bool init_pipe_handle_list(pipes_struct *p, const struct ndr_syntax_id *syntax)
{
pipes_struct *plist;
struct handle_list *hl;
for (plist = get_first_internal_pipe();
plist;
plist = get_next_internal_pipe(plist)) {
if (ndr_syntax_id_equal(syntax, &plist->syntax)) {
break;
}
if (is_samr_lsa_pipe(&plist->syntax)
&& is_samr_lsa_pipe(syntax)) {
/*
* samr and lsa share a handle space (same process
* under Windows?)
*/
break;
}
}
if (plist != NULL) {
hl = plist->pipe_handles;
if (hl == NULL) {
return false;
}
} else {
/*
* First open, we have to create the handle list
*/
hl = SMB_MALLOC_P(struct handle_list);
if (hl == NULL) {
return false;
}
ZERO_STRUCTP(hl);
DEBUG(10,("init_pipe_handles: created handle list for "
"pipe %s\n",
get_pipe_name_from_syntax(talloc_tos(), syntax)));
}
/*
* One more pipe is using this list.
*/
hl->pipe_ref_count++;
/*
* Point this pipe at this list.
*/
p->pipe_handles = hl;
DEBUG(10,("init_pipe_handles: pipe_handles ref count = %lu for pipe %s\n",
(unsigned long)p->pipe_handles->pipe_ref_count,
get_pipe_name_from_syntax(talloc_tos(), syntax)));
return True;
}
WERROR libnetapi_open_pipe(struct libnetapi_ctx *ctx,
const char *server_name,
const struct ndr_syntax_id *interface,
struct rpc_pipe_client **presult)
{
struct rpc_pipe_client *result = NULL;
NTSTATUS status;
WERROR werr;
struct client_ipc_connection *ipc = NULL;
if (!presult) {
return WERR_INVALID_PARAM;
}
werr = libnetapi_open_ipc_connection(ctx, server_name, &ipc);
if (!W_ERROR_IS_OK(werr)) {
return werr;
}
status = pipe_cm_open(ctx, ipc, interface, &result);
if (!NT_STATUS_IS_OK(status)) {
libnetapi_set_error_string(ctx, "failed to open PIPE %s: %s",
get_pipe_name_from_syntax(talloc_tos(), interface),
get_friendly_nt_error_msg(status));
return WERR_DEST_NOT_FOUND;
}
*presult = result;
return WERR_OK;
}
void *_policy_handle_create(struct pipes_struct *p, struct policy_handle *hnd,
uint32_t access_granted, size_t data_size,
const char *type, NTSTATUS *pstatus)
{
struct dcesrv_handle *rpc_hnd;
void *data;
if (p->pipe_handles->count > MAX_OPEN_POLS) {
DEBUG(0, ("ERROR: Too many handles (%d) for RPC connection %s\n",
(int) p->pipe_handles->count,
get_pipe_name_from_syntax(talloc_tos(),
&p->contexts->syntax)));
*pstatus = NT_STATUS_INSUFFICIENT_RESOURCES;
return NULL;
}
data = talloc_size(talloc_tos(), data_size);
if (data == NULL) {
*pstatus = NT_STATUS_NO_MEMORY;
return NULL;
}
talloc_set_name_const(data, type);
rpc_hnd = create_rpc_handle_internal(p, hnd, data);
if (rpc_hnd == NULL) {
TALLOC_FREE(data);
*pstatus = NT_STATUS_NO_MEMORY;
return NULL;
}
rpc_hnd->access_granted = access_granted;
*pstatus = NT_STATUS_OK;
return data;
}
void *_policy_handle_create(struct pipes_struct *p, struct policy_handle *hnd,
