diff options
Diffstat (limited to 'source3/passdb/passdb.c')
| -rw-r--r-- | source3/passdb/passdb.c | 1223 |
1 files changed, 1223 insertions, 0 deletions
diff --git a/source3/passdb/passdb.c b/source3/passdb/passdb.c new file mode 100644 index 0000000000..7eecbfd2cd --- /dev/null +++ b/source3/passdb/passdb.c @@ -0,0 +1,1223 @@ +/* + Unix SMB/CIFS implementation. + Password and authentication handling + Copyright (C) Jeremy Allison 1996-2001 + Copyright (C) Luke Kenneth Casson Leighton 1996-1998 + Copyright (C) Gerald (Jerry) Carter 2000-2001 + Copyright (C) Andrew Bartlett 2001-2002 + + 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" + +/* + * This is set on startup - it defines the SID for this + * machine, and therefore the SAM database for which it is + * responsible. + */ + +extern DOM_SID global_sam_sid; + +/************************************************************ + Fill the SAM_ACCOUNT with default values. + ***********************************************************/ + +static void pdb_fill_default_sam(SAM_ACCOUNT *user) +{ + ZERO_STRUCT(user->private); /* Don't touch the talloc context */ + + /* Don't change these timestamp settings without a good reason. + They are important for NT member server compatibility. */ + + user->private.init_flag = FLAG_SAM_UNINIT; + user->private.uid = user->private.gid = -1; + + user->private.logon_time = (time_t)0; + user->private.pass_last_set_time = (time_t)0; + user->private.pass_can_change_time = (time_t)0; + user->private.logoff_time = + user->private.kickoff_time = + user->private.pass_must_change_time = get_time_t_max(); + user->private.unknown_3 = 0x00ffffff; /* don't know */ + user->private.logon_divs = 168; /* hours per week */ + user->private.hours_len = 21; /* 21 times 8 bits = 168 */ + memset(user->private.hours, 0xff, user->private.hours_len); /* available at all hours */ + user->private.unknown_5 = 0x00000000; /* don't know */ + user->private.unknown_6 = 0x000004ec; /* don't know */ + + /* Some parts of samba strlen their pdb_get...() returns, + so this keeps the interface unchanged for now. */ + + user->private.username = ""; + user->private.domain = ""; + user->private.nt_username = ""; + user->private.full_name = ""; + user->private.home_dir = ""; + user->private.logon_script = ""; + user->private.profile_path = ""; + user->private.acct_desc = ""; + user->private.workstations = ""; + user->private.unknown_str = ""; + user->private.munged_dial = ""; +} + +static void destroy_pdb_talloc(SAM_ACCOUNT **user) +{ + if (*user) { + talloc_destroy((*user)->mem_ctx); + *user = NULL; + } +} + + +/********************************************************************** + Alloc memory and initialises a struct sam_passwd on supplied mem_ctx. +***********************************************************************/ + +NTSTATUS pdb_init_sam_talloc(TALLOC_CTX *mem_ctx, SAM_ACCOUNT **user) +{ + if (*user != NULL) { + DEBUG(0,("pdb_init_sam: SAM_ACCOUNT was non NULL\n")); +#if 0 + smb_panic("non-NULL pointer passed to pdb_init_sam\n"); +#endif + return NT_STATUS_UNSUCCESSFUL; + } + + if (!mem_ctx) { + DEBUG(0,("pdb_init_sam_talloc: mem_ctx was NULL!\n")); + return NT_STATUS_UNSUCCESSFUL; + } + + *user=(SAM_ACCOUNT *)talloc(mem_ctx, sizeof(SAM_ACCOUNT)); + + if (*user==NULL) { + DEBUG(0,("pdb_init_sam: error while allocating memory\n")); + return NT_STATUS_NO_MEMORY; + } + + (*user)->mem_ctx = mem_ctx; + + (*user)->free_fn = NULL; + + pdb_fill_default_sam(*user); + + return NT_STATUS_OK; +} + + +/************************************************************* + Alloc memory and initialises a struct sam_passwd. + ************************************************************/ + +NTSTATUS pdb_init_sam(SAM_ACCOUNT **user) +{ + TALLOC_CTX *mem_ctx; + NTSTATUS nt_status; + + mem_ctx = talloc_init_named("passdb internal SAM_ACCOUNT allocation"); + + if (!mem_ctx) { + DEBUG(0,("pdb_init_sam: error while doing talloc_init()\n")); + return NT_STATUS_NO_MEMORY; + } + + if (!NT_STATUS_IS_OK(nt_status = pdb_init_sam_talloc(mem_ctx, user))) { + talloc_destroy(mem_ctx); + return nt_status; + } + + (*user)->free_fn = destroy_pdb_talloc; + + return NT_STATUS_OK; +} + + +/************************************************************* + Initialises