diff options
Diffstat (limited to 'source4/libcli/finddcs_nbt.c')
| -rw-r--r-- | source4/libcli/finddcs_nbt.c | 311 |
1 files changed, 0 insertions, 311 deletions
diff --git a/source4/libcli/finddcs_nbt.c b/source4/libcli/finddcs_nbt.c deleted file mode 100644 index 6a5d1fd8563..00000000000 --- a/source4/libcli/finddcs_nbt.c +++ /dev/null @@ -1,311 +0,0 @@ -/* - Unix SMB/CIFS implementation. - - a composite API for finding a DC and its name - - Copyright (C) Volker Lendecke 2005 - Copyright (C) Andrew Bartlett <abartlet@samba.org> 2006 - - 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 "include/includes.h" -#include <tevent.h> -#include "lib/messaging/irpc.h" -#include "librpc/gen_ndr/ndr_irpc_c.h" -#include "libcli/composite/composite.h" -#include "libcli/libcli.h" -#include "libcli/resolve/resolve.h" -#include "lib/util/tevent_ntstatus.h" -#include "libcli/finddc.h" - -struct finddcs_nbt_state { - struct tevent_context *ev; - struct tevent_req *req; - struct imessaging_context *msg_ctx; - - const char *my_netbios_name; - const char *domain_name; - struct dom_sid *domain_sid; - - struct nbtd_getdcname r; - struct nbt_name_status node_status; - - int num_dcs; - struct nbt_dc_name *dcs; - uint16_t nbt_port; -}; - -static void finddcs_nbt_name_resolved(struct composite_context *ctx); -static void finddcs_nbt_getdc_replied(struct tevent_req *subreq); -static void fallback_node_status(struct finddcs_nbt_state *state); -static void fallback_node_status_replied(struct nbt_name_request *name_req); - -/* - * Setup and send off the a normal name resolution for the target name. - * - * The domain_sid parameter is optional, and is used in the subsequent getdc request. - * - * This will try a GetDC request, but this may not work. It will try - * a node status as a fallback, then return no name (but still include - * the IP) - */ - -struct tevent_req *finddcs_nbt_send(TALLOC_CTX *mem_ctx, - const char *my_netbios_name, - uint16_t nbt_port, - const char *domain_name, - int name_type, - struct dom_sid *domain_sid, - struct resolve_context *resolve_ctx, - struct tevent_context *event_ctx, - struct imessaging_context *msg_ctx) -{ - struct finddcs_nbt_state *state; - struct nbt_name name; - struct tevent_req *req; - struct composite_context *creq; - - req = tevent_req_create(mem_ctx, &state, struct finddcs_nbt_state); - if (req == NULL) { - return NULL; - } - - state->req = req; - state->ev = event_ctx; - state->nbt_port = nbt_port; - state->my_netbios_name = talloc_strdup(state, my_netbios_name); - if (tevent_req_nomem(state->my_netbios_name, req)) { - return tevent_req_post(req, event_ctx); - } - state->domain_name = talloc_strdup(state, domain_name); - if (tevent_req_nomem(state->domain_name, req)) { - return tevent_req_post(req, event_ctx); - } - - if (domain_sid) { - state->domain_sid = talloc_reference(state, domain_sid); - if (tevent_req_nomem(state->domain_sid, req)) { - return tevent_req_post(req, event_ctx); - } - } else { - state->domain_sid = NULL; - } - - state->msg_ctx = msg_ctx; - - make_nbt_name(&name, state->domain_name, name_type); - creq = resolve_name_send(resolve_ctx, state, &name, event_ctx); - if (tevent_req_nomem(creq, req)) { - return tevent_req_post(req, event_ctx); - } - creq->async.fn = finddcs_nbt_name_resolved; - creq->async.private_data = state; - - return req; -} - -/* Having got an name query answer, fire off a GetDC request, so we - * can find the target's all-important name. (Kerberos and some - * netlogon operations are quite picky about names) - * - * The name is a courtesy, if we don't find it, don't completely fail. - * - * However, if the nbt server is down, fall back to a node status - * request - */ -static void finddcs_nbt_name_resolved(struct composite_context *ctx) -{ - struct finddcs_nbt_state *state = - talloc_get_type(ctx->async.private_data, struct finddcs_nbt_state); - struct tevent_req *subreq; - struct dcerpc_binding_handle *irpc_handle; - const char *address; - NTSTATUS status; - - status = resolve_name_recv(ctx, state, &address); - if (tevent_req_nterror(state->req, status)) { - return; - } - - /* TODO: This should try and find all the DCs, and give the - * caller them in the order they responded */ - - state->num_dcs = 1; - state->dcs = talloc_array(state, struct nbt_dc_name, state->num_dcs); - if (tevent_req_nomem(state->dcs, state->req)) { - return; - } - - state->dcs[0].address = talloc_steal(state->dcs, address); - - /* Try and find the nbt server. Fallback to a node status - * request if we can't make this happen The nbt server just - * might not be running, or