/* Unix SMB/CIFS implementation. Samba utility functions Copyright (C) Andrew Tridgell 1992-1998 Copyright (C) Luke Kenneth Caseson Leighton 1998-1999 Copyright (C) Jeremy Allison 1999 Copyright (C) Stefan (metze) Metzmacher 2002 Copyright (C) Simo Sorce 2002 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" /* * Some useful sids */ const DOM_SID global_sid_World_Domain = /* Everyone domain */ { 1, 0, {0,0,0,0,0,1}, {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}}; const DOM_SID global_sid_World = /* Everyone */ { 1, 1, {0,0,0,0,0,1}, {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}}; const DOM_SID global_sid_Creator_Owner_Domain = /* Creator Owner domain */ { 1, 0, {0,0,0,0,0,3}, {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}}; const DOM_SID global_sid_NT_Authority = /* NT Authority */ { 1, 0, {0,0,0,0,0,5}, {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}}; const DOM_SID global_sid_System = /* System */ { 1, 1, {0,0,0,0,0,5}, {18,0,0,0,0,0,0,0,0,0,0,0,0,0,0}}; const DOM_SID global_sid_NULL = /* NULL sid */ { 1, 1, {0,0,0,0,0,0}, {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}}; const DOM_SID global_sid_Authenticated_Users = /* All authenticated rids */ { 1, 1, {0,0,0,0,0,5}, {11,0,0,0,0,0,0,0,0,0,0,0,0,0,0}}; const DOM_SID global_sid_Network = /* Network rids */ { 1, 1, {0,0,0,0,0,5}, {2,0,0,0,0,0,0,0,0,0,0,0,0,0,0}}; const DOM_SID global_sid_Creator_Owner = /* Creator Owner */ { 1, 1, {0,0,0,0,0,3}, {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}}; const DOM_SID global_sid_Creator_Group = /* Creator Group */ { 1, 1, {0,0,0,0,0,3}, {1,0,0,0,0,0,0,0,0,0,0,0,0,0,0}}; const DOM_SID global_sid_Anonymous = /* Anonymous login */ { 1, 1, {0,0,0,0,0,5}, {7,0,0,0,0,0,0,0,0,0,0,0,0,0,0}}; const DOM_SID global_sid_Builtin = /* Local well-known domain */ { 1, 1, {0,0,0,0,0,5}, {32,0,0,0,0,0,0,0,0,0,0,0,0,0,0}}; const DOM_SID global_sid_Builtin_Administrators = /* Builtin administrators */ { 1, 2, {0,0,0,0,0,5}, {32,544,0,0,0,0,0,0,0,0,0,0,0,0,0}}; const DOM_SID global_sid_Builtin_Users = /* Builtin users */ { 1, 2, {0,0,0,0,0,5}, {32,545,0,0,0,0,0,0,0,0,0,0,0,0,0}}; const DOM_SID global_sid_Builtin_Guests = /* Builtin guest users */ { 1, 2, {0,0,0,0,0,5}, {32,546,0,0,0,0,0,0,0,0,0,0,0,0,0}}; const DOM_SID global_sid_Builtin_Power_Users = /* Builtin power users */ { 1, 2, {0,0,0,0,0,5}, {32,547,0,0,0,0,0,0,0,0,0,0,0,0,0}}; const DOM_SID global_sid_Builtin_Account_Operators = /* Builtin account operators */ { 1, 2, {0,0,0,0,0,5}, {32,548,0,0,0,0,0,0,0,0,0,0,0,0,0}}; const DOM_SID global_sid_Builtin_Server_Operators = /* Builtin server operators */ { 1, 2, {0,0,0,0,0,5}, {32,549,0,0,0,0,0,0,0,0,0,0,0,0,0}}; const DOM_SID global_sid_Builtin_Print_Operators = /* Builtin print operators */ { 1, 2, {0,0,0,0,0,5}, {32,550,0,0,0,0,0,0,0,0,0,0,0,0,0}}; const DOM_SID global_sid_Builtin_Backup_Operators = /* Builtin backup operators */ { 1, 2, {0,0,0,0,0,5}, {32,551,0,0,0,0,0,0,0,0,0,0,0,0,0}}; const DOM_SID global_sid_Builtin_Replicator = /* Builtin replicator */ { 1, 2, {0,0,0,0,0,5}, {32,552,0,0,0,0,0,0,0,0,0,0,0,0,0}}; #define SECURITY_NULL_SID_AUTHORITY 0 #define SECURITY_WORLD_SID_AUTHORITY 1 #define SECURITY_LOCAL_SID_AUTHORITY 2 #define SECURITY_CREATOR_SID_AUTHORITY 3 #define SECURITY_NT_AUTHORITY 5 /* * An NT compatible anonymous token. */ static DOM_SID anon_sid_array[3] = { { 1, 1, {0,0,0,0,0,1}, {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}}, { 1, 1, {0,0,0,0,0,5}, {2,0,0,0,0,0,0,0,0,0,0,0,0,0,0}}, { 1, 1, {0,0,0,0,0,5}, {7,0,0,0,0,0,0,0,0,0,0,0,0,0,0}} }; NT_USER_TOKEN anonymous_token = { 3, anon_sid_array, SE_NONE }; static DOM_SID system_sid_array[1] = { { 1, 