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-rw-r--r--source/smbd/reply.c421
1 files changed, 206 insertions, 215 deletions
diff --git a/source/smbd/reply.c b/source/smbd/reply.c
index f03ce99fc14..ad2236cdf76 100644
--- a/source/smbd/reply.c
+++ b/source/smbd/reply.c
@@ -2089,154 +2089,140 @@ int reply_unlink(connection_struct *conn, char *inbuf,char *outbuf, int dum_size
return(outsize);
}
+/****************************************************************************
+ Fail for readbraw.
+****************************************************************************/
+
+void fail_readraw(void)
+{
+ pstring errstr;
+ slprintf(errstr, sizeof(errstr)-1, "FAIL ! reply_readbraw: socket write fail (%s)\n",
+ strerror(errno) );
+ exit_server(errstr);
+}
/****************************************************************************
- reply to a readbraw (core+ protocol)
+ Reply to a readbraw (core+ protocol).
****************************************************************************/
int reply_readbraw(connection_struct *conn, char *inbuf, char *outbuf, int dum_size, int dum_buffsize)
{
- size_t maxcount,mincount;
- size_t nread = 0;
- SMB_OFF_T startpos;
- char *header = outbuf;
- ssize_t ret=0;
- files_struct *fsp;
- START_PROFILE(SMBreadbraw);
+ size_t maxcount,mincount;
+ size_t nread = 0;
+ SMB_OFF_T startpos;
+ char *header = outbuf;
+ ssize_t ret=0;
+ files_struct *fsp;
+ START_PROFILE(SMBreadbraw);
- /*
- * Special check if an oplock break has been issued
- * and the readraw request croses on the wire, we must
- * return a zero length response here.
- */
+ /*
+ * Special check if an oplock break has been issued
+ * and the readraw request croses on the wire, we must
+ * return a zero length response here.
+ */
- if(global_oplock_break)
- {
- _smb_setlen(header,0);
- transfer_file(0,smbd_server_fd(),(SMB_OFF_T)0,header,4,0);
- DEBUG(5,("readbraw - oplock break finished\n"));
- END_PROFILE(SMBreadbraw);
- return -1;
- }
+ if(global_oplock_break) {
+ _smb_setlen(header,0);
+ if (write_data(smbd_server_fd(),header,4) != 4)
+ fail_readraw();
+ DEBUG(5,("readbraw - oplock break finished\n"));
+ END_PROFILE(SMBreadbraw);
+ return -1;
+ }
- fsp = file_fsp(inbuf,smb_vwv0);
-
- if (!FNUM_OK(fsp,conn) || !fsp->can_read) {
- /*
- * fsp could be NULL here so use the value from the packet. JRA.
- */
- DEBUG(3,("fnum %d not open in readbraw - cache prime?\n",(int)SVAL(inbuf,smb_vwv0)));
- _smb_setlen(header,0);
- transfer_file(0,smbd_server_fd(),(SMB_OFF_T)0,header,4,0);
- END_PROFILE(SMBreadbraw);
- return(-1);
- }
+ fsp = file_fsp(inbuf,smb_vwv0);
- CHECK_FSP(fsp,conn);
+ if (!FNUM_OK(fsp,conn) || !fsp->can_read) {
+ /*
+ * fsp could be NULL here so use the value from the packet. JRA.
+ */
+ DEBUG(3,("fnum %d not open in readbraw - cache prime?\n",(int)SVAL(inbuf,smb_vwv0)));
+ _smb_setlen(header,0);
+ if (write_data(smbd_server_fd(),header,4) != 4)
+ fail_readraw();
+ END_PROFILE(SMBreadbraw);
+ return(-1);
+ }
- flush_write_cache(fsp, READRAW_FLUSH);
+ CHECK_FSP(fsp,conn);
- startpos = IVAL(inbuf,smb_vwv1);
- if(CVAL(inbuf,smb_wct) == 10) {
- /*
- * This is a large offset (64 bit) read.
- */
+ flush_write_cache(fsp, READRAW_FLUSH);
+
+ startpos = IVAL(inbuf,smb_vwv1);
+ if(CVAL(inbuf,smb_wct) == 10) {
+ /*
+ * This is a large offset (64 bit) read.