a struct sam_passwd with sane values. + ************************************************************/ + +NTSTATUS pdb_init_sam_pw(SAM_ACCOUNT **new_sam_acct, const struct passwd *pwd) +{ + pstring str; + GROUP_MAP map; + uint32 rid; + NTSTATUS nt_status; + + if (!pwd) { + new_sam_acct = NULL; + return NT_STATUS_UNSUCCESSFUL; + } + + if (!NT_STATUS_IS_OK(nt_status = pdb_init_sam(new_sam_acct))) { + new_sam_acct = NULL; + return nt_status; + } + + pdb_set_username(*new_sam_acct, pwd->pw_name); + pdb_set_fullname(*new_sam_acct, pwd->pw_gecos); + + pdb_set_uid(*new_sam_acct, pwd->pw_uid); + pdb_set_gid(*new_sam_acct, pwd->pw_gid); + + /* let the backends set the rid!! + pdb_set_user_rid(*new_sam_acct, pdb_uid_to_user_rid(pwd->pw_uid)); + -- simo */ + + /* call the mapping code here */ + if(get_group_map_from_gid(pwd->pw_gid, &map, MAPPING_WITHOUT_PRIV)) { + sid_peek_rid(&map.sid, &rid); + } + else { + rid=pdb_gid_to_group_rid(pwd->pw_gid); + } + + pdb_set_group_rid(*new_sam_acct, rid); + + pstrcpy(str, lp_logon_path()); + standard_sub_advanced(-1, pwd->pw_name, "", pwd->pw_gid, pwd->pw_name, str); + pdb_set_profile_path(*new_sam_acct, str, False); + + pstrcpy(str, lp_logon_home()); + standard_sub_advanced(-1, pwd->pw_name, "", pwd->pw_gid, pwd->pw_name, str); + pdb_set_homedir(*new_sam_acct, str, False); + + pstrcpy(str, lp_logon_drive()); + standard_sub_advanced(-1, pwd->pw_name, "", pwd->pw_gid, pwd->pw_name, str); + pdb_set_dir_drive(*new_sam_acct, str, False); + + pstrcpy(str, lp_logon_script()); + standard_sub_advanced(-1, pwd->pw_name, "", pwd->pw_gid, pwd->pw_name, str); + pdb_set_logon_script(*new_sam_acct, str, False); + + return NT_STATUS_OK; +} + + +/** + * Free the contets of the SAM_ACCOUNT, but not the structure. + * + * Also wipes the LM and NT hashes from memory. + * + * @param user SAM_ACCOUNT to free members of. + **/ + +static void pdb_free_sam_contents(SAM_ACCOUNT *user) +{ + /* As we start mallocing more strings this is where + we should free them. */ + + data_blob_clear_free(&(user->private.lm_pw)); + data_blob_clear_free(&(user->private.nt_pw)); +} + + +/************************************************************ + Reset the SAM_ACCOUNT and free the NT/LM hashes. + ***********************************************************/ + +NTSTATUS pdb_reset_sam(SAM_ACCOUNT *user) +{ + if (user == NULL) { + DEBUG(0,("pdb_reset_sam: SAM_ACCOUNT was NULL\n")); +#if 0 + smb_panic("NULL pointer passed to pdb_free_sam\n"); +#endif + return NT_STATUS_UNSUCCESSFUL; + } + + pdb_free_sam_contents(user); + + pdb_fill_default_sam(user); + + return NT_STATUS_OK; +} + + +/************************************************************ + Free the SAM_ACCOUNT and the member pointers. + ***********************************************************/ + +NTSTATUS pdb_free_sam(SAM_ACCOUNT **user) +{ + if (*user == NULL) { + DEBUG(0,("pdb_free_sam: SAM_ACCOUNT was NULL\n")); +#if 0 + smb_panic("NULL pointer passed to pdb_free_sam\n"); +#endif + return NT_STATUS_UNSUCCESSFUL; + } + + pdb_free_sam_contents(*user); + + if ((*user)->free_fn) { + (*user)->free_fn(user); + } + + return NT_STATUS_OK; +} + + +/********************************************************** + Encode the account control bits into a string. + length = length of string to encode into (including terminating + null). length *MUST BE MORE THAN 2* ! + **********************************************************/ + +char *pdb_encode_acct_ctrl(uint16 acct_ctrl, size_t length) +{ + static fstring acct_str; + size_t i = 0; + + acct_str[i++] = '['; + + if (acct_ctrl & ACB_PWNOTREQ ) acct_str[i++] = 'N'; + if (acct_ctrl & ACB_DISABLED ) acct_str[i++] = 'D'; + if (acct_ctrl & ACB_HOMDIRREQ) acct_str[i++] = 'H'; + if (acct_ctrl & ACB_TEMPDUP ) acct_str[i++] = 'T'; + if (acct_ctrl & ACB_NORMAL ) acct_str[i++] = 'U'; + if (acct_ctrl & ACB_MNS ) acct_str[i++] = 'M'; + if (acct_ctrl & ACB_WSTRUST ) acct_str[i++] = 'W'; + if (acct_ctrl & ACB_SVRTRUST ) acct_str[i++] = 'S'; + if (acct_ctrl & ACB_AUTOLOCK ) acct_str[i++] = 'L'; + if (acct_ctrl & ACB_PWNOEXP ) acct_str[i++] = 'X'; + if (acct_ctrl & ACB_DOMTRUST ) acct_str[i++] = 'I'; + + for ( ; i < length - 2 ; i++ ) + acct_str[i] = ' '; + + i = length - 