/*
- Unix SMB/Netbios implementation.
- Version 1.9.
+ Unix SMB/CIFS implementation.
Pipe SMB reply routines
Copyright (C) Andrew Tridgell 1992-1998
Copyright (C) Luke Kenneth Casson Leighton 1996-1998
Copyright (C) Paul Ashton 1997-1998.
+ Copyright (C) Jeremy Allison 2005.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
+ the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
#include "includes.h"
-#include "trans2.h"
#define PIPE "\\PIPE\\"
#define PIPELEN strlen(PIPE)
-#define REALLOC(ptr,size) Realloc(ptr,MAX((size),4*1024))
+#define MAX_PIPE_NAME_LEN 24
-/* look in server.c for some explanation of these variables */
-extern int Protocol;
-extern int DEBUGLEVEL;
-extern char magic_char;
-extern BOOL case_sensitive;
-extern pstring sesssetup_user;
-extern int Client;
+/* PIPE/<name>/<pid>/<pnum> */
+#define PIPEDB_KEY_FORMAT "PIPE/%s/%u/%d"
-#define VALID_PNUM(pnum) (((pnum) >= 0) && ((pnum) < MAX_OPEN_PIPES))
-#define OPEN_PNUM(pnum) (VALID_PNUM(pnum) && Pipes[pnum].open)
+struct pipe_dbrec {
+ struct server_id pid;
+ int pnum;
+ uid_t uid;
+
+ char name[MAX_PIPE_NAME_LEN];
+ fstring user;
+};
-/* this macro should always be used to extract an pnum (smb_fid) from
- a packet to ensure chaining works correctly */
-#define GETPNUM(buf,where) (chain_pnum!= -1?chain_pnum:SVAL(buf,where))
extern struct pipe_id_info pipe_names[];
/****************************************************************************
- reply to an open and X on a named pipe
-
- This code is basically stolen from reply_open_and_X with some
- wrinkles to handle pipes.
+ Reply to an open and X on a named pipe.
+ This code is basically stolen from reply_open_and_X with some
+ wrinkles to handle pipes.
****************************************************************************/
+
int reply_open_pipe_and_X(connection_struct *conn,
char *inbuf,char *outbuf,int length,int bufsize)
{
- pstring fname;
- uint16 vuid = SVAL(inbuf, smb_uid);
- int pnum = -1;
- int smb_ofun = SVAL(inbuf,smb_vwv8);
- int size=0,fmode=0,mtime=0,rmode=0;
- int i;
-
- /* XXXX we need to handle passed times, sattr and flags */
- pstrcpy(fname,smb_buf(inbuf));
-
- /* If the name doesn't start \PIPE\ then this is directed */
- /* at a mailslot or something we really, really don't understand, */
- /* not just something we really don't understand. */
- if ( strncmp(fname,PIPE,PIPELEN) != 0 )
- return(ERROR(ERRSRV,ERRaccess));
-
- DEBUG(4,("Opening pipe %s.\n", fname));
-
- /* See if it is one we want to handle. */
- for( i = 0; pipe_names[i].client_pipe ; i++ )
- if( strequal(fname,pipe_names[i].client_pipe) )
- break;
-
- if (pipe_names[i].client_pipe == NULL)
- return(ERROR(ERRSRV,ERRaccess));
-
- /* Strip \PIPE\ off the name. */
- pstrcpy(fname,smb_buf(inbuf) + PIPELEN);
-
- /* Known pipes arrive with DIR attribs. Remove it so a regular file */
- /* can be opened and add it in after the open. */
