diff options
Diffstat (limited to 'source4/libcli/wrepl/winsrepl.c')
| -rw-r--r-- | source4/libcli/wrepl/winsrepl.c | 1172 |
1 files changed, 1172 insertions, 0 deletions
diff --git a/source4/libcli/wrepl/winsrepl.c b/source4/libcli/wrepl/winsrepl.c new file mode 100644 index 0000000..eab7430 --- /dev/null +++ b/source4/libcli/wrepl/winsrepl.c @@ -0,0 +1,1172 @@ +/* + Unix SMB/CIFS implementation. + + low level WINS replication client code + + Copyright (C) Andrew Tridgell 2005 + Copyright (C) Stefan Metzmacher 2005-2010 + + 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 "lib/events/events.h" +#include "../lib/util/dlinklist.h" +#include "libcli/wrepl/winsrepl.h" +#include "librpc/gen_ndr/ndr_winsrepl.h" +#include "lib/stream/packet.h" +#include "system/network.h" +#include "lib/socket/netif.h" +#include "param/param.h" +#include "lib/util/tevent_ntstatus.h" +#include "lib/tsocket/tsocket.h" +#include "libcli/util/tstream.h" + +/* + main context structure for the wins replication client library +*/ +struct wrepl_socket { + struct { + struct tevent_context *ctx; + } event; + + /* the default timeout for requests, 0 means no timeout */ +#define WREPL_SOCKET_REQUEST_TIMEOUT (60) + uint32_t request_timeout; + + struct tevent_queue *request_queue; + + struct tstream_context *stream; +}; + +bool wrepl_socket_is_connected(struct wrepl_socket *wrepl_sock) +{ + if (!wrepl_sock) { + return false; + } + + if (!wrepl_sock->stream) { + return false; + } + + return true; +} + +/* + initialise a wrepl_socket. The event_ctx is optional, if provided then + operations will use that event context +*/ +struct wrepl_socket *wrepl_socket_init(TALLOC_CTX *mem_ctx, + struct tevent_context *event_ctx) +{ + struct wrepl_socket *wrepl_socket; + + wrepl_socket = talloc_zero(mem_ctx, struct wrepl_socket); + if (!wrepl_socket) { + return NULL; + } + + wrepl_socket->event.ctx = event_ctx; + if (!wrepl_socket->event.ctx) { + goto failed; + } + + wrepl_socket->request_queue = tevent_queue_create(wrepl_socket, + "wrepl request queue"); + if (wrepl_socket->request_queue == NULL) { + goto failed; + } + + wrepl_socket->request_timeout = WREPL_SOCKET_REQUEST_TIMEOUT; + + return wrepl_socket; + +failed: + talloc_free(wrepl_socket); + return NULL; +} + +/* + initialise a wrepl_socket from an already existing connection +*/ +NTSTATUS wrepl_socket_donate_stream(struct wrepl_socket *wrepl_socket, + struct tstream_context **stream) +{ + if (wrepl_socket->stream) { + return NT_STATUS_CONNECTION_ACTIVE; + } + + wrepl_socket->stream = talloc_move(wrepl_socket, stream); + return NT_STATUS_OK; +} + +/* + initialise a wrepl_socket from an already existing connection +*/ +NTSTATUS wrepl_socket_split_stream(struct wrepl_socket *wrepl_socket, + TALLOC_CTX *mem_ctx, + struct tstream_context **stream) +{ + size_t num_requests; + + if (!wrepl_socket->stream) { + return NT_STATUS_CONNECTION_INVALID; + } + + num_requests = tevent_queue_length(wrepl_socket->request_queue); + if (num_requests > 0) { + return NT_STATUS_CONNECTION_IN_USE; + } + + *stream = talloc_move(wrepl_socket, &wrepl_socket->stream); + return NT_STATUS_OK; +} + +const char *wrepl_best_ip(struct loadparm_context *lp_ctx, const char *peer_ip) +{ + struct interface *ifaces; + load_interface_list(lp_ctx, lp_ctx, &ifaces); + return iface_list_best_ip(ifaces, peer_ip); +} + +struct wrepl_connect_state { + struct { + struct wrepl_socket *wrepl_socket; + struct tevent_context *ev; + } caller; + struct tsocket_address *local_address; + struct tsocket_address *remote_address; + struct tstream_context *stream; +}; + +static void wrepl_connect_trigger(struct tevent_req *req, + void *private_date); + +struct tevent_req *wrepl_connect_send(TALLOC_CTX *mem_ctx, + struct tevent_context *ev, + struct wrepl_socket *wrepl_socket, + const char *our_ip, const char *peer_ip) +{ + struct tevent_req *req; + struct wrepl_connect_state *state; + int ret; + bool ok; + + req = tevent_req_create(mem_ctx, &state, + struct wrepl_connect_state); + if (req == NULL) { + return NULL; + } + + state->caller.wrepl_socket = wrepl_socket; + state->caller.ev = ev; + + if (wrepl_socket->stream) { + tevent_req_nterror(req, NT_STATUS_CONNECTION_ACTIVE); + return tevent_req_post(req, ev); + } + + ret = tsocket_address_inet_from_strings(state, "ipv4", + our_ip, 0, + &state->local_address); + if (ret != 0) { + NTSTATUS status = map_nt_error_from_unix_common(errno); + tevent_req_nterror(req, status); + return tevent_req_post(req, ev); + } + + ret = tsocket_address_inet_from_strings(state, "ipv4", + peer_ip, WINS_REPLICATION_PORT, + &state->remote_address); + if (ret != 0) { + NTSTATUS status = map_nt_error_from_unix_common(errno); + tevent_req_nterror(req, status); + return tevent_req_post(req, ev); + } + + ok = tevent_queue_add(wrepl_socket->request_queue, + ev, + req, + wrepl_connect_trigger, + NULL); + if (!ok) { + tevent_req_oom(req); + return tevent_req_post(req, ev); + } + + if (wrepl_socket->request_timeout > 0) { + struct timeval endtime; + endtime = tevent_timeval_current_ofs(wrepl_socket->request_timeout, 0); + ok = tevent_req_set_endtime(req, ev, endtime); + if (!ok) { + return tevent_req_post(req, ev); + } + } + + return req; +} + +static void wrepl_connect_done(struct tevent_req *subreq); + +static void wrepl_connect_trigger(struct tevent_req *req, + void *private_date) +{ + struct wrepl_connect_state *state = tevent_req_data(req, + struct wrepl_connect_state); + struct tevent_req *subreq; + + subreq = tstream_inet_tcp_connect_send(state, + state->caller.ev, + state->local_address, + state->remote_address); + if (tevent_req_nomem(subreq, req)) { + return; + } + tevent_req_set_callback(subreq, wrepl_connect_done, req); + + return; +} + +static void wrepl_connect_done(struct tevent_req *subreq) +{ + struct tevent_req *req = tevent_req_callback_data(subreq, + struct tevent_req); + struct wrepl_connect_state *state = tevent_req_data(req, + struct wrepl_connect_state); + int ret; + int sys_errno; + + ret = tstream_inet_tcp_connect_recv(subreq, &sys_errno, + state, &state->stream, NULL); + if (ret != 0) { + NTSTATUS status = map_nt_error_from_unix_common(sys_errno); + tevent_req_nterror(req, status); + return; + } + + tevent_req_done(req); +} + +/* + connect a wrepl_socket to a WINS server - recv side +*/ +NTSTATUS wrepl_connect_recv(struct tevent_req *req) +{ + struct wrepl_connect_state *state = tevent_req_data(req, + struct wrepl_connect_state); + struct wrepl_socket *wrepl_socket = state->caller.wrepl_socket; + NTSTATUS status; + + if (tevent_req_is_nterror(req, &status)) { + tevent_req_received(req); + return status; + } + + wrepl_socket->stream = talloc_move(wrepl_socket, &state->stream); + + tevent_req_received(req); + return NT_STATUS_OK; +} + +/* + connect a wrepl_socket to a WINS server - sync API +*/ +NTSTATUS wrepl_connect(struct wrepl_socket *wrepl_socket, + const char *our_ip, const char *peer_ip) +{ + struct tevent_req *subreq; + bool ok; + NTSTATUS status; + + subreq = wrepl_connect_send(wrepl_socket, wrepl_socket->event.ctx, + wrepl_socket, our_ip, peer_ip); + NT_STATUS_HAVE_NO_MEMORY(subreq); + + ok = tevent_req_poll(subreq, wrepl_socket->event.ctx); + if (!ok) { + TALLOC_FREE(subreq); + return NT_STATUS_INTERNAL_ERROR; + } + + status = wrepl_connect_recv(subreq); + TALLOC_FREE(subreq); + NT_STATUS_NOT_OK_RETURN(status); + + return NT_STATUS_OK; +} + +struct wrepl_request_state { + struct { + struct wrepl_socket *wrepl_socket; + struct tevent_context *ev; + } caller; + struct wrepl_send_ctrl ctrl; + struct { + struct wrepl_wrap wrap; + DATA_BLOB blob; + struct iovec iov; + } req; + bool one_way; + struct { + DATA_BLOB blob; + struct wrepl_packet *packet; + } rep; +}; + +static void wrepl_request_trigger(struct tevent_req *req, + void *private_data); + +struct tevent_req *wrepl_request_send(TALLOC_CTX *mem_ctx, + struct tevent_context *ev, + struct wrepl_socket *wrepl_socket, + const struct wrepl_packet *packet, + const struct wrepl_send_ctrl *ctrl) +{ + struct tevent_req *req; + struct wrepl_request_state *state; + NTSTATUS status; + enum ndr_err_code ndr_err; + bool ok; + + if (wrepl_socket->event.ctx != ev) { + /* TODO: remove wrepl_socket->event.ctx !!! */ + smb_panic("wrepl_associate_stop_send event context mismatch!"); + return NULL; + } + + req = tevent_req_create(mem_ctx, &state, + struct wrepl_request_state); + if (req == NULL) { + return NULL; + } + + state->caller.wrepl_socket = wrepl_socket; + state->caller.ev = ev; + + if (ctrl) { + state->ctrl = *ctrl; + } + + if (wrepl_socket->stream == NULL) { + tevent_req_nterror(req, NT_STATUS_CONNECTION_DISCONNECTED); + return tevent_req_post(req, ev); + } + + state->req.wrap.packet = *packet; + ndr_err = ndr_push_struct_blob(&state->req.blob, state, + &state->req.wrap, + (ndr_push_flags_fn_t)ndr_push_wrepl_wrap); + if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) { + status = ndr_map_error2ntstatus(ndr_err); + tevent_req_nterror(req, status); + return tevent_req_post(req, ev); + } + + state->req.iov.iov_base = (char *) state->req.blob.data; + state->req.iov.iov_len = state->req.blob.length; + + ok = tevent_queue_add(wrepl_socket->request_queue, + ev, + req, + wrepl_request_trigger, + NULL); + if (!ok) { + tevent_req_oom(req); + return tevent_req_post(req, ev); + } + + if (wrepl_socket->request_timeout > 0) { + struct timeval endtime; + endtime = tevent_timeval_current_ofs(wrepl_socket->request_timeout, 0); + ok = tevent_req_set_endtime(req, ev, endtime); + if (!ok) { + return tevent_req_post(req, ev); + } + } + + return req; +} + +static void wrepl_request_writev_done(struct tevent_req *subreq); + +static void wrepl_request_trigger(struct tevent_req *req, + void *private_data) +{ + struct wrepl_request_state *state = tevent_req_data(req, + struct wrepl_request_state); + struct tevent_req *subreq; + + if (state->caller.wrepl_socket->stream == NULL) { + tevent_req_nterror(req, NT_STATUS_CONNECTION_DISCONNECTED); + return; + } + + if (DEBUGLVL(10)) { + DEBUG(10,("Sending WINS packet of length %u\n", + (unsigned)state->req.blob.length)); + NDR_PRINT_DEBUG(wrepl_packet, &state->req.wrap.packet); + } + + subreq = tstream_writev_send(state, + state->caller.ev, + state->caller.wrepl_socket->stream, + &state->req.iov, 1); + if (tevent_req_nomem(subreq, req)) { + return; + } + tevent_req_set_callback(subreq, wrepl_request_writev_done, req); +} + +static void wrepl_request_disconnect_done(struct tevent_req *subreq); +static void wrepl_request_read_pdu_done(struct tevent_req *subreq); + +static void wrepl_request_writev_done(struct tevent_req *subreq) +{ + struct tevent_req *req = tevent_req_callback_data(subreq, + struct tevent_req); + struct wrepl_request_state *state = tevent_req_data(req, + struct wrepl_request_state); + int ret; + int sys_errno; + + ret = tstream_writev_recv(subreq, &sys_errno); + TALLOC_FREE(subreq); + if (ret == -1) { + NTSTATUS status = map_nt_error_from_unix_common(sys_errno); + TALLOC_FREE(state->caller.wrepl_socket->stream); + tevent_req_nterror(req, status); + return; + } + + if (state->caller.wrepl_socket->stream == NULL) { + tevent_req_nterror(req, NT_STATUS_CONNECTION_DISCONNECTED); + return; + } + + if (state->ctrl.disconnect_after_send) { + subreq = tstream_disconnect_send(state, + state->caller.ev, + state->caller.wrepl_socket->stream); + if (tevent_req_nomem(subreq, req)) { + return; + } + tevent_req_set_callback(subreq, wrepl_request_disconnect_done, req); + return; + } + + if (state->ctrl.send_only) { + tevent_req_done(req); + return; + } + + subreq = tstream_read_pdu_blob_send(state, + state->caller.ev, + state->caller.wrepl_socket->stream, + 4, /* initial_read_size */ + packet_full_request_u32, + NULL); + if (tevent_req_nomem(subreq, req)) { + return; + } + tevent_req_set_callback(subreq, wrepl_request_read_pdu_done, req); +} + +static void wrepl_request_disconnect_done(struct tevent_req *subreq) +{ + struct tevent_req *req = tevent_req_callback_data(subreq, + struct tevent_req); + struct wrepl_request_state *state = tevent_req_data(req, + struct wrepl_request_state); + int ret; + int sys_errno; + + ret = tstream_disconnect_recv(subreq, &sys_errno); + TALLOC_FREE(subreq); + if (ret == -1) { + NTSTATUS status = map_nt_error_from_unix_common(sys_errno); + TALLOC_FREE(state->caller.wrepl_socket->stream); + tevent_req_nterror(req, status); + return; + } + + DEBUG(10,("WINS connection disconnected\n")); + TALLOC_FREE(state->caller.wrepl_socket->stream); + + tevent_req_done(req); +} + +static void wrepl_request_read_pdu_done(struct tevent_req *subreq) +{ + struct tevent_req *req = tevent_req_callback_data(subreq, + struct tevent_req); + struct wrepl_request_state *state = tevent_req_data(req, + struct wrepl_request_state); + NTSTATUS status; + DATA_BLOB blob; + enum ndr_err_code ndr_err; + + status = tstream_read_pdu_blob_recv(subreq, state, &state->rep.blob); + if (!NT_STATUS_IS_OK(status)) { + TALLOC_FREE(state->caller.wrepl_socket->stream); + tevent_req_nterror(req, status); + return; + } + + state->rep.packet = talloc(state, struct wrepl_packet); + if (tevent_req_nomem(state->rep.packet, req)) { + return; + } + + blob.data = state->rep.blob.data + 4; + blob.length = state->rep.blob.length - 4; + + /* we have a full request - parse it */ + ndr_err = ndr_pull_struct_blob(&blob, + state->rep.packet, + state->rep.packet, + (ndr_pull_flags_fn_t)ndr_pull_wrepl_packet); + if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) { + status = ndr_map_error2ntstatus(ndr_err); + tevent_req_nterror(req, status); + return; + } + + if (DEBUGLVL(10)) { + DEBUG(10,("Received WINS packet of length %u\n", + (unsigned)state->rep.blob.length)); + NDR_PRINT_DEBUG(wrepl_packet, state->rep.packet); + } + + tevent_req_done(req); +} + +NTSTATUS wrepl_request_recv(struct tevent_req *req, + TALLOC_CTX *mem_ctx, + struct wrepl_packet **packet) +{ + struct wrepl_request_state *state = tevent_req_data(req, + struct wrepl_request_state); + NTSTATUS status; + + if (tevent_req_is_nterror(req, &status)) { + TALLOC_FREE(state->caller.wrepl_socket->stream); + tevent_req_received(req); + return status; + } + + if (packet) { + *packet = talloc_move(mem_ctx, &state->rep.packet); + } + + tevent_req_received(req); + return NT_STATUS_OK; +} + +/* + a full WINS replication request/response +*/ +NTSTATUS wrepl_request(struct wrepl_socket *wrepl_socket, + TALLOC_CTX *mem_ctx, + const struct wrepl_packet *req_packet, + struct wrepl_packet **reply_packet) +{ + struct tevent_req *subreq; + bool ok; + NTSTATUS status; + + subreq = wrepl_request_send(mem_ctx, wrepl_socket->event.ctx, + wrepl_socket, req_packet, NULL); + NT_STATUS_HAVE_NO_MEMORY(subreq); + + ok = tevent_req_poll(subreq, wrepl_socket->event.ctx); + if (!ok) { + TALLOC_FREE(subreq); + return NT_STATUS_INTERNAL_ERROR; + } + + status = wrepl_request_recv(subreq, mem_ctx, reply_packet); + TALLOC_FREE(subreq); + NT_STATUS_NOT_OK_RETURN(status); + + return