint16 pdb_decode_acct_ctrl(char *p) { uint16 acct_ctrl = 0; BOOL finished = False; /* * Check if the account type bits have been encoded after the * NT password (in the form [NDHTUWSLXI]). */ if (*p != '[') return 0; for (p++; *p && !finished; p++) { switch (*p) { #if 0 /* * Hmmm. Don't allow these to be set/read independently * of the actual password fields. We don't want a mismatch. * JRA. */ case 'N': { acct_ctrl |= ACB_PWNOTREQ ; break; /* 'N'o password. */ } case 'D': { acct_ctrl |= ACB_DISABLED ; break; /* 'D'isabled. */ } #endif case 'H': { acct_ctrl |= ACB_HOMDIRREQ; break; /* 'H'omedir required. */ } case 'T': { acct_ctrl |= ACB_TEMPDUP ; break; /* 'T'emp account. */ } case 'U': { acct_ctrl |= ACB_NORMAL ; break; /* 'U'ser account (normal). */ } case 'M': { acct_ctrl |= ACB_MNS ; break; /* 'M'NS logon user account. What is this ? */ } case 'W': { acct_ctrl |= ACB_WSTRUST ; break; /* 'W'orkstation account. */ } case 'S': { acct_ctrl |= ACB_SVRTRUST ; break; /* 'S'erver account. */ } case 'L': { acct_ctrl |= ACB_AUTOLOCK ; break; /* 'L'ocked account. */ } case 'X': { acct_ctrl |= ACB_PWNOEXP ; break; /* No 'X'piry on password */ } case 'I': { acct_ctrl |= ACB_DOMTRUST ; break; /* 'I'nterdomain trust account. */ } case ':': case '\n': case '\0': case ']': default: { finished = True; } } } return acct_ctrl; } /************************************************************* Routine to get the next 32 hex characters and turn them into a 16 byte array. **************************************************************/ int pdb_gethexpwd(char *p, char *pwd) { int i; unsigned char lonybble, hinybble; char *hexchars = "0123456789ABCDEF"; char *p1, *p2; for (i = 0; i < 32; i += 2) { hinybble = toupper(p[i]); lonybble = toupper(p[i + 1]); p1 = strchr(hexchars, hinybble); p2 = strchr(hexchars, lonybble); if (!p1 || !p2) return (False); hinybble = PTR_DIFF(p1, hexchars); lonybble = PTR_DIFF(p2, hexchars); pwd[i / 2] = (hinybble << 4) | lonybble; } return (True); } /******************************************************************* Group and User RID username mapping function ********************************************************************/ BOOL pdb_name_to_rid(char *user_name, uint32 *u_rid, uint32 *g_rid) { struct passwd *pw = Get_Pwnam(user_name, False); if (u_rid == NULL || g_rid == NULL || user_name == NULL) { return False; } if (!pw) { DEBUG(1,("Username %s is invalid on this system\n", user_name)); return False; } if (user_in_list(user_name, lp_domain_guest_users())) { *u_rid = DOMAIN_USER_RID_GUEST; } else if (user_in_list(user_name, lp_domain_admin_users())) { *u_rid = DOMAIN_USER_RID_ADMIN; } else { /* turn the unix UID into a Domain RID. this is what the posix sub-system does (adds 1000 to the uid) */ *u_rid = pdb_uid_to_user_rid(pw->pw_uid); } /* absolutely no idea what to do about the unix GID to Domain RID mapping */ *g_rid = pdb_gid_to_group_rid(pw->pw_gid); return True; } /**************************************************************************** Read the machine SID from a file. ****************************************************************************/ static BOOL read_sid_from_file(int fd, char *sid_file) { fstring fline; if(read(fd, &fline, sizeof(fline) -1 ) < 0) { DEBUG(0,("read_sid_from_file: unable to read file %s. Error was %s\n", sid_file, strerror(errno) )); return False; } /* * Convert to the machine SID. */ fline[sizeof(fline)-1] = '\0'; if(!string_to_sid( &global_machine_sid, fline)) { DEBUG(0,("read_sid_from_file: unable to generate machine SID.\n")); return False; } return True; } /**************************************************************************** Generate the global machine sid. Look for the MACHINE.SID file first, if not found then look in smb.conf and use it to create the MACHINE.SID file. ****************************************************************************/ BOOL pdb_generate_machine_sid(void) { int fd; char *p; pstring sid_file; fstring sid_string; struct stat st; uchar raw_sid_data[12]; pstrcpy(sid_file, lp_smb_passwd_file()); p = strrchr(sid_file, '/'); if(p != NULL) *++p = '\0'; pstrcat(sid_file, "MACHINE.SID"); if((fd = open( sid_file, O_RDWR | O_CREAT, 0644)) < 0 ) { DEBUG(0,("generate_machine_sid: unable to open or create file %s. Error was %s\n", sid_file, strerror(errno) )); return False; } /* * Check if the file contains data. */ if(fstat( fd, &st) < 0) { DEBUG(0,("generate_machine_sid: unable to stat file %s. Error was %s\n", sid_file, strerror(errno) )); close(fd); return False; } if(st.st_size > 0) { /* * We have a valid SID - read it. */ if(!read_sid_from_file( fd, sid_file)) { DEBUG(0,("generate_machine_sid: unable to read file %s. Error was %s\n", sid_file, strerror(errno) )); close(fd); return False; } close(fd); return True; } /* * The file contains no data - we may need to generate our * own sid. Try the lp_domain_sid() first. */ if(*lp_domain_sid()) fstrcpy( sid_string, lp_domain_sid()); else { /* * Generate the new sid data & turn it into a string. */ int i; generate_random_buffer( raw_sid_data, 12, True); fstrcpy( sid_string, "S-1-5-21"); for( i = 0; i < 3; i++) { fstring tmp_string; slprintf( tmp_string, sizeof(tmp_string) - 1, "-%u", IVAL(raw_sid_data, i*4)); fstrcat( sid_string, tmp_string); } } fstrcat(sid_string, "\n"); /* * Ensure our new SID is valid. */ if(!string_to_sid( &global_machine_sid, sid_string)) { DEBUG(0,("generate_machine_sid: unable to generate machine SID.\n")); return False; } /* * Do an exclusive blocking lock on the file. */ if(!do_file_lock( fd, 60, F_WRLCK)) { DEBUG(0,("generate_machine_sid: unable to lock file %s. Error was %s\n", sid_file, strerror(errno) )); close(fd); return False; } /* * At this point we have a blocking lock on the SID * file - check if in the meantime someone else wrote * SID data into the file. If so - they were here first, * use their data. */ if(fstat( fd, &st) < 0) { DEBUG(0,("generate_machine_sid: unable to stat file %s. Error was %s\n", sid_file, strerror(errno) )); close(fd); return False; } if(st.st_size > 0) { /* * Unlock as soon as possible to reduce * contention on the exclusive lock. */ do_file_lock( fd, 60, F_UNLCK); /* * We have a valid SID - read it. */ if(!read_sid_from_file( fd, sid_file)) { DEBUG(0,("generate_machine_sid: unable to read file %s. Error was %s\n", sid_file, strerror(errno) )); close(fd); return False; } close(fd); return True; } /* * The file is still empty and we have an exlusive lock on it. * Write out out SID data into the file. */ if(fchmod(fd, 0644) < 0) { DEBUG(0,("generate_machine_sid: unable to set correct permissions on file %s. \ Error was %s\n", sid_file, strerror(errno) )); close(fd); return False; } if(write( fd, sid_string, strlen(sid_string)) != strlen(sid_string)) { DEBUG(0,("generate_machine_sid: unable to write file %s. Error was %s\n", sid_file, strerror(errno) )); close(fd); return False; } /* * Unlock & exit. */ do_file_lock( fd, 60, F_UNLCK); close(fd); return True; } /******************************************************************* converts NT User RID to a UNIX uid. ********************************************************************/ uid_t pdb_user_rid_to_uid(uint32 u_rid) { return (uid_t)(u_rid - 1000); } /******************************************************************* converts NT Group RID to a UNIX uid. ********************************************************************/ gid_t pdb_group_rid_to_gid(uint32 g_rid) { return (gid_t)(g_rid - 1000); } /******************************************************************* converts UNIX uid to an NT User RID. ********************************************************************/ uint32 pdb_uid_to_user_rid(uid_t uid) { return (uint32)(uid + 1000); } /******************************************************************* converts NT Group RID to a UNIX uid. ********************************************************************/ uint32 pdb_gid_to_group_rid(gid_t gid) { return (uint32)(gid + 1000); } /******************************************************************* Decides if a RID is a user or group RID. ********************************************************************/ BOOL pdb_rid_is_user(uint32 rid) { /* Punt for now - we need to look at the encoding here. JRA. */ /* lkcl i understand that NT attaches an enumeration to a RID * such that it can be identified as either a user, group etc * type. there are 5 such categories, and they are documented. */ return True; }