2; + acct_str[i++] = ']'; + acct_str[i++] = '\0'; + + return acct_str; +} + +/********************************************************** + Decode the account control bits from a string. + **********************************************************/ + +uint16 pdb_decode_acct_ctrl(const 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) { + case 'N': { acct_ctrl |= ACB_PWNOTREQ ; break; /* 'N'o password. */ } + case 'D': { acct_ctrl |= ACB_DISABLED ; break; /* 'D'isabled. */ } + 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 ' ': { break; } + case ':': + case '\n': + case '\0': + case ']': + default: { finished = True; } + } + } + + return acct_ctrl; +} + +/************************************************************* + Routine to set 32 hex password characters from a 16 byte array. +**************************************************************/ + +void pdb_sethexpwd(char *p, const unsigned char *pwd, uint16 acct_ctrl) +{ + if (pwd != NULL) { + int i; + for (i = 0; i < 16; i++) + slprintf(&p[i*2], 3, "%02X", pwd[i]); + } else { + if (acct_ctrl & ACB_PWNOTREQ) + safe_strcpy(p, "NO PASSWORDXXXXXXXXXXXXXXXXXXXXX", 33); + else + safe_strcpy(p, "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX", 33); + } +} + +/************************************************************* + Routine to get the 32 hex characters and turn them + into a 16 byte array. +**************************************************************/ + +BOOL pdb_gethexpwd(const char *p, unsigned char *pwd) +{ + int i; + unsigned char lonybble, hinybble; + char *hexchars = "0123456789ABCDEF"; + char *p1, *p2; + + if (!p) + return (False); + + 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); +} + +#if 0 /* seem it is not used by anyone */ +/******************************************************************* + Group and User RID username mapping function + ********************************************************************/ + +BOOL pdb_name_to_rid(const char *user_name, uint32 *u_rid, uint32 *g_rid) +{ + GROUP_MAP map; + struct passwd *pw = Get_Pwnam(user_name); + + 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; + } + + /* turn the unix UID into a Domain RID. this is what the posix + sub-system does (adds 1000 to the uid) */ + *u_rid = fallback_pdb_uid_to_user_rid(pw->pw_uid); + + /* absolutely no idea what to do about the unix GID to Domain RID mapping */ + /* map it ! */ + if (get_group_map_from_gid(pw->pw_gid, &map, MAPPING_WITHOUT_PRIV)) { + sid_peek_rid(&map.sid, g_rid); + } else + *g_rid = pdb_gid_to_group_rid(pw->pw_gid); + + return True; +} +#endif /* seem it is not used by anyone */ + +/******************************************************************* + Converts NT user RID to a UNIX uid. + ********************************************************************/ + +static uid_t fallback_pdb_user_rid_to_uid(uint32 user_rid) +{ + return (uid_t)(((user_rid & (~USER_RID_TYPE))- 1000)/RID_MULTIPLIER); +} + + +/******************************************************************* + converts UNIX uid to an NT User RID. + ********************************************************************/ + +static uint32 fallback_pdb_uid_to_user_rid(uid_t uid) +{ + return (((((uint32)uid)*RID_MULTIPLIER) + 1000) | USER_RID_TYPE); +} + +/******************************************************************* + Converts NT group RID to a UNIX gid. + ********************************************************************/ + +gid_t pdb_group_rid_to_gid(uint32 group_rid) +{ + return (gid_t)(((group_rid & (~GROUP_RID_TYPE))- 1000)/RID_MULTIPLIER); +} + +/******************************************************************* + converts NT Group RID to a UNIX uid. + + warning: you must not call that function only + you must do a call to the group mapping first. + there is not anymore a direct link between the gid and the rid. + ********************************************************************/ + +uint32 pdb_gid_to_group_rid(gid_t gid) +{ + return (((((uint32)gid)*RID_MULTIPLIER) + 1000) | GROUP_RID_TYPE); +} + +/******************************************************************* + Decides if a RID is a well known RID. + ********************************************************************/ + +static BOOL pdb_rid_is_well_known(uint32 