split clientgen.c into several parts

the next step is splitting out the auth code, to make adding lukes
NTLMSSP support easier
(This used to be commit 10c5470835b43116ed48b3137c3b9cc867a20989)

1 files changed, 233 insertions, 0 deletions

diff --git a/source3/libsmb/clitrans.c b/source3/libsmb/clitrans.c
new file mode 100644
index 0000000000..76758a0dd6
--- /dev/null
+++ b/source3/libsmb/clitrans.c
@@ -0,0 +1,233 @@
+/* 
+   Unix SMB/Netbios implementation.
+   Version 3.0
+   client transaction calls
+   Copyright (C) Andrew Tridgell 1994-1998
+   
+   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
+   (at your option) any later version.
+   
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#define NO_SYSLOG
+
+#include "includes.h"
+
+
+/****************************************************************************
+  send a SMB trans or trans2 request
+  ****************************************************************************/
+BOOL cli_send_trans(struct cli_state *cli, int trans, 
+		    char *name, int pipe_name_len, 
+		    int fid, int flags,
+		    uint16 *setup, int lsetup, int msetup,
+		    char *param, int lparam, int mparam,
+		    char *data, int ldata, int mdata)
+{
+	int i;
+	int this_ldata,this_lparam;
+	int tot_data=0,tot_param=0;
+	char *outdata,*outparam;
+	char *p;
+
+	this_lparam = MIN(lparam,cli->max_xmit - (500+lsetup*2)); /* hack */
+	this_ldata = MIN(ldata,cli->max_xmit - (500+lsetup*2+this_lparam));
+
+	memset(cli->outbuf,'\0',smb_size);
+	set_message(cli->outbuf,14+lsetup,0,True);
+	CVAL(cli->outbuf,smb_com) = trans;
+	SSVAL(cli->outbuf,smb_tid, cli->cnum);
+	cli_setup_packet(cli);
+
+	outparam = smb_buf(cli->outbuf)+(trans==SMBtrans ? pipe_name_len+1 : 3);
+	outdata = outparam+this_lparam;
+
+	/* primary request */
+	SSVAL(cli->outbuf,smb_tpscnt,lparam);	/* tpscnt */
+	SSVAL(cli->outbuf,smb_tdscnt,ldata);	/* tdscnt */
+	SSVAL(cli->outbuf,smb_mprcnt,mparam);	/* mprcnt */
+	SSVAL(cli->outbuf,smb_mdrcnt,mdata);	/* mdrcnt */
+	SCVAL(cli->outbuf,smb_msrcnt,msetup);	/* msrcnt */
+	SSVAL(cli->outbuf,smb_flags,flags);	/* flags */
+	SIVAL(cli->outbuf,smb_timeout,0);		/* timeout */
+	SSVAL(cli->outbuf,smb_pscnt,this_lparam);	/* pscnt */
+	SSVAL(cli->outbuf,smb_psoff,smb_offset(outparam,cli->outbuf)); /* psoff */
+	SSVAL(cli->outbuf,smb_dscnt,this_ldata);	/* dscnt */
+	SSVAL(cli->outbuf,smb_dsoff,smb_offset(outdata,cli->outbuf)); /* dsoff */
+	SCVAL(cli->outbuf,smb_suwcnt,lsetup);	/* suwcnt */
+	for (i=0;i<lsetup;i++)		/* setup[] */
+		SSVAL(cli->outbuf,smb_setup+i*2,setup[i]);
+	p = smb_buf(cli->outbuf);
+	if (trans==SMBtrans) {
+		memcpy(p,name, pipe_name_len + 1);  /* name[] */
+	} else {
+		*p++ = 0;  /* put in a null smb_name */
+		*p++ = 'D'; *p++ = ' ';	/* observed in OS/2 */
+	}
+	if (this_lparam)			/* param[] */
+		memcpy(outparam,param,this_lparam);
+	if (this_ldata)			/* data[] */
+		memcpy(outdata,data,this_ldata);
+	set_message(cli->outbuf,14+lsetup,		/* wcnt, bcc */
+		    PTR_DIFF(outdata+this_ldata,smb_buf(cli->outbuf)),False);
+
+	show_msg(cli->outbuf);
+	cli_send_smb(cli);
+
+	if (this_ldata < ldata || this_lparam < lparam) {
+		/* receive interim response */
+		if (!cli_receive_smb(cli) || 
+		    CVAL(cli->inbuf,smb_rcls) != 0) {
+			return(False);
+		}      
+
+		tot_data = this_ldata;
+		tot_param = this_lparam;
+		
+		while (tot_data < ldata || tot_param < lparam)  {
+			this_lparam = MIN(lparam-tot_param,cli->max_xmit - 500); /* hack */
+			this_ldata = MIN(ldata-tot_data,cli->max_xmit - (500+this_lparam));
+
+			set_message(cli->outbuf,trans==SMBtrans?8:9,0,True);
+			CVAL(cli->outbuf,smb_com) = trans==SMBtrans ? SMBtranss : SMBtranss2;
+			
+			outparam = smb_buf(cli->outbuf);
+			outdata = outparam+this_lparam;
+			
+			/* secondary request */
