diff options
Diffstat (limited to 'auth/auth_sam_reply.c')
| -rw-r--r-- | auth/auth_sam_reply.c | 642 |
1 files changed, 642 insertions, 0 deletions
diff --git a/auth/auth_sam_reply.c b/auth/auth_sam_reply.c new file mode 100644 index 0000000..173a513 --- /dev/null +++ b/auth/auth_sam_reply.c @@ -0,0 +1,642 @@ +/* + 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" + +static NTSTATUS auth_convert_user_info_dc_sambaseinfo(TALLOC_CTX *mem_ctx, + const struct auth_user_info_dc *user_info_dc, + struct netr_SamBaseInfo *sam) +{ + NTSTATUS status; + const struct auth_user_info *info; + + ZERO_STRUCTP(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; + +#define _COPY_STRING_TALLOC(src_name, dst_name) do { \ + if (info->src_name != NULL) {\ + sam->dst_name.string = talloc_strdup(mem_ctx, info->src_name); \ + if (sam->dst_name.string == NULL) { \ + return NT_STATUS_NO_MEMORY; \ + } \ + } \ +} while(0) + _COPY_STRING_TALLOC(account_name, account_name); + _COPY_STRING_TALLOC(full_name, full_name); + _COPY_STRING_TALLOC(logon_script, logon_script); + _COPY_STRING_TALLOC(profile_path, profile_path); + _COPY_STRING_TALLOC(home_directory, home_directory); + _COPY_STRING_TALLOC(home_drive, home_drive); + _COPY_STRING_TALLOC(logon_server, logon_server); + _COPY_STRING_TALLOC(domain_name, logon_domain); +#undef _COPY_STRING_TALLOC + + 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 > PRIMARY_GROUP_SID_INDEX) { + size_t i; + sam->groups.rids = talloc_array(mem_ctx, struct samr_RidWithAttribute, + user_info_dc->num_sids); + + if (sam->groups.rids == NULL) + return NT_STATUS_NO_MEMORY; + + for (i=PRIMARY_GROUP_SID_INDEX; 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->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)); + } + + return NT_STATUS_OK; +} + +/* Note that the validity of the _sam6 structure is only as long as + * the user_info_dc it was generated from */ +NTSTATUS auth_convert_user_info_dc_saminfo6(TALLOC_CTX *mem_ctx, + const struct auth_user_info_dc *user_info_dc, + struct netr_SamInfo6 **_sam6) +{ + NTSTATUS status; + struct netr_SamInfo6 *sam6 = NULL; + size_t i; + + sam6 = talloc_zero(mem_ctx, struct netr_SamInfo6); + if (sam6 == NULL) { + return NT_STATUS_NO_MEMORY; + } + + status = auth_convert_user_info_dc_sambaseinfo(sam6, + user_info_dc, + &sam6->base); + if (!NT_STATUS_IS_OK(status)) { + TALLOC_FREE(sam6); + return status; + } + + sam6->sids = talloc_array(sam6, struct netr_SidAttr, + user_info_dc->num_sids); + if (sam6->sids == NULL) { + TALLOC_FREE(sam6); + return NT_STATUS_NO_MEMORY; + } + + /* 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(sam6->base.domain_sid, &user_info_dc->sids[i])) { + continue; + } + sam6->sids[sam6->sidcount].sid = dom_sid_dup(sam6->sids, &user_info_dc->sids[i]); + if (sam6->sids[sam6->sidcount].sid == NULL) { + TALLOC_FREE(sam6); + return NT_STATUS_NO_MEMORY; + } + sam6->sids[sam6->sidcount].attributes = + SE_GROUP_MANDATORY | SE_GROUP_ENABLED_BY_DEFAULT | SE_GROUP_ENABLED; + sam6->sidcount += 1; + } + if (sam6->sidcount) { + sam6->base.user_flags |= NETLOGON_EXTRA_SIDS; + } else { + sam6->sids = NULL; + } + + if (user_info_dc->info->dns_domain_name != NULL) { + sam6->dns_domainname.string = talloc_strdup(sam6, + user_info_dc->info->dns_domain_name); + if (sam6->dns_domainname.string == NULL) { + TALLOC_FREE(sam6); + return NT_STATUS_NO_MEMORY; + } + } + + if (user_info_dc->info->user_principal_name != NULL) { + sam6->principal_name.string = talloc_strdup(sam6, + user_info_dc->info->user_principal_name); + if (sam6->principal_name.string == NULL) { + TALLOC_FREE(sam6); + return NT_STATUS_NO_MEMORY; + } + } + + *_sam6 = sam6; + return NT_STATUS_OK; +} + +/* Note that the validity of the _sam2 structure is only as long as + * the user_info_dc it was generated from */ +NTSTATUS auth_convert_user_info_dc_saminfo2(TALLOC_CTX *mem_ctx, + const struct auth_user_info_dc *user_info_dc, + struct netr_SamInfo2 **_sam2) +{ + NTSTATUS status; + struct netr_SamInfo6 *sam6 = NULL; + struct netr_SamInfo2 *sam2 = NULL; + + sam2 = talloc_zero(mem_ctx, struct netr_SamInfo2); + if (sam2 == NULL) { + return NT_STATUS_NO_MEMORY; + } + + status = auth_convert_user_info_dc_saminfo6(sam2, user_info_dc, &sam6); + if (!NT_STATUS_IS_OK(status)) { + TALLOC_FREE(sam2); + return status; + } + sam2->base = sam6->base; + + *_sam2 = sam2; + 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, + const struct auth_user_info_dc *user_info_dc, + struct netr_SamInfo3 **_sam3) +{ + NTSTATUS status; + struct netr_SamInfo6 *sam6 = NULL; + struct netr_SamInfo3 *sam3 = NULL; + + sam3 = talloc_zero(mem_ctx, struct netr_SamInfo3); + if (sam3 == NULL) { + return NT_STATUS_NO_MEMORY; + } + + status = auth_convert_user_info_dc_saminfo6(sam3, user_info_dc, &sam6); + if (!NT_STATUS_IS_OK(status)) { + TALLOC_FREE(sam3); + return status; + } + sam3->base = sam6->base; + sam3->sidcount = sam6->sidcount; + sam3->sids = sam6->sids; + + *_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, + const 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; +} + +struct auth_user_info *auth_user_info_copy(TALLOC_CTX *mem_ctx, + const struct auth_user_info *src) +{ + struct auth_user_info *dst = NULL; + + dst = talloc_zero(mem_ctx, struct auth_user_info); + if (dst == NULL) { + return NULL; + } + + *dst = *src; +#define _COPY_STRING(_mem, _str) do { \ + if ((_str) != NULL) { \ + (_str) = talloc_strdup((_mem), (_str)); \ + if ((_str) == NULL) { \ + TALLOC_FREE(dst); \ + return NULL; \ + } \ + } \ +} while(0) + _COPY_STRING(dst, dst->account_name); + _COPY_STRING(dst, dst->user_principal_name); + _COPY_STRING(dst, dst->domain_name); + _COPY_STRING(dst, dst->dns_domain_name); + _COPY_STRING(dst, dst->full_name); + _COPY_STRING(dst, dst->logon_script); + _COPY_STRING(dst, dst->profile_path); + _COPY_STRING(dst, dst->home_directory); + _COPY_STRING(dst, dst->home_drive); + _COPY_STRING(dst, dst->logon_server); +#undef _COPY_STRING + + return dst; +} + +/** + * 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, + const union netr_Validation *validation, + bool authenticated, + struct auth_user_info_dc **_user_info_dc) +{ + NTSTATUS status; + struct auth_user_info_dc *user_info_dc = NULL; + const struct netr_SamBaseInfo *base = NULL; + uint32_t sidcount = 0; + const struct netr_SidAttr *sids = NULL; + const char *dns_domainname = NULL; + const char *principal = 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; + sidcount = validation->sam3->sidcount; + sids = validation->sam3->sids; + break; + case 6: + if (!validation || !validation->sam6) { + return NT_STATUS_INVALID_PARAMETER; + } + base = &validation->sam6->base; + sidcount = validation->sam6->sidcount; + sids = validation->sam6->sids; + dns_domainname = validation->sam6->dns_domainname.string; + principal = validation->sam6->principal_name.string; + break; + default: + return NT_STATUS_INVALID_LEVEL; + } + + user_info_dc = talloc_zero(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++) { + /* Skip