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- /*
- Unix SMB/Netbios implementation.
- Version 1.9.
- SMB client generic functions
- Copyright (C) Andrew Tridgell 1994-1997
-
- 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.
- */
-
- #ifdef SYSLOG
- #undef SYSLOG
- #endif
-
- #include "includes.h"
-
-
- extern int DEBUGLEVEL;
-
- /****************************************************************************
- setup basics in a outgoing packet
- ****************************************************************************/
- static void cli_setup_pkt(struct cli_state *cli)
- {
- SSVAL(cli->outbuf,smb_pid,cli->pid);
- SSVAL(cli->outbuf,smb_uid,cli->uid);
- SSVAL(cli->outbuf,smb_mid,cli->mid);
- if (cli->protocol > PROTOCOL_CORE) {
- SCVAL(cli->outbuf,smb_flg,0x8);
- SSVAL(cli->outbuf,smb_flg2,0x1);
- }
- }
-
-
- /****************************************************************************
- send a SMB trans or trans2 request
- ****************************************************************************/
- static BOOL cli_send_trans(struct cli_state *cli,
- int trans, char *name, int fid, int flags,
- char *data,char *param,uint16 *setup, int ldata,int lparam,
- int lsetup,int mdata,int mparam,int msetup)
- {
- 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*SIZEOFWORD)); /* hack */
- this_ldata = MIN(ldata,cli->max_xmit - (500+lsetup*SIZEOFWORD+this_lparam));
-
- bzero(cli->outbuf,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_pkt(cli);
-
- outparam = smb_buf(cli->outbuf)+(trans==SMBtrans ? strlen(name)+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*SIZEOFWORD,setup[i]);
- p = smb_buf(cli->outbuf);
- if (trans==SMBtrans) {
- strcpy(p,name); /* 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);
- send_smb(cli->fd,cli->outbuf);
-
- if (this_ldata < ldata || this_lparam < lparam) {
- /* receive interim response */
- if (!receive_smb(cli->fd,cli->inbuf,cli->timeout) ||
- 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)
- SSVAL(cli->outbuf,smb_sfid,fid); /* fid */
- if (this_lparam) /* param[] */
- memcpy(outparam,param,this_lparam);
- if (this_ldata) /* data[] */
- memcpy(outdata,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);
- send_smb(cli->fd,cli->outbuf);
-
- tot_data += this_ldata;
- tot_param += this_lparam;
- }
- }
-
- return(True);
- }
-
-
- /****************************************************************************
- receive a SMB trans or trans2 response allocating the necessary memory
- ****************************************************************************/
- static BOOL cli_receive_trans(struct cli_state *cli,
- int trans,int *data_len,
- int *param_len, char **data,char **param)
- {
- int total_data=0;
- int total_param=0;
- int this_data,this_param;
-
- *data_len = *param_len = 0;
-
- if (!receive_smb(cli->fd,cli->inbuf,cli->timeout))
- 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 (CVAL(cli->inbuf,smb_rcls) != 0)
- 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 (!receive_smb(cli->fd,cli->inbuf,cli->timeout))
- 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 (CVAL(cli->inbuf,smb_rcls) != 0)
- return(False);
- }
-
- return(True);
- }
-
-
- /****************************************************************************
- call a remote api
- ****************************************************************************/
- static BOOL cli_api(struct cli_state *cli,
- int prcnt,int drcnt,int mprcnt,int mdrcnt,int *rprcnt,
- int *rdrcnt, char *param,char *data,
- char **rparam, char **rdata)
- {
- cli_send_trans(cli,SMBtrans,"\\PIPE\\LANMAN",0,0,
- data,param,NULL,
- drcnt,prcnt,0,
