/* Unix SMB/CIFS implementation. dump the remote SAM using rpc samsync operations Copyright (C) Andrew Tridgell 2002 Copyright (C) Tim Potter 2001,2002 Copyright (C) Jim McDonough <jmcd@us.ibm.com> 2005 Modified by Volker Lendecke 2002 Copyright (C) Jeremy Allison 2005. Copyright (C) Guenther Deschner 2008. 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 3 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, see <http://www.gnu.org/licenses/>. */ #include "includes.h" #include "libnet/libnet.h" /* Convert a struct samu_DELTA to a struct samu. */ #define STRING_CHANGED (old_string && !new_string) ||\ (!old_string && new_string) ||\ (old_string && new_string && (strcmp(old_string, new_string) != 0)) #define STRING_CHANGED_NC(s1,s2) ((s1) && !(s2)) ||\ (!(s1) && (s2)) ||\ ((s1) && (s2) && (strcmp((s1), (s2)) != 0)) static NTSTATUS sam_account_from_delta(struct samu *account, struct netr_DELTA_USER *r) { const char *old_string, *new_string; time_t unix_time, stored_time; uchar lm_passwd[16], nt_passwd[16]; static uchar zero_buf[16]; /* Username, fullname, home dir, dir drive, logon script, acct desc, workstations, profile. */ if (r->account_name.string) { old_string = pdb_get_nt_username(account); new_string = r->account_name.string; if (STRING_CHANGED) { pdb_set_nt_username(account, new_string, PDB_CHANGED); } /* Unix username is the same - for sanity */ old_string = pdb_get_username( account ); if (STRING_CHANGED) { pdb_set_username(account, new_string, PDB_CHANGED); } } if (r->full_name.string) { old_string = pdb_get_fullname(account); new_string = r->full_name.string; if (STRING_CHANGED) pdb_set_fullname(account, new_string, PDB_CHANGED); } if (r->home_directory.string) { old_string = pdb_get_homedir(account); new_string = r->home_directory.string; if (STRING_CHANGED) pdb_set_homedir(account, new_string, PDB_CHANGED); } if (r->home_drive.string) { old_string = pdb_get_dir_drive(account); new_string = r->home_drive.string; if (STRING_CHANGED) pdb_set_dir_drive(account, new_string, PDB_CHANGED); } if (r->logon_script.string) { old_string = pdb_get_logon_script(account); new_string = r->logon_script.string; if (STRING_CHANGED) pdb_set_logon_script(account, new_string, PDB_CHANGED); } if (r->description.string) { old_string = pdb_get_acct_desc(account); new_string = r->description.string; if (STRING_CHANGED) pdb_set_acct_desc(account, new_string, PDB_CHANGED); } if (r->workstations.string) { old_string = pdb_get_workstations(account); new_string = r->workstations.string; if (STRING_CHANGED) pdb_set_workstations(account, new_string, PDB_CHANGED); } if (r->profile_path.string) { old_string = pdb_get_profile_path(account); new_string = r->profile_path.string; if (STRING_CHANGED) pdb_set_profile_path(account, new_string, PDB_CHANGED); } if (r->parameters.string) { DATA_BLOB mung; char *newstr; old_string = pdb_get_munged_dial(account); mung.length = r->parameters.length; mung.data = (uint8 *) r->parameters.string; newstr = (mung.length == 0) ? NULL : base64_encode_data_blob(talloc_tos(), mung); if (STRING_CHANGED_NC(old_string, newstr)) pdb_set_munged_dial(account, newstr, PDB_CHANGED); TALLOC_FREE(newstr); } /* User and group sid */ if (pdb_get_user_rid(account) != r->rid) pdb_set_user_sid_from_rid(account, r->rid, PDB_CHANGED); if (pdb_get_group_rid(account) != r->primary_gid) pdb_set_group_sid_from_rid(account, r->primary_gid, PDB_CHANGED); /* Logon and password information */ if (!nt_time_is_zero(&r->last_logon)) { unix_time = nt_time_to_unix(r->last_logon); stored_time = pdb_get_logon_time(account); if (stored_time != unix_time) pdb_set_logon_time(account, unix_time, PDB_CHANGED); } if (!nt_time_is_zero(&r->last_logoff)) { unix_time = nt_time_to_unix(r->last_logoff); stored_time = pdb_get_logoff_time(account); if (stored_time != unix_time) pdb_set_logoff_time(account, unix_time,PDB_CHANGED); } /* Logon Divs */ if (pdb_get_logon_divs(account) != r->logon_hours.units_per_week) pdb_set_logon_divs(account, r->logon_hours.units_per_week, PDB_CHANGED); #if 0 /* no idea what to do with this one - gd */ /* Max Logon Hours */ if (delta->unknown1 != pdb_get_unknown_6(account)) { pdb_set_unknown_6(account, delta->unknown1, PDB_CHANGED); } #endif /* Logon Hours Len */ if (r->logon_hours.units_per_week/8 != pdb_get_hours_len(account)) { pdb_set_hours_len(account, r->logon_hours.units_per_week/8, PDB_CHANGED); } /* Logon Hours */ if (r->logon_hours.bits) { char oldstr[44], newstr[44]; pdb_sethexhours(oldstr, pdb_get_hours(account)); pdb_sethexhours(newstr, r->logon_hours.bits); if (!strequal(oldstr, newstr)) pdb_set_hours(account, r->logon_hours.bits, PDB_CHANGED); } if (pdb_get_bad_password_count(account) != r->bad_password_count) pdb_set_bad_password_count(account, r->bad_password_count, PDB_CHANGED); if (pdb_get_logon_count(account) != r->logon_count) pdb_set_logon_count(account, r->logon_count, PDB_CHANGED); if (!nt_time_is_zero(&r->last_password_change)) { unix_time = nt_time_to_unix(r->last_password_change); stored_time = pdb_get_pass_last_set_time(account); if (stored_time != unix_time) pdb_set_pass_last_set_time(account, unix_time, PDB_CHANGED); } else { /* no last set time, make it now */ pdb_set_pass_last_set_time(account, time(NULL), PDB_CHANGED); } if (!nt_time_is_zero(&r->acct_expiry)) { unix_time = nt_time_to_unix(r->acct_expiry); stored_time = pdb_get_kickoff_time(account); if (stored_time != unix_time) pdb_set_kickoff_time(account, unix_time, PDB_CHANGED); } /* Decode hashes from password hash Note that win2000 may send us all zeros for the hashes if it doesn't think this channel is secure enough - don't set the passwords at all in that case */ if (memcmp(r->ntpassword.hash, zero_buf, 16) != 0) { sam_pwd_hash(r->rid, r->ntpassword.hash, lm_passwd, 0); pdb_set_lanman_passwd(account, lm_passwd, PDB_CHANGED); } if (memcmp(r->lmpassword.hash, zero_buf, 16) != 0) { sam_pwd_hash(r->rid, r->lmpassword.hash, nt_passwd, 0); pdb_set_nt_passwd(account, nt_passwd, PDB_CHANGED); } /* TODO: account expiry time */ pdb_set_acct_ctrl(account, r->acct_flags, PDB_CHANGED); pdb_set_domain(account, lp_workgroup(), PDB_CHANGED); return NT_STATUS_OK; } static NTSTATUS fetch_account_info(uint32_t rid, struct netr_DELTA_USER *r) { NTSTATUS nt_ret = NT_STATUS_UNSUCCESSFUL; fstring account; char *add_script = NULL; struct samu *sam_account=NULL; GROUP_MAP map; struct group *grp; DOM_SID user_sid; DOM_SID group_sid; struct passwd *passwd; fstring sid_string; fstrcpy(account, r->account_name.string); d_printf("Creating account: %s\n", account); if ( !