uint32_t access_granted, size_t data_size,
const char *type, NTSTATUS *pstatus)
{
struct policy *pol;
void *data;
if (p->pipe_handles->count > MAX_OPEN_POLS) {
DEBUG(0, ("policy_handle_create: ERROR: too many handles (%d) "
"on pipe %s.\n", (int)p->pipe_handles->count,
get_pipe_name_from_syntax(talloc_tos(), &p->syntax)));
*pstatus = NT_STATUS_INSUFFICIENT_RESOURCES;
return NULL;
}
data = talloc_size(talloc_tos(), data_size);
if (data == NULL) {
*pstatus = NT_STATUS_NO_MEMORY;
return NULL;
}
talloc_set_name_const(data, type);
pol = create_policy_hnd_internal(p, hnd, data);
if (pol == NULL) {
TALLOC_FREE(data);
*pstatus = NT_STATUS_NO_MEMORY;
return NULL;
}
pol->access_granted = access_granted;
*pstatus = NT_STATUS_OK;
return data;
}
struct pipes_struct *make_internal_rpc_pipe_p(TALLOC_CTX *mem_ctx,
const struct ndr_syntax_id *syntax,
const struct tsocket_address *remote_address,
const struct auth_session_info *session_info,
struct messaging_context *msg_ctx)
{
struct pipes_struct *p;
struct pipe_rpc_fns *context_fns;
const char *pipe_name;
int ret;
pipe_name = get_pipe_name_from_syntax(talloc_tos(), syntax);
DEBUG(4,("Create pipe requested %s\n", pipe_name));
ret = make_base_pipes_struct(mem_ctx, msg_ctx, pipe_name,
NCALRPC, RPC_LITTLE_ENDIAN, false,
remote_address, NULL, &p);
if (ret) {
DEBUG(0,("ERROR! no memory for pipes_struct!\n"));
return NULL;
}
if (!init_pipe_handles(p, syntax)) {
DEBUG(0,("open_rpc_pipe_p: init_pipe_handles failed.\n"));
TALLOC_FREE(p);
return NULL;
}
p->session_info = copy_session_info(p, session_info);
if (p->session_info == NULL) {
DEBUG(0, ("open_rpc_pipe_p: copy_serverinfo failed\n"));
close_policy_by_pipe(p);
TALLOC_FREE(p);
return NULL;
}
context_fns = talloc(p, struct pipe_rpc_fns);
if (context_fns == NULL) {
DEBUG(0,("talloc() failed!\n"));
TALLOC_FREE(p);
return NULL;
}
context_fns->next = context_fns->prev = NULL;
context_fns->n_cmds = rpc_srv_get_pipe_num_cmds(syntax);
context_fns->cmds = rpc_srv_get_pipe_cmds(syntax);
context_fns->context_id = 0;
context_fns->syntax = *syntax;
/* add to the list of open contexts */
DLIST_ADD(p->contexts, context_fns);
DEBUG(4,("Created internal pipe %s\n", pipe_name));
return p;
}
void close_policy_by_pipe(struct pipes_struct *p)
{
if (p->pipe_handles == NULL) {
return;
}
p->pipe_handles->pipe_ref_count--;
if (p->pipe_handles->pipe_ref_count == 0) {
/*
* Last pipe open on this list - free the list.
*/
TALLOC_FREE(p->pipe_handles);
DEBUG(10,("Deleted handle list for RPC connection %s\n",
get_pipe_name_from_syntax(talloc_tos(),
&p->contexts->syntax)));
}
}
void close_policy_by_pipe(pipes_struct *p)
{
p->pipe_handles->pipe_ref_count--;
if (p->pipe_handles->pipe_ref_count == 0) {
/*
* Last pipe open on this list - free the list.