- mdrcnt,mprcnt,0);
-
- return (cli_receive_trans(cli,SMBtrans,
- rdrcnt,rprcnt,
- rdata,rparam));
- }
-
-
- /****************************************************************************
- perform a NetWkstaUserLogon
- ****************************************************************************/
- BOOL cli_NetWkstaUserLogon(struct cli_state *cli,char *user, char *workstation)
- {
- char *rparam = NULL;
- char *rdata = NULL;
- char *p;
- int rdrcnt,rprcnt;
- pstring param;
-
- memset(param, 0, sizeof(param));
-
- /* send a SMBtrans command with api NetWkstaUserLogon */
- p = param;
- SSVAL(p,0,132); /* api number */
- p += 2;
- strcpy(p,"OOWb54WrLh");
- p = skip_string(p,1);
- strcpy(p,"WB21BWDWWDDDDDDDzzzD");
- p = skip_string(p,1);
- SSVAL(p,0,1);
- p += 2;
- strcpy(p,user);
- strupper(p);
- p += 21; p++; p += 15; p++;
- strcpy(p, workstation);
- strupper(p);
- p += 16;
- SSVAL(p, 0, BUFFER_SIZE);
- p += 2;
- SSVAL(p, 0, BUFFER_SIZE);
- p += 2;
-
- cli->error = -1;
-
- if (cli_api(cli, PTR_DIFF(p,param),0,
- 1024,BUFFER_SIZE,
- &rprcnt,&rdrcnt,
- param,NULL,
- &rparam,&rdata)) {
- cli->error = SVAL(rparam,0);
- p = rdata;
-
- if (cli->error == 0) {
- DEBUG(4,("NetWkstaUserLogon success\n"));
- cli->privilages = SVAL(p, 24);
- fstrcpy(cli->eff_name,p+2);
- } else {
- DEBUG(1,("NetwkstaUserLogon gave error %d\n", cli->error));
- }
- }
-
- if (rparam) free(rparam);
- if (rdata) free(rdata);
- return cli->error == 0;
- }
-
-
-
- static struct {
- int prot;
- char *name;
- }
- prots[] =
- {
- {PROTOCOL_CORE,"PC NETWORK PROGRAM 1.0"},
- {PROTOCOL_COREPLUS,"MICROSOFT NETWORKS 1.03"},
- {PROTOCOL_LANMAN1,"MICROSOFT NETWORKS 3.0"},
- {PROTOCOL_LANMAN1,"LANMAN1.0"},
- {PROTOCOL_LANMAN2,"LM1.2X002"},
- {PROTOCOL_LANMAN2,"Samba"},
- {PROTOCOL_NT1,"NT LM 0.12"},
- {PROTOCOL_NT1,"NT LANMAN 1.0"},
- {-1,NULL}
- };
-
-
- /****************************************************************************
- send a session setup
- ****************************************************************************/
- BOOL cli_session_setup(struct cli_state *cli,
- char *user,
- char *pass, int passlen,
- char *ntpass, int ntpasslen,
- char *workgroup)
- {
- char *p;
- fstring pword;
-
- if (cli->protocol < PROTOCOL_LANMAN1)
- return False;
-
- if (passlen > sizeof(pword)-1) {
- return False;
- }
-
- if ((cli->sec_mode & 2) && *pass && passlen != 24) {
- #ifdef SMB_PASSWD
- passlen = 24;
- SMBencrypt((uchar *)pass,(uchar *)cli->cryptkey,(uchar *)pword);
- #endif
- } else {
- memcpy(pword, pass, passlen);
- }
-
- /* if in share level security then don't send a password now */
- if (!(cli->sec_mode & 1)) {fstrcpy(pword, "");passlen=1;}
-
- /* send a session setup command */
- bzero(cli->outbuf,smb_size);
-
- if (cli->protocol < PROTOCOL_NT1) {
- set_message(cli->outbuf,10,1 + strlen(user) + passlen,True);
- CVAL(cli->outbuf,smb_com) = SMBsesssetupX;
- cli_setup_pkt(cli);
-
- CVAL(cli->outbuf,smb_vwv0) = 0xFF;
- SSVAL(cli->outbuf,smb_vwv2,cli->max_xmit);
- SSVAL(cli->outbuf,smb_vwv3,2);
- SSVAL(cli->outbuf,smb_vwv4,1);
- SIVAL(cli->outbuf,smb_vwv5,cli->sesskey);
- SSVAL(cli->outbuf,smb_vwv7,passlen);
- p = smb_buf(cli->outbuf);
- memcpy(p,pword,passlen);
- p += passlen;
- strcpy(p,user);
- strupper(p);
- } else {
- set_message(cli->outbuf,13,0,True);
- CVAL(cli->outbuf,smb_com) = SMBsesssetupX;
- cli_setup_pkt(cli);
-
- CVAL(cli->outbuf,smb_vwv0) = 0xFF;
- SSVAL(cli->outbuf,smb_vwv2,BUFFER_SIZE);
- SSVAL(cli->outbuf,smb_vwv3,2);
- SSVAL(cli->outbuf,smb_vwv4,cli->pid);
- SIVAL(cli->outbuf,smb_vwv5,cli->sesskey);
- SSVAL(cli->outbuf,smb_vwv7,passlen);
- SSVAL(cli->outbuf,smb_vwv8,ntpasslen);