1, {0,0,0,0,0,5}, {18,0,0,0,0,0,0,0,0,0,0,0,0,0,0}} }; NT_USER_TOKEN system_token = { 1, system_sid_array, SE_ALL_PRIVS }; /**************************************************************************** Lookup string names for SID types. ****************************************************************************/ static const struct { enum SID_NAME_USE sid_type; const char *string; } sid_name_type[] = { {SID_NAME_USER, "User"}, {SID_NAME_DOM_GRP, "Domain Group"}, {SID_NAME_DOMAIN, "Domain"}, {SID_NAME_ALIAS, "Local Group"}, {SID_NAME_WKN_GRP, "Well-known Group"}, {SID_NAME_DELETED, "Deleted Account"}, {SID_NAME_INVALID, "Invalid Account"}, {SID_NAME_UNKNOWN, "UNKNOWN"}, {SID_NAME_COMPUTER, "Computer"}, {(enum SID_NAME_USE)0, NULL} }; const char *sid_type_lookup(uint32 sid_type) { int i = 0; /* Look through list */ while(sid_name_type[i].sid_type != 0) { if (sid_name_type[i].sid_type == sid_type) return sid_name_type[i].string; i++; } /* Default return */ return "SID *TYPE* is INVALID"; } /************************************************************************** Create the SYSTEM token. ***************************************************************************/ NT_USER_TOKEN *get_system_token(void) { return &system_token; } /****************************************************************** get the default domain/netbios name to be used when dealing with our passdb list of accounts ******************************************************************/ const char *get_global_sam_name(void) { if ((lp_server_role() == ROLE_DOMAIN_PDC) || (lp_server_role() == ROLE_DOMAIN_BDC)) { return lp_workgroup(); } return global_myname(); } /************************************************************************** Splits a name of format \DOMAIN\name or name into its two components. Sets the DOMAIN name to global_myname() if it has not been specified. ***************************************************************************/ void split_domain_name(const char *fullname, char *domain, char *name) { pstring full_name; const char *sep; char *p; sep = lp_winbind_separator(); *domain = *name = '\0'; if (fullname[0] == sep[0] || fullname[0] == '\\') fullname++; pstrcpy(full_name, fullname); p = strchr_m(full_name+1, '\\'); if (!p) p = strchr_m(full_name+1, sep[0]); if (p != NULL) { *p = 0; fstrcpy(domain, full_name); fstrcpy(name, p+1); } else { fstrcpy(domain, get_global_sam_name()); fstrcpy(name, full_name); } DEBUG(10,("split_domain_name:name '%s' split into domain :'%s' and user :'%s'\n", fullname, domain, name)); } /**************************************************************************** Test if a SID is wellknown and resolvable. ****************************************************************************/ BOOL resolvable_wellknown_sid(DOM_SID *sid) { uint32 ia = (sid->id_auth[5]) + (sid->id_auth[4] << 8 ) + (sid->id_auth[3] << 16) + (sid->id_auth[2] << 24); if (sid->sid_rev_num != SEC_DESC_REVISION || sid->num_auths < 1) return False; return (ia == SECURITY_WORLD_SID_AUTHORITY || ia == SECURITY_CREATOR_SID_AUTHORITY); } /***************************************************************** Convert a SID to an ascii string. *****************************************************************/ char *sid_to_string(fstring sidstr_out, const DOM_SID *sid) { char subauth[16]; int i; uint32 ia; if (!sid) { fstrcpy(sidstr_out, "(NULL SID)"); return sidstr_out; } /* * BIG NOTE: this function only does SIDS where the identauth is not >= 2^32 * in a range of 2^48. */ ia = (sid->id_auth[5]) + (sid->id_auth[4] << 8 ) + (sid->id_auth[3] << 16) + (sid->id_auth[2] << 24); slprintf(sidstr_out, sizeof(fstring) - 1, "S-%u-%lu", (unsigned int)sid->sid_rev_num, (unsigned