primary group, already added above */ + if (base->groups.rids[i].rid == base->primary_gid) { + continue; + } + 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 + */ + + /* + * The IDL layer would be a better place to check this, but to + * guard the integer addition below, we double-check + */ + if (sidcount > UINT16_MAX) { + return NT_STATUS_INVALID_PARAMETER; + } + + if (sidcount > 0) { + struct dom_sid *dgrps = user_info_dc->sids; + size_t dgrps_count; + + dgrps_count = user_info_dc->num_sids + sidcount; + dgrps = talloc_realloc(user_info_dc, dgrps, struct dom_sid, + dgrps_count); + if (dgrps == NULL) { + return NT_STATUS_NO_MEMORY; + } + + for (i = 0; i < sidcount; i++) { + if (sids[i].sid) { + dgrps[user_info_dc->num_sids] = *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; + } + + if (dns_domainname != NULL) { + user_info_dc->info->dns_domain_name = talloc_strdup(user_info_dc->info, + dns_domainname); + if (user_info_dc->info->dns_domain_name == NULL) { + return NT_STATUS_NO_MEMORY; + } + } + + if (principal != NULL) { + user_info_dc->info->user_principal_name = talloc_strdup(user_info_dc->info, + principal); + if (user_info_dc->info->user_principal_name == NULL) { + return NT_STATUS_NO_MEMORY; + } + } + + /* 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, + const struct PAC_LOGON_INFO *pac_logon_info, + const struct PAC_UPN_DNS_INFO *pac_upn_dns_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; + const struct PAC_DOMAIN_GROUP_MEMBERSHIP *rg = NULL; + size_t sidcount; + + rg = &pac_logon_info->resource_groups; + + validation.sam3 = discard_const_p(struct netr_SamInfo3, &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->info3.base.user_flags & NETLOGON_RESOURCE_GROUPS) { + rg = &pac_logon_info->resource_groups; + } + + if (rg == NULL) { + *_user_info_dc = user_info_dc; + return NT_STATUS_OK; + } + + if (rg->groups.count > 0) { + /* The IDL layer would be a better place to check this, but to + * guard the integer addition below, we double-check */ + if (rg->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 (rg->domain_sid == NULL) { + talloc_free(user_info_dc); + DEBUG(0, ("Cannot operate on a PAC without a resource domain SID")); + return NT_STATUS_INVALID_PARAMETER; + } + + sidcount = user_info_dc->num_sids + rg->groups.count; + user_info_dc->sids + = talloc_realloc(user_info_dc, user_info_dc->sids, struct dom_sid, sidcount); + if (user_info_dc->sids == NULL) { + TALLOC_FREE(user_info_dc); + return NT_STATUS_NO_MEMORY; + } + + for (i = 0; i < rg->groups.count; i++) { + bool ok; + + user_info_dc->sids[user_info_dc->num_sids] = *rg->domain_sid; + ok = sid_append_rid(&user_info_dc->sids[user_info_dc->num_sids], + rg->groups.rids[i].rid); + if (!ok) { + return NT_STATUS_INVALID_PARAMETER; + } + user_info_dc->num_sids++; + } + } + + if (pac_upn_dns_info != NULL) { + if (pac_upn_dns_info->upn_name != NULL) { + user_info_dc->info->user_principal_name = + talloc_strdup(user_info_dc->info, + pac_upn_dns_info->upn_name); + if (user_info_dc->info->user_principal_name == NULL) { + return NT_STATUS_NO_MEMORY; + } + } + + user_info_dc->info->dns_domain_name = + talloc_strdup(user_info_dc->info, + pac_upn_dns_info->dns_domain_name); + if (user_info_dc->info->dns_domain_name == NULL) { + return NT_STATUS_NO_MEMORY; + } + + if (pac_upn_dns_info->flags & PAC_UPN_DNS_FLAG_CONSTRUCTED) { + user_info_dc->info->user_principal_constructed = true; + } + } + + *_user_info_dc = user_info_dc; + return NT_STATUS_OK; +} |