+ */
#ifdef LARGE_SMB_OFF_T
- startpos |= (((SMB_OFF_T)IVAL(inbuf,smb_vwv8)) << 32);
+ startpos |= (((SMB_OFF_T)IVAL(inbuf,smb_vwv8)) << 32);
#else /* !LARGE_SMB_OFF_T */
- /*
- * Ensure we haven't been sent a >32 bit offset.
- */
+ /*
+ * Ensure we haven't been sent a >32 bit offset.
+ */
- if(IVAL(inbuf,smb_vwv8) != 0) {
- DEBUG(0,("readbraw - large offset (%x << 32) used and we don't support \
+ if(IVAL(inbuf,smb_vwv8) != 0) {
+ DEBUG(0,("readbraw - large offset (%x << 32) used and we don't support \
64 bit offsets.\n", (unsigned int)IVAL(inbuf,smb_vwv8) ));
- _smb_setlen(header,0);
- transfer_file(0,smbd_server_fd(),(SMB_OFF_T)0,header,4,0);
- END_PROFILE(SMBreadbraw);
- return(-1);
- }
+ _smb_setlen(header,0);
+ if (write_data(smbd_server_fd(),header,4) != 4)
+ fail_readraw();
+ END_PROFILE(SMBreadbraw);
+ return(-1);
+ }
#endif /* LARGE_SMB_OFF_T */
- if(startpos < 0) {
- DEBUG(0,("readbraw - negative 64 bit readraw offset (%.0f) !\n",
- (double)startpos ));
- _smb_setlen(header,0);
- transfer_file(0,smbd_server_fd(),(SMB_OFF_T)0,header,4,0);
- END_PROFILE(SMBreadbraw);
- return(-1);
- }
- }
- maxcount = (SVAL(inbuf,smb_vwv3) & 0xFFFF);
- mincount = (SVAL(inbuf,smb_vwv4) & 0xFFFF);
+ if(startpos < 0) {
+ DEBUG(0,("readbraw - negative 64 bit readraw offset (%.0f) !\n", (double)startpos ));
+ _smb_setlen(header,0);
+ if (write_data(smbd_server_fd(),header,4) != 4)
+ fail_readraw();
+ END_PROFILE(SMBreadbraw);
+ return(-1);
+ }
+ }
+ maxcount = (SVAL(inbuf,smb_vwv3) & 0xFFFF);
+ mincount = (SVAL(inbuf,smb_vwv4) & 0xFFFF);
- /* ensure we don't overrun the packet size */
- maxcount = MIN(65535,maxcount);
- maxcount = MAX(mincount,maxcount);
+ /* ensure we don't overrun the packet size */
+ maxcount = MIN(65535,maxcount);
+ maxcount = MAX(mincount,maxcount);
- if (!is_locked(fsp,conn,(SMB_BIG_UINT)maxcount,(SMB_BIG_UINT)startpos, READ_LOCK,False))
- {
- SMB_OFF_T size = fsp->size;
- SMB_OFF_T sizeneeded = startpos + maxcount;
-
- if (size < sizeneeded)
- {
- SMB_STRUCT_STAT st;
- if (vfs_fstat(fsp,fsp->fd,&st) == 0)
- size = st.st_size;
- if (!fsp->can_write)
- fsp->size = size;
- }
+ if (!is_locked(fsp,conn,(SMB_BIG_UINT)maxcount,(SMB_BIG_UINT)startpos, READ_LOCK,False)) {
+ SMB_OFF_T size = fsp->size;
+ SMB_OFF_T sizeneeded = startpos + maxcount;
+
+ if (size < sizeneeded) {
+ SMB_STRUCT_STAT st;
+ if (vfs_fstat(fsp,fsp->fd,&st) == 0)
+ size = st.st_size;
+ if (!fsp->can_write)
+ fsp->size = size;
+ }
- nread = MIN(maxcount,(size - startpos));
- }
+ nread = MIN(maxcount,(size - startpos));
+ }
- if (nread < mincount)
- nread = 0;
+ if (nread < mincount)
+ nread = 0;
- DEBUG( 3, ( "readbraw fnum=%d start=%.0f max=%d min=%d nread=%d\n",
- fsp->fnum, (double)startpos,
- (int)maxcount, (int)mincount, (int)nread ) );
+ DEBUG( 3, ( "readbraw fnum=%d start=%.0f max=%d min=%d nread=%d\n", fsp->fnum, (double)startpos,
+ (int)maxcount, (int)mincount, (int)nread ) );
-#if UNSAFE_READRAW
- {
- BOOL seek_fail = False;