we may not have a messaging - * context (not root etc) */ - if (!state->msg_ctx) { - fallback_node_status(state); - return; - } - - irpc_handle = irpc_binding_handle_by_name(state, state->msg_ctx, - "nbt_server", &ndr_table_irpc); - if (irpc_handle == NULL) { - fallback_node_status(state); - return; - } - - state->r.in.domainname = state->domain_name; - state->r.in.ip_address = state->dcs[0].address; - state->r.in.my_computername = state->my_netbios_name; - state->r.in.my_accountname = talloc_asprintf(state, "%s$", state->my_netbios_name); - if (tevent_req_nomem(state->r.in.my_accountname, state->req)) { - return; - } - state->r.in.account_control = ACB_WSTRUST; - state->r.in.domain_sid = state->domain_sid; - if (state->r.in.domain_sid == NULL) { - state->r.in.domain_sid = talloc_zero(state, struct dom_sid); - } - - subreq = dcerpc_nbtd_getdcname_r_send(state, state->ev, - irpc_handle, &state->r); - if (tevent_req_nomem(subreq, state->req)) { - return; - } - tevent_req_set_callback(subreq, finddcs_nbt_getdc_replied, state); -} - -/* Called when the GetDC request returns */ -static void finddcs_nbt_getdc_replied(struct tevent_req *subreq) -{ - struct finddcs_nbt_state *state = - tevent_req_callback_data(subreq, - struct finddcs_nbt_state); - NTSTATUS status; - - status = dcerpc_nbtd_getdcname_r_recv(subreq, state); - TALLOC_FREE(subreq); - if (!NT_STATUS_IS_OK(status)) { - fallback_node_status(state); - return; - } - - state->dcs[0].name = talloc_steal(state->dcs, state->r.out.dcname); - tevent_req_done(state->req); -} - -/* The GetDC request might not be available (such as occours when the - * NBT server is down). Fallback to a node status. It is the best - * hope we have... */ -static void fallback_node_status(struct finddcs_nbt_state *state) -{ - struct nbt_name_socket *nbtsock; - struct nbt_name_request *name_req; - - state->node_status.in.name.name = "*"; - state->node_status.in.name.type = NBT_NAME_CLIENT; - state->node_status.in.name.scope = NULL; - state->node_status.in.dest_addr = state->dcs[0].address; - state->node_status.in.dest_port = state->nbt_port; - state->node_status.in.timeout = 1; - state->node_status.in.retries = 2; - - nbtsock = nbt_name_socket_init(state, state->ev); - if (tevent_req_nomem(nbtsock, state->req)) { - return; - } - - name_req = nbt_name_status_send(nbtsock, &state->node_status); - if (tevent_req_nomem(name_req, state->req)) { - return; - } - - name_req->async.fn = fallback_node_status_replied; - name_req->async.private_data = state; -} - -/* We have a node status reply (or perhaps a timeout) */ -static void fallback_node_status_replied(struct nbt_name_request *name_req) -{ - int i; - struct finddcs_nbt_state *state = talloc_get_type(name_req->async.private_data, struct finddcs_nbt_state); - NTSTATUS status; - - status = nbt_name_status_recv(name_req, state, &state->node_status); - if (tevent_req_nterror(state->req, status)) { - return; - } - - for (i=0; i < state->node_status.out.status.num_names; i++) { - int j; - if (state->node_status.out.status.names[i].type == NBT_NAME_SERVER) { - char *name = talloc_strndup(state->dcs, state->node_status.out.status.names[0].name, 15); - /* Strip space padding */ - if (name) { - j = MIN(strlen(name), 15); - for (; j > 0 && name[j - 1] == ' '; j--) { - name[j - 1] = '\0'; - } - } - state->dcs[0].name = name; - tevent_req_done(state->req); - return; - } - } - tevent_req_nterror(state->req, NT_STATUS_NO_LOGON_SERVERS); -} - -NTSTATUS finddcs_nbt_recv(struct tevent_req *req, TALLOC_CTX *mem_ctx, - int *num_dcs, struct nbt_dc_name **dcs) -{ - struct finddcs_nbt_state *state = tevent_req_data(req, struct finddcs_nbt_state); - bool ok; - NTSTATUS status; - - ok = tevent_req_poll(req, state->ev); - if (!ok) { - talloc_free(req); - return NT_STATUS_INTERNAL_ERROR; - } - status = tevent_req_simple_recv_ntstatus(req); - if (NT_STATUS_IS_OK(status)) { - *num_dcs = state->num_dcs; - *dcs = talloc_steal(mem_ctx, state->dcs); - } - return status; -} - -NTSTATUS finddcs_nbt(TALLOC_CTX *mem_ctx, - const char *my_netbios_name, - uint16_t nbt_port, - const char *domain_name, int name_type, - struct dom_sid *domain_sid, - struct resolve_context *resolve_ctx, - struct tevent_context *event_ctx, - struct imessaging_context *msg_ctx, - int *num_dcs, struct nbt_dc_name **dcs) -{ - NTSTATUS status; - struct tevent_req *req = finddcs_nbt_send(mem_ctx, - my_netbios_name, - nbt_port, - domain_name, name_type, - domain_sid, - resolve_ctx, - event_ctx, msg_ctx); - status = finddcs_nbt_recv(req, mem_ctx, num_dcs, dcs); - talloc_free(req); - return status; -} |