/*
- * Unix SMB/Netbios implementation.
- * Version 1.9.
+ * Unix SMB/CIFS implementation.
* RPC Pipe client / server routines
* Copyright (C) Andrew Tridgell 1992-1998,
* Copyright (C) Luke Kenneth Casson Leighton 1996-1998,
#include "includes.h"
+#undef DBGC_CLASS
+#define DBGC_CLASS DBGC_RPC_SRV
+
#define PIPE "\\PIPE\\"
#define PIPELEN strlen(PIPE)
-static pipes_struct *chain_p;
+static smb_np_struct *chain_p;
static int pipes_open;
-#ifndef MAX_OPEN_PIPES
-#define MAX_OPEN_PIPES 1024
+/*
+ * Sometimes I can't decide if I hate Windows printer driver
+ * writers more than I hate the Windows spooler service driver
+ * writers. This gets around a combination of bugs in the spooler
+ * and the HP 8500 PCL driver that causes a spooler spin. JRA.
+ *
+ * bumped up from 20 -> 64 after viewing traffic from WordPerfect
+ * 2002 running on NT 4.- SP6
+ * bumped up from 64 -> 256 after viewing traffic from con2prt
+ * for lots of printers on a WinNT 4.x SP6 box.
+ */
+
+#ifndef MAX_OPEN_SPOOLSS_PIPES
+#define MAX_OPEN_SPOOLSS_PIPES 256
#endif
+static int current_spoolss_pipes_open;
-static pipes_struct *Pipes;
+static smb_np_struct *Pipes;
+static pipes_struct *InternalPipes;
static struct bitmap *bmap;
+/* TODO
+ * the following prototypes are declared here to avoid
+ * code being moved about too much for a patch to be
+ * disrupted / less obvious.
+ *
+ * these functions, and associated functions that they
+ * call, should be moved behind a .so module-loading
+ * system _anyway_. so that's the next step...
+ */
+
+static ssize_t read_from_internal_pipe(void *np_conn, char *data, size_t n,
+ BOOL *is_data_outstanding);
+static ssize_t write_to_internal_pipe(void *np_conn, char *data, size_t n);
+static BOOL close_internal_rpc_pipe_hnd(void *np_conn);
+static void *make_internal_rpc_pipe_p(char *pipe_name,
+ connection_struct *conn, uint16 vuid);
+
/****************************************************************************
Pipe iterator functions.
****************************************************************************/
-pipes_struct *get_first_pipe(void)
+smb_np_struct *get_first_pipe(void)
{
return Pipes;
}
-pipes_struct *get_next_pipe(pipes_struct *p)
+smb_np_struct *get_next_pipe(smb_np_struct *p)
+{
+ return p->next;
+}
+
+/****************************************************************************
+ Internal Pipe iterator functions.
+****************************************************************************/
+
+pipes_struct *get_first_internal_pipe(void)
+{
+ return InternalPipes;
+}
+
+pipes_struct *get_next_internal_pipe(pipes_struct *p)
{
return p->next;
}
/****************************************************************************
Reset pipe chain handle number.
****************************************************************************/
+
void reset_chain_p(void)
{
chain_p = NULL;
{
bmap = bitmap_allocate(MAX_OPEN_PIPES);
if (!bmap)
- exit_server("out of memory in init_rpc_pipe_hnd\n");
+ exit_server("out of memory in init_rpc_pipe_hnd");
}
/****************************************************************************
Find first available pipe slot.
****************************************************************************/
-pipes_struct *open_rpc_pipe_p(char *pipe_name,
+smb_np_struct *open_rpc_pipe_p(char *pipe_name,
connection_struct *conn, uint16 vuid)
{
int i;
- pipes_struct *p;
+ smb_np_struct *p, *p_it;
static int next_pipe;
+ BOOL is_spoolss_pipe = False;
DEBUG(4,("Open pipe requested %s (pipes_open=%d)\n",
pipe_name, pipes_open));
-
+ if (strstr(pipe_name, "spoolss"))
+ is_spoolss_pipe = True;
+
+ if (is_spoolss_pipe && current_spoolss_pipes_open >= MAX_OPEN_SPOOLSS_PIPES) {
+ DEBUG(10,("open_rpc_pipe_p: spooler bug workaround. Denying open on pipe %s\n",
+ pipe_name ));
+ return NULL;
+ }
+
/* not repeating pipe numbers makes it easier to track things in
log files and prevents client bugs where pipe numbers are reused
over connection restarts */
for (p = Pipes; p; p = p->next)
DEBUG(5,("open_rpc_pipe_p: name %s pnum=%x\n", p->name, p->pnum));
+ p = (smb_np_struct *)malloc(sizeof(*p));
+
+ if (!p) {
+ DEBUG(0,("ERROR! no memory for pipes_struct!\n"));
+ return NULL;
+ }
+
+ ZERO_STRUCTP(p);
+
+ /* add a dso mechanism instead of this, here */
+
+ p->namedpipe_create = make_internal_rpc_pipe_p;
+ p->namedpipe_read = read_from_internal_pipe;
+ p->namedpipe_write = write_to_internal_pipe;
+ p->namedpipe_close = close_internal_rpc_pipe_hnd;
+
+ p->np_state = p->namedpipe_create(pipe_name, conn, vuid);
+
+ if (p->np_state == NULL) {
+ DEBUG(0,("open_rpc_pipe_p: make_internal_rpc_pipe_p failed.\n"));
+ SAFE_FREE(p);
+ return NULL;
+ }
+
+ DLIST_ADD(Pipes, p);
+
+ /*
+ * Initialize the incoming RPC data buffer with one PDU worth of memory.
