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Diffstat (limited to 'source4/libcli/nbt/nbtsocket.c')
-rw-r--r--source4/libcli/nbt/nbtsocket.c521
1 files changed, 0 insertions, 521 deletions
diff --git a/source4/libcli/nbt/nbtsocket.c b/source4/libcli/nbt/nbtsocket.c
deleted file mode 100644
index 5d4611e2d9..0000000000
--- a/source4/libcli/nbt/nbtsocket.c
+++ /dev/null
@@ -1,521 +0,0 @@
-/*
- Unix SMB/CIFS implementation.
-
- low level socket handling for nbt requests
-
- Copyright (C) Andrew Tridgell 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 "lib/events/events.h"
-#include "lib/util/dlinklist.h"
-#include "libcli/nbt/libnbt.h"
-#include "lib/socket/socket.h"
-#include "librpc/gen_ndr/ndr_nbt.h"
-#include "param/param.h"
-
-#define NBT_MAX_REPLIES 1000
-
-/*
- destroy a pending request
-*/
-static int nbt_name_request_destructor(struct nbt_name_request *req)
-{
- if (req->state == NBT_REQUEST_SEND) {
- DLIST_REMOVE(req->nbtsock->send_queue, req);
- }
- if (req->state == NBT_REQUEST_WAIT) {
- req->nbtsock->num_pending--;
- }
- if (req->name_trn_id != 0 && !req->is_reply) {
- idr_remove(req->nbtsock->idr, req->name_trn_id);
- req->name_trn_id = 0;
- }
- if (req->te) {
- talloc_free(req->te);
- req->te = NULL;
- }
- if (req->nbtsock->send_queue == NULL) {
- EVENT_FD_NOT_WRITEABLE(req->nbtsock->fde);
- }
- if (req->nbtsock->num_pending == 0 &&
- req->nbtsock->incoming.handler == NULL) {
- EVENT_FD_NOT_READABLE(req->nbtsock->fde);
- }
- return 0;
-}
-
-
-/*
- handle send events on a nbt name socket
-*/
-static void nbt_name_socket_send(struct nbt_name_socket *nbtsock)
-{
- struct nbt_name_request *req = nbtsock->send_queue;
- TALLOC_CTX *tmp_ctx = talloc_new(nbtsock);
- NTSTATUS status;
-
- while ((req = nbtsock->send_queue)) {
- size_t len;
-
- len = req->encoded.length;
- status = socket_sendto(nbtsock->sock, &req->encoded, &len,
- req->dest);
- if (NT_STATUS_IS_ERR(status)) goto failed;
-
- if (!NT_STATUS_IS_OK(status)) {
- talloc_free(tmp_ctx);
- return;
- }
-
- DLIST_REMOVE(nbtsock->send_queue, req);
- req->state = NBT_REQUEST_WAIT;
- if (req->is_reply) {
- talloc_free(req);
- } else {
- EVENT_FD_READABLE(nbtsock->fde);
- nbtsock->num_pending++;
- }
- }
-
- EVENT_FD_NOT_WRITEABLE(nbtsock->fde);
- talloc_free(tmp_ctx);
- return;
-
-failed:
- DLIST_REMOVE(nbtsock->send_queue, req);
- nbt_name_request_destructor(req);
- req->status = status;
- req->state = NBT_REQUEST_ERROR;
- talloc_free(tmp_ctx);
- if (req->async.fn) {
- req->async.fn(req);
- } else if (req->is_reply) {
- talloc_free(req);
- }
- return;
-}
-
-
-/*
- handle a request timeout
-*/
-static void nbt_name_socket_timeout(struct event_context *ev, struct timed_event *te,
- struct timeval t, void *private)
-{
- struct nbt_name_request *req = talloc_get_type(private,
- struct nbt_name_request);
-
- if (req->num_retries != 0) {
- req->num_retries--;
- req->te = event_add_timed(req->nbtsock->event_ctx, req,
- timeval_add(&t, req->timeout, 0),
- nbt_name_socket_timeout, req);
- if (req->state != NBT_REQUEST_SEND) {
- req->state = NBT_REQUEST_SEND;
- DLIST_ADD_END(req->nbtsock->send_queue, req,
- struct nbt_name_request *);
- }
- EVENT_FD_WRITEABLE(req->nbtsock->fde);
- return;
- }
-
- nbt_name_request_destructor(req);
- if (req->num_replies == 0) {
- req->state = NBT_REQUEST_TIMEOUT;
- req->status = NT_STATUS_IO_TIMEOUT;