long)ia); for (i = 0; i < sid->num_auths; i++) { slprintf(subauth, sizeof(subauth)-1, "-%lu", (unsigned long)sid->sub_auths[i]); fstrcat(sidstr_out, subauth); } return sidstr_out; } /***************************************************************** Useful function for debug lines. *****************************************************************/ const char *sid_string_static(const DOM_SID *sid) { static fstring sid_str; sid_to_string(sid_str, sid); return sid_str; } /***************************************************************** Convert a string to a SID. Returns True on success, False on fail. *****************************************************************/ BOOL string_to_sid(DOM_SID *sidout, const char *sidstr) { pstring tok; char *q; const char *p; /* BIG NOTE: this function only does SIDS where the identauth is not >= 2^32 */ uint32 ia; if (StrnCaseCmp( sidstr, "S-", 2)) { DEBUG(0,("string_to_sid: Sid %s does not start with 'S-'.\n", sidstr)); return False; } memset((char *)sidout, '\0', sizeof(DOM_SID)); p = q = SMB_STRDUP(sidstr + 2); if (p == NULL) { DEBUG(0, ("string_to_sid: out of memory!\n")); return False; } if (!next_token(&p, tok, "-", sizeof(tok))) { DEBUG(0,("string_to_sid: Sid %s is not in a valid format.\n", sidstr)); SAFE_FREE(q); return False; } /* Get the revision number. */ sidout->sid_rev_num = (uint8)strtoul(tok, NULL, 10); if (!next_token(&p, tok, "-", sizeof(tok))) { DEBUG(0,("string_to_sid: Sid %s is not in a valid format.\n", sidstr)); SAFE_FREE(q); return False; } /* identauth in decimal should be < 2^32 */ ia = (uint32)strtoul(tok, NULL, 10); /* NOTE - the ia value is in big-endian format. */ sidout->id_auth[0] = 0; sidout->id_auth[1] = 0; sidout->id_auth[2] = (ia & 0xff000000) >> 24; sidout->id_auth[3] = (ia & 0x00ff0000) >> 16; sidout->id_auth[4] = (ia & 0x0000ff00) >> 8; sidout->id_auth[5] = (ia & 0x000000ff); sidout->num_auths = 0; while(next_token(&p, tok, "-", sizeof(tok)) && sidout->num_auths < MAXSUBAUTHS) { /* * NOTE - the subauths are in native machine-endian format. They * are converted to little-endian when linearized onto the wire. */ sid_append_rid(sidout, (uint32)strtoul(tok, NULL, 10)); } SAFE_FREE(q); return True; } DOM_SID *string_sid_talloc(TALLOC_CTX *mem_ctx, const char *sidstr) { DOM_SID *result = TALLOC_P(mem_ctx, DOM_SID); if (result == NULL) return NULL; if (!string_to_sid(result, sidstr)) return NULL; return result; } /***************************************************************** Add a rid to the end of a sid *****************************************************************/ BOOL sid_append_rid(DOM_SID *sid, uint32 rid) { if (sid->num_auths < MAXSUBAUTHS) { sid->sub_auths[sid->num_auths++] = rid; return True; } return False; } BOOL sid_compose(DOM_SID *dst, const DOM_SID *domain_sid, uint32 rid) { sid_copy(dst, domain_sid); return sid_append_rid(dst, rid); } /***************************************************************** Removes the last rid from the end of a sid *****************************************************************/ BOOL sid_split_rid(DOM_SID *sid, uint32 *rid) { if (sid->num_auths > 0) { sid->num_auths--; *rid = sid->sub_auths[sid->num_auths]; return True; } return False; } /***************************************************************** Return the last rid from the end of a sid *****************************************************************/ BOOL sid_peek_rid(const DOM_SID *sid, uint32 *rid) { if (!sid || !rid) return False; if (sid->num_auths > 0) { *rid = sid->sub_auths[sid->num_auths - 1]; return True; } return False; } /***************************************************************** Return the last rid from the end of a sid and check the sid against the exp_dom_sid *****************************************************************/ BOOL sid_peek_check_rid(const DOM_SID *exp_dom_sid, const DOM_SID *sid, uint32 *rid) { if (!exp_dom_sid || !sid || !rid) return False; if (sid->num_auths != (exp_dom_sid->num_auths+1)) { return False; } if (sid_compare_domain(exp_dom_sid, sid)!