+ * We cheat here and say we're marshalling, as we intend to add incoming
+ * data directly into the prs_struct and we want it to auto grow. We will
+ * change the type to UNMARSALLING before processing the stream.
+ */
+
+ bitmap_set(bmap, i);
+ i += pipe_handle_offset;
+
+ pipes_open++;
+
+ p->pnum = i;
+
+ p->open = True;
+ p->device_state = 0;
+ p->priority = 0;
+ p->conn = conn;
+ p->vuid = vuid;
+
+ p->max_trans_reply = 0;
+
+ fstrcpy(p->name, pipe_name);
+
+ DEBUG(4,("Opened pipe %s with handle %x (pipes_open=%d)\n",
+ pipe_name, i, pipes_open));
+
+ chain_p = p;
+
+ /* Iterate over p_it as a temp variable, to display all open pipes */
+ for (p_it = Pipes; p_it; p_it = p_it->next)
+ DEBUG(5,("open pipes: name %s pnum=%x\n", p_it->name, p_it->pnum));
+
+ return chain_p;
+}
+
+/****************************************************************************
+ Make an internal namedpipes structure
+****************************************************************************/
+
+static void *make_internal_rpc_pipe_p(char *pipe_name,
+ connection_struct *conn, uint16 vuid)
+{
+ pipes_struct *p;
+ user_struct *vuser = get_valid_user_struct(vuid);
+
+ DEBUG(4,("Create pipe requested %s\n", pipe_name));
+
+ if (!vuser && vuid != UID_FIELD_INVALID) {
+ DEBUG(0,("ERROR! vuid %d did not map to a valid vuser struct!\n", vuid));
+ return NULL;
+ }
+
p = (pipes_struct *)malloc(sizeof(*p));
if (!p)
+ {
+ DEBUG(0,("ERROR! no memory for pipes_struct!\n"));
return NULL;
+ }
ZERO_STRUCTP(p);
- if ((p->mem_ctx = talloc_init()) == NULL) {
+ if ((p->mem_ctx = talloc_init("pipe %s %p", pipe_name, p)) == NULL) {
DEBUG(0,("open_rpc_pipe_p: talloc_init failed.\n"));
SAFE_FREE(p);
return NULL;
return NULL;
}
-
- DLIST_ADD(Pipes, p);
-
/*
* Initialize the incoming RPC data buffer with one PDU worth of memory.
* We cheat here and say we're marshalling, as we intend to add incoming
return NULL;
}
- bitmap_set(bmap, i);
- i += pipe_handle_offset;
+ DLIST_ADD(InternalPipes, p);
- pipes_open++;
+ p->conn = conn;
- p->pnum = i;
+ /* Ensure the connection isn't idled whilst this pipe is open. */
+ p->conn->num_files_open++;
- p->open = True;
- p->device_state = 0;
- p->priority = 0;
- p->conn = conn;
p->vuid = vuid;
- p->max_trans_reply = 0;
-
p->ntlmssp_chal_flags = 0;
p->ntlmssp_auth_validated = False;
p->ntlmssp_auth_requested = False;
p->fault_state = False;
p->endian = RPC_LITTLE_ENDIAN;
+ ZERO_STRUCT(p->pipe_user);
+
+ p->pipe_user.uid = (uid_t)-1;
+ p->pipe_user.gid = (gid_t)-1;
+
+ /* Store the session key and NT_TOKEN */
+ if (vuser) {
+ memcpy(p->session_key, vuser->session_key, sizeof(p->session_key));
+ p->pipe_user.nt_user_token = dup_nt_token(vuser->nt_user_token);
+ }
+
/*
* Initialize the incoming RPC struct.