- } else {
- req->state = NBT_REQUEST_DONE;
- req->status = NT_STATUS_OK;
- }
- if (req->async.fn) {
- req->async.fn(req);
- } else if (req->is_reply) {
- talloc_free(req);
- }
-}
-
-
-
-/**
- handle recv events on a nbt name socket
-*/
-static void nbt_name_socket_recv(struct nbt_name_socket *nbtsock)
-{
- TALLOC_CTX *tmp_ctx = talloc_new(nbtsock);
- NTSTATUS status;
- enum ndr_err_code ndr_err;
- struct socket_address *src;
- DATA_BLOB blob;
- size_t nread, dsize;
- struct nbt_name_packet *packet;
- struct nbt_name_request *req;
-
- status = socket_pending(nbtsock->sock, &dsize);
- if (!NT_STATUS_IS_OK(status)) {
- talloc_free(tmp_ctx);
- return;
- }
-
- blob = data_blob_talloc(tmp_ctx, NULL, dsize);
- if (blob.data == NULL) {
- talloc_free(tmp_ctx);
- return;
- }
-
- status = socket_recvfrom(nbtsock->sock, blob.data, blob.length, &nread,
- tmp_ctx, &src);
- if (!NT_STATUS_IS_OK(status)) {
- talloc_free(tmp_ctx);
- return;
- }
-
- packet = talloc(tmp_ctx, struct nbt_name_packet);
- if (packet == NULL) {
- talloc_free(tmp_ctx);
- return;
- }
-
- /* parse the request */
- ndr_err = ndr_pull_struct_blob(&blob, packet, nbtsock->iconv_convenience, packet,
- (ndr_pull_flags_fn_t)ndr_pull_nbt_name_packet);
- if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
- status = ndr_map_error2ntstatus(ndr_err);
- DEBUG(2,("Failed to parse incoming NBT name packet - %s\n",
- nt_errstr(status)));
- talloc_free(tmp_ctx);
- return;
- }
-
- if (DEBUGLVL(10)) {
- DEBUG(10,("Received nbt packet of length %d from %s:%d\n",
- (int)blob.length, src->addr, src->port));
- NDR_PRINT_DEBUG(nbt_name_packet, packet);
- }
-
- /* if its not a reply then pass it off to the incoming request
- handler, if any */
- if (!(packet->operation & NBT_FLAG_REPLY)) {
- if (nbtsock->incoming.handler) {
- nbtsock->incoming.handler(nbtsock, packet, src);
- }
- talloc_free(tmp_ctx);
- return;
- }
-
- /* find the matching request */
- req = (struct nbt_name_request *)idr_find(nbtsock->idr,
- packet->name_trn_id);
- if (req == NULL) {
- if (nbtsock->unexpected.handler) {
- nbtsock->unexpected.handler(nbtsock, packet, src);
- } else {
- DEBUG(10,("Failed to match request for incoming name packet id 0x%04x on %p\n",
- packet->name_trn_id, nbtsock));
- }
- talloc_free(tmp_ctx);
- return;
- }
-
- /* if this is a WACK response, this we need to go back to waiting,
- but perhaps increase the timeout */
- if ((packet->operation & NBT_OPCODE) == NBT_OPCODE_WACK) {
- if (req->received_wack || packet->ancount < 1) {
- nbt_name_request_destructor(req);
- req->status = NT_STATUS_INVALID_NETWORK_RESPONSE;
- req->state = NBT_REQUEST_ERROR;
- goto done;
- }
- talloc_free(req->te);
- /* we know we won't need any more retries - the server
- has received our request */
- req->num_retries = 0;
- req->received_wack = true;
- /* although there can be a timeout in the packet, w2k3 screws it up,
- so better to set it ourselves */
- req->timeout = lp_parm_int(global_loadparm, NULL, "nbt", "wack_timeout", 30);
- req->te = event_add_timed(req->nbtsock->event_ctx, req,
- timeval_current_ofs(req->timeout, 0),
- nbt_name_socket_timeout, req);
- talloc_free(tmp_ctx);
- return;
- }
-
-
- req->replies = talloc_realloc(req, req->replies, struct nbt_name_reply, req->num_replies+1);
- if (req->replies == NULL) {
- nbt_name_request_destructor(req);