NT_STATUS_OK; +} + + +struct wrepl_associate_state { + struct wrepl_packet packet; + uint32_t assoc_ctx; + uint16_t major_version; +}; + +static void wrepl_associate_done(struct tevent_req *subreq); + +struct tevent_req *wrepl_associate_send(TALLOC_CTX *mem_ctx, + struct tevent_context *ev, + struct wrepl_socket *wrepl_socket, + const struct wrepl_associate *io) +{ + struct tevent_req *req; + struct wrepl_associate_state *state; + struct tevent_req *subreq; + + if (wrepl_socket->event.ctx != ev) { + /* TODO: remove wrepl_socket->event.ctx !!! */ + smb_panic("wrepl_associate_send event context mismatch!"); + return NULL; + } + + req = tevent_req_create(mem_ctx, &state, + struct wrepl_associate_state); + if (req == NULL) { + return NULL; + }; + + state->packet.opcode = WREPL_OPCODE_BITS; + state->packet.mess_type = WREPL_START_ASSOCIATION; + state->packet.message.start.minor_version = 2; + state->packet.message.start.major_version = 5; + + /* + * nt4 uses 41 bytes for the start_association call + * so do it the same and as we don't know th emeanings of this bytes + * we just send zeros and nt4, w2k and w2k3 seems to be happy with this + * + * if we don't do this nt4 uses an old version of the wins replication protocol + * and that would break nt4 <-> samba replication + */ + state->packet.padding = data_blob_talloc(state, NULL, 21); + if (tevent_req_nomem(state->packet.padding.data, req)) { + return tevent_req_post(req, ev); + } + memset(state->packet.padding.data, 0, state->packet.padding.length); + + subreq = wrepl_request_send(state, ev, wrepl_socket, &state->packet, NULL); + if (tevent_req_nomem(subreq, req)) { + return tevent_req_post(req, ev); + } + tevent_req_set_callback(subreq, wrepl_associate_done, req); + + return req; +} + +static void wrepl_associate_done(struct tevent_req *subreq) +{ + struct tevent_req *req = tevent_req_callback_data(subreq, + struct tevent_req); + struct wrepl_associate_state *state = tevent_req_data(req, + struct wrepl_associate_state); + NTSTATUS status; + struct wrepl_packet *packet; + + status = wrepl_request_recv(subreq, state, &packet); + TALLOC_FREE(subreq); + if (!NT_STATUS_IS_OK(status)) { + tevent_req_nterror(req, status); + return; + } + + if (packet->mess_type != WREPL_START_ASSOCIATION_REPLY) { + tevent_req_nterror(req, NT_STATUS_INVALID_NETWORK_RESPONSE); + return; + } + + state->assoc_ctx = packet->message.start_reply.assoc_ctx; + state->major_version = packet->message.start_reply.major_version; + + tevent_req_done(req); +} + +/* + setup an association - recv +*/ +NTSTATUS wrepl_associate_recv(struct tevent_req *req, + struct wrepl_associate *io) +{ + struct wrepl_associate_state *state = tevent_req_data(req, + struct wrepl_associate_state); + NTSTATUS status; + + if (tevent_req_is_nterror(req, &status)) { + tevent_req_received(req); + return status; + } + + io->out.assoc_ctx = state->assoc_ctx; + io->out.major_version = state->major_version; + + tevent_req_received(req); + return NT_STATUS_OK; +} + +/* + setup an association - sync api +*/ +NTSTATUS wrepl_associate(struct wrepl_socket *wrepl_socket, + struct wrepl_associate *io) +{ + struct tevent_req *subreq; + bool ok; + NTSTATUS status; + + subreq = wrepl_associate_send(wrepl_socket, wrepl_socket->event.ctx, + wrepl_socket, io); + NT_STATUS_HAVE_NO_MEMORY(subreq); + + ok = tevent_req_poll(subreq, wrepl_socket->event.ctx); + if (!ok) { + TALLOC_FREE(subreq); + return NT_STATUS_INTERNAL_ERROR; + } + + status = wrepl_associate_recv(subreq, io); + TALLOC_FREE(subreq); + NT_STATUS_NOT_OK_RETURN(status); + + return NT_STATUS_OK; +} + +struct wrepl_associate_stop_state { + struct wrepl_packet packet; + struct wrepl_send_ctrl ctrl; +}; + +static