rid) +{ + return (rid < 1000); +} + +/******************************************************************* + Decides if a RID is a user or group RID. + ********************************************************************/ + +BOOL pdb_rid_is_user(uint32 rid) +{ + /* 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. + */ + if(pdb_rid_is_well_known(rid)) { + /* + * The only well known user RIDs are DOMAIN_USER_RID_ADMIN + * and DOMAIN_USER_RID_GUEST. + */ + if(rid == DOMAIN_USER_RID_ADMIN || rid == DOMAIN_USER_RID_GUEST) + return True; + } else if((rid & RID_TYPE_MASK) == USER_RID_TYPE) { + return True; + } + return False; +} + +/******************************************************************* + Convert a rid into a name. Used in the lookup SID rpc. + ********************************************************************/ + +BOOL local_lookup_sid(DOM_SID *sid, char *name, enum SID_NAME_USE *psid_name_use) +{ + uint32 rid; + BOOL is_user; + SAM_ACCOUNT *sam_account = NULL; + BOOL found = False; + + sid_peek_rid(sid, &rid); + is_user = pdb_rid_is_user(rid); + *psid_name_use = SID_NAME_UNKNOWN; + + DEBUG(5,("local_lookup_sid: looking up %s RID %u.\n", is_user ? "user" : + "group", (unsigned int)rid)); + + if(is_user) { + if(rid == DOMAIN_USER_RID_ADMIN) { + char **admin_list = lp_admin_users(-1); + *psid_name_use = SID_NAME_USER; + if (admin_list) { + char *p = *admin_list; + if(!next_token(&p, name, NULL, sizeof(fstring))) + fstrcpy(name, "Administrator"); + } else { + fstrcpy(name, "Administrator"); + } + } else if (rid == DOMAIN_USER_RID_GUEST) { + char *p = lp_guestaccount(); + *psid_name_use = SID_NAME_USER; + if(!next_token(&p, name, NULL, sizeof(fstring))) + fstrcpy(name, "Guest"); + } else { + uid_t uid; + struct passwd *pass; + + /* + * Don't try to convert the rid to a name if + * running in appliance mode + */ + if (lp_hide_local_users()) + return False; + + if (!NT_STATUS_IS_OK(pdb_init_sam(&sam_account))) { + return False; + } + + if (pdb_getsampwrid(sam_account, rid)) { + fstrcpy(name, pdb_get_username(sam_account)); + *psid_name_use = SID_NAME_USER; + found = True; + } + + pdb_free_sam(&sam_account); + + if (found) { + return True; + } + + uid = fallback_pdb_user_rid_to_uid(rid); + pass = getpwuid_alloc(uid); + + *psid_name_use = SID_NAME_USER; + + DEBUG(5,("local_lookup_sid: looking up uid %u %s\n", (unsigned int)uid, + pass ? "succeeded" : "failed" )); + + if(!pass) { + slprintf(name, sizeof(fstring)-1, "unix_user.%u", (unsigned int)uid); + return True; + } + + fstrcpy(name, pass->pw_name); + + DEBUG(5,("local_lookup_sid: found user %s for rid %u\n", name, + (unsigned int)rid )); + + passwd_free(&pass); + } + + } else { + gid_t gid; + struct group *gr; + GROUP_MAP map; + + /* + * Don't try to convert the rid to a name if running + * in appliance mode + */ + + if (lp_hide_local_users()) + return False; + + /* check if it's a mapped group */ + if (get_group_map_from_sid(*sid, &map, MAPPING_WITHOUT_PRIV)) { + if (map.gid!=-1) { + DEBUG(5,("local_lookup_sid: mapped group %s to gid %u\n", map.nt_name, (unsigned int)map.gid)); + fstrcpy(name, map.nt_name); + *psid_name_use = map.sid_name_use; + return True; + } + } + + gid = pdb_group_rid_to_gid(rid); + gr = getgrgid(gid); + + *psid_name_use = SID_NAME_ALIAS; + + DEBUG(5,("local_lookup_sid: looking up gid %u %s\n", (unsigned int)gid, + gr ? "succeeded" : "failed" )); + + if(!gr) { + slprintf(name, sizeof(fstring)-1, "unix_group.%u", (unsigned int)gid); + return False; + } + + fstrcpy( name, gr->gr_name); + + DEBUG(5,("local_lookup_sid: found group %s for rid %u\n", name, + (unsigned int)rid )); + } + + return True; +} + +/******************************************************************* + Convert a name into a SID. Used in the lookup name rpc. + ********************************************************************/ + +BOOL local_lookup_name(const char *c_user, DOM_SID *psid, enum SID_NAME_USE *psid_name_use) +{ + extern DOM_SID global_sid_World_Domain; + struct passwd *pass = NULL; + DOM_SID local_sid; + fstring user; + SAM_ACCOUNT *sam_account = NULL; + BOOL found = False; + + *psid_name_use = SID_NAME_UNKNOWN; + + /* + * user may be quoted a const string, and map_username and + * friends can modify