- DEBUG(3,("Known pipe %s opening.\n",fname));
- smb_ofun |= 0x10; /* Add Create it not exists flag */
-
- pnum = open_rpc_pipe_hnd(fname, conn, vuid);
- if (pnum < 0) return(ERROR(ERRSRV,ERRnofids));
-
- /* Prepare the reply */
- set_message(outbuf,15,0,True);
-
- /* Mark the opened file as an existing named pipe in message mode. */
- SSVAL(outbuf,smb_vwv9,2);
- SSVAL(outbuf,smb_vwv10,0xc700);
-
- if (rmode == 2)
- {
- DEBUG(4,("Resetting open result to open from create.\n"));
- rmode = 1;
- }
-
- SSVAL(outbuf,smb_vwv2, pnum + PIPE_HANDLE_OFFSET); /* mark file
- handle up into
- high range */
- SSVAL(outbuf,smb_vwv3,fmode);
- put_dos_date3(outbuf,smb_vwv4,mtime);
- SIVAL(outbuf,smb_vwv6,size);
- SSVAL(outbuf,smb_vwv8,rmode);
- SSVAL(outbuf,smb_vwv11,0);
-
- return chain_reply(inbuf,outbuf,length,bufsize);
+ pstring fname;
+ pstring pipe_name;
+ uint16 vuid = SVAL(inbuf, smb_uid);
+ smb_np_struct *p;
+ int size=0,fmode=0,mtime=0,rmode=0;
+ int i;
+
+ /* XXXX we need to handle passed times, sattr and flags */
+ srvstr_pull_buf(inbuf, SVAL(inbuf, smb_flg2), pipe_name,
+ smb_buf(inbuf), sizeof(pipe_name), STR_TERMINATE);
+
+ /* If the name doesn't start \PIPE\ then this is directed */
+ /* at a mailslot or something we really, really don't understand, */
+ /* not just something we really don't understand. */
+ if ( strncmp(pipe_name,PIPE,PIPELEN) != 0 ) {
+ return(ERROR_DOS(ERRSRV,ERRaccess));
+ }
+
+ DEBUG(4,("Opening pipe %s.\n", pipe_name));
+
+ /* See if it is one we want to handle. */
+ for( i = 0; pipe_names[i].client_pipe ; i++ ) {
+ if( strequal(pipe_name,pipe_names[i].client_pipe)) {
+ break;
+ }
+ }
+
+ if (pipe_names[i].client_pipe == NULL) {
+ return(ERROR_BOTH(NT_STATUS_OBJECT_NAME_NOT_FOUND,ERRDOS,ERRbadpipe));
+ }
+
+ /* Strip \PIPE\ off the name. */
+ pstrcpy(fname, pipe_name + PIPELEN);
+
+#if 0
+ /*
+ * Hack for NT printers... JRA.
+ */
+ if(should_fail_next_srvsvc_open(fname))
+ return(ERROR(ERRSRV,ERRaccess));
+#endif
+
+ /* Known pipes arrive with DIR attribs. Remove it so a regular file */
+ /* can be opened and add it in after the open. */
+ DEBUG(3,("Known pipe %s opening.\n",fname));
+
+ p = open_rpc_pipe_p(fname, conn, vuid);
+ if (!p) {
+ return(ERROR_DOS(ERRSRV,ERRnofids));
+ }
+
+ /* Prepare the reply */
+ set_message(inbuf,outbuf,15,0,True);
+
+ /* Mark the opened file as an existing named pipe in message mode. */
+ SSVAL(outbuf,smb_vwv9,2);
+ SSVAL(outbuf,smb_vwv10,0xc700);
+
+ if (rmode == 2) {
+ DEBUG(4,("Resetting open result to open from create.\n"));
+ rmode = 1;
+ }
+
+ SSVAL(outbuf,smb_vwv2, p->pnum);
+ SSVAL(outbuf,smb_vwv3,fmode);
+ srv_put_dos_date3(outbuf,smb_vwv4,mtime);
+ SIVAL(outbuf,smb_vwv6,size);
+ SSVAL(outbuf,smb_vwv8,rmode);
+ SSVAL(outbuf,smb_vwv11,0x0001);
+
+ return chain_reply(inbuf,outbuf,length,bufsize);
}
+/****************************************************************************
+ Reply to a write on a pipe.
