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-rw-r--r--source3/smbd/trans2.c61
1 files changed, 37 insertions, 24 deletions
diff --git a/source3/smbd/trans2.c b/source3/smbd/trans2.c
index 82052127c9..d2806753d3 100644
--- a/source3/smbd/trans2.c
+++ b/source3/smbd/trans2.c
@@ -573,7 +573,8 @@ int send_trans2_replies(char *outbuf,
char *params,
int paramsize,
char *pdata,
- int datasize)
+ int datasize,
+ int max_data_bytes)
{
/* As we are using a protocol > LANMAN1 then the max_send
variable must have been set in the sessetupX call.
@@ -594,6 +595,18 @@ int send_trans2_replies(char *outbuf,
set_message(outbuf,10,0,True);
+ /* Modify the data_to_send and datasize and set the error if
+ we're trying to send more than max_data_bytes. We still send
+ the part of the packet(s) that fit. Strange, but needed
+ for OS/2. */
+
+ if (max_data_bytes > 0 && datasize > max_data_bytes) {
+ DEBUG(5,("send_trans2_replies: max_data_bytes %d exceeded by data %d\n",
+ max_data_bytes, datasize ));
+ datasize = data_to_send = max_data_bytes;
+ error_packet_set(outbuf,ERRDOS,ERRbufferoverflow,STATUS_BUFFER_OVERFLOW,__LINE__,__FILE__);
+ }
+
/* If there genuinely are no parameters or data to send just send the empty packet */
if(params_to_send == 0 && data_to_send == 0) {
@@ -932,7 +945,7 @@ static int call_trans2open(connection_struct *conn, char *inbuf, char *outbuf, i
}
/* Send the required number of replies */
- send_trans2_replies(outbuf, bufsize, params, 30, *ppdata, 0);
+ send_trans2_replies(outbuf, bufsize, params, 30, *ppdata, 0, max_data_bytes);
return -1;
}
@@ -1858,7 +1871,7 @@ total_data=%u (should be %u)\n", (unsigned int)total_data, (unsigned int)IVAL(pd
SSVAL(params,6,0); /* Never an EA error */
SSVAL(params,8,last_entry_off);
- send_trans2_replies( outbuf, bufsize, params, 10, pdata, PTR_DIFF(p,pdata));
+ send_trans2_replies( outbuf, bufsize, params, 10, pdata, PTR_DIFF(p,pdata), max_data_bytes);
if ((! *directory) && dptr_path(dptr_num))
slprintf(directory,sizeof(directory)-1, "(%s)",dptr_path(dptr_num));
@@ -2140,7 +2153,7 @@ total_data=%u (should be %u)\n", (unsigned int)total_data, (unsigned int)IVAL(pd
SSVAL(params,4,0); /* Never an EA error */
SSVAL(params,6,last_entry_off);
- send_trans2_replies( outbuf, bufsize, params, 8, pdata, PTR_DIFF(p,pdata));
+ send_trans2_replies( outbuf, bufsize, params, 8, pdata, PTR_DIFF(p,pdata), max_data_bytes);
if ((! *directory) && dptr_path(dptr_num))
slprintf(directory,sizeof(directory)-1, "(%s)",dptr_path(dptr_num));
@@ -2503,7 +2516,7 @@ cBytesSector=%u, cUnitTotal=%u, cUnitAvail=%d\n", (unsigned int)bsize, (unsigned
}
- send_trans2_replies( outbuf, bufsize, params, 0, pdata, data_len);
+ send_trans2_replies( outbuf, bufsize, params, 0, pdata, data_len, max_data_bytes);
DEBUG( 4, ( "%s info_level = %d\n", smb_fn_name(CVAL(inbuf,smb_com)), info_level) );
@@ -3633,7 +3646,7 @@ total_data=%u (should be %u)\n", (unsigned int)total_data, (unsigned int)IVAL(pd
return ERROR_NT(NT_STATUS_INVALID_LEVEL);
}