it. Make a modifiable copy. JRA. + */ + + fstrcpy(user, c_user); + + sid_copy(&local_sid, &global_sam_sid); + + /* + * Special case for MACHINE\Everyone. Map to the world_sid. + */ + + if(strequal(user, "Everyone")) { + sid_copy( psid, &global_sid_World_Domain); + sid_append_rid(psid, 0); + *psid_name_use = SID_NAME_ALIAS; + return True; + } + + /* + * Don't lookup local unix users if running in appliance mode + */ + if (lp_hide_local_users()) + return False; + + (void)map_username(user); + + if (!NT_STATUS_IS_OK(pdb_init_sam(&sam_account))) { + return False; + } + + if (pdb_getsampwnam(sam_account, user)) { + sid_append_rid( &local_sid, pdb_get_user_rid(sam_account)); + *psid_name_use = SID_NAME_USER; + + sid_copy( psid, &local_sid); + found = True; + } + + pdb_free_sam(&sam_account); + + if (!found && (pass = Get_Pwnam(user))) { + sid_append_rid( &local_sid, fallback_pdb_uid_to_user_rid(pass->pw_uid)); + *psid_name_use = SID_NAME_USER; + pdb_free_sam(&sam_account); + + } else if (!found) { + /* + * Maybe it was a group ? + */ + struct group *grp; + GROUP_MAP map; + + pdb_free_sam(&sam_account); + + /* check if it's a mapped group */ + if (get_group_map_from_ntname(user, &map, MAPPING_WITHOUT_PRIV)) { + if (map.gid!=-1) { + /* yes it's a mapped group to a valid unix group */ + sid_copy(&local_sid, &map.sid); + *psid_name_use = map.sid_name_use; + } + else + /* it's a correct name but not mapped so it points to nothing*/ + return False; + } else { + /* it's not a mapped group */ + grp = getgrnam(user); + if(!grp) + return False; + + /* + *check if it's mapped, if it is reply it doesn't exist + * + * that's to prevent this case: + * + * unix group ug is mapped to nt group ng + * someone does a lookup on ug + * we must not reply as it doesn't "exist" anymore + * for NT. For NT only ng exists. + * JFM, 30/11/2001 + */ + + if(get_group_map_from_gid(grp->gr_gid, &map, MAPPING_WITHOUT_PRIV)){ + return False; + } + + sid_append_rid( &local_sid, pdb_gid_to_group_rid(grp->gr_gid)); + *psid_name_use = SID_NAME_ALIAS; + } + } + + sid_copy( psid, &local_sid); + + return True; +} + +/**************************************************************************** + Convert a uid to SID - locally. +****************************************************************************/ + +DOM_SID *local_uid_to_sid(DOM_SID *psid, uid_t uid) +{ + extern DOM_SID global_sam_sid; + struct passwd *pass; + SAM_ACCOUNT *sam_user = NULL; + + sid_copy(psid, &global_sam_sid); + + if(!(pass = getpwuid_alloc(uid))) + return NULL; + + if (NT_STATUS_IS_ERR(pdb_init_sam(&sam_user))) { + passwd_free(&pass); + return NULL; + } + + if (!pdb_getsampwnam(sam_user, pass->pw_name)) { + pdb_free_sam(&sam_user); + return NULL; + } + + passwd_free(&pass); + + sid_append_rid(psid, pdb_get_user_rid(sam_user)); + + pdb_free_sam(&sam_user); + + return psid; +} + +/**************************************************************************** + Convert a SID to uid - locally. +****************************************************************************/ + +BOOL local_sid_to_uid(uid_t *puid, DOM_SID *psid, enum SID_NAME_USE *name_type) +{ + extern DOM_SID global_sam_sid; + + DOM_SID dom_sid; + uint32 rid; + fstring str; + struct passwd *pass; + SAM_ACCOUNT *sam_user = NULL; + + *name_type = SID_NAME_UNKNOWN; + + sid_copy(&dom_sid, psid); + sid_split_rid(&dom_sid, &rid); + + if (!pdb_rid_is_user(rid)) + return False; + + /* + * We can only convert to a uid if this is our local + * Domain SID (ie. we are the controling authority). + */ + if (!sid_equal(&global_sam_sid, &dom_sid)) + return False; + + if (NT_STATUS_IS_ERR(pdb_init_sam(&sam_user))) + return False; + + if (!pdb_getsampwrid(sam_user, rid)) { + pdb_free_sam(&sam_user); + return False; + } + + *puid = pdb_get_uid(sam_user); + if (*puid == -1) + return False; + + pdb_free_sam(&sam_user); + + /* + * Ensure this uid really does exist. + */ + if(!(pass = getpwuid_alloc(*puid))) + return False; + + DEBUG(10,("local_sid_to_uid: SID %s -> uid (%u) (%s).