- p = smb_buf(cli->outbuf);
- memcpy(p,pword,passlen);
- p += SVAL(cli->outbuf,smb_vwv7);
- memcpy(p,ntpass,ntpasslen);
- p += SVAL(cli->outbuf,smb_vwv8);
- strcpy(p,user);
- strupper(p);
- p = skip_string(p,1);
- strcpy(p,workgroup);
- strupper(p);
- p = skip_string(p,1);
- strcpy(p,"Unix");p = skip_string(p,1);
- strcpy(p,"Samba");p = skip_string(p,1);
- set_message(cli->outbuf,13,PTR_DIFF(p,smb_buf(cli->outbuf)),False);
- }
-
- send_smb(cli->fd,cli->outbuf);
- if (!receive_smb(cli->fd,cli->inbuf,cli->timeout))
- return False;
-
- show_msg(cli->inbuf);
-
- if (CVAL(cli->inbuf,smb_rcls) != 0) {
- return False;
- }
-
- /* use the returned uid from now on */
- cli->uid = SVAL(cli->inbuf,smb_uid);
-
- return True;
- }
-
-
- /****************************************************************************
- send a tconX
- ****************************************************************************/
- BOOL cli_send_tconX(struct cli_state *cli,
- char *share, char *dev, char *pword, int passlen)
- {
- char *p;
- bzero(cli->outbuf,smb_size);
- bzero(cli->inbuf,smb_size);
-
- set_message(cli->outbuf,4,
- 2 + strlen(share) + passlen + strlen(dev),True);
- CVAL(cli->outbuf,smb_com) = SMBtconX;
- cli_setup_pkt(cli);
-
- SSVAL(cli->outbuf,smb_vwv0,0xFF);
- SSVAL(cli->outbuf,smb_vwv3,passlen);
-
- p = smb_buf(cli->outbuf);
- memcpy(p,pword,passlen);
- p += passlen;
- strcpy(p,share);
- p = skip_string(p,1);
- strcpy(p,dev);
-
- SCVAL(cli->inbuf,smb_rcls, 1);
-
- send_smb(cli->fd,cli->outbuf);
- if (!receive_smb(cli->fd,cli->inbuf,cli->timeout))
- return False;
-
- if (CVAL(cli->inbuf,smb_rcls) != 0) {
- return False;
- }
-
- cli->cnum = SVAL(cli->inbuf,smb_tid);
- return True;
- }
-
-
- /****************************************************************************
- send a tree disconnect
- ****************************************************************************/
- BOOL cli_tdis(struct cli_state *cli)
- {
- bzero(cli->outbuf,smb_size);
- set_message(cli->outbuf,0,0,True);
- CVAL(cli->outbuf,smb_com) = SMBtdis;
- SSVAL(cli->outbuf,smb_tid,cli->cnum);
- cli_setup_pkt(cli);
-
- send_smb(cli->fd,cli->outbuf);
- if (!receive_smb(cli->fd,cli->inbuf,cli->timeout))
- return False;
-
- return CVAL(cli->inbuf,smb_rcls) == 0;
- }
-
-
- /****************************************************************************
- send a negprot command
- ****************************************************************************/
- BOOL cli_negprot(struct cli_state *cli)
- {
- char *p;
- int numprots;
- int plength;
-
- bzero(cli->outbuf,smb_size);
-
- /* setup the protocol strings */
- for (plength=0,numprots=0;
- prots[numprots].name && prots[numprots].prot<=cli->protocol;
- numprots++)
- plength += strlen(prots[numprots].name)+2;
-
- set_message(cli->outbuf,0,plength,True);
-
- p = smb_buf(cli->outbuf);
- for (numprots=0;
- prots[numprots].name && prots[numprots].prot<=cli->protocol;
- numprots++) {
- *p++ = 2;
- strcpy(p,prots[numprots].name);
- p += strlen(p) + 1;
- }
-
- CVAL(cli->outbuf,smb_com) = SMBnegprot;
- cli_setup_pkt(cli);
-
- CVAL(smb_buf(cli->outbuf),0) = 2;
-
- send_smb(cli->fd,cli->outbuf);
- if (!receive_smb(cli->fd,cli->inbuf,cli->timeout))
- return False;
-
- show_msg(cli->inbuf);
-
- if (CVAL(cli->inbuf,smb_rcls) != 0 ||
- ((int)SVAL(cli->inbuf,smb_vwv0) >= numprots)) {
- return(False);
- }
-
- cli->protocol = prots[SVAL(cli->inbuf,smb_vwv0)].prot;
-
-
- if (cli->protocol < PROTOCOL_NT1) {
- cli->sec_mode = SVAL(cli->inbuf,smb_vwv1);
- cli->max_xmit = SVAL(cli->inbuf,smb_vwv2);
- cli->sesskey = IVAL(cli->inbuf,smb_vwv6);
- cli->serverzone = SVALS(cli->inbuf,smb_vwv10)*60;
