/* Unix SMB/CIFS implementation. Convert a server info struct into the form for PAC and NETLOGON replies Copyright (C) Andrew Bartlett <abartlet@samba.org> 2004-2011 Copyright (C) Stefan Metzmacher <metze@samba.org> 2005 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 "librpc/gen_ndr/auth.h" #include "libcli/security/security.h" #include "auth/auth_sam_reply.h" NTSTATUS auth_convert_user_info_dc_sambaseinfo(TALLOC_CTX *mem_ctx, struct auth_user_info_dc *user_info_dc, struct netr_SamBaseInfo **_sam) { NTSTATUS status; struct auth_user_info *info; struct netr_SamBaseInfo *sam = talloc_zero(mem_ctx, struct netr_SamBaseInfo); NT_STATUS_HAVE_NO_MEMORY(sam); if (user_info_dc->num_sids > PRIMARY_USER_SID_INDEX) { status = dom_sid_split_rid(sam, &user_info_dc->sids[PRIMARY_USER_SID_INDEX], &sam->domain_sid, &sam->rid); if (!NT_STATUS_IS_OK(status)) { return status; } } else { return NT_STATUS_INVALID_PARAMETER; } if (user_info_dc->num_sids > PRIMARY_GROUP_SID_INDEX) { status = dom_sid_split_rid(NULL, &user_info_dc->sids[PRIMARY_GROUP_SID_INDEX], NULL, &sam->primary_gid); if (!NT_STATUS_IS_OK(status)) { return status; } } else { /* if we have to encode something like SYSTEM (with no * second SID in the token) then this is the only * choice */ sam->primary_gid = sam->rid; } info = user_info_dc->info; sam->logon_time = info->last_logon; sam->logoff_time = info->last_logoff; sam->kickoff_time = info->acct_expiry; sam->last_password_change = info->last_password_change; sam->allow_password_change = info->allow_password_change; sam->force_password_change = info->force_password_change; sam->account_name.string = info->account_name; sam->full_name.string = info->full_name; sam->logon_script.string = info->logon_script; sam->profile_path.string = info->profile_path; sam->home_directory.string = info->home_directory; sam->home_drive.string = info->home_drive; sam->logon_count = info->logon_count; sam->bad_password_count = info->bad_password_count; sam->groups.count = 0; sam->groups.rids = NULL; if (user_info_dc->num_sids > 2) { size_t i; sam->groups.rids = talloc_array(sam, struct samr_RidWithAttribute, user_info_dc->num_sids); if (sam->groups.rids == NULL) return NT_STATUS_NO_MEMORY; for (i=2; i<user_info_dc->num_sids; i++) { struct dom_sid *group_sid = &user_info_dc->sids[i]; if (!dom_sid_in_domain(sam->domain_sid, group_sid)) { /* We handle this elsewhere */ continue; } sam->groups.rids[sam->groups.count].rid = group_sid->sub_auths[group_sid->num_auths-1]; sam->groups.rids[sam->groups.count].attributes = SE_GROUP_MANDATORY | SE_GROUP_ENABLED_BY_DEFAULT | SE_GROUP_ENABLED; sam->groups.count += 1; } } sam->user_flags = 0; /* w2k3 uses NETLOGON_EXTRA_SIDS | NETLOGON_NTLMV2_ENABLED */ if (!user_info_dc->info->authenticated) { sam->user_flags |= NETLOGON_GUEST; } sam->acct_flags = user_info_dc->info->acct_flags; sam->logon_server.string = user_info_dc->info->logon_server; sam->logon_domain.string = user_info_dc->info->domain_name; sam->sub_auth_status = 0; sam->last_successful_logon = 0; sam->last_failed_logon = 0; sam->failed_logon_count = 0; sam->reserved = 0; ZERO_STRUCT(sam->key); if (user_info_dc->user_session_key.length == sizeof(sam->key.key)) { memcpy(sam->key.key, user_info_dc->user_session_key.data, sizeof(sam->key.key)); } ZERO_STRUCT(sam->LMSessKey); if (user_info_dc->lm_session_key.length == sizeof(sam->LMSessKey.key)) { memcpy(sam->LMSessKey.key, user_info_dc->lm_session_key.data, sizeof(sam->LMSessKey.key)); } *_sam = sam; return NT_STATUS_OK; } /* Note that the validity of the _sam3 structure is only as long as * the user_info_dc it was generated from */ NTSTATUS auth_convert_user_info_dc_saminfo3(TALLOC_CTX *mem_ctx, struct auth_user_info_dc *user_info_dc, struct netr_SamInfo3 **_sam3) { struct netr_SamBaseInfo *sam; struct netr_SamInfo3 *sam3 = talloc_zero(mem_ctx, struct netr_SamInfo3); NTSTATUS status; size_t i; NT_STATUS_HAVE_NO_MEMORY(sam3); status = auth_convert_user_info_dc_sambaseinfo(sam3, user_info_dc, &sam); if (!NT_STATUS_IS_OK(status)) { talloc_free(sam3); return status; } sam3->base = *sam; sam3->sidcount = 0; sam3->sids = NULL; sam3->sids = talloc_array(sam, struct netr_SidAttr, user_info_dc->num_sids); NT_STATUS_HAVE_NO_MEMORY_AND_FREE(sam3->sids, sam3); /* We don't put the user and group SIDs in there */ for (i=2; i<user_info_dc->num_sids; i++) { if (dom_sid_in_domain(sam->domain_sid, &user_info_dc->sids[i])) { continue; } sam3->sids[sam3->sidcount].sid = dom_sid_dup(sam3->sids, &user_info_dc->sids[i]); NT_STATUS_HAVE_NO_MEMORY_AND_FREE(sam3->sids[sam3->sidcount].sid, sam3); sam3->sids[sam3->sidcount].attributes = SE_GROUP_MANDATORY | SE_GROUP_ENABLED_BY_DEFAULT | SE_GROUP_ENABLED; sam3->sidcount += 1; } if (sam3->sidcount) { sam3->base.user_flags |= NETLOGON_EXTRA_SIDS; } else { sam3->sids = NULL; } *_sam3 = sam3; return NT_STATUS_OK; } /** * Make a user_info struct from the info3 or similar returned by a domain logon. * * The netr_SamInfo3 is also a key structure in the source3 auth subsystem */ NTSTATUS make_user_info_SamBaseInfo(TALLOC_CTX *mem_ctx, const char *account_name, struct netr_SamBaseInfo *base, bool authenticated, struct auth_user_info **_user_info) { struct auth_user_info *info; info = talloc_zero(mem_ctx, struct auth_user_info); NT_STATUS_HAVE_NO_MEMORY(info); if (base->account_name.string) { info->account_name = talloc_strdup(info, base->account_name.string); } else { info->account_name = talloc_strdup(info, account_name); } NT_STATUS_HAVE_NO_MEMORY(info->account_name); if (base->logon_domain.string) { info->domain_name = talloc_strdup(info, base->logon_domain.string); NT_STATUS_HAVE_NO_MEMORY(info->domain_name); } if (base->full_name.string) { info->full_name = talloc_strdup(info, base->full_name.string); NT_STATUS_HAVE_NO_MEMORY(info->full_name); } if (base->logon_script.string) { info->logon_script = talloc_strdup(info, base->logon_script.string); NT_STATUS_HAVE_NO_MEMORY(info->logon_script); } if (base->profile_path.string) { info->profile_path = talloc_strdup(info, base->profile_path.string); NT_STATUS_HAVE_NO_MEMORY(info->profile_path); } if (base->home_directory.string) { info->home_directory = talloc_strdup(info, base->home_directory.string); NT_STATUS_HAVE_NO_MEMORY(info->home_directory); } if (base->home_drive.string) { info->home_drive = talloc_strdup(info, base->home_drive.string); NT_STATUS_HAVE_NO_MEMORY(info->home_drive); } if (base->logon_server.string) { info->logon_server = talloc_strdup(info, base->logon_server.string); NT_STATUS_HAVE_NO_MEMORY(info->logon_server); } info->last_logon = base->logon_time; info->last_logoff = base->logoff_time; info->acct_expiry = base->kickoff_time; info->last_password_change = base->last_password_change; info->allow_password_change = base->allow_password_change; info->force_password_change = base->force_password_change; info->logon_count = base->logon_count; info->bad_password_count = base->bad_password_count; info->acct_flags = base->acct_flags; /* Only set authenticated if both NETLOGON_GUEST is not set, and authenticated is set */ info->authenticated = (authenticated && (!(base->user_flags & NETLOGON_GUEST))); *_user_info = info; return NT_STATUS_OK; } /** * Make a user_info_dc struct from the info3 returned by a domain logon */ NTSTATUS make_user_info_dc_netlogon_validation(TALLOC_CTX *mem_ctx, const char *account_name, uint16_t validation_level, union netr_Validation *validation, bool authenticated, struct auth_user_info_dc **_user_info_dc) { NTSTATUS status; struct auth_user_info_dc *user_info_dc; struct netr_SamBaseInfo *base = NULL; uint32_t i; switch (validation_level) { case 2: if (!validation || !validation->sam2) { return NT_STATUS_INVALID_PARAMETER; } base = &validation->sam2->base; break; case 3: if (!validation || !validation->sam3) { return NT_STATUS_INVALID_PARAMETER; } base = &validation->sam3->base; break; case 6: if (!validation || !validation->sam6) { return NT_STATUS_INVALID_PARAMETER; } base = &validation->sam6->base; break; default: return NT_STATUS_INVALID_LEVEL; } user_info_dc = talloc(mem_ctx, struct auth_user_info_dc); NT_STATUS_HAVE_NO_MEMORY(user_info_dc); /* Here is where we should check the list of trusted domains, and verify that the SID matches. */ if (!base->domain_sid) { DEBUG(0, ("Cannot operate on a Netlogon Validation without a domain SID")); return NT_STATUS_INVALID_PARAMETER; } /* The IDL layer would be a better place to check this, but to * guard the integer addition below, we double-check */ if (base->groups.count > 65535) { return NT_STATUS_INVALID_PARAMETER; } user_info_dc->num_sids = 2; user_info_dc->sids = talloc_array(user_info_dc, struct dom_sid, user_info_dc->num_sids + base->groups.count); NT_STATUS_HAVE_NO_MEMORY(user_info_dc->sids); user_info_dc->sids[PRIMARY_USER_SID_INDEX] = *base->domain_sid; if (!sid_append_rid(&user_info_dc->sids[PRIMARY_USER_SID_INDEX], base->rid)) { return NT_STATUS_INVALID_PARAMETER; } user_info_dc->sids[PRIMARY_GROUP_SID_INDEX] = *base->domain_sid; if (!sid_append_rid(&user_info_dc->sids[PRIMARY_GROUP_SID_INDEX], base->primary_gid)) { return NT_STATUS_INVALID_PARAMETER; } for (i = 0; i < base->groups.count; i++) { user_info_dc->sids[user_info_dc->num_sids] = *base->domain_sid; if (!sid_append_rid(&user_info_dc->sids[user_info_dc->num_sids], base->groups.rids[i].rid)) { return NT_STATUS_INVALID_PARAMETER; } user_info_dc->num_sids++; } /* Copy 'other' sids. We need to do sid filtering here to prevent possible elevation of privileges. See: http://www.microsoft.com/windows2000/techinfo/administration/security/sidfilter.asp */ if (validation_level == 3) { struct dom_sid *dgrps = user_info_dc->sids; size_t sidcount; /* The IDL layer