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Diffstat (limited to 'source3/smbd/nttrans.c')
-rw-r--r--source3/smbd/nttrans.c304
1 files changed, 285 insertions, 19 deletions
diff --git a/source3/smbd/nttrans.c b/source3/smbd/nttrans.c
index d845076f36..4ee271cd6b 100644
--- a/source3/smbd/nttrans.c
+++ b/source3/smbd/nttrans.c
@@ -657,6 +657,9 @@ int reply_ntcreate_and_X(char *inbuf,char *outbuf,int length,int bufsize)
chain_fnum = fnum;
+ DEBUG(5,("reply_ntcreate_and_X: open fnum = %d, name = %s\n",
+ fnum, fsp->name ));
+
return chain_reply(inbuf,outbuf,length,bufsize);
}
@@ -737,12 +740,14 @@ static int call_nt_transact_create(char *inbuf, char *outbuf, int length,
return(ERROR(ERRSRV,ERRnofids));
}
+ fsp = &Files[fnum];
+
if (!check_name(fname,cnum)) {
if((errno == ENOENT) && bad_path) {
unix_ERR_class = ERRDOS;
unix_ERR_code = ERRbadpath;
}
- Files[fnum].reserved = False;
+ fsp->reserved = False;
restore_case_semantics(file_attributes);
@@ -783,14 +788,12 @@ static int call_nt_transact_create(char *inbuf, char *outbuf, int length,
open_file_shared(fnum,cnum,fname,smb_open_mode,smb_ofun,unixmode,
oplock_request,&rmode,&smb_action);
- fsp = &Files[fnum];
-
if (!fsp->open) {
if((errno == ENOENT) && bad_path) {
unix_ERR_class = ERRDOS;
unix_ERR_code = ERRbadpath;
}
- Files[fnum].reserved = False;
+ fsp->reserved = False;
restore_case_semantics(file_attributes);
@@ -887,12 +890,22 @@ static int call_nt_transact_create(char *inbuf, char *outbuf, int length,
}
/****************************************************************************
- Reply to a NT CANCEL request - just ignore it.
+ Reply to a NT CANCEL request.
****************************************************************************/
int reply_ntcancel(char *inbuf,char *outbuf,int length,int bufsize)
{
- DEBUG(4,("Ignoring ntcancel of length %d\n",length));
+ /*
+ * Go through and cancel any pending change notifies.
+ * TODO: When we add blocking locks we will add cancel
+ * for them here too.
+ */
+
+ int mid = SVAL(inbuf,smb_mid);
+ remove_pending_change_notify_requests_by_mid(mid);
+
+ DEBUG(3,("reply_ntcancel: cancel called on mid = %d.\n", mid));
+
return(-1);
}
@@ -933,6 +946,10 @@ static int call_nt_transact_rename(char *inbuf, char *outbuf, int length,
* Rename was successful.
*/
send_nt_replies(outbuf, bufsize, NULL, 0, NULL, 0);
+
+ DEBUG(3,("nt transact rename from = %s, to = %s succeeded.\n",
+ Files[fnum].name, new_name));
+
outsize = -1;
}
@@ -940,7 +957,175 @@ static int call_nt_transact_rename(char *inbuf, char *outbuf, int length,
}
/****************************************************************************
- Reply to a notify change - we should never get this (for now) as we
+ This is the structure to queue to implement NT change
+ notify. It consists of smb_size bytes stored from the
+ transact command (to keep the mid, tid etc around).
+ Plus the fid to examine and the time to check next.
+*****************************************************************************/
+
+typedef struct {
+ ubi_slNode msg_next;
+ int fnum;
+ int cnum;
+ time_t next_check_time;
+ char request_buf[smb_size];
+} change_notify_buf;
+
+static ubi_slList change_notify_queue = { NULL, (ubi_slNodePtr)&change_notify_queue, 0};
+
+/****************************************************************************
+ Setup the common parts of the return packet and send it.