*/
while (p->pipe_handles->Policy)
close_policy_hnd(p, &p->pipe_handles->Policy->pol_hnd);
p->pipe_handles->Policy = NULL;
p->pipe_handles->count = 0;
SAFE_FREE(p->pipe_handles);
DEBUG(10,("close_policy_by_pipe: deleted handle list for "
"pipe %s\n",
get_pipe_name_from_syntax(talloc_tos(), &p->syntax)));
}
}
struct pipes_struct *make_internal_rpc_pipe_p(TALLOC_CTX *mem_ctx,
const struct ndr_syntax_id *syntax,
const struct tsocket_address *remote_address,
const struct auth_serversupplied_info *session_info,
struct messaging_context *msg_ctx)
{
struct pipes_struct *p;
struct pipe_rpc_fns *context_fns;
DEBUG(4,("Create pipe requested %s\n",
get_pipe_name_from_syntax(talloc_tos(), syntax)));
p = talloc_zero(mem_ctx, struct pipes_struct);
if (!p) {
DEBUG(0,("ERROR! no memory for pipes_struct!\n"));
return NULL;
}
p->mem_ctx = talloc_named(p, 0, "pipe %s %p",
get_pipe_name_from_syntax(talloc_tos(),
syntax), p);
if (p->mem_ctx == NULL) {
DEBUG(0,("open_rpc_pipe_p: talloc_init failed.\n"));
TALLOC_FREE(p);
return NULL;
}
if (!init_pipe_handles(p, syntax)) {
DEBUG(0,("open_rpc_pipe_p: init_pipe_handles failed.\n"));
TALLOC_FREE(p);
return NULL;
}
p->session_info = copy_serverinfo(p, session_info);
if (p->session_info == NULL) {
DEBUG(0, ("open_rpc_pipe_p: copy_serverinfo failed\n"));
close_policy_by_pipe(p);
TALLOC_FREE(p);
return NULL;
}
p->msg_ctx = msg_ctx;
DLIST_ADD(InternalPipes, p);
p->remote_address = tsocket_address_copy(remote_address, p);
if (p->remote_address == NULL) {
return false;
}
p->endian = RPC_LITTLE_ENDIAN;
p->transport = NCALRPC;
context_fns = SMB_MALLOC_P(struct pipe_rpc_fns);
if (context_fns == NULL) {
DEBUG(0,("malloc() failed!\n"));
return False;
}
context_fns->next = context_fns->prev = NULL;
context_fns->n_cmds = rpc_srv_get_pipe_num_cmds(syntax);
context_fns->cmds = rpc_srv_get_pipe_cmds(syntax);
context_fns->context_id = 0;
context_fns->syntax = *syntax;
/* add to the list of open contexts */
DLIST_ADD(p->contexts, context_fns);
DEBUG(4,("Created internal pipe %s\n",
get_pipe_name_from_syntax(talloc_tos(), syntax)));
talloc_set_destructor(p, close_internal_rpc_pipe_hnd);
return p;
}
static ssize_t read_from_internal_pipe(struct pipes_struct *p, char *data,
size_t n, bool *is_data_outstanding)
{
uint32 pdu_remaining = 0;
ssize_t data_returned = 0;
if (!p) {
DEBUG(0,("read_from_pipe: pipe not open\n"));
return -1;
}
DEBUG(6,(" name: %s len: %u\n",
get_pipe_name_from_syntax(talloc_tos(), &p->syntax),
(unsigned int)n));
/*
* We cannot return more than one PDU length per
* read request.
*/
/*
* This condition should result in the connection being closed.
* Netapp filers seem to set it to 0xffff which results in domain
* authentications failing. Just ignore it so things work.
*/
if(n > RPC_MAX_PDU_FRAG_LEN) {
DEBUG(5,("read_from_pipe: too large read (%u) requested on "
"pipe %s. We can only service %d sized reads.\n",
(unsigned int)n,
get_pipe_name_from_syntax(talloc_tos(), &p->syntax),
RPC_MAX_PDU_FRAG_LEN ));
n = RPC_MAX_PDU_FRAG_LEN;
}
/*
* Determine if there is still data to send in the
* pipe PDU buffer. Always send this first. Never
* send more than is left in the current PDU. The
* client should send a new read request for a new
* PDU.