(sam_account = samu_new( NULL )) ) { return NT_STATUS_NO_MEMORY; } if (!(passwd = Get_Pwnam_alloc(sam_account, account))) { /* Create appropriate user */ if (r->acct_flags & ACB_NORMAL) { add_script = talloc_strdup(sam_account, lp_adduser_script()); } else if ( (r->acct_flags & ACB_WSTRUST) || (r->acct_flags & ACB_SVRTRUST) || (r->acct_flags & ACB_DOMTRUST) ) { add_script = talloc_strdup(sam_account, lp_addmachine_script()); } else { DEBUG(1, ("Unknown user type: %s\n", pdb_encode_acct_ctrl(r->acct_flags, NEW_PW_FORMAT_SPACE_PADDED_LEN))); nt_ret = NT_STATUS_UNSUCCESSFUL; goto done; } if (!add_script) { nt_ret = NT_STATUS_NO_MEMORY; goto done; } if (*add_script) { int add_ret; add_script = talloc_all_string_sub(sam_account, add_script, "%u", account); if (!add_script) { nt_ret = NT_STATUS_NO_MEMORY; goto done; } add_ret = smbrun(add_script,NULL); DEBUG(add_ret ? 0 : 1,("fetch_account: Running the command `%s' " "gave %d\n", add_script, add_ret)); if (add_ret == 0) { smb_nscd_flush_user_cache(); } } /* try and find the possible unix account again */ if ( !(passwd = Get_Pwnam_alloc(sam_account, account)) ) { d_fprintf(stderr, "Could not create posix account info for '%s'\n", account); nt_ret = NT_STATUS_NO_SUCH_USER; goto done; } } sid_copy(&user_sid, get_global_sam_sid()); sid_append_rid(&user_sid, r->rid); DEBUG(3, ("Attempting to find SID %s for user %s in the passdb\n", sid_to_fstring(sid_string, &user_sid), account)); if (!pdb_getsampwsid(sam_account, &user_sid)) { sam_account_from_delta(sam_account, r); DEBUG(3, ("Attempting to add user SID %s for user %s in the passdb\n", sid_to_fstring(sid_string, &user_sid), pdb_get_username(sam_account))); if (!NT_STATUS_IS_OK(pdb_add_sam_account(sam_account))) { DEBUG(1, ("SAM Account for %s failed to be added to the passdb!\n", account)); return NT_STATUS_ACCESS_DENIED; } } else { sam_account_from_delta(sam_account, r); DEBUG(3, ("Attempting to update user SID %s for user %s in the passdb\n", sid_to_fstring(sid_string, &user_sid), pdb_get_username(sam_account))); if (!NT_STATUS_IS_OK(pdb_update_sam_account(sam_account))) { DEBUG(1, ("SAM Account for %s failed to be updated in the passdb!\n", account)); TALLOC_FREE(sam_account); return NT_STATUS_ACCESS_DENIED; } } if (pdb_get_group_sid(sam_account) == NULL) { return NT_STATUS_UNSUCCESSFUL; } group_sid = *pdb_get_group_sid(sam_account); if (!pdb_getgrsid(&map, group_sid)) { DEBUG(0, ("Primary group of %s has no mapping!\n", pdb_get_username(sam_account))); } else { if (map.gid != passwd->pw_gid) { if (!(grp = getgrgid(map.gid))) { DEBUG(0, ("Could not find unix group %lu for user %s (group SID=%s)\n", (unsigned long)map.gid, pdb_get_username(sam_account), sid_string_tos(&group_sid))); } else { smb_set_primary_group(grp->gr_name, pdb_get_username(sam_account)); } } } if ( !passwd ) { DEBUG(1, ("No unix user for this account (%s), cannot adjust mappings\n", pdb_get_username(sam_account))); } done: TALLOC_FREE(sam_account); return nt_ret; } static NTSTATUS fetch_group_info(uint32_t rid, struct netr_DELTA_GROUP *r) { fstring name; fstring comment; struct group *grp = NULL; DOM_SID group_sid; fstring sid_string; GROUP_MAP map; bool insert = true; fstrcpy(name, r->group_name.string); fstrcpy(comment, r->description.string); /* add the group to the mapping table */ sid_copy(&group_sid, get_global_sam_sid()); sid_append_rid(&group_sid, rid); sid_to_fstring(sid_string, &group_sid); if (pdb_getgrsid(&map, group_sid)) { if ( map.gid != -1 ) grp = getgrgid(map.gid); insert = false; } if (grp == NULL) { gid_t gid; /* No group found from mapping, find it from its name. */ if ((grp = getgrnam(name)) == NULL) { /* No appropriate group found, create one */ d_printf("Creating unix group: '%s'\n", name); if (smb_create_group(name, &gid) != 0) return NT_STATUS_ACCESS_DENIED; if ((grp = getgrnam(name)) == NULL) return NT_STATUS_ACCESS_DENIED; } } map.gid = grp->gr_gid; map.sid = group_sid; map.sid_name_use = SID_NAME_DOM_GRP; fstrcpy(map.nt_name, name); if (r->description.string) { fstrcpy(map.comment, comment); } else { fstrcpy(map.comment, ""); } if (insert) pdb_add_group_mapping_entry(&map); else pdb_update_group_mapping_entry(&map); return NT_STATUS_OK; } static NTSTATUS fetch_group_mem_info(uint32_t rid, struct netr_DELTA_GROUP_MEMBER *r) { int i; TALLOC_CTX *t = NULL; char **nt_members = NULL; char **unix_members; DOM_SID group_sid; GROUP_MAP map; struct group *grp; if (r->num_rids == 0) { return NT_STATUS_OK; } sid_copy(&group_sid, get_global_sam_sid()); sid_append_rid(&group_sid, rid); if (!get_domain_group_from_sid(group_sid, &map)) { DEBUG(0, ("Could not find global group %d\n", rid)); return NT_STATUS_NO_SUCH_GROUP; } if (!(grp = getgrgid(map.gid))) { DEBUG(0, ("Could not find unix group %lu\n", (unsigned long)map.gid)); return NT_STATUS_NO_SUCH_GROUP; } d_printf("Group members of %s: ", grp->gr_name); if (!(t = talloc_init("fetch_group_mem_info"))) { DEBUG(0, ("could not talloc_init\n")); return NT_STATUS_NO_MEMORY; } if (r->num_rids) { if ((nt_members = TALLOC_ZERO_ARRAY(t, char *, r->num_rids)) == NULL) { DEBUG(0, ("talloc failed\n")); talloc_free(t); return NT_STATUS_NO_MEMORY; } } else { nt_members = NULL; } for (i=0; i < r->num_rids; i++) { struct samu *member = NULL; DOM_SID member_sid; if ( !(member = samu_new(t)) ) { talloc_destroy(t); return NT_STATUS_NO_MEMORY; } sid_copy(&member_sid, get_global_sam_sid()); sid_append_rid(&member_sid, r->rids[i]); if (!pdb_getsampwsid(member, &member_sid)) { DEBUG(1, ("Found bogus group member: %d (member_sid=%s group=%s)\n", r->rids[i], sid_string_tos(&member_sid), grp->gr_name)); TALLOC_FREE(member); continue; } if (pdb_get_group_rid(member) == rid) { d_printf("%s(primary),", pdb_get_username(member)); TALLOC_FREE(member); continue; } d_printf("%s,", pdb_get_username(member)); nt_members[i] = talloc_strdup(t, pdb_get_username(member)); TALLOC_FREE(member); } d_printf("\n"); unix_members = grp->gr_mem; while (*unix_members) { bool is_nt_member = false; for (i=0; i < r->num_rids; i++) { if (nt_members[i] == NULL) { /* This was a primary group */ continue; } if (strcmp(*unix_members, nt_members[i]) == 0) { is_nt_member = true; break; } } if (!is_nt_member) { /* We look at a unix group member that is not an nt group member. So, remove it. NT is boss here. */ smb_delete_user_group(grp->gr_name, *unix_members); } unix_members += 1; } for (i=0; i < r->num_rids; i++) { bool is_unix_member = false; if (nt_members[i] == NULL) { /* This