would be a better place to check this, but to * guard the integer addition below, we double-check */ if (validation->sam3->sidcount > 65535) { return NT_STATUS_INVALID_PARAMETER; } sidcount = user_info_dc->num_sids + validation->sam3->sidcount; if (validation->sam3->sidcount > 0) { dgrps = talloc_realloc(user_info_dc, dgrps, struct dom_sid, sidcount); NT_STATUS_HAVE_NO_MEMORY(dgrps); for (i = 0; i < validation->sam3->sidcount; i++) { if (validation->sam3->sids[i].sid) { dgrps[user_info_dc->num_sids] = *validation->sam3->sids[i].sid; user_info_dc->num_sids++; } } } user_info_dc->sids = dgrps; /* Where are the 'global' sids?... */ } status = make_user_info_SamBaseInfo(user_info_dc, account_name, base, authenticated, &user_info_dc->info); if (!NT_STATUS_IS_OK(status)) { return status; } /* ensure we are never given NULL session keys */ if (all_zero(base->key.key, sizeof(base->key.key))) { user_info_dc->user_session_key = data_blob(NULL, 0); } else { user_info_dc->user_session_key = data_blob_talloc(user_info_dc, base->key.key, sizeof(base->key.key)); NT_STATUS_HAVE_NO_MEMORY(user_info_dc->user_session_key.data); } if (all_zero(base->LMSessKey.key, sizeof(base->LMSessKey.key))) { user_info_dc->lm_session_key = data_blob(NULL, 0); } else { user_info_dc->lm_session_key = data_blob_talloc(user_info_dc, base->LMSessKey.key, sizeof(base->LMSessKey.key)); NT_STATUS_HAVE_NO_MEMORY(user_info_dc->lm_session_key.data); } *_user_info_dc = user_info_dc; return NT_STATUS_OK; } /** * Make a user_info_dc struct from the PAC_LOGON_INFO supplied in the krb5 logon */ NTSTATUS make_user_info_dc_pac(TALLOC_CTX *mem_ctx, struct PAC_LOGON_INFO *pac_logon_info, struct auth_user_info_dc **_user_info_dc) { uint32_t i; NTSTATUS nt_status; union netr_Validation validation; struct auth_user_info_dc *user_info_dc; validation.sam3 = &pac_logon_info->info3; nt_status = make_user_info_dc_netlogon_validation(mem_ctx, "", 3, &validation, true, /* This user was authenticated */ &user_info_dc); if (!NT_STATUS_IS_OK(nt_status)) { return nt_status; } if (pac_logon_info->res_groups.count > 0) { size_t sidcount; /* The IDL layer would be a better place to check this, but to * guard the integer addition below, we double-check */ if (pac_logon_info->res_groups.count > 65535) { talloc_free(user_info_dc); return NT_STATUS_INVALID_PARAMETER; } /* Here is where we should check the list of trusted domains, and verify that the SID matches. */ if (!pac_logon_info->res_group_dom_sid) { DEBUG(0, ("Cannot operate on a PAC without a resource domain SID")); return NT_STATUS_INVALID_PARAMETER; } sidcount = user_info_dc->num_sids + pac_logon_info->res_groups.count; user_info_dc->sids = talloc_realloc(user_info_dc, user_info_dc->sids, struct dom_sid, sidcount); NT_STATUS_HAVE_NO_MEMORY_AND_FREE(user_info_dc->sids, user_info_dc); for (i = 0; pac_logon_info->res_group_dom_sid && i < pac_logon_info->res_groups.count; i++) { user_info_dc->sids[user_info_dc->num_sids] = *pac_logon_info->res_group_dom_sid; if (!sid_append_rid(&user_info_dc->sids[user_info_dc->num_sids], pac_logon_info->res_groups.rids[i].rid)) { return NT_STATUS_INVALID_PARAMETER; } user_info_dc->num_sids++; } } *_user_info_dc = user_info_dc; return NT_STATUS_OK; }