void wrepl_associate_stop_done(struct tevent_req *subreq); + +struct tevent_req *wrepl_associate_stop_send(TALLOC_CTX *mem_ctx, + struct tevent_context *ev, + struct wrepl_socket *wrepl_socket, + const struct wrepl_associate_stop *io) +{ + struct tevent_req *req; + struct wrepl_associate_stop_state *state; + struct tevent_req *subreq; + + if (wrepl_socket->event.ctx != ev) { + /* TODO: remove wrepl_socket->event.ctx !!! */ + smb_panic("wrepl_associate_stop_send event context mismatch!"); + return NULL; + } + + req = tevent_req_create(mem_ctx, &state, + struct wrepl_associate_stop_state); + if (req == NULL) { + return NULL; + }; + + state->packet.opcode = WREPL_OPCODE_BITS; + state->packet.assoc_ctx = io->in.assoc_ctx; + state->packet.mess_type = WREPL_STOP_ASSOCIATION; + state->packet.message.stop.reason = io->in.reason; + + if (io->in.reason == 0) { + state->ctrl.send_only = true; + state->ctrl.disconnect_after_send = true; + } + + subreq = wrepl_request_send(state, ev, wrepl_socket, &state->packet, &state->ctrl); + if (tevent_req_nomem(subreq, req)) { + return tevent_req_post(req, ev); + } + tevent_req_set_callback(subreq, wrepl_associate_stop_done, req); + + return req; +} + +static void wrepl_associate_stop_done(struct tevent_req *subreq) +{ + struct tevent_req *req = tevent_req_callback_data(subreq, + struct tevent_req); + struct wrepl_associate_stop_state *state = tevent_req_data(req, + struct wrepl_associate_stop_state); + NTSTATUS status; + + /* currently we don't care about a possible response */ + status = wrepl_request_recv(subreq, state, NULL); + TALLOC_FREE(subreq); + if (!NT_STATUS_IS_OK(status)) { + tevent_req_nterror(req, status); + return; + } + + tevent_req_done(req); +} + +/* + stop an association - recv +*/ +NTSTATUS wrepl_associate_stop_recv(struct tevent_req *req, + struct wrepl_associate_stop *io) +{ + NTSTATUS status; + + if (tevent_req_is_nterror(req, &status)) { + tevent_req_received(req); + return status; + } + + tevent_req_received(req); + return NT_STATUS_OK; +} + +/* + setup an association - sync api +*/ +NTSTATUS wrepl_associate_stop(struct wrepl_socket *wrepl_socket, + struct wrepl_associate_stop *io) +{ + struct tevent_req *subreq; + bool ok; + NTSTATUS status; + + subreq = wrepl_associate_stop_send(wrepl_socket, wrepl_socket->event.ctx, + wrepl_socket, io); + NT_STATUS_HAVE_NO_MEMORY(subreq); + + ok = tevent_req_poll(subreq, wrepl_socket->event.ctx); + if (!ok) { + TALLOC_FREE(subreq); + return NT_STATUS_INTERNAL_ERROR; + } + + status = wrepl_associate_stop_recv(subreq, io); + TALLOC_FREE(subreq); + NT_STATUS_NOT_OK_RETURN(status); + + return NT_STATUS_OK; +} + +struct wrepl_pull_table_state { + struct wrepl_packet packet; + uint32_t num_partners; + struct wrepl_wins_owner *partners; +}; + +static void wrepl_pull_table_done(struct tevent_req *subreq); + +struct tevent_req *wrepl_pull_table_send(TALLOC_CTX *mem_ctx, + struct tevent_context *ev, + struct wrepl_socket *wrepl_socket, + const struct wrepl_pull_table *io) +{ + struct tevent_req *req; + struct wrepl_pull_table_state *state; + struct tevent_req *subreq; + + if (wrepl_socket->event.ctx != ev) { + /* TODO: remove wrepl_socket->event.ctx !!! */ + smb_panic("wrepl_pull_table_send event context mismatch!"); + return NULL; + } + + req = tevent_req_create(mem_ctx, &state, + struct wrepl_pull_table_state); + if (req == NULL) { + return NULL; + }; + + state->packet.opcode = WREPL_OPCODE_BITS; + state->packet.assoc_ctx = io->in.assoc_ctx; + state->packet.mess_type = WREPL_REPLICATION; + state->packet.message.replication.command = WREPL_REPL_TABLE_QUERY; + + subreq = wrepl_request_send(state, ev, wrepl_socket, &state->packet, NULL); + if (tevent_req_nomem(subreq, req)) { + return