- int predict=0;
- _smb_setlen(header,nread);
-
- if ((nread-predict) > 0) {
- if(conn->vfs_ops.seek(fsp,fsp->fd,startpos + predict) == -1) {
- DEBUG(0,("reply_readbraw: ERROR: seek_file failed.\n"));
- ret = 0;
- seek_fail = True;
- }
- }
-
- if(!seek_fail)
- ret = (ssize_t)vfs_transfer_file(-1, fsp, fsp->fd, Client, NULL,
- (SMB_OFF_T)(nread-predict),header,4+predict,
- startpos+predict);
- }
+ ret = read_file(fsp,header+4,startpos,nread);
+ if (ret < mincount)
+ ret = 0;
- if (ret != nread+4)
- DEBUG(0,("ERROR: file read failure on %s at %d for %d bytes (%d)\n",
- fsp->fsp_name,startpos,nread,ret));
+ _smb_setlen(header,ret);
+ if (write_data(smbd_server_fd(),header,4+ret) != 4+ret)
+ fail_readraw();
-#else /* UNSAFE_READRAW */
- ret = read_file(fsp,header+4,startpos,nread);
- if (ret < mincount) ret = 0;
-
- _smb_setlen(header,ret);
- transfer_file(0,smbd_server_fd(),0,header,4+ret,0);
-#endif /* UNSAFE_READRAW */
-
- DEBUG(5,("readbraw finished\n"));
- END_PROFILE(SMBreadbraw);
- return -1;
+ DEBUG(5,("readbraw finished\n"));
+ END_PROFILE(SMBreadbraw);
+ return -1;
}
@@ -2437,114 +2423,126 @@ int reply_read_and_X(connection_struct *conn, char *inbuf,char *outbuf,int lengt
int reply_writebraw(connection_struct *conn, char *inbuf,char *outbuf, int size, int dum_buffsize)
{
- ssize_t nwritten=0;
- ssize_t total_written=0;
- size_t numtowrite=0;
- size_t tcount;
- SMB_OFF_T startpos;
- char *data=NULL;
- BOOL write_through;
- files_struct *fsp = file_fsp(inbuf,smb_vwv0);
- int outsize = 0;
- START_PROFILE(SMBwritebraw);
+ ssize_t nwritten=0;
+ ssize_t total_written=0;
+ size_t numtowrite=0;
+ size_t tcount;
+ SMB_OFF_T startpos;
+ char *data=NULL;
+ BOOL write_through;
+ files_struct *fsp = file_fsp(inbuf,smb_vwv0);
+ int outsize = 0;
+ START_PROFILE(SMBwritebraw);
- CHECK_FSP(fsp,conn);
- CHECK_WRITE(fsp);
+ CHECK_FSP(fsp,conn);
+ CHECK_WRITE(fsp);
- tcount = IVAL(inbuf,smb_vwv1);
- startpos = IVAL(inbuf,smb_vwv3);
- write_through = BITSETW(inbuf+smb_vwv7,0);
-
- /* We have to deal with slightly different formats depending
- on whether we are using the core+ or lanman1.0 protocol */
- if(Protocol <= PROTOCOL_COREPLUS) {
- numtowrite = SVAL(smb_buf(inbuf),-2);
- data = smb_buf(inbuf);
- } else {
- numtowrite = SVAL(inbuf,smb_vwv10);
- data = smb_base(inbuf) + SVAL(inbuf, smb_vwv11);
- }
+ tcount = IVAL(inbuf,smb_vwv1);
+ startpos = IVAL(inbuf,smb_vwv3);
+ write_through = BITSETW(inbuf+smb_vwv7,0);
- /* force the error type */
- CVAL(inbuf,smb_com) = SMBwritec;
- CVAL(outbuf,smb_com) = SMBwritec;
+ /* We have to deal with slightly different formats depending
+ on whether we are using the core+ or lanman1.0 protocol */
- if (is_locked(fsp,conn,(SMB_BIG_UINT)tcount,(SMB_BIG_UINT)startpos, WRITE_LOCK,False)) {
- END_PROFILE(SMBwritebraw);
- return(ERROR(ERRDOS,ERRlock));
- }
+ if(Protocol <= PROTOCOL_COREPLUS) {
+ numtowrite = SVAL(smb_buf(inbuf),-2);
+ data = smb_buf(inbuf);
+ } else {