- send_trans2_replies(outbuf, bufsize, params, param_size, *ppdata, data_size);
+ send_trans2_replies(outbuf, bufsize, params, param_size, *ppdata, data_size, max_data_bytes);
return(-1);
}
@@ -3782,7 +3795,7 @@ static int call_trans2setfilepathinfo(connection_struct *conn, char *inbuf, char
DEBUG(3,("call_trans2setfilepathinfo: Cancelling print job (%s)\n", fsp->fsp_name ));
SSVAL(params,0,0);
- send_trans2_replies(outbuf, bufsize, params, 2, *ppdata, 0);
+ send_trans2_replies(outbuf, bufsize, params, 2, *ppdata, 0, max_data_bytes);
return(-1);
} else
return (UNIXERROR(ERRDOS,ERRbadpath));
@@ -3894,7 +3907,7 @@ static int call_trans2setfilepathinfo(connection_struct *conn, char *inbuf, char
if ((total_data == 4) && (IVAL(pdata,0) == 4)) {
/* We're done. We only get EA info in this call. */
SSVAL(params,0,0);
- send_trans2_replies(outbuf, bufsize, params, 2, *ppdata, 0);
+ send_trans2_replies(outbuf, bufsize, params, 2, *ppdata, 0, max_data_bytes);
return(-1);
}
@@ -3925,7 +3938,7 @@ static int call_trans2setfilepathinfo(connection_struct *conn, char *inbuf, char
/* We're done. We only get EA info in this call. */
SSVAL(params,0,0);
- send_trans2_replies(outbuf, bufsize, params, 2, *ppdata, 0);
+ send_trans2_replies(outbuf, bufsize, params, 2, *ppdata, 0, max_data_bytes);
return(-1);
}
@@ -4117,7 +4130,7 @@ static int call_trans2setfilepathinfo(connection_struct *conn, char *inbuf, char
}
SSVAL(params,0,0);
- send_trans2_replies(outbuf, bufsize, params, 2, *ppdata, 0);
+ send_trans2_replies(outbuf, bufsize, params, 2, *ppdata, 0, max_data_bytes);
return(-1);
}
@@ -4146,7 +4159,7 @@ static int call_trans2setfilepathinfo(connection_struct *conn, char *inbuf, char
/* We're done. We only get position info in this call. */
SSVAL(params,0,0);
- send_trans2_replies(outbuf, bufsize, params, 2, *ppdata, 0);
+ send_trans2_replies(outbuf, bufsize, params, 2, *ppdata, 0, max_data_bytes);
return(-1);
}
@@ -4170,7 +4183,7 @@ static int call_trans2setfilepathinfo(connection_struct *conn, char *inbuf, char
/* We're done. We only get mode info in this call. */
SSVAL(params,0,0);
- send_trans2_replies(outbuf, bufsize, params, 2, *ppdata, 0);
+ send_trans2_replies(outbuf, bufsize, params, 2, *ppdata, 0, max_data_bytes);
return(-1);
}
@@ -4285,7 +4298,7 @@ size = %.0f, uid = %u, gid = %u, raw perms = 0%o\n",
inherit_access_acl(conn, fname, unixmode);
SSVAL(params,0,0);
- send_trans2_replies(outbuf, bufsize, params, 2, *ppdata, 0);
+ send_trans2_replies(outbuf, bufsize, params, 2, *ppdata, 0, max_data_bytes);
return(-1);
}
@@ -4368,7 +4381,7 @@ size = %.0f, uid = %u, gid = %u, raw perms = 0%o\n",
if (SMB_VFS_SYMLINK(conn,link_target,newname) != 0)
return(UNIXERROR(ERRDOS,ERRnoaccess));
SSVAL(params,0,0);
- send_trans2_replies(outbuf, bufsize, params, 2, *ppdata, 0);
+ send_trans2_replies(outbuf, bufsize, params, 2, *ppdata, 0, max_data_bytes);
return(-1);
}
@@ -4392,7 +4405,7 @@ size = %.0f, uid = %u, gid = %u, raw perms = 0%o\n",
}
SSVAL(params,0,0);
- send_trans2_replies(outbuf, bufsize, params, 2, *ppdata, 0);