was the primary group */ continue; } unix_members = grp->gr_mem; while (*unix_members) { if (strcmp(*unix_members, nt_members[i]) == 0) { is_unix_member = true; break; } unix_members += 1; } if (!is_unix_member) { /* We look at a nt group member that is not a unix group member currently. So, add the nt group member. */ smb_add_user_group(grp->gr_name, nt_members[i]); } } talloc_destroy(t); return NT_STATUS_OK; } static NTSTATUS fetch_alias_info(uint32_t rid, struct netr_DELTA_ALIAS *r, const DOM_SID *dom_sid) { fstring name; fstring comment; struct group *grp = NULL; DOM_SID alias_sid; fstring sid_string; GROUP_MAP map; bool insert = true; fstrcpy(name, r->alias_name.string); fstrcpy(comment, r->description.string); /* Find out whether the group is already mapped */ sid_copy(&alias_sid, dom_sid); sid_append_rid(&alias_sid, rid); sid_to_fstring(sid_string, &alias_sid); if (pdb_getgrsid(&map, alias_sid)) { grp = getgrgid(map.gid); insert = false; } if (grp == NULL) { gid_t gid; /* No group found from mapping, find it from its name. */ if ((grp = getgrnam(name)) == NULL) { /* No appropriate group found, create one */ d_printf("Creating unix group: '%s'\n", name); if (smb_create_group(name, &gid) != 0) return NT_STATUS_ACCESS_DENIED; if ((grp = getgrgid(gid)) == NULL) return NT_STATUS_ACCESS_DENIED; } } map.gid = grp->gr_gid; map.sid = alias_sid; if (sid_equal(dom_sid, &global_sid_Builtin)) map.sid_name_use = SID_NAME_WKN_GRP; else map.sid_name_use = SID_NAME_ALIAS; fstrcpy(map.nt_name, name); fstrcpy(map.comment, comment); if (insert) pdb_add_group_mapping_entry(&map); else pdb_update_group_mapping_entry(&map); return NT_STATUS_OK; } static NTSTATUS fetch_alias_mem(uint32_t rid, struct netr_DELTA_ALIAS_MEMBER *r, const DOM_SID *dom_sid) { return NT_STATUS_OK; } static NTSTATUS fetch_domain_info(uint32_t rid, struct netr_DELTA_DOMAIN *r) { time_t u_max_age, u_min_age, u_logout; NTSTATUS nt_status = NT_STATUS_UNSUCCESSFUL; const char *domname; struct netr_AcctLockStr *lockstr = NULL; NTSTATUS status; TALLOC_CTX *mem_ctx = talloc_tos(); status = pull_netr_AcctLockStr(mem_ctx, &r->account_lockout, &lockstr); if (!NT_STATUS_IS_OK(status)) { d_printf("failed to pull account lockout string: %s\n", nt_errstr(status)); } u_max_age = uint64s_nt_time_to_unix_abs((uint64 *)&r->max_password_age); u_min_age = uint64s_nt_time_to_unix_abs((uint64 *)&r->min_password_age); u_logout = uint64s_nt_time_to_unix_abs((uint64 *)&r->force_logoff_time); domname = r->domain_name.string; if (!domname) { return NT_STATUS_NO_MEMORY; } /* we don't handle BUILTIN account policies */ if (!strequal(domname, get_global_sam_name())) { printf("skipping SAM_DOMAIN_INFO delta for '%s' (is not my domain)\n", domname); return NT_STATUS_OK; } if (!pdb_set_account_policy(AP_PASSWORD_HISTORY, r->password_history_length)) return nt_status; if (!pdb_set_account_policy(AP_MIN_PASSWORD_LEN, r->min_password_length)) return nt_status; if (!pdb_set_account_policy(AP_MAX_PASSWORD_AGE, (uint32)u_max_age)) return nt_status; if (!pdb_set_account_policy(AP_MIN_PASSWORD_AGE, (uint32)u_min_age)) return nt_status; if (!pdb_set_account_policy(AP_TIME_TO_LOGOUT, (uint32)u_logout)) return nt_status; if (lockstr) { time_t u_lockoutreset, u_lockouttime; u_lockoutreset = uint64s_nt_time_to_unix_abs(&lockstr->reset_count); u_lockouttime = uint64s_nt_time_to_unix_abs((uint64_t *)&lockstr->lockout_duration); if (!pdb_set_account_policy(AP_BAD_ATTEMPT_LOCKOUT, lockstr->bad_attempt_lockout)) return nt_status; if (!pdb_set_account_policy(AP_RESET_COUNT_TIME, (uint32_t)u_lockoutreset/60)) return nt_status; if (u_lockouttime != -1) u_lockouttime /= 60; if (!pdb_set_account_policy(AP_LOCK_ACCOUNT_DURATION, (uint32_t)u_lockouttime)) return nt_status; } if (!pdb_set_account_policy(AP_USER_MUST_LOGON_TO_CHG_PASS, r->logon_to_chgpass)) return nt_status; return NT_STATUS_OK; } static NTSTATUS fetch_sam_entry(TALLOC_CTX *mem_ctx, enum netr_SamDatabaseID database_id, struct netr_DELTA_ENUM *r, struct samsync_context *ctx) { switch(r->delta_type) { case NETR_DELTA_USER: fetch_account_info(r->delta_id_union.rid, r->delta_union.user); break; case NETR_DELTA_GROUP: fetch_group_info(r->delta_id_union.rid, r->delta_union.group); break; case NETR_DELTA_GROUP_MEMBER: fetch_group_mem_info(r->delta_id_union.rid, r->delta_union.group_member); break; case NETR_DELTA_ALIAS: fetch_alias_info(r->delta_id_union.rid, r->delta_union.alias, ctx->domain_sid); break; case NETR_DELTA_ALIAS_MEMBER: fetch_alias_mem(r->delta_id_union.rid, r->delta_union.alias_member, ctx->domain_sid); break; case NETR_DELTA_DOMAIN: fetch_domain_info(r->delta_id_union.rid, r->delta_union.domain); break; /* The following types are recognised but not handled */ case NETR_DELTA_RENAME_GROUP: d_printf("NETR_DELTA_RENAME_GROUP not handled\n"); break; case NETR_DELTA_RENAME_USER: d_printf("NETR_DELTA_RENAME_USER not handled\n"); break; case NETR_DELTA_RENAME_ALIAS: d_printf("NETR_DELTA_RENAME_ALIAS not handled\n"); break; case NETR_DELTA_POLICY: d_printf("NETR_DELTA_POLICY not handled\n"); break; case NETR_DELTA_TRUSTED_DOMAIN: d_printf("NETR_DELTA_TRUSTED_DOMAIN not handled\n"); break; case NETR_DELTA_ACCOUNT: d_printf("NETR_DELTA_ACCOUNT not handled\n"); break; case NETR_DELTA_SECRET: d_printf("NETR_DELTA_SECRET not handled\n"); break; case NETR_DELTA_DELETE_GROUP: d_printf("NETR_DELTA_DELETE_GROUP not handled\n"); break; case NETR_DELTA_DELETE_USER: d_printf("NETR_DELTA_DELETE_USER not handled\n"); break; case NETR_DELTA_MODIFY_COUNT: d_printf("NETR_DELTA_MODIFY_COUNT not handled\n"); break; case NETR_DELTA_DELETE_ALIAS: d_printf("NETR_DELTA_DELETE_ALIAS not handled\n"); break; case NETR_DELTA_DELETE_TRUST: d_printf("NETR_DELTA_DELETE_TRUST not handled\n"); break; case NETR_DELTA_DELETE_ACCOUNT: d_printf("NETR_DELTA_DELETE_ACCOUNT not handled\n"); break; case NETR_DELTA_DELETE_SECRET: d_printf("NETR_DELTA_DELETE_SECRET not handled\n"); break; case NETR_DELTA_DELETE_GROUP2: d_printf("NETR_DELTA_DELETE_GROUP2 not handled\n"); break; case NETR_DELTA_DELETE_USER2: d_printf("NETR_DELTA_DELETE_USER2 not handled\n"); break; default: d_printf("Unknown delta record type %d\n", r->delta_type); break; } return NT_STATUS_OK; } NTSTATUS fetch_sam_entries(TALLOC_CTX *mem_ctx, enum netr_SamDatabaseID database_id, struct netr_DELTA_ENUM_ARRAY *r, bool last_query, struct samsync_context *ctx) { int i; for (i = 0; i < r->num_deltas; i++) { fetch_sam_entry(mem_ctx, database_id, &r->delta_enum[i], ctx); } return NT_STATUS_OK; }