From 003b3b878762a89c6626a3d5a2a48eb7bb2f4cca Mon Sep 17 00:00:00 2001 From: Jim McDonough Date: Mon, 29 Jun 2009 09:42:35 -0400 Subject: [PATCH] Don't require "Modify property" perms to unjoin (bug #6481) "net ads leave" stopped working when "modify properties" permissions were not granted (meaning you had to be allowed to disable the account that you were about to delete). Libnetapi should not delete machine accounts, as this does not happen on win32. The WKSSVC_JOIN_FLAGS_ACCOUNT_DELETE flag really means "disable" (both in practice and docs). However, to keep the functionality in "net ads leave", we will still try to do the delete. If this fails, we try to do the disable. Additionally, it is possible in windows to not disable or delete the account, but just tell the local machine that it is no longer in the account. libnet can now do this as well. Don't use ads realm name for non-ads case. #6481 Also check that the connection to ads worked. --- source/lib/netapi/joindomain.c | 1 + source/libnet/libnet_join.c | 61 +++++++++++++++++++++---------- source/librpc/gen_ndr/libnet_join.h | 1 + source/librpc/gen_ndr/ndr_libnet_join.c | 1 + source/librpc/idl/libnet_join.idl | 1 + source/utils/net_ads.c | 11 +++++- 6 files changed, 55 insertions(+), 21 deletions(-) diff --git a/source/lib/netapi/joindomain.c b/source/lib/netapi/joindomain.c index d15e2e7..93c2eed 100644 --- a/source/lib/netapi/joindomain.c +++ b/source/lib/netapi/joindomain.c @@ -207,6 +207,7 @@ WERROR NetUnjoinDomain_l(struct libnetapi_ctx *mem_ctx, u->in.domain_name = domain; u->in.unjoin_flags = r->in.unjoin_flags; + u->in.delete_machine_account = false; u->in.modify_config = true; u->in.debug = true; diff --git a/source/libnet/libnet_join.c b/source/libnet/libnet_join.c index 1016e9c..88b6763 100644 --- a/source/libnet/libnet_join.c +++ b/source/libnet/libnet_join.c @@ -1923,6 +1923,12 @@ static WERROR libnet_DomainUnjoin(TALLOC_CTX *mem_ctx, W_ERROR_HAVE_NO_MEMORY(r->in.domain_sid); } + if (!(r->in.unjoin_flags & WKSSVC_JOIN_FLAGS_ACCOUNT_DELETE) && + !r->in.delete_machine_account) { + libnet_join_unjoindomain_remove_secrets(mem_ctx, r); + return WERR_OK; + } + if (!r->in.dc_name) { struct netr_DsRGetDCNameInfo *info; const char *dc; @@ -1948,38 +1954,55 @@ static WERROR libnet_DomainUnjoin(TALLOC_CTX *mem_ctx, W_ERROR_HAVE_NO_MEMORY(r->in.dc_name); } - status = libnet_join_unjoindomain_rpc(mem_ctx, r); - if (!NT_STATUS_IS_OK(status)) { - libnet_unjoin_set_error_string(mem_ctx, r, - "failed to disable machine account via rpc: %s", - get_friendly_nt_error_msg(status)); - if (NT_STATUS_EQUAL(status, NT_STATUS_NO_SUCH_USER)) { - return WERR_SETUP_NOT_JOINED; - } - return ntstatus_to_werror(status); - } - - r->out.disabled_machine_account = true; - #ifdef WITH_ADS - if (r->in.unjoin_flags & WKSSVC_JOIN_FLAGS_ACCOUNT_DELETE) { + /* for net ads leave, try to delete the account. If it works, + no sense in disabling. If it fails, we can still try to + disable it. jmcd */ + + if (r->in.delete_machine_account) { ADS_STATUS ads_status; - libnet_unjoin_connect_ads(mem_ctx, r); - ads_status = libnet_unjoin_remove_machine_acct(mem_ctx, r); + ads_status = libnet_unjoin_connect_ads(mem_ctx, r); + if (ADS_ERR_OK(ads_status)) { + /* dirty hack */ + r->out.dns_domain_name = + talloc_strdup(mem_ctx, + r->in.ads->server.realm); + ads_status = + libnet_unjoin_remove_machine_acct(mem_ctx, r); + } if (!ADS_ERR_OK(ads_status)) { libnet_unjoin_set_error_string(mem_ctx, r, "failed to remove machine account from AD: %s", ads_errstr(ads_status)); } else { r->out.deleted_machine_account = true; - /* dirty hack */ - r->out.dns_domain_name = talloc_strdup(mem_ctx, - r->in.ads->server.realm); W_ERROR_HAVE_NO_MEMORY(r->out.dns_domain_name); + libnet_join_unjoindomain_remove_secrets(mem_ctx, r); + return