+ send_trans2_replies(outbuf, bufsize, params, 2, *ppdata, 0, max_data_bytes);
return(-1);
}
@@ -4446,7 +4459,7 @@ size = %.0f, uid = %u, gid = %u, raw perms = 0%o\n",
}
process_pending_change_notify_queue((time_t)0);
SSVAL(params,0,0);
- send_trans2_replies(outbuf, bufsize, params, 2, *ppdata, 0);
+ send_trans2_replies(outbuf, bufsize, params, 2, *ppdata, 0, max_data_bytes);
return(-1);
}
@@ -4497,7 +4510,7 @@ size = %.0f, uid = %u, gid = %u, raw perms = 0%o\n",
}
SSVAL(params,0,0);
- send_trans2_replies(outbuf, bufsize, params, 2, *ppdata, 0);
+ send_trans2_replies(outbuf, bufsize, params, 2, *ppdata, 0, max_data_bytes);
return(-1);
}
#endif
@@ -4603,7 +4616,7 @@ size = %.0f, uid = %u, gid = %u, raw perms = 0%o\n",
}
SSVAL(params,0,0);
- send_trans2_replies(outbuf, bufsize, params, 2, *ppdata, 0);
+ send_trans2_replies(outbuf, bufsize, params, 2, *ppdata, 0, max_data_bytes);
return(-1);
}
@@ -4729,7 +4742,7 @@ size = %.0f, uid = %u, gid = %u, raw perms = 0%o\n",
}
SSVAL(params,0,0);
- send_trans2_replies(outbuf, bufsize, params, 2, *ppdata, 0);
+ send_trans2_replies(outbuf, bufsize, params, 2, *ppdata, 0, max_data_bytes);
return(-1);
}
@@ -4834,7 +4847,7 @@ static int call_trans2mkdir(connection_struct *conn, char *inbuf, char *outbuf,
SSVAL(params,0,0);
- send_trans2_replies(outbuf, bufsize, params, 2, *ppdata, 0);
+ send_trans2_replies(outbuf, bufsize, params, 2, *ppdata, 0, max_data_bytes);
return(-1);
}
@@ -4883,7 +4896,7 @@ static int call_trans2findnotifyfirst(connection_struct *conn, char *inbuf, char
if(fnf_handle == 0)
fnf_handle = 257;
- send_trans2_replies(outbuf, bufsize, params, 6, *ppdata, 0);
+ send_trans2_replies(outbuf, bufsize, params, 6, *ppdata, 0, max_data_bytes);
return(-1);
}
@@ -4911,7 +4924,7 @@ static int call_trans2findnotifynext(connection_struct *conn, char *inbuf, char
SSVAL(params,0,0); /* No changes */
SSVAL(params,2,0); /* No EA errors */
- send_trans2_replies(outbuf, bufsize, params, 4, *ppdata, 0);
+ send_trans2_replies(outbuf, bufsize, params, 4, *ppdata, 0, max_data_bytes);
return(-1);
}
@@ -4945,7 +4958,7 @@ static int call_trans2getdfsreferral(connection_struct *conn, char* inbuf, char*
return UNIXERROR(ERRDOS,ERRbadfile);
SSVAL(outbuf,smb_flg2,SVAL(outbuf,smb_flg2) | FLAGS2_DFS_PATHNAMES);
- send_trans2_replies(outbuf,bufsize,0,0,*ppdata,reply_size);
+ send_trans2_replies(outbuf,bufsize,0,0,*ppdata,reply_size, max_data_bytes);
return(-1);
}
@@ -4983,7 +4996,7 @@ static int call_trans2ioctl(connection_struct *conn, char* inbuf, char* outbuf,
SSVAL(pdata,0,fsp->rap_print_jobid); /* Job number */
srvstr_push( outbuf, pdata + 2, global_myname(), 15, STR_ASCII|STR_TERMINATE); /* Our NetBIOS name */
srvstr_push( outbuf, pdata+18, lp_servicename(SNUM(conn)), 13, STR_ASCII|STR_TERMINATE); /* Service name */
- send_trans2_replies(outbuf,bufsize,*pparams,0,*ppdata,32);
+ send_trans2_replies(outbuf,bufsize,*pparams,0,*ppdata,32, max_data_bytes);
return(-1);
} else {
DEBUG(2,("Unknown TRANS2_IOCTL\n"));
generated by cgit (git 2.34.1) at 2024-08-18 11:47:33 +0000