+			SSVAL(cli->outbuf,smb_tpscnt,lparam);	/* tpscnt */
+			SSVAL(cli->outbuf,smb_tdscnt,ldata);	/* tdscnt */
+			SSVAL(cli->outbuf,smb_spscnt,this_lparam);	/* pscnt */
+			SSVAL(cli->outbuf,smb_spsoff,smb_offset(outparam,cli->outbuf)); /* psoff */
+			SSVAL(cli->outbuf,smb_spsdisp,tot_param);	/* psdisp */
+			SSVAL(cli->outbuf,smb_sdscnt,this_ldata);	/* dscnt */
+			SSVAL(cli->outbuf,smb_sdsoff,smb_offset(outdata,cli->outbuf)); /* dsoff */
+			SSVAL(cli->outbuf,smb_sdsdisp,tot_data);	/* dsdisp */
+			if (trans==SMBtrans2)
+				SSVALS(cli->outbuf,smb_sfid,fid);		/* fid */
+			if (this_lparam)			/* param[] */
+				memcpy(outparam,param+tot_param,this_lparam);
+			if (this_ldata)			/* data[] */
+				memcpy(outdata,data+tot_data,this_ldata);
+			set_message(cli->outbuf,trans==SMBtrans?8:9, /* wcnt, bcc */
+				    PTR_DIFF(outdata+this_ldata,smb_buf(cli->outbuf)),False);
+			
+			show_msg(cli->outbuf);
+			cli_send_smb(cli);
+			
+			tot_data += this_ldata;
+			tot_param += this_lparam;
+		}
+	}
+
+	return(True);
+}
+
+
+/****************************************************************************
+  receive a SMB trans or trans2 response allocating the necessary memory
+  ****************************************************************************/
+BOOL cli_receive_trans(struct cli_state *cli,int trans,
+                              char **param, int *param_len,
+                              char **data, int *data_len)
+{
+	int total_data=0;
+	int total_param=0;
+	int this_data,this_param;
+	uint8 eclass;
+	uint32 ecode;
+
+	*data_len = *param_len = 0;
+
+	if (!cli_receive_smb(cli))
+		return False;
+
+	show_msg(cli->inbuf);
+	
+	/* sanity check */
+	if (CVAL(cli->inbuf,smb_com) != trans) {
+		DEBUG(0,("Expected %s response, got command 0x%02x\n",
+			 trans==SMBtrans?"SMBtrans":"SMBtrans2", 
+			 CVAL(cli->inbuf,smb_com)));
+		return(False);
+	}
+
+	/*
+	 * An NT RPC pipe call can return ERRDOS, ERRmoredata
+	 * to a trans call. This is not an error and should not
+	 * be treated as such.
+	 */
+
+	if (cli_error(cli, &eclass, &ecode, NULL))
+	{
+        if(cli->nt_pipe_fnum == 0 || !(eclass == ERRDOS && ecode == ERRmoredata))
+			return(False);
+	}
+
+	/* parse out the lengths */
+	total_data = SVAL(cli->inbuf,smb_tdrcnt);
+	total_param = SVAL(cli->inbuf,smb_tprcnt);
+
+	/* allocate it */
+	*data = Realloc(*data,total_data);
+	*param = Realloc(*param,total_param);
+
+	while (1)  {
+		this_data = SVAL(cli->inbuf,smb_drcnt);
+		this_param = SVAL(cli->inbuf,smb_prcnt);
+
+		if (this_data + *data_len > total_data ||
+		    this_param + *param_len > total_param) {
+			DEBUG(1,("Data overflow in cli_receive_trans\n"));
+			return False;
+		}
+
+		if (this_data)
+			memcpy(*data + SVAL(cli->inbuf,smb_drdisp),
+			       smb_base(cli->inbuf) + SVAL(cli->inbuf,smb_droff),
+			       this_data);
+		if (this_param)
+			memcpy(*param + SVAL(cli->inbuf,smb_prdisp),
+			       smb_base(cli->inbuf) + SVAL(cli->inbuf,smb_proff),
+			       this_param);
+		*data_len += this_data;
+		*param_len += this_param;
+
+		/* parse out the total lengths again - they can shrink! */
+		total_data = SVAL(cli->inbuf,smb_tdrcnt);
+		total_param = SVAL(cli->inbuf,smb_tprcnt);
+		
+		if (total_data <= *data_len && total_param <= *param_len)
+			break;
+		
+		if (!cli_receive_smb(cli))
+			return False;
+
+		show_msg(cli->inbuf);
+		
+		/* sanity check */
+		if (CVAL(cli->inbuf,smb_com) != trans) {
+			DEBUG(0,("Expected %s response, got command 0x%02x\n",
+				 trans==SMBtrans?"SMBtrans":"SMBtrans2", 
+				 CVAL(cli->inbuf,smb_com)));
+			return(False);
+		}
+		if (cli_error(cli, &eclass, &ecode, NULL))
+		{
+        	if(cli->nt_pipe_fnum == 0 || !(eclass == ERRDOS && ecode == ERRmoredata))
+				return(False);
+		}
+	}
+	
+	return(True);
+}