+****************************************************************************/
+
+int reply_pipe_write(char *inbuf,char *outbuf,int length,int dum_bufsize)
+{
+ smb_np_struct *p = get_rpc_pipe_p(inbuf,smb_vwv0);
+ uint16 vuid = SVAL(inbuf,smb_uid);
+ size_t numtowrite = SVAL(inbuf,smb_vwv1);
+ int nwritten;
+ int outsize;
+ char *data;
+
+ if (!p) {
+ return(ERROR_DOS(ERRDOS,ERRbadfid));
+ }
+
+ if (p->vuid != vuid) {
+ return ERROR_NT(NT_STATUS_INVALID_HANDLE);
+ }
+
+ data = smb_buf(inbuf) + 3;
+
+ if (numtowrite == 0) {
+ nwritten = 0;
+ } else {
+ nwritten = write_to_pipe(p, data, numtowrite);
+ }
+
+ if ((nwritten == 0 && numtowrite != 0) || (nwritten < 0)) {
+ return (UNIXERROR(ERRDOS,ERRnoaccess));
+ }
+
+ outsize = set_message(inbuf,outbuf,1,0,True);
+
+ SSVAL(outbuf,smb_vwv0,nwritten);
+
+ DEBUG(3,("write-IPC pnum=%04x nwritten=%d\n", p->pnum, nwritten));
+
+ return(outsize);
+}
/****************************************************************************
- reply to a read and X
+ Reply to a write and X.
- This code is basically stolen from reply_read_and_X with some
- wrinkles to handle pipes.
+ This code is basically stolen from reply_write_and_X with some
+ wrinkles to handle pipes.
****************************************************************************/
-int reply_pipe_read_and_X(char *inbuf,char *outbuf,int length,int bufsize)
+
+int reply_pipe_write_and_X(char *inbuf,char *outbuf,int length,int bufsize)
{
- int pnum = get_rpc_pipe_num(inbuf,smb_vwv2);
- uint32 smb_offs = IVAL(inbuf,smb_vwv3);
- int smb_maxcnt = SVAL(inbuf,smb_vwv5);
- int smb_mincnt = SVAL(inbuf,smb_vwv6);
- int nread = -1;
- char *data;
- BOOL ok = False;
+ smb_np_struct *p = get_rpc_pipe_p(inbuf,smb_vwv2);
+ uint16 vuid = SVAL(inbuf,smb_uid);
+ size_t numtowrite = SVAL(inbuf,smb_vwv10);
+ int nwritten = -1;
+ int smb_doff = SVAL(inbuf, smb_vwv11);
+ BOOL pipe_start_message_raw = ((SVAL(inbuf, smb_vwv7) & (PIPE_START_MESSAGE|PIPE_RAW_MODE)) ==
+ (PIPE_START_MESSAGE|PIPE_RAW_MODE));
+ char *data;
+
+ if (!p) {
+ return(ERROR_DOS(ERRDOS,ERRbadfid));
+ }
+
+ if (p->vuid != vuid) {
+ return ERROR_NT(NT_STATUS_INVALID_HANDLE);
+ }
+
+ data = smb_base(inbuf) + smb_doff;
+
+ if (numtowrite == 0) {
+ nwritten = 0;
+ } else {
+ if(pipe_start_message_raw) {
+ /*
+ * For the start of a message in named pipe byte mode,
+ * the first two bytes are a length-of-pdu field. Ignore
+ * them (we don't trust the client). JRA.
+ */
+ if(numtowrite < 2) {
+ DEBUG(0,("reply_pipe_write_and_X: start of message set and not enough data sent.(%u)\n",
+ (unsigned int)numtowrite ));
+ return (UNIXERROR(ERRDOS,ERRnoaccess));
+ }
+
+ data += 2;
+ numtowrite -= 2;
+ }
+ nwritten = write_to_pipe(p, data, numtowrite);
+ }
+
+ if ((nwritten == 0 && numtowrite != 0) || (nwritten < 0)) {
+ return (UNIXERROR(ERRDOS,ERRnoaccess));
+ }
+
+ set_message(inbuf,outbuf,6,0,True);
- set_message(outbuf,12,0,True);
- data = smb_buf(outbuf);
+ nwritten = (pipe_start_message_raw ? nwritten + 2 : nwritten);
+ SSVAL(outbuf,smb_vwv2,nwritten);
+
+ DEBUG(3,("writeX-IPC pnum=%04x nwritten=%d\n", p->pnum, nwritten));
- nread = read_pipe(pnum, data, smb_offs, smb_maxcnt);
+ return chain_reply(inbuf,outbuf,length,bufsize);
+}
- ok = True;
-
- if (nread < 0)
- return(UNIXERROR(ERRDOS,ERRnoaccess));
+/****************************************************************************
+ Reply to a read and X.