=0){ *rid=(-1); return False; } return sid_peek_rid(sid, rid); } /***************************************************************** Copies a sid *****************************************************************/ void sid_copy(DOM_SID *dst, const DOM_SID *src) { int i; ZERO_STRUCTP(dst); dst->sid_rev_num = src->sid_rev_num; dst->num_auths = src->num_auths; memcpy(&dst->id_auth[0], &src->id_auth[0], sizeof(src->id_auth)); for (i = 0; i < src->num_auths; i++) dst->sub_auths[i] = src->sub_auths[i]; } /***************************************************************** Write a sid out into on-the-wire format. *****************************************************************/ BOOL sid_linearize(char *outbuf, size_t len, const DOM_SID *sid) { size_t i; if (len < sid_size(sid)) return False; SCVAL(outbuf,0,sid->sid_rev_num); SCVAL(outbuf,1,sid->num_auths); memcpy(&outbuf[2], sid->id_auth, 6); for(i = 0; i < sid->num_auths; i++) SIVAL(outbuf, 8 + (i*4), sid->sub_auths[i]); return True; } /***************************************************************** Parse a on-the-wire SID to a DOM_SID. *****************************************************************/ BOOL sid_parse(const char *inbuf, size_t len, DOM_SID *sid) { int i; if (len < 8) return False; ZERO_STRUCTP(sid); sid->sid_rev_num = CVAL(inbuf, 0); sid->num_auths = CVAL(inbuf, 1); memcpy(sid->id_auth, inbuf+2, 6); if (len < 8 + sid->num_auths*4) return False; for (i=0;i<sid->num_auths;i++) sid->sub_auths[i] = IVAL(inbuf, 8+i*4); return True; } /***************************************************************** Compare the auth portion of two sids. *****************************************************************/ static int sid_compare_auth(const DOM_SID *sid1, const DOM_SID *sid2) { int i; if (sid1 == sid2) return 0; if (!sid1) return -1; if (!sid2) return 1; if (sid1->sid_rev_num != sid2->sid_rev_num) return sid1->sid_rev_num - sid2->sid_rev_num; for (i = 0; i < 6; i++) if (sid1->id_auth[i] != sid2->id_auth[i]) return sid1->id_auth[i] - sid2->id_auth[i]; return 0; } /***************************************************************** Compare two sids. *****************************************************************/ int sid_compare(const DOM_SID *sid1, const DOM_SID *sid2) { int i; if (sid1 == sid2) return 0; if (!sid1) return -1; if (!sid2) return 1; /* Compare most likely different rids, first: i.e start at end */ if (sid1->num_auths != sid2->num_auths) return sid1->num_auths - sid2->num_auths; for (i = sid1->num_auths-1; i >= 0; --i) if (sid1->sub_auths[i] != sid2->sub_auths[i]) return sid1->sub_auths[i] - sid2->sub_auths[i]; return sid_compare_auth(sid1, sid2); } /***************************************************************** See if 2 SIDs are in the same domain this just compares the leading sub-auths *****************************************************************/ int sid_compare_domain(const DOM_SID *sid1, const DOM_SID *sid2) { int n, i; n = MIN(sid1->num_auths, sid2->num_auths); for (i = n-1; i >= 0; --i) if (sid1->sub_auths[i] != sid2->sub_auths[i]) return sid1->sub_auths[i] - sid2->sub_auths[i]; return sid_compare_auth(sid1, sid2); } /***************************************************************** Compare two sids. *****************************************************************/ BOOL sid_equal(const DOM_SID *sid1, const