+ numtowrite = SVAL(inbuf,smb_vwv10);
+ data = smb_base(inbuf) + SVAL(inbuf, smb_vwv11);
+ }
- if (numtowrite>0)
- nwritten = write_file(fsp,data,startpos,numtowrite);
+ /* force the error type */
+ CVAL(inbuf,smb_com) = SMBwritec;
+ CVAL(outbuf,smb_com) = SMBwritec;
+
+ if (is_locked(fsp,conn,(SMB_BIG_UINT)tcount,(SMB_BIG_UINT)startpos, WRITE_LOCK,False)) {
+ END_PROFILE(SMBwritebraw);
+ return(ERROR(ERRDOS,ERRlock));
+ }
+
+ if (numtowrite>0)
+ nwritten = write_file(fsp,data,startpos,numtowrite);
- DEBUG(3,("writebraw1 fnum=%d start=%.0f num=%d wrote=%d sync=%d\n",
- fsp->fnum, (double)startpos, (int)numtowrite, (int)nwritten, (int)write_through));
+ DEBUG(3,("writebraw1 fnum=%d start=%.0f num=%d wrote=%d sync=%d\n",
+ fsp->fnum, (double)startpos, (int)numtowrite, (int)nwritten, (int)write_through));
- if (nwritten < numtowrite) {
- END_PROFILE(SMBwritebraw);
- return(UNIXERROR(ERRHRD,ERRdiskfull));
- }
+ if (nwritten < numtowrite) {
+ END_PROFILE(SMBwritebraw);
+ return(UNIXERROR(ERRHRD,ERRdiskfull));
+ }
- total_written = nwritten;
+ total_written = nwritten;
- /* Return a message to the redirector to tell it
- to send more bytes */
- CVAL(outbuf,smb_com) = SMBwritebraw;
- SSVALS(outbuf,smb_vwv0,-1);
- outsize = set_message(outbuf,Protocol>PROTOCOL_COREPLUS?1:0,0,True);
- if (!send_smb(smbd_server_fd(),outbuf))
- exit_server("reply_writebraw: send_smb failed.\n");
+ /* Return a message to the redirector to tell it to send more bytes */
+ CVAL(outbuf,smb_com) = SMBwritebraw;
+ SSVALS(outbuf,smb_vwv0,-1);
+ outsize = set_message(outbuf,Protocol>PROTOCOL_COREPLUS?1:0,0,True);
+ if (!send_smb(smbd_server_fd(),outbuf))
+ exit_server("reply_writebraw: send_smb failed.\n");
- /* Now read the raw data into the buffer and write it */
- if (read_smb_length(smbd_server_fd(),inbuf,SMB_SECONDARY_WAIT) == -1) {
- exit_server("secondary writebraw failed");
- }
+ /* Now read the raw data into the buffer and write it */
+ if (read_smb_length(smbd_server_fd(),inbuf,SMB_SECONDARY_WAIT) == -1) {
+ exit_server("secondary writebraw failed");
+ }
- /* Even though this is not an smb message, smb_len
- returns the generic length of an smb message */
- numtowrite = smb_len(inbuf);
+ /* Even though this is not an smb message, smb_len returns the generic length of an smb message */
+ numtowrite = smb_len(inbuf);
- if (tcount > nwritten+numtowrite) {
- DEBUG(3,("Client overestimated the write %d %d %d\n",
- (int)tcount,(int)nwritten,(int)numtowrite));
- }
+ /* Set up outbuf to return the correct return */
+ outsize = set_message(outbuf,1,0,True);
+ CVAL(outbuf,smb_com) = SMBwritec;
+ SSVAL(outbuf,smb_vwv0,total_written);
- nwritten = vfs_transfer_file(smbd_server_fd(), NULL, -1, fsp,
- (SMB_OFF_T)numtowrite,NULL,0,
- startpos+nwritten);
- total_written += nwritten;
-
- /* Set up outbuf to return the correct return */
- outsize = set_message(outbuf,1,0,True);
- CVAL(outbuf,smb_com) = SMBwritec;
- SSVAL(outbuf,smb_vwv0,total_written);