+ This code is basically stolen from reply_read_and_X with some
+ wrinkles to handle pipes.
+****************************************************************************/
+
+int reply_pipe_read_and_X(char *inbuf,char *outbuf,int length,int bufsize)
+{
+ smb_np_struct *p = get_rpc_pipe_p(inbuf,smb_vwv2);
+ int smb_maxcnt = SVAL(inbuf,smb_vwv5);
+ int smb_mincnt = SVAL(inbuf,smb_vwv6);
+ int nread = -1;
+ char *data;
+ BOOL unused;
+
+ /* we don't use the offset given to use for pipe reads. This
+ is deliberate, instead we always return the next lump of
+ data on the pipe */
+#if 0
+ uint32 smb_offs = IVAL(inbuf,smb_vwv3);
+#endif
+
+ if (!p) {
+ return(ERROR_DOS(ERRDOS,ERRbadfid));
+ }
+
+ set_message(inbuf,outbuf,12,0,True);
+ data = smb_buf(outbuf);
+
+ nread = read_from_pipe(p, data, smb_maxcnt, &unused);
+
+ if (nread < 0) {
+ return(UNIXERROR(ERRDOS,ERRnoaccess));
+ }
- SSVAL(outbuf,smb_vwv5,nread);
- SSVAL(outbuf,smb_vwv6,smb_offset(data,outbuf));
- SSVAL(smb_buf(outbuf),-2,nread);
+ SSVAL(outbuf,smb_vwv5,nread);
+ SSVAL(outbuf,smb_vwv6,smb_offset(data,outbuf));
+ SSVAL(smb_buf(outbuf),-2,nread);
- DEBUG(3,("readX pnum=%04x min=%d max=%d nread=%d\n",
- pnum, smb_mincnt, smb_maxcnt, nread));
+ DEBUG(3,("readX-IPC pnum=%04x min=%d max=%d nread=%d\n",
+ p->pnum, smb_mincnt, smb_maxcnt, nread));
- set_chain_pnum(pnum);
-
- return chain_reply(inbuf,outbuf,length,bufsize);
+ /* Ensure we set up the message length to include the data length read. */
+ set_message_bcc(inbuf,outbuf,nread);
+ return chain_reply(inbuf,outbuf,length,bufsize);
}
+
/****************************************************************************
- reply to a close
+ Reply to a close.
****************************************************************************/
+
int reply_pipe_close(connection_struct *conn, char *inbuf,char *outbuf)
{
- int pnum = get_rpc_pipe_num(inbuf,smb_vwv0);
- int outsize = set_message(outbuf,0,0,True);
+ smb_np_struct *p = get_rpc_pipe_p(inbuf,smb_vwv0);
+ int outsize = set_message(inbuf,outbuf,0,0,True);
- DEBUG(5,("reply_pipe_close: pnum:%x\n", pnum));
+ if (!p) {
+ return(ERROR_DOS(ERRDOS,ERRbadfid));
+ }
- if (!close_rpc_pipe_hnd(pnum, conn)) return(ERROR(ERRDOS,ERRbadfid));
+ DEBUG(5,("reply_pipe_close: pnum:%x\n", p->pnum));
- return(outsize);
-}
+ if (!close_rpc_pipe_hnd(p)) {
+ return ERROR_DOS(ERRDOS,ERRbadfid);
+ }
+
+ /* TODO: REMOVE PIPE FROM DB */
+ return(outsize);
+}
git.samba.org / samba.git / blobdiff