- /* this time is converted to GMT by make_unix_date */
- cli->servertime = make_unix_date(cli->inbuf+smb_vwv8);
- if (cli->protocol >= PROTOCOL_COREPLUS) {
- cli->readbraw_supported = ((SVAL(cli->inbuf,smb_vwv5) & 0x1) != 0);
- cli->writebraw_supported = ((SVAL(cli->inbuf,smb_vwv5) & 0x2) != 0);
- }
- memcpy(cli->cryptkey,smb_buf(cli->inbuf),8);
- } else {
- /* NT protocol */
- cli->sec_mode = CVAL(cli->inbuf,smb_vwv1);
- cli->max_xmit = IVAL(cli->inbuf,smb_vwv3+1);
- cli->sesskey = IVAL(cli->inbuf,smb_vwv7+1);
- cli->serverzone = SVALS(cli->inbuf,smb_vwv15+1)*60;
- /* this time arrives in real GMT */
- cli->servertime = interpret_long_date(cli->inbuf+smb_vwv11+1);
- memcpy(cli->cryptkey,smb_buf(cli->inbuf),8);
- if (IVAL(cli->inbuf,smb_vwv9+1) & 1)
- cli->readbraw_supported =
- cli->writebraw_supported = True;
- }
-
- return True;
- }
-
-
- /****************************************************************************
- send a session request
- ****************************************************************************/
- BOOL cli_session_request(struct cli_state *cli, char *host, int name_type,
- char *myname)
- {
- fstring dest;
- char *p;
- int len = 4;
- /* send a session request (RFC 1002) */
-
- fstrcpy(dest,host);
-
- p = strchr(dest,'.');
- if (p) *p = 0;
-
- fstrcpy(cli->desthost, dest);
-
- /* put in the destination name */
- p = cli->outbuf+len;
- name_mangle(dest,p,name_type);
- len += name_len(p);
-
- /* and my name */
- p = cli->outbuf+len;
- name_mangle(myname,p,0);
- len += name_len(p);
-
- /* setup the packet length */
- _smb_setlen(cli->outbuf,len);
- CVAL(cli->outbuf,0) = 0x81;
-
- send_smb(cli->fd,cli->outbuf);
- DEBUG(5,("Sent session request\n"));
-
- if (!receive_smb(cli->fd,cli->inbuf,cli->timeout))
- return False;
-
- if (CVAL(cli->inbuf,0) != 0x82) {
- cli->error = CVAL(cli->inbuf,0);
- return False;
- }
- return(True);
- }
-
-
- /****************************************************************************
- open the client sockets
- ****************************************************************************/
- BOOL cli_connect(struct cli_state *cli, char *host, struct in_addr *ip)
- {
- struct in_addr dest_ip;
-
- fstrcpy(cli->desthost, host);
-
- if (!ip) {
- struct hostent *hp;
-
- if ((hp = Get_Hostbyname(cli->desthost)) == 0) {
- return False;
- }
-
- putip((char *)&dest_ip,(char *)hp->h_addr);
- } else {
- dest_ip = *ip;
- }
-
-
- cli->fd = open_socket_out(SOCK_STREAM, &dest_ip, 139, cli->timeout);
- if (cli->fd == -1)
- return False;
-
- return True;
- }
-
-
- /****************************************************************************
- initialise a client structure
- ****************************************************************************/
- BOOL cli_initialise(struct cli_state *cli)
- {
- if (cli->initialised) cli_shutdown(cli);
-
- memset(cli, 0, sizeof(*cli));
- cli->fd = -1;
- cli->cnum = -1;
- cli->pid = getpid();
- cli->mid = 1;
- cli->uid = getuid();
- cli->protocol = PROTOCOL_NT1;
- cli->timeout = 20000;
- cli->bufsize = 0x10000;
- cli->max_xmit = cli->bufsize - 4;
- cli->outbuf = (char *)malloc(cli->bufsize);
- cli->inbuf = (char *)malloc(cli->bufsize);
- if (!cli->outbuf || !cli->inbuf) return False;
- cli->initialised = 1;
- return True;
- }
-
- /****************************************************************************
- shutdown a client structure
- ****************************************************************************/
- void cli_shutdown(struct cli_state *cli)
- {
- if (cli->outbuf) free(cli->outbuf);
- if (cli->inbuf) free(cli->inbuf);
- if (cli->fd != -1) close(cli->fd);
- memset(cli, 0, sizeof(*cli));
- }
-