+ Code stolen from construct_reply() in server.c
+*****************************************************************************/
+
+static void change_notify_reply_packet(char *inbuf, int error_class, uint32 error_code)
+{
+ extern int Client;
+ char outbuf[smb_size];
+
+ bzero(outbuf,smb_size);
+
+ CVAL(outbuf,smb_com) = CVAL(inbuf,smb_com);
+ set_message(outbuf,0,0,True);
+
+ memcpy(outbuf+4,inbuf+4,4);
+ CVAL(outbuf,smb_rcls) = SMB_SUCCESS;
+ CVAL(outbuf,smb_reh) = 0;
+ CVAL(outbuf,smb_flg) = 0x80 | (CVAL(inbuf,smb_flg) & 0x8); /* bit 7 set
+ means a reply */
+ SSVAL(outbuf,smb_flg2,1); /* say we support long filenames */
+ SSVAL(outbuf,smb_err,SMB_SUCCESS);
+ SSVAL(outbuf,smb_tid,SVAL(inbuf,smb_tid));
+ SSVAL(outbuf,smb_pid,SVAL(inbuf,smb_pid));
+ SSVAL(outbuf,smb_uid,SVAL(inbuf,smb_uid));
+ SSVAL(outbuf,smb_mid,SVAL(inbuf,smb_mid));
+
+ ERROR(error_class,error_code);
+ send_smb(Client,outbuf);
+}
+
+/****************************************************************************
+ Delete entries by fnum from the change notify pending queue.
+*****************************************************************************/
+
+void remove_pending_change_notify_requests_by_fid(int fnum)
+{
+ change_notify_buf *cnbp = (change_notify_buf *)ubi_slFirst( &change_notify_queue );
+ change_notify_buf *prev = NULL;
+
+ while(cnbp != NULL) {
+ if(cnbp->fnum == fnum) {
+ ubi_slRemNext( &change_notify_queue, prev);
+ cnbp = (change_notify_buf *)(prev ? ubi_slNext(prev) : ubi_slFirst(&change_notify_queue));
+ continue;
+ }
+
+ prev = cnbp;
+ cnbp = (change_notify_buf *)ubi_slNext(cnbp);
+ }
+}
+
+/****************************************************************************
+ Delete entries by mid from the change notify pending queue. Always send reply.
+*****************************************************************************/
+
+void remove_pending_change_notify_requests_by_mid(int mid)
+{
+ change_notify_buf *cnbp = (change_notify_buf *)ubi_slFirst( &change_notify_queue );
+ change_notify_buf *prev = NULL;
+
+ while(cnbp != NULL) {
+ if(SVAL(cnbp->request_buf,smb_mid) == mid) {
+ change_notify_reply_packet(cnbp->request_buf,ERRSRV,ERRaccess);
+ ubi_slRemNext( &change_notify_queue, prev);
+ cnbp = (change_notify_buf *)(prev ? ubi_slNext(prev) : ubi_slFirst(&change_notify_queue));
+ continue;
+ }
+
+ prev = cnbp;
+ cnbp = (change_notify_buf *)ubi_slNext(cnbp);
+ }
+}
+
+/****************************************************************************
+ Process the change notify queue. Note that this is only called as root.
+*****************************************************************************/
+
+void process_pending_change_notify_queue(time_t t)
+{
+ change_notify_buf *cnbp = (change_notify_buf *)ubi_slFirst( &change_notify_queue );
+ change_notify_buf *prev = NULL;
+
+ if(cnbp == NULL)
+ return;
+
+ if(cnbp->next_check_time >= t)
+ return;
+
+ /*
+ * It's time to check. Go through the queue and see if
+ * the timestamps changed.
+ */
+
+ while((cnbp != NULL) && (cnbp->next_check_time <= t)) {
+ struct stat st;
+ int fnum = cnbp->fnum;
+ int cnum = cnbp->cnum;
+ files_struct *fsp = &Files[fnum];
+ uint16 vuid = (lp_security() == SEC_SHARE) ? UID_FIELD_INVALID :
+ SVAL(cnbp->request_buf,smb_uid);
+
+ if(!become_user(&Connections[cnum],cnum,vuid)) {
+ DEBUG(0,("process_pending_change_notify_queue: Unable to become user vuid=%d.\n",
+ vuid ));
+ /*
+ * Remove the entry and return an error to the client.
+ */
+ change_notify_reply_packet(cnbp->request_buf,ERRSRV,ERRaccess);
+ ubi_slRemNext( &change_notify_queue, prev);
+ cnbp = (change_notify_buf *)(prev ? ubi_slNext(prev) : ubi_slFirst(&change_notify_queue));
+ continue;
+ }
+
+ if(sys_stat(fsp->name, &st) < 0) {
+ DEBUG(0,("process_pending_change_notify_queue: Unable to stat directory %s. \
+Error was %s.\n", fsp->name, strerror(errno) ));
+ /*
+ * Remove the entry and return an error to the client.