\n", sid_to_string( str, psid), + (unsigned int)*puid, pass->pw_name )); + + passwd_free(&pass); + + *name_type = SID_NAME_USER; + + return True; +} + +/**************************************************************************** + Convert a gid to SID - locally. +****************************************************************************/ + +DOM_SID *local_gid_to_sid(DOM_SID *psid, gid_t gid) +{ + extern DOM_SID global_sam_sid; + GROUP_MAP map; + + sid_copy(psid, &global_sam_sid); + + if (get_group_map_from_gid(gid, &map, MAPPING_WITHOUT_PRIV)) { + sid_copy(psid, &map.sid); + } + else { + sid_append_rid(psid, pdb_gid_to_group_rid(gid)); + } + + return psid; +} + +/**************************************************************************** + Convert a SID to gid - locally. +****************************************************************************/ + +BOOL local_sid_to_gid(gid_t *pgid, DOM_SID *psid, enum SID_NAME_USE *name_type) +{ + extern DOM_SID global_sam_sid; + DOM_SID dom_sid; + uint32 rid; + fstring str; + struct group *grp; + GROUP_MAP map; + + *name_type = SID_NAME_UNKNOWN; + + sid_copy(&dom_sid, psid); + sid_split_rid(&dom_sid, &rid); + + /* + * We can only convert to a gid if this is our local + * Domain SID (ie. we are the controling authority). + * + * Or in the Builtin SID too. JFM, 11/30/2001 + */ + + if (!sid_equal(&global_sam_sid, &dom_sid)) + return False; + + if (pdb_rid_is_user(rid)) + return False; + + if (get_group_map_from_sid(*psid, &map, MAPPING_WITHOUT_PRIV)) { + + /* the SID is in the mapping table but not mapped */ + if (map.gid==-1) + return False; + + sid_peek_rid(&map.sid, &rid); + *pgid = rid; + *name_type = map.sid_name_use; + } else { + *pgid = pdb_group_rid_to_gid(rid); + *name_type = SID_NAME_ALIAS; + } + + /* + * Ensure this gid really does exist. + */ + + if(!(grp = getgrgid(*pgid))) + return False; + + DEBUG(10,("local_sid_to_gid: SID %s -> gid (%u) (%s).\n", sid_to_string( str, psid), + (unsigned int)*pgid, grp->gr_name )); + + return True; +} + +/** + * Quick hack to do an easy ucs2 -> mulitbyte conversion + * @return static buffer containing the converted string + **/ + +static char *pdb_convert(const UNISTR2 *from) +{ + static pstring convert_buffer; + *convert_buffer = 0; + if (!from) { + return convert_buffer; + } + + unistr2_to_ascii(convert_buffer, from, sizeof(pstring)); + return convert_buffer; +} + +/************************************************************* + Copies a SAM_USER_INFO_23 to a SAM_ACCOUNT + **************************************************************/ + +void copy_id23_to_sam_passwd(SAM_ACCOUNT *to, SAM_USER_INFO_23 *from) +{ + + if (from == NULL || to == NULL) + return; + + pdb_set_logon_time(to,nt_time_to_unix(&from->logon_time), True); + pdb_set_logoff_time(to,nt_time_to_unix(&from->logoff_time), True); + pdb_set_kickoff_time(to, nt_time_to_unix(&from->kickoff_time), True); + pdb_set_pass_can_change_time(to, nt_time_to_unix(&from->pass_can_change_time), True); + pdb_set_pass_must_change_time(to, nt_time_to_unix(&from->pass_must_change_time), True); + + pdb_set_pass_last_set_time(to, nt_time_to_unix(&from->pass_last_set_time)); + + if (from->uni_user_name.buffer) + pdb_set_username(to , pdb_convert(&from->uni_user_name )); + if (from->uni_full_name.buffer) + pdb_set_fullname(to , pdb_convert(&from->uni_full_name )); + if (from->uni_home_dir.buffer) + pdb_set_homedir(to , pdb_convert(&from->uni_home_dir ), True); + if (from->uni_dir_drive.buffer) + pdb_set_dir_drive(to , pdb_convert(&from->uni_dir_drive ), True); + if (from->uni_logon_script.buffer) + pdb_set_logon_script(to , pdb_convert(&from->uni_logon_script), True); + if (from->uni_profile_path.buffer) + pdb_set_profile_path(to , pdb_convert(&from->uni_profile_path), True); + if (from->uni_acct_desc.buffer) + pdb_set_acct_desc(to , pdb_convert(&from->uni_acct_desc )); + if (from->uni_workstations.buffer) + pdb_set_workstations(to , pdb_convert(&from->uni_workstations)); + if (from->uni_unknown_str.buffer) + pdb_set_unknown_str(to , pdb_convert(&from->uni_unknown_str )); + if (from->uni_munged_dial.buffer) + pdb_set_munged_dial(to , pdb_convert(&from->uni_munged_dial )); + + if (from->user_rid) + pdb_set_user_rid(to, from->user_rid); + if (from->group_rid) + pdb_set_group_rid(to, from->group_rid); + + pdb_set_acct_ctrl(to, from->acb_info); + pdb_set_unknown_3(to, from->unknown_3); + + pdb_set_logon_divs(to, from->logon_divs); + pdb_set_hours_len(to, from->logon_hrs.len); + pdb_set_hours(to, from->logon_hrs.hours); + + pdb_set_unknown_5(to, from->unknown_5); + pdb_set_unknown_6(to, from->unknown_6); +} + + +/************************************************************* + Copies a sam passwd. + **************************************************************/ + +void copy_id21_to_sam_passwd(SAM_ACCOUNT *to, SAM_USER_INFO_21 *from) +{ + if (from == NULL || to == NULL) + return; + + pdb_set_logon_time(to,nt_time_to_unix(&from->logon_time), True); + pdb_set_logoff_time(to,nt_time_to_unix(&from->logoff_time), True); + pdb_set_kickoff_time(to, nt_time_to_unix(&from->kickoff_time), True); + pdb_set_pass_can_change_time(to, nt_time_to_unix(&from->pass_can_change_time), True); + pdb_set_pass_must_change_time(to, nt_time_to_unix(&from->pass_must_change_time), True); + + pdb_set_pass_last_set_time(to, nt_time_to_unix(&from->pass_last_set_time)); + + if (from->uni_user_name.buffer) + pdb_set_username(to , pdb_convert(&from->uni_user_name )); + if (from->uni_full_name.buffer) + pdb_set_fullname(to , pdb_convert(&from->uni_full_name )); + if (from->uni_home_dir.buffer) + pdb_set_homedir(to , pdb_convert(&from->uni_home_dir ), True); + if (from->uni_dir_drive.buffer) + pdb_set_dir_drive(to , pdb_convert(&from->uni_dir_drive ), True); + if (from->uni_logon_script.buffer) + pdb_set_logon_script(to , pdb_convert(&from->uni_logon_script), True); + if (from->uni_profile_path.buffer) + pdb_set_profile_path(to , pdb_convert(&from->uni_profile_path), True); + if (from->uni_acct_desc.buffer) + pdb_set_acct_desc(to , pdb_convert(&from->uni_acct_desc )); + if (from->uni_workstations.buffer) + pdb_set_workstations(to , pdb_convert(&from->uni_workstations)); + if (from->uni_unknown_str.buffer) + pdb_set_unknown_str(to , pdb_convert(&from->uni_unknown_str )); + if (from->uni_munged_dial.buffer) + pdb_set_munged_dial(to , pdb_convert(&from->uni_munged_dial )); + + if (from->user_rid) + pdb_set_user_rid(to, from->user_rid); + if (from->group_rid) + pdb_set_group_rid(to, from->group_rid); + + /* FIXME!! Do we need to copy the passwords here as well? + I don't know. Need to figure this out --jerry */ + + /* Passwords dealt with in caller --abartlet */ + + pdb_set_acct_ctrl(to, from->acb_info); + pdb_set_unknown_3(to, from->unknown_3); + + pdb_set_logon_divs(to, from->logon_divs); + pdb_set_hours_len(to, from->logon_hrs.len); + pdb_set_hours(to, from->logon_hrs.hours); + + pdb_set_unknown_5(to, from->unknown_5); + pdb_set_unknown_6(to, from->unknown_6); +} + + +/************************************************************* + Change a password entry in the local smbpasswd file. + + FIXME!! The function needs to be abstracted into the + passdb interface or something. It is currently being called + by _api_samr_create_user() in rpc_server/srv_samr.c, + in SWAT and by smbpasswd/pdbedit. + + --jerry + *************************************************************/ + +BOOL local_password_change(const char *user_name, int local_flags, + const char *new_passwd, + char *err_str, size_t err_str_len, + char *msg_str, size_t msg_str_len) +{ + struct passwd *pwd = NULL; + SAM_ACCOUNT *sam_pass=NULL; + + *err_str = '\0'; + *msg_str = '\0'; + + /* Get the smb passwd entry for this user */ + pdb_init_sam(&sam_pass); + if(!pdb_getsampwnam(sam_pass, user_name)) { + pdb_free_sam(&sam_pass); + + if (local_flags & LOCAL_ADD_USER) { + pwd = getpwnam_alloc(user_name); + } else if (local_flags & LOCAL_DELETE_USER) { + /* Might not exist in /etc/passwd */ + } else { + slprintf(err_str, err_str_len-1,"Failed to find entry for user %s.\n", user_name); + return False; + } + + if (pwd) { + /* Local user found, so init from this */ + if (!NT_STATUS_IS_OK(pdb_init_sam_pw(&sam_pass, pwd))){ + slprintf(err_str, err_str_len-1, "Failed initialise SAM_ACCOUNT for user %s.\n", user_name); + passwd_free(&pwd); + return False; + } + + passwd_free(&pwd); + } else { + if (!NT_STATUS_IS_OK(pdb_init_sam(&sam_pass))){ + slprintf(err_str, err_str_len-1, "Failed initialise SAM_ACCOUNT for user %s.\n", user_name); + return False; + } + + if (!pdb_set_username(sam_pass, user_name)) { + slprintf(err_str, err_str_len - 1, "Failed to set username for user %s.