- req->state = NBT_REQUEST_ERROR;
- req->status = NT_STATUS_NO_MEMORY;
- goto done;
- }
-
- talloc_steal(req, src);
- req->replies[req->num_replies].dest = src;
- talloc_steal(req, packet);
- req->replies[req->num_replies].packet = packet;
- req->num_replies++;
-
- /* if we don't want multiple replies then we are done */
- if (req->allow_multiple_replies &&
- req->num_replies < NBT_MAX_REPLIES) {
- talloc_free(tmp_ctx);
- return;
- }
-
- nbt_name_request_destructor(req);
- req->state = NBT_REQUEST_DONE;
- req->status = NT_STATUS_OK;
-
-done:
- talloc_free(tmp_ctx);
- if (req->async.fn) {
- req->async.fn(req);
- }
-}
-
-/*
- handle fd events on a nbt_name_socket
-*/
-static void nbt_name_socket_handler(struct event_context *ev, struct fd_event *fde,
- uint16_t flags, void *private)
-{
- struct nbt_name_socket *nbtsock = talloc_get_type(private,
- struct nbt_name_socket);
- if (flags & EVENT_FD_WRITE) {
- nbt_name_socket_send(nbtsock);
- }
- if (flags & EVENT_FD_READ) {
- nbt_name_socket_recv(nbtsock);
- }
-}
-
-
-/*
- initialise a nbt_name_socket. The event_ctx is optional, if provided
- then operations will use that event context
-*/
-_PUBLIC_ struct nbt_name_socket *nbt_name_socket_init(TALLOC_CTX *mem_ctx,
- struct event_context *event_ctx,
- struct smb_iconv_convenience *iconv_convenience)
-{
- struct nbt_name_socket *nbtsock;
- NTSTATUS status;
-
- nbtsock = talloc(mem_ctx, struct nbt_name_socket);
- if (nbtsock == NULL) goto failed;
-
- nbtsock->event_ctx = talloc_reference(nbtsock, event_ctx);
- if (nbtsock->event_ctx == NULL) goto failed;
-
- status = socket_create("ip", SOCKET_TYPE_DGRAM, &nbtsock->sock, 0);
- if (!NT_STATUS_IS_OK(status)) goto failed;
-
- socket_set_option(nbtsock->sock, "SO_BROADCAST", "1");
-
- talloc_steal(nbtsock, nbtsock->sock);
-
- nbtsock->idr = idr_init(nbtsock);
- if (nbtsock->idr == NULL) goto failed;
-
- nbtsock->send_queue = NULL;
- nbtsock->num_pending = 0;
- nbtsock->incoming.handler = NULL;
- nbtsock->unexpected.handler = NULL;
- nbtsock->iconv_convenience = iconv_convenience;
-
- nbtsock->fde = event_add_fd(nbtsock->event_ctx, nbtsock,
- socket_get_fd(nbtsock->sock), 0,
- nbt_name_socket_handler, nbtsock);
-
- return nbtsock;
-
-failed:
- talloc_free(nbtsock);
- return NULL;
-}
-
-/*
- send off a nbt name request
-*/
-struct nbt_name_request *nbt_name_request_send(struct nbt_name_socket *nbtsock,
- struct socket_address *dest,
- struct nbt_name_packet *request,
- int timeout, int retries,
- bool allow_multiple_replies)
-{
- struct nbt_name_request *req;
- int id;
- enum ndr_err_code ndr_err;
-
- req = talloc_zero(nbtsock, struct nbt_name_request);
- if (req == NULL) goto failed;
-
- req->nbtsock = nbtsock;
- req->allow_multiple_replies = allow_multiple_replies;
- req->state = NBT_REQUEST_SEND;
- req->is_reply = false;
- req->timeout = timeout;
- req->num_retries = retries;
- req->dest = dest;
- if (talloc_reference(req, dest) == NULL) goto failed;
-
- /* we select a random transaction id unless the user supplied one */
- if (request->name_trn_id == 0) {
- id = idr_get_new_random(req->nbtsock->idr, req, UINT16_MAX);
- } else {
- if (idr_find(req->nbtsock->idr, request->name_trn_id)) goto failed;
- id = idr_get_new_above(req->nbtsock->idr, req, request->name_trn_id,
- UINT16_MAX);
- }
- if (id == -1) goto failed;
-
- request->name_trn_id = id;
- req->name_trn_id = id;