*/
pdu_remaining = p->out_data.frag.length
- p->out_data.current_pdu_sent;
if (pdu_remaining > 0) {
data_returned = (ssize_t)MIN(n, pdu_remaining);
DEBUG(10,("read_from_pipe: %s: current_pdu_len = %u, "
"current_pdu_sent = %u returning %d bytes.\n",
get_pipe_name_from_syntax(talloc_tos(), &p->syntax),
(unsigned int)p->out_data.frag.length,
(unsigned int)p->out_data.current_pdu_sent,
(int)data_returned));
memcpy(data,
p->out_data.frag.data
+ p->out_data.current_pdu_sent,
data_returned);
p->out_data.current_pdu_sent += (uint32)data_returned;
goto out;
}
/*
* At this point p->current_pdu_len == p->current_pdu_sent (which
* may of course be zero if this is the first return fragment.
*/
DEBUG(10,("read_from_pipe: %s: fault_state = %d : data_sent_length "
"= %u, p->out_data.rdata.length = %u.\n",
get_pipe_name_from_syntax(talloc_tos(), &p->syntax),
(int)p->fault_state,
(unsigned int)p->out_data.data_sent_length,
(unsigned int)p->out_data.rdata.length));
if (p->out_data.data_sent_length >= p->out_data.rdata.length) {
/*
* We have sent all possible data, return 0.
*/
data_returned = 0;
goto out;
}
/*
* We need to create a new PDU from the data left in p->rdata.
* Create the header/data/footers. This also sets up the fields
* p->current_pdu_len, p->current_pdu_sent, p->data_sent_length
* and stores the outgoing PDU in p->current_pdu.
*/
if(!create_next_pdu(p)) {
DEBUG(0,("read_from_pipe: %s: create_next_pdu failed.\n",
get_pipe_name_from_syntax(talloc_tos(), &p->syntax)));
return -1;
}
data_returned = MIN(n, p->out_data.frag.length);
memcpy(data, p->out_data.frag.data, (size_t)data_returned);
p->out_data.current_pdu_sent += (uint32)data_returned;
out:
(*is_data_outstanding) = p->out_data.frag.length > n;
if (p->out_data.current_pdu_sent == p->out_data.frag.length) {
/* We've returned everything in the out_data.frag
* so we're done with this pdu. Free it and reset
* current_pdu_sent. */
p->out_data.current_pdu_sent = 0;
data_blob_free(&p->out_data.frag);
if (p->out_data.data_sent_length >= p->out_data.rdata.length) {
/*
* We're completely finished with both outgoing and
* incoming data streams. It's safe to free all
* temporary data from this request.
*/
free_pipe_context(p);
}
}
return data_returned;
}
bool init_pipe_handles(struct pipes_struct *p, const struct ndr_syntax_id *syntax)
{
struct pipes_struct *plist;
struct handle_list *hl;
for (plist = InternalPipes; plist; plist = plist->next) {
struct pipe_rpc_fns *p_ctx;
bool stop = false;
for (p_ctx = plist->contexts;
p_ctx != NULL;
p_ctx = p_ctx->next) {
if (ndr_syntax_id_equal(syntax, &p_ctx->syntax)) {
stop = true;
break;
}
if (is_samr_lsa_pipe(&p_ctx->syntax)
&& is_samr_lsa_pipe(syntax)) {
/*
* samr and lsa share a handle space (same process
* under Windows?)
*/
stop = true;
break;
}
}
if (stop) {
break;
}
}
if (plist != NULL) {
hl = plist->pipe_handles;
if (hl == NULL) {
return false;
}
} else {
/*
* First open, we have to create the handle list
*/
hl = talloc_zero(NULL, struct handle_list);
if (hl == NULL) {
return false;
}
DEBUG(10,("init_pipe_handle_list: created handle list for "
"pipe %s\n",
get_pipe_name_from_syntax(talloc_tos(), syntax)));
}
/*
* One more pipe is using this list.
*/
hl->pipe_ref_count++;
/*
* Point this pipe at this list.
*/
p->pipe_handles = hl;
DEBUG(10,("init_pipe_handle_list: pipe_handles ref count = %lu for "
"pipe %s\n", (unsigned long)p->pipe_handles->pipe_ref_count,
get_pipe_name_from_syntax(talloc_tos(), syntax)));
return True;
}