\n", user_name); + pdb_free_sam(&sam_pass); + return False; + } + } + if (local_flags & LOCAL_TRUST_ACCOUNT) { + if (!pdb_set_acct_ctrl(sam_pass, ACB_WSTRUST)) { + slprintf(err_str, err_str_len - 1, "Failed to set 'trusted workstation account' flags for user %s.\n", user_name); + pdb_free_sam(&sam_pass); + return False; + } + } else if (local_flags & LOCAL_INTERDOM_ACCOUNT) { + if (!pdb_set_acct_ctrl(sam_pass, ACB_DOMTRUST)) { + slprintf(err_str, err_str_len - 1, "Failed to set 'domain trust account' flags for user %s.\n", user_name); + pdb_free_sam(&sam_pass); + return False; + } + } else { + if (!pdb_set_acct_ctrl(sam_pass, ACB_NORMAL)) { + slprintf(err_str, err_str_len - 1, "Failed to set 'normal account' flags for user %s.\n", user_name); + pdb_free_sam(&sam_pass); + return False; + } + } + + } else { + /* the entry already existed */ + local_flags &= ~LOCAL_ADD_USER; + } + + /* + * We are root - just write the new password + * and the valid last change time. + */ + + if (local_flags & LOCAL_DISABLE_USER) { + if (!pdb_set_acct_ctrl (sam_pass, pdb_get_acct_ctrl(sam_pass)|ACB_DISABLED)) { + slprintf(err_str, err_str_len-1, "Failed to set 'disabled' flag for user %s.\n", user_name); + pdb_free_sam(&sam_pass); + return False; + } + } else if (local_flags & LOCAL_ENABLE_USER) { + if (!pdb_set_acct_ctrl (sam_pass, pdb_get_acct_ctrl(sam_pass)&(~ACB_DISABLED))) { + slprintf(err_str, err_str_len-1, "Failed to unset 'disabled' flag for user %s.\n", user_name); + pdb_free_sam(&sam_pass); + return False; + } + } + + if (local_flags & LOCAL_SET_NO_PASSWORD) { + if (!pdb_set_acct_ctrl (sam_pass, pdb_get_acct_ctrl(sam_pass)|ACB_PWNOTREQ)) { + slprintf(err_str, err_str_len-1, "Failed to set 'no password required' flag for user %s.\n", user_name); + pdb_free_sam(&sam_pass); + return False; + } + } else if (local_flags & LOCAL_SET_PASSWORD) { + /* + * If we're dealing with setting a completely empty user account + * ie. One with a password of 'XXXX', but not set disabled (like + * an account created from scratch) then if the old password was + * 'XX's then getsmbpwent will have set the ACB_DISABLED flag. + * We remove that as we're giving this user their first password + * and the decision hasn't really been made to disable them (ie. + * don't create them disabled). JRA. + */ + if ((pdb_get_lanman_passwd(sam_pass)==NULL) && (pdb_get_acct_ctrl(sam_pass)&ACB_DISABLED)) { + if (!pdb_set_acct_ctrl (sam_pass, pdb_get_acct_ctrl(sam_pass)&(~ACB_DISABLED))) { + slprintf(err_str, err_str_len-1, "Failed to unset 'disabled' flag for user %s.\n", user_name); + pdb_free_sam(&sam_pass); + return False; + } + } + if (!pdb_set_acct_ctrl (sam_pass, pdb_get_acct_ctrl(sam_pass)&(~ACB_PWNOTREQ))) { + slprintf(err_str, err_str_len-1, "Failed to unset 'no password required' flag for user %s.\n", user_name); + pdb_free_sam(&sam_pass); + return False; + } + + if (!pdb_set_plaintext_passwd (sam_pass, new_passwd)) { + slprintf(err_str, err_str_len-1, "Failed to set password for user %s.\n", user_name); + pdb_free_sam(&sam_pass); + return False; + } + } + + if (local_flags & LOCAL_ADD_USER) { + if (pdb_add_sam_account(sam_pass)) { + slprintf(msg_str, msg_str_len-1, "Added user %s.\n", user_name); + pdb_free_sam(&sam_pass); + return True; + } else { + slprintf(err_str, err_str_len-1, "Failed to add entry for user %s.\n", user_name); + pdb_free_sam(&sam_pass); + return False; + } + } else if (local_flags & LOCAL_DELETE_USER) { + if (!pdb_delete_sam_account(sam_pass)) { + slprintf(err_str,err_str_len-1, "Failed to delete entry for user %s.\n", user_name); + pdb_free_sam(&sam_pass); + return False; + } + slprintf(msg_str, msg_str_len-1, "Deleted user %s.\n", user_name); + } else { + if(!pdb_update_sam_account(sam_pass)) { + slprintf(err_str, err_str_len-1, "Failed to modify entry for user %s.\n", user_name); + pdb_free_sam(&sam_pass); + return False; + } + if(local_flags & LOCAL_DISABLE_USER) + slprintf(msg_str, msg_str_len-1, "Disabled user %s.\n", user_name); + else if (local_flags & LOCAL_ENABLE_USER) + slprintf(msg_str, msg_str_len-1, "Enabled user %s.\n", user_name); + else if (local_flags & LOCAL_SET_NO_PASSWORD) + slprintf(msg_str, msg_str_len-1, "User %s password set to none.\n", user_name); + } + + pdb_free_sam(&sam_pass); + return True; +} |