-
- req->te = event_add_timed(nbtsock->event_ctx, req,
- timeval_current_ofs(req->timeout, 0),
- nbt_name_socket_timeout, req);
-
- talloc_set_destructor(req, nbt_name_request_destructor);
-
- ndr_err = ndr_push_struct_blob(&req->encoded, req,
- req->nbtsock->iconv_convenience,
- request,
- (ndr_push_flags_fn_t)ndr_push_nbt_name_packet);
- if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) goto failed;
-
- DLIST_ADD_END(nbtsock->send_queue, req, struct nbt_name_request *);
-
- if (DEBUGLVL(10)) {
- DEBUG(10,("Queueing nbt packet to %s:%d\n",
- req->dest->addr, req->dest->port));
- NDR_PRINT_DEBUG(nbt_name_packet, request);
- }
-
- EVENT_FD_WRITEABLE(nbtsock->fde);
-
- return req;
-
-failed:
- talloc_free(req);
- return NULL;
-}
-
-
-/*
- send off a nbt name reply
-*/
-_PUBLIC_ NTSTATUS nbt_name_reply_send(struct nbt_name_socket *nbtsock,
- struct socket_address *dest,
- struct nbt_name_packet *request)
-{
- struct nbt_name_request *req;
- enum ndr_err_code ndr_err;
-
- req = talloc_zero(nbtsock, struct nbt_name_request);
- NT_STATUS_HAVE_NO_MEMORY(req);
-
- req->nbtsock = nbtsock;
- req->dest = dest;
- if (talloc_reference(req, dest) == NULL) goto failed;
- req->state = NBT_REQUEST_SEND;
- req->is_reply = true;
-
- talloc_set_destructor(req, nbt_name_request_destructor);
-
- if (DEBUGLVL(10)) {
- NDR_PRINT_DEBUG(nbt_name_packet, request);
- }
-
- ndr_err = ndr_push_struct_blob(&req->encoded, req,
- req->nbtsock->iconv_convenience,
- request,
- (ndr_push_flags_fn_t)ndr_push_nbt_name_packet);
- if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
- talloc_free(req);
- return ndr_map_error2ntstatus(ndr_err);
- }
-
- DLIST_ADD_END(nbtsock->send_queue, req, struct nbt_name_request *);
-
- EVENT_FD_WRITEABLE(nbtsock->fde);
-
- return NT_STATUS_OK;
-
-failed:
- talloc_free(req);
- return NT_STATUS_NO_MEMORY;
-}
-
-/*
- wait for a nbt request to complete
-*/
-NTSTATUS nbt_name_request_recv(struct nbt_name_request *req)
-{
- if (!req) return NT_STATUS_NO_MEMORY;
-
- while (req->state < NBT_REQUEST_DONE) {
- if (event_loop_once(req->nbtsock->event_ctx) != 0) {
- req->state = NBT_REQUEST_ERROR;
- req->status = NT_STATUS_UNEXPECTED_NETWORK_ERROR;
- break;
- }
- }
- return req->status;
-}
-
-
-/*
- setup a handler for incoming requests
-*/
-_PUBLIC_ NTSTATUS nbt_set_incoming_handler(struct nbt_name_socket *nbtsock,
- void (*handler)(struct nbt_name_socket *, struct nbt_name_packet *,
- struct socket_address *),
- void *private)
-{
- nbtsock->incoming.handler = handler;
- nbtsock->incoming.private = private;
- EVENT_FD_READABLE(nbtsock->fde);
- return NT_STATUS_OK;
-}
-
-
-/*
- turn a NBT rcode into a NTSTATUS
-*/
-_PUBLIC_ NTSTATUS nbt_rcode_to_ntstatus(uint8_t rcode)
-{
- int i;
- struct {
- enum nbt_rcode rcode;
- NTSTATUS status;
- } map[] = {
- { NBT_RCODE_FMT, NT_STATUS_INVALID_PARAMETER },
- { NBT_RCODE_SVR, NT_STATUS_SERVER_DISABLED },
- { NBT_RCODE_NAM, NT_STATUS_OBJECT_NAME_NOT_FOUND },
- { NBT_RCODE_IMP, NT_STATUS_NOT_SUPPORTED },
- { NBT_RCODE_RFS, NT_STATUS_ACCESS_DENIED },
- { NBT_RCODE_ACT, NT_STATUS_ADDRESS_ALREADY_EXISTS },
- { NBT_RCODE_CFT, NT_STATUS_CONFLICTING_ADDRESSES }
- };
- for (i=0;i<ARRAY_SIZE(map);i++) {
- if (map[i].rcode == rcode) {
- return map[i].status;
- }
- }
- return NT_STATUS_UNSUCCESSFUL;
-}
generated by cgit (git 2.34.1) at 2024-11-28 20:35:01 +0000