DOM_SID *sid2) { return sid_compare(sid1, sid2) == 0; } /***************************************************************** Check if the SID is the builtin SID (S-1-5-32). *****************************************************************/ BOOL sid_check_is_builtin(const DOM_SID *sid) { return sid_equal(sid, &global_sid_Builtin); } /***************************************************************** Check if the SID is one of the builtin SIDs (S-1-5-32-a). *****************************************************************/ BOOL sid_check_is_in_builtin(const DOM_SID *sid) { DOM_SID dom_sid; uint32 rid; sid_copy(&dom_sid, sid); sid_split_rid(&dom_sid, &rid); return sid_equal(&dom_sid, &global_sid_Builtin); } /***************************************************************** Calculates size of a sid. *****************************************************************/ size_t sid_size(const DOM_SID *sid) { if (sid == NULL) return 0; return sid->num_auths * sizeof(uint32) + 8; } /***************************************************************** Returns true if SID is internal (and non-mappable). *****************************************************************/ BOOL non_mappable_sid(DOM_SID *sid) { DOM_SID dom; uint32 rid; sid_copy(&dom, sid); sid_split_rid(&dom, &rid); if (sid_equal(&dom, &global_sid_Builtin)) return True; if (sid_equal(&dom, &global_sid_NT_Authority)) return True; return False; } /***************************************************************** Return the binary string representation of a DOM_SID. Caller must free. *****************************************************************/ char *sid_binstring(const DOM_SID *sid) { char *buf, *s; int len = sid_size(sid); buf = SMB_MALLOC(len); if (!buf) return NULL; sid_linearize(buf, len, sid); s = binary_string(buf, len); free(buf); return s; } /******************************************************************* Tallocs a duplicate SID. ********************************************************************/ DOM_SID *sid_dup_talloc(TALLOC_CTX *ctx, const DOM_SID *src) { DOM_SID *dst; if(!src) return NULL; if((dst = TALLOC_ZERO_P(ctx, DOM_SID)) != NULL) { sid_copy( dst, src); } return dst; } /******************************************************************** Add SID to an array SIDs ********************************************************************/ void add_sid_to_array(TALLOC_CTX *mem_ctx, const DOM_SID *sid, DOM_SID **sids, int *num) { if (mem_ctx != NULL) *sids = TALLOC_REALLOC_ARRAY(mem_ctx, *sids, DOM_SID, (*num)+1); else *sids = SMB_REALLOC_ARRAY(*sids, DOM_SID, (*num)+1); if (*sids == NULL) return; sid_copy(&((*sids)[*num]), sid); *num += 1; return; } /******************************************************************** Add SID to an array SIDs ensuring that it is not already there ********************************************************************/ void add_sid_to_array_unique(TALLOC_CTX *mem_ctx, const DOM_SID *sid, DOM_SID **sids, int *num_sids) { int i; for (i=0; i<(*num_sids); i++) { if (sid_compare(sid, &(*sids)[i]) == 0) return; } add_sid_to_array(mem_ctx, sid, sids, num_sids); } /******************************************************************** Remove SID from an array ********************************************************************/ void del_sid_from_array(const DOM_SID *sid, DOM_SID **sids, int *num) { DOM_SID *sid_list = *sids; int i; for ( i=0; i<*num; i++ ) { /* if we find the SID, then decrement the count and break out of the loop */ if ( sid_equal(sid, &sid_list[i]) ) { *num -= 1; break; } } /* This loop will copy the remainder of the array if i < num of sids ni the array */ for ( ; i<*num; i++ ) sid_copy( &sid_list[i], &sid_list[i+1] ); return; }