tevent_req_post(req, ev); + } + tevent_req_set_callback(subreq, wrepl_pull_table_done, req); + + return req; +} + +static void wrepl_pull_table_done(struct tevent_req *subreq) +{ + struct tevent_req *req = tevent_req_callback_data(subreq, + struct tevent_req); + struct wrepl_pull_table_state *state = tevent_req_data(req, + struct wrepl_pull_table_state); + NTSTATUS status; + struct wrepl_packet *packet; + struct wrepl_table *table; + + status = wrepl_request_recv(subreq, state, &packet); + TALLOC_FREE(subreq); + if (!NT_STATUS_IS_OK(status)) { + tevent_req_nterror(req, status); + return; + } + + if (packet->mess_type != WREPL_REPLICATION) { + tevent_req_nterror(req, NT_STATUS_NETWORK_ACCESS_DENIED); + return; + } + + if (packet->message.replication.command != WREPL_REPL_TABLE_REPLY) { + tevent_req_nterror(req, NT_STATUS_INVALID_NETWORK_RESPONSE); + return; + } + + table = &packet->message.replication.info.table; + + state->num_partners = table->partner_count; + state->partners = talloc_move(state, &table->partners); + + tevent_req_done(req); +} + +/* + fetch the partner tables - recv +*/ +NTSTATUS wrepl_pull_table_recv(struct tevent_req *req, + TALLOC_CTX *mem_ctx, + struct wrepl_pull_table *io) +{ + struct wrepl_pull_table_state *state = tevent_req_data(req, + struct wrepl_pull_table_state); + NTSTATUS status; + + if (tevent_req_is_nterror(req, &status)) { + tevent_req_received(req); + return status; + } + + io->out.num_partners = state->num_partners; + io->out.partners = talloc_move(mem_ctx, &state->partners); + + tevent_req_received(req); + return NT_STATUS_OK; +} + +/* + fetch the partner table - sync api +*/ +NTSTATUS wrepl_pull_table(struct wrepl_socket *wrepl_socket, + TALLOC_CTX *mem_ctx, + struct wrepl_pull_table *io) +{ + struct tevent_req *subreq; + bool ok; + NTSTATUS status; + + subreq = wrepl_pull_table_send(mem_ctx, wrepl_socket->event.ctx, + wrepl_socket, io); + NT_STATUS_HAVE_NO_MEMORY(subreq); + + ok = tevent_req_poll(subreq, wrepl_socket->event.ctx); + if (!ok) { + TALLOC_FREE(subreq); + return NT_STATUS_INTERNAL_ERROR; + } + + status = wrepl_pull_table_recv(subreq, mem_ctx, io); + TALLOC_FREE(subreq); + NT_STATUS_NOT_OK_RETURN(status); + + return NT_STATUS_OK; +} + + +struct wrepl_pull_names_state { + struct { + const struct wrepl_pull_names *io; + } caller; + struct wrepl_packet packet; + uint32_t num_names; + struct wrepl_name *names; +}; + +static void wrepl_pull_names_done(struct tevent_req *subreq); + +struct tevent_req *wrepl_pull_names_send(TALLOC_CTX *mem_ctx, + struct tevent_context *ev, + struct wrepl_socket *wrepl_socket, + const struct wrepl_pull_names *io) +{ + struct tevent_req *req; + struct wrepl_pull_names_state *state; + struct tevent_req *subreq; + + if (wrepl_socket->event.ctx != ev) { + /* TODO: remove wrepl_socket->event.ctx !!! */ + smb_panic("wrepl_pull_names_send event context mismatch!"); + return NULL; + } + + req = tevent_req_create(mem_ctx, &state, + struct wrepl_pull_names_state); + if (req == NULL) { + return NULL; + }; + state->caller.io = io; + + state->packet.opcode = WREPL_OPCODE_BITS; + state->packet.assoc_ctx = io->in.assoc_ctx; + state->packet.mess_type = WREPL_REPLICATION; + state->packet.message.replication.command = WREPL_REPL_SEND_REQUEST; + state->packet.message.replication.info.owner = io->in.partner; + + subreq = wrepl_request_send(state, ev, wrepl_socket, &state->packet, NULL); + if (tevent_req_nomem(subreq, req)) { + return tevent_req_post(req, ev); + } + tevent_req_set_callback(subreq, wrepl_pull_names_done, req); + + return req; +} + +static void wrepl_pull_names_done(struct tevent_req *subreq) +{ + struct tevent_req *req = tevent_req_callback_data(subreq, + struct tevent_req); + struct