+ if (numtowrite != 0) {
- if (nwritten < (ssize_t)numtowrite) {
- CVAL(outbuf,smb_rcls) = ERRHRD;
- SSVAL(outbuf,smb_err,ERRdiskfull);
- }
+ if (numtowrite > BUFFER_SIZE) {
+ DEBUG(0,("reply_writebraw: Oversize secondary write raw requested (%u). Terminating\n",
+ (unsigned int)numtowrite ));
+ exit_server("secondary writebraw failed");
+ }
- if ((lp_syncalways(SNUM(conn)) || write_through) &&
- lp_strict_sync(SNUM(conn)))
- sync_file(conn,fsp);
+ if (tcount > nwritten+numtowrite) {
+ DEBUG(3,("Client overestimated the write %d %d %d\n",
+ (int)tcount,(int)nwritten,(int)numtowrite));
+ }
- DEBUG(3,("writebraw2 fnum=%d start=%.0f num=%d wrote=%d\n",
- fsp->fnum, (double)startpos, (int)numtowrite,(int)total_written));
+ if (read_data( smbd_server_fd(), inbuf+4, numtowrite) != numtowrite ) {
+ DEBUG(0,("reply_writebraw: Oversize secondary write raw read failed (%s). Terminating\n",
+ strerror(errno) ));
+ exit_server("secondary writebraw failed");
+ }
- /* we won't return a status if write through is not selected - this
- follows what WfWg does */
- END_PROFILE(SMBwritebraw);
- if (!write_through && total_written==tcount) {
- /*
- * Fix for "rabbit pellet" mode, trigger an early TCP ack by
- * sending a SMBkeepalive. Thanks to DaveCB at Sun for this. JRA.
- */
- if (!send_keepalive(smbd_server_fd()))
- exit_server("reply_writebraw: send of keepalive failed");
- return(-1);
- }
+ nwritten = write_file(fsp,inbuf+4,startpos+nwritten,numtowrite);
- return(outsize);
+ if (nwritten < (ssize_t)numtowrite) {
+ CVAL(outbuf,smb_rcls) = ERRHRD;
+ SSVAL(outbuf,smb_err,ERRdiskfull);
+ }
+
+ if (nwritten > 0)
+ total_written += nwritten;
+ }
+
+ if ((lp_syncalways(SNUM(conn)) || write_through) && lp_strict_sync(SNUM(conn)))
+ sync_file(conn,fsp);
+
+ DEBUG(3,("writebraw2 fnum=%d start=%.0f num=%d wrote=%d\n",
+ fsp->fnum, (double)startpos, (int)numtowrite,(int)total_written));
+
+ /* we won't return a status if write through is not selected - this follows what WfWg does */
+ END_PROFILE(SMBwritebraw);
+ if (!write_through && total_written==tcount) {
+ /*
+ * Fix for "rabbit pellet" mode, trigger an early TCP ack by
+ * sending a SMBkeepalive. Thanks to DaveCB at Sun for this. JRA.
+ */
+ if (!send_keepalive(smbd_server_fd()))
+ exit_server("reply_writebraw: send of keepalive failed");
+ return(-1);
+ }
+
+ return(outsize);
}
/****************************************************************************
@@ -2929,7 +2927,6 @@ int reply_close(connection_struct *conn, char *inbuf,char *outbuf, int size,
{
int outsize = 0;
time_t mtime;
- int32 eclass = 0, err = 0;
files_struct *fsp = NULL;
START_PROFILE(SMBclose);
@@ -2997,12 +2994,6 @@ int reply_close(connection_struct *conn, char *inbuf,char *outbuf, int size,
}
}
- /* We have a cached error */
- if(eclass || err) {
- END_PROFILE(SMBclose);
- return(ERROR(eclass,err));
- }
-
END_PROFILE(SMBclose);
return(outsize);
}
generated by cgit (git 2.34.1) at 2025-10-09 17:44:49 +0000