*/
*/
prs_init(&p->out_data.rdata, 0, p->mem_ctx, MARSHALL);
- ZERO_STRUCT(p->pipe_user);
-
- p->pipe_user.uid = (uid_t)-1;
- p->pipe_user.gid = (gid_t)-1;
-
fstrcpy(p->name, pipe_name);
- DEBUG(4,("Opened pipe %s with handle %x (pipes_open=%d)\n",
- pipe_name, i, pipes_open));
-
- chain_p = p;
-
- /* OVERWRITE p as a temp variable, to display all open pipes */
- for (p = Pipes; p; p = p->next)
- DEBUG(5,("open pipes: name %s pnum=%x\n", p->name, p->pnum));
+ DEBUG(4,("Created internal pipe %s (pipes_open=%d)\n",
+ pipe_name, pipes_open));
- return chain_p;
+ return (void*)p;
}
/****************************************************************************
p->in_data.pdu_needed_len = 0;
p->in_data.pdu_received_len = 0;
p->fault_state = True;
- DEBUG(10,("set_incoming_fault: Setting fault state on pipe %s : pnum = 0x%x\n",
- p->name, p->pnum ));
+ DEBUG(10,("set_incoming_fault: Setting fault state on pipe %s : vuid = 0x%x\n",
+ p->name, p->vuid ));
}
/****************************************************************************
DEBUG(3,("free_pipe_context: destroying talloc pool of size %u\n", talloc_pool_size(p->mem_ctx) ));
talloc_destroy_pool(p->mem_ctx);
} else {
- p->mem_ctx = talloc_init();
+ p->mem_ctx = talloc_init("pipe %s %p", p->name, p);
if (p->mem_ctx == NULL)
p->fault_state = True;
}
* Authentication _was_ requested and it already failed.
*/
- DEBUG(0,("process_request_pdu: RPC request received on pipe %s where \
-authentication failed. Denying the request.\n", p->name));
+ DEBUG(0,("process_request_pdu: RPC request received on pipe %s "
+ "where authentication failed. Denying the request.\n",
+ p->name));
set_incoming_fault(p);
- return False;
- }
+ return False;
+ }
+
+ if (p->netsec_auth_validated && !api_pipe_netsec_process(p, rpc_in_p)) {
+ DEBUG(0,("process_request_pdu: failed to do schannel processing.\n"));
+ set_incoming_fault(p);
+ return False;
+ }
/*
- * Check the data length doesn't go over the 10Mb limit.
+ * Check the data length doesn't go over the 15Mb limit.
+ * increased after observing a bug in the Windows NT 4.0 SP6a
+ * spoolsv.exe when the response to a GETPRINTERDRIVER2 RPC
+ * will not fit in the initial buffer of size 0x1068 --jerry 22/01/2002
*/
- if(prs_data_size(&p->in_data.data) + data_len > 10*1024*1024) {
+ if(prs_offset(&p->in_data.data) + data_len > 15*1024*1024) {
DEBUG(0,("process_request_pdu: rpc data buffer too large (%u) + (%u)\n",
(unsigned int)prs_data_size(&p->in_data.data), (unsigned int)data_len ));
set_incoming_fault(p);
* Append the data portion into the buffer and return.
*/
- {
- char *data_from = prs_data_p(rpc_in_p) + prs_offset(rpc_in_p);
-
- if(!prs_append_data(&p->in_data.data, data_from, data_len)) {
- DEBUG(0,("process_request_pdu: Unable to append data size %u to parse buffer of size %u.\n",
- (unsigned int)data_len, (unsigned int)prs_data_size(&p->in_data.data) ));
- set_incoming_fault(p);
- return False;
- }
-
+ if(!prs_append_some_prs_data(&p->in_data.data, rpc_in_p, prs_offset(rpc_in_p), data_len)) {
+ DEBUG(0,("process_request_pdu: Unable to append data size %u to parse buffer of size %u.\n",
+ (unsigned int)data_len, (unsigned int)prs_data_size(&p->in_data.data) ));
+ set_incoming_fault(p);
+ return False;
}
if(p->hdr.flags & RPC_FLG_LAST) {
Accepts incoming data on an rpc pipe.
****************************************************************************/
-ssize_t write_to_pipe(pipes_struct *p, char *data, size_t n)
+ssize_t write_to_pipe(smb_np_struct *p, char *data, size_t n)
{
- size_t data_left = n;
-
DEBUG(6,("write_to_pipe: %x", p->pnum));
DEBUG(6,(" name: %s open: %s len: %d\n",
dump_data(50, data, n);
+ return p->namedpipe_write(p->np_state, data, n);
+}
+
+/****************************************************************************
+ Accepts incoming data on an internal rpc pipe.