WERR_OK; } } #endif /* WITH_ADS */ + /* The WKSSVC_JOIN_FLAGS_ACCOUNT_DELETE flag really means + "disable". */ + if (r->in.unjoin_flags & WKSSVC_JOIN_FLAGS_ACCOUNT_DELETE) { + status = libnet_join_unjoindomain_rpc(mem_ctx, r); + if (!NT_STATUS_IS_OK(status)) { + libnet_unjoin_set_error_string(mem_ctx, r, + "failed to disable machine account via rpc: %s", + get_friendly_nt_error_msg(status)); + if (NT_STATUS_EQUAL(status, NT_STATUS_NO_SUCH_USER)) { + return WERR_SETUP_NOT_JOINED; + } + return ntstatus_to_werror(status); + } + + r->out.disabled_machine_account = true; + } + + /* If disable succeeded or was not requested at all, we + should be getting rid of our end of things */ + libnet_join_unjoindomain_remove_secrets(mem_ctx, r); return WERR_OK; diff --git a/source/librpc/gen_ndr/libnet_join.h b/source/librpc/gen_ndr/libnet_join.h index ed49062..9daf3cd 100644 --- a/source/librpc/gen_ndr/libnet_join.h +++ b/source/librpc/gen_ndr/libnet_join.h @@ -58,6 +58,7 @@ struct libnet_UnjoinCtx { const char * admin_password; const char * machine_password; uint32_t unjoin_flags; + uint8_t delete_machine_account; uint8_t modify_config; struct dom_sid *domain_sid;/* [ref] */ struct ads_struct *ads;/* [ref] */ diff --git a/source/librpc/gen_ndr/ndr_libnet_join.c b/source/librpc/gen_ndr/ndr_libnet_join.c index 79fcd16..ba31ea6 100644 --- a/source/librpc/gen_ndr/ndr_libnet_join.c +++ b/source/librpc/gen_ndr/ndr_libnet_join.c @@ -89,6 +89,7 @@ _PUBLIC_ void ndr_print_libnet_UnjoinCtx(struct ndr_print *ndr, const char *name ndr_print_ptr(ndr, "machine_password", r->in.machine_password); #endif ndr_print_wkssvc_joinflags(ndr, "unjoin_flags", r->in.unjoin_flags); + ndr_print_uint8(ndr, "delete_machine_account", r->in.delete_machine_account); ndr_print_uint8(ndr, "modify_config", r->in.modify_config); ndr_print_ptr(ndr, "domain_sid", r->in.domain_sid); ndr->depth++; diff --git a/source/librpc/idl/libnet_join.idl b/source/librpc/idl/libnet_join.idl index c600ea0..80429dc 100644 --- a/source/librpc/idl/libnet_join.idl +++ b/source/librpc/idl/libnet_join.idl @@ -53,6 +53,7 @@ interface libnetjoin [in] string admin_password, [in] string machine_password, [in] wkssvc_joinflags unjoin_flags, + [in] boolean8 delete_machine_account, [in] boolean8 modify_config, [in] dom_sid *domain_sid, [in] ads_struct *ads, diff --git a/source/utils/net_ads.c b/source/utils/net_ads.c index d0f7430..96ca486 100644 --- a/source/utils/net_ads.c +++ b/source/utils/net_ads.c @@ -901,8 +901,12 @@ static int net_ads_leave(struct net_context *c, int argc, const char **argv) r->in.admin_account = c->opt_user_name; r->in.admin_password = net_prompt_pass(c, c->opt_user_name); r->in.modify_config = lp_config_backend_is_registry(); + + /* Try to delete it, but if that fails, disable it. The + WKSSVC_JOIN_FLAGS_ACCOUNT_DELETE really means "disable */ r->in.unjoin_flags = WKSSVC_JOIN_FLAGS_JOIN_TYPE | WKSSVC_JOIN_FLAGS_ACCOUNT_DELETE; + r->in.delete_machine_account = true; werr = libnet_Unjoin(ctx, r); if (!W_ERROR_IS_OK(werr)) { @@ -912,7 +916,7 @@ static int net_ads_leave(struct net_context *c, int argc, const char **argv) goto done; } - if (W_ERROR_IS_OK(werr)) { + if (r->out.deleted_machine_account) { d_printf("Deleted account for '%s' in realm '%s'\n", r->in.machine_name, r->out.dns_domain_name); goto done; @@ -926,7 +930,10 @@ static int net_ads_leave(struct net_context *c, int argc, const char **argv) goto done; } - d_fprintf(stderr, "Failed to disable machine account for '%s' in realm '%s'\n", + /* Based on what we requseted, we shouldn't get here, but if + we did, it means the secrets were removed, and therefore + we have left the domain */ + d_fprintf(stderr, "Machine '%s' Left domain '%s'\n", r->in.machine_name, r->out.dns_domain_name); done: -- 1.6.3.2