+ */
+ change_notify_reply_packet(cnbp->request_buf,ERRSRV,ERRaccess);
+ ubi_slRemNext( &change_notify_queue, prev);
+ cnbp = (change_notify_buf *)(prev ? ubi_slNext(prev) : ubi_slFirst(&change_notify_queue));
+ unbecome_user();
+ continue;
+ }
+
+ if(fsp->f_u.dir_ptr->modify_time != st.st_mtime ||
+ fsp->f_u.dir_ptr->status_time != st.st_ctime) {
+ /*
+ * Remove the entry and return a change notify to the client.
+ */
+ DEBUG(5,("process_pending_change_notify_queue: directory fnum = %d, name = %s changed\n",
+ fnum, fsp->name ));
+ change_notify_reply_packet(cnbp->request_buf,ERRDOS,ERROR_NOTIFY_ENUM_DIR);
+ ubi_slRemNext( &change_notify_queue, prev);
+ cnbp = (change_notify_buf *)(prev ? ubi_slNext(prev) : ubi_slFirst(&change_notify_queue));
+ unbecome_user();
+ continue;
+ }
+
+ unbecome_user();
+
+ /*
+ * Move to the next in the list.
+ */
+ prev = cnbp;
+ cnbp = (change_notify_buf *)ubi_slNext(cnbp);
+ }
+}
+
+/****************************************************************************
+ Reply to a notify change - queue the request and
don't allow a directory to be opened.
****************************************************************************/
@@ -948,10 +1133,83 @@ static int call_nt_transact_notify_change(char *inbuf, char *outbuf, int length,
int bufsize, int cnum,
char **ppsetup, char **ppparams, char **ppdata)
{
+#if 0
DEBUG(0,("call_nt_transact_notify_change: Should not be called !\n"));
return(ERROR(ERRSRV,ERRnosupport));
+#else /* Under development. */
+ char *setup = *ppsetup;
+ files_struct *fsp;
+ int fnum = -1;
+ change_notify_buf *cnbp;
+ struct stat st;
+
+ fnum = SVAL(setup,4);
+
+ DEBUG(0,("call_nt_transact_notify_change: fnum = %d.\n", fnum));
+
+ if(!VALID_FNUM(fnum))
+ return(ERROR(ERRDOS,ERRbadfid));
+
+ fsp = &Files[fnum];
+
+ if((!fsp->open) || (!fsp->is_directory) || (cnum != fsp->cnum))
+ return(ERROR(ERRDOS,ERRbadfid));
+
+ /*
+ * Setup the current directory information in the
+ * directory entry in the files_struct. We will use
+ * this to check against when the timer expires.
+ */
+
+ if(sys_stat(fsp->name, &st) < 0) {
+ DEBUG(0,("call_nt_transact_notify_change: Unable to stat fnum = %d, name = %s. \
+ Error was %s\n", fnum, fsp->name, strerror(errno) ));
+ return -1;
+ }
+
+ if(fsp->f_u.dir_ptr == NULL) {
+ if((fsp->f_u.dir_ptr = (dir_status_struct *)malloc(sizeof(dir_status_struct))) == NULL) {
+ DEBUG(0,("call_nt_transact_notify_change: Malloc fail !\n" ));
+ return -1;
+ }
+ }
+
+ fsp->f_u.dir_ptr->modify_time = st.st_mtime;
+ fsp->f_u.dir_ptr->status_time = st.st_ctime;
+
+ /*
+ * Now queue an entry on the notify change stack. We timestamp
+ * the entry we are adding so that we know when to scan next.
+ * We only need to save smb_size bytes from this incoming packet
+ * as we will always by returning a 'read the directory yourself'
+ * error.
+ */
+
+ if((cnbp = (change_notify_buf *)malloc(sizeof(change_notify_buf))) == NULL) {
+ DEBUG(0,("call_nt_transact_notify_change: Malloc fail (2) !\n" ));
+ return -1;
+ }
+
+ memcpy(cnbp->request_buf, inbuf, smb_size);
+ cnbp->fnum = fnum;
+ cnbp->cnum = cnum;
+ cnbp->next_check_time = time(NULL) + lp_change_notify_timeout();
+
+ /*
+ * Adding to the tail enables us to check only
+ * the head when scanning for change, as this entry
+ * is forced to have the first timeout expiration.