+****************************************************************************/
+
+static ssize_t write_to_internal_pipe(void *np_conn, char *data, size_t n)
+{
+ pipes_struct *p = (pipes_struct*)np_conn;
+ size_t data_left = n;
+
while(data_left) {
ssize_t data_used;
have been prepared into arrays of headers + data stream sections.
****************************************************************************/
-ssize_t read_from_pipe(pipes_struct *p, char *data, size_t n)
+ssize_t read_from_pipe(smb_np_struct *p, char *data, size_t n,
+ BOOL *is_data_outstanding)
{
- uint32 pdu_remaining = 0;
- ssize_t data_returned = 0;
-
if (!p || !p->open) {
DEBUG(0,("read_from_pipe: pipe not open\n"));
return -1;
DEBUG(6,("read_from_pipe: %x", p->pnum));
+ return p->namedpipe_read(p->np_state, data, n, is_data_outstanding);
+}
+
+/****************************************************************************
+ Replies to a request to read data from a pipe.
+
+ Headers are interspersed with the data at PDU intervals. By the time
+ this function is called, the start of the data could possibly have been
+ read by an SMBtrans (file_offset != 0).
+
+ Calling create_rpc_reply() here is a hack. The data should already
+ have been prepared into arrays of headers + data stream sections.
+****************************************************************************/
+
+static ssize_t read_from_internal_pipe(void *np_conn, char *data, size_t n,
+ BOOL *is_data_outstanding)
+{
+ pipes_struct *p = (pipes_struct*)np_conn;
+ 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", p->name, (unsigned int)n));
/*
out:
+ (*is_data_outstanding) = p->out_data.current_pdu_len > n;
return data_returned;
}
Wait device state on a pipe. Exactly what this is for is unknown...
****************************************************************************/
-BOOL wait_rpc_pipe_hnd_state(pipes_struct *p, uint16 priority)
+BOOL wait_rpc_pipe_hnd_state(smb_np_struct *p, uint16 priority)
{
if (p == NULL)
return False;
Set device state on a pipe. Exactly what this is for is unknown...
****************************************************************************/
-BOOL set_rpc_pipe_hnd_state(pipes_struct *p, uint16 device_state)
+BOOL set_rpc_pipe_hnd_state(smb_np_struct *p, uint16 device_state)
{
if (p == NULL)
return False;
Close an rpc pipe.
****************************************************************************/
-BOOL close_rpc_pipe_hnd(pipes_struct *p, connection_struct *conn)
+BOOL close_rpc_pipe_hnd(smb_np_struct *p)
{
if (!p) {
DEBUG(0,("Invalid pipe in close_rpc_pipe_hnd\n"));
return False;
}
- prs_mem_free(&p->out_data.rdata);
- prs_mem_free(&p->in_data.data);
-
- if (p->mem_ctx)
- talloc_destroy(p->mem_ctx);
-
- /* Free the handles database. */
- close_policy_by_pipe(p);
+ p->namedpipe_close(p->np_state);
bitmap_clear(bmap, p->pnum - pipe_handle_offset);
DLIST_REMOVE(Pipes, p);
+ ZERO_STRUCTP(p);
+
+ SAFE_FREE(p);
+
+ return True;
+}
+
+/****************************************************************************
+ Close an rpc pipe.
+****************************************************************************/
+
+static BOOL close_internal_rpc_pipe_hnd(void *np_conn)
+{
+ pipes_struct *p = (pipes_struct *)np_conn;
+ if (!p) {
+ DEBUG(0,("Invalid pipe in close_internal_rpc_pipe_hnd\n"));
+ return False;
+ }
+
+ prs_mem_free(&p->out_data.rdata);
+ prs_mem_free(&p->in_data.data);
+
+ if (p->mem_ctx)
+ talloc_destroy(p->mem_ctx);
+
+ /* Free the handles database. */
+ close_policy_by_pipe(p);
+
delete_nt_token(&p->pipe_user.nt_user_token);
SAFE_FREE(p->pipe_user.groups);
+ DLIST_REMOVE(InternalPipes, p);
+
+ p->conn->num_files_open--;
+
ZERO_STRUCTP(p);
SAFE_FREE(p);
Find an rpc pipe given a pipe handle in a buffer and an offset.
****************************************************************************/
-pipes_struct *get_rpc_pipe_p(char *buf, int where)
+smb_np_struct *get_rpc_pipe_p(char *buf, int where)
{
int pnum = SVAL(buf,where);
Find an rpc pipe given a pipe handle.
****************************************************************************/
-pipes_struct *get_rpc_pipe(int pnum)
+smb_np_struct *get_rpc_pipe(int pnum)
{
- pipes_struct *p;
+ smb_np_struct *p;
DEBUG(4,("search for pipe pnum=%x\n", pnum));
git.samba.org / amitay / samba.git / blobdiff