wrepl_pull_names_state *state = tevent_req_data(req, + struct wrepl_pull_names_state); + NTSTATUS status; + struct wrepl_packet *packet; + uint32_t i; + + status = wrepl_request_recv(subreq, state, &packet); + TALLOC_FREE(subreq); + if (!NT_STATUS_IS_OK(status)) { + tevent_req_nterror(req, status); + return; + } + + if (packet->mess_type != WREPL_REPLICATION) { + tevent_req_nterror(req, NT_STATUS_NETWORK_ACCESS_DENIED); + return; + } + + if (packet->message.replication.command != WREPL_REPL_SEND_REPLY) { + tevent_req_nterror(req, NT_STATUS_INVALID_NETWORK_RESPONSE); + return; + } + + state->num_names = packet->message.replication.info.reply.num_names; + + state->names = talloc_array(state, struct wrepl_name, state->num_names); + if (tevent_req_nomem(state->names, req)) { + return; + } + + /* convert the list of names and addresses to a sane format */ + for (i=0; i < state->num_names; i++) { + struct wrepl_wins_name *wname = &packet->message.replication.info.reply.names[i]; + struct wrepl_name *name = &state->names[i]; + + name->name = *wname->name; + talloc_steal(state->names, wname->name); + name->type = WREPL_NAME_TYPE(wname->flags); + name->state = WREPL_NAME_STATE(wname->flags); + name->node = WREPL_NAME_NODE(wname->flags); + name->is_static = WREPL_NAME_IS_STATIC(wname->flags); + name->raw_flags = wname->flags; + name->version_id= wname->id; + name->owner = talloc_strdup(state->names, + state->caller.io->in.partner.address); + if (tevent_req_nomem(name->owner, req)) { + return; + } + + /* trying to save 1 or 2 bytes on the wire isn't a good idea */ + if (wname->flags & 2) { + uint32_t j; + + name->num_addresses = wname->addresses.addresses.num_ips; + name->addresses = talloc_array(state->names, + struct wrepl_address, + name->num_addresses); + if (tevent_req_nomem(name->addresses, req)) { + return; + } + + for (j=0;j<name->num_addresses;j++) { + name->addresses[j].owner = + talloc_move(name->addresses, + &wname->addresses.addresses.ips[j].owner); + name->addresses[j].address = + talloc_move(name->addresses, + &wname->addresses.addresses.ips[j].ip); + } + } else { + name->num_addresses = 1; + name->addresses = talloc_array(state->names, + struct wrepl_address, + name->num_addresses); + if (tevent_req_nomem(name->addresses, req)) { + return; + } + + name->addresses[0].owner = talloc_strdup(name->addresses, name->owner); + if (tevent_req_nomem(name->addresses[0].owner, req)) { + return; + } + name->addresses[0].address = talloc_move(name->addresses, + &wname->addresses.ip); + } + } + + tevent_req_done(req); +} + +/* + fetch the names for a WINS partner - recv +*/ +NTSTATUS wrepl_pull_names_recv(struct tevent_req *req, + TALLOC_CTX *mem_ctx, + struct wrepl_pull_names *io) +{ + struct wrepl_pull_names_state *state = tevent_req_data(req, + struct wrepl_pull_names_state); + NTSTATUS status; + + if (tevent_req_is_nterror(req, &status)) { + tevent_req_received(req); + return status; + } + + io->out.num_names = state->num_names; + io->out.names = talloc_move(mem_ctx, &state->names); + + tevent_req_received(req); + return NT_STATUS_OK; +} + + + +/* + fetch the names for a WINS partner - sync api +*/ +NTSTATUS wrepl_pull_names(struct wrepl_socket *wrepl_socket, + TALLOC_CTX *mem_ctx, + struct wrepl_pull_names *io) +{ + struct tevent_req *subreq; + bool ok; + NTSTATUS status; + + subreq = wrepl_pull_names_send(mem_ctx, wrepl_socket->event.ctx, + wrepl_socket, io); + NT_STATUS_HAVE_NO_MEMORY(subreq); + + ok = tevent_req_poll(subreq, wrepl_socket->event.ctx); + if (!ok) { + TALLOC_FREE(subreq); + return NT_STATUS_INTERNAL_ERROR; + } + + status = wrepl_pull_names_recv(subreq, mem_ctx, io); + TALLOC_FREE(subreq); + NT_STATUS_NOT_OK_RETURN(status); + + return NT_STATUS_OK; +} |