+ */
+
+ ubi_slAddTail(&change_notify_queue, cnbp);
+
+ DEBUG(3,("call_nt_transact_notify_change: notify change called on directory fid=%d, name = %s\n",
+ fnum, fsp->name ));
+
+ return -1;
+#endif
}
-
+
/****************************************************************************
Reply to query a security descriptor - currently this is not implemented (it
is planned to be though).
@@ -996,7 +1254,7 @@ static int call_nt_transact_ioctl(char *inbuf, char *outbuf, int length,
int reply_nttrans(char *inbuf,char *outbuf,int length,int bufsize)
{
- int outsize = 0;
+ int outsize = 0;
int cnum = SVAL(inbuf,smb_tid);
#if 0 /* Not used. */
uint16 max_setup_count = CVAL(inbuf, smb_nt_MaxSetupCount);
@@ -1009,7 +1267,7 @@ int reply_nttrans(char *inbuf,char *outbuf,int length,int bufsize)
uint32 parameter_offset = IVAL(inbuf,smb_nt_ParameterOffset);
uint32 data_count = IVAL(inbuf,smb_nt_DataCount);
uint32 data_offset = IVAL(inbuf,smb_nt_DataOffset);
- uint16 setup_count = CVAL(inbuf,smb_nt_SetupCount);
+ uint16 setup_count = 2*CVAL(inbuf,smb_nt_SetupCount); /* setup count is in *words* */
uint16 function_code = SVAL( inbuf, smb_nt_Function);
char *params = NULL, *data = NULL, *setup = NULL;
uint32 num_params_sofar, num_data_sofar;
@@ -1019,8 +1277,8 @@ int reply_nttrans(char *inbuf,char *outbuf,int length,int bufsize)
* Queue this open message as we are the process of an oplock break.
*/
- DEBUG( 2, ( "reply_nttrans: queueing message NT_TRANSACT_CREATE " ) );
- DEBUGADD( 2, ( "due to being in oplock break state.\n" ) );
+ DEBUG(2,("reply_nttrans: queueing message NT_TRANSACT_CREATE \
+due to being in oplock break state.\n" ));
push_oplock_pending_smb_message( inbuf, length);
return -1;
@@ -1033,9 +1291,9 @@ int reply_nttrans(char *inbuf,char *outbuf,int length,int bufsize)
* Ensure this is so as a sanity check.
*/
- if(CVAL(inbuf, smb_wct) != 19 + setup_count) {
+ if(CVAL(inbuf, smb_wct) != 19 + (setup_count/2)) {
DEBUG(2,("Invalid smb_wct %d in nttrans call (should be %d)\n",
- CVAL(inbuf, smb_wct), 19 + setup_count));
+ CVAL(inbuf, smb_wct), 19 + (setup_count/2)));
return(ERROR(ERRSRV,ERRerror));
}
@@ -1062,12 +1320,21 @@ int reply_nttrans(char *inbuf,char *outbuf,int length,int bufsize)
if (parameter_count > total_parameter_count || data_count > total_data_count)
exit_server("reply_nttrans: invalid sizes in packet.\n");
- if(setup)
+ if(setup) {
memcpy( setup, &inbuf[smb_nt_SetupStart], setup_count);
- if(params)
+ DEBUG(10,("reply_nttrans: setup_count = %d\n", setup_count));
+ dump_data(10, setup, setup_count);
+ }
+ if(params) {
memcpy( params, smb_base(inbuf) + parameter_offset, parameter_count);
- if(data)
+ DEBUG(10,("reply_nttrans: parameter_count = %d\n", parameter_count));
+ dump_data(10, params, parameter_count);
+ }
+ if(data) {
memcpy( data, smb_base(inbuf) + data_offset, data_count);
+ DEBUG(10,("reply_nttrans: data_count = %d\n",data_count));
+ dump_data(10, data, data_count);
+ }
if(num_data_sofar < total_data_count || num_params_sofar < total_parameter_count) {
/* We need to send an interim response then receive the rest
@@ -1145,8 +1412,7 @@ int reply_nttrans(char *inbuf,char *outbuf,int length,int bufsize)
break;
default:
/* Error in request */
- DEBUG( 0, ( "reply_nttrans: Unknown request %d in nttrans call\n",
- function_code ) );
+ DEBUG(0,("reply_nttrans: Unknown request %d in nttrans call\n", function_code));
if(setup)
free(setup);
if(params)
generated by cgit (git 2.34.1) at 2024-12-20 04:48:23 +0000