405 lines
8.3 KiB
C
405 lines
8.3 KiB
C
/*
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* Copyright (c) 2000, Boris Popov
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Boris Popov.
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* 4. Neither the name of the author nor the names of any co-contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $Id: rap.c,v 1.8 2001/02/24 15:56:05 bp Exp $
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* $FreeBSD$
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*
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* This is very simple implementation of RAP protocol.
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*/
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#include <sys/param.h>
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#include <sys/endian.h>
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#include <sys/errno.h>
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#include <sys/stat.h>
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#include <ctype.h>
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#include <err.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <string.h>
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#include <stdlib.h>
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#include <sysexits.h>
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#include <netsmb/smb_lib.h>
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#include <netsmb/smb_conn.h>
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#include <netsmb/smb_rap.h>
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/*#include <sys/ioctl.h>*/
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static int
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smb_rap_parserqparam(const char *s, char **next, int *rlen)
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{
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char *np;
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int len, m;
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m = 1;
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switch (*s++) {
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case 'L':
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case 'T':
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case 'W':
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len = 2;
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break;
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case 'D':
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case 'O':
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len = 4;
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break;
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case 'b':
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case 'F':
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len = 1;
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break;
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case 'r':
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case 's':
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len = 0;
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break;
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default:
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return EINVAL;
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}
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if (isdigit(*s)) {
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len *= strtoul(s, &np, 10);
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s = np;
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}
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*rlen = len;
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*(const char**)next = s;
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return 0;
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}
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static int
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smb_rap_parserpparam(const char *s, char **next, int *rlen)
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{
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char *np;
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int len, m;
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m = 1;
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switch (*s++) {
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case 'e':
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case 'h':
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len = 2;
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break;
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case 'i':
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len = 4;
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break;
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case 'g':
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len = 1;
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break;
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default:
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return EINVAL;
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}
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if (isdigit(*s)) {
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len *= strtoul(s, &np, 10);
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s = np;
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}
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*rlen = len;
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*(const char**)next = s;
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return 0;
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}
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static int
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smb_rap_parserpdata(const char *s, char **next, int *rlen)
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{
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char *np;
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int len, m;
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m = 1;
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switch (*s++) {
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case 'B':
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len = 1;
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break;
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case 'W':
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len = 2;
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break;
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case 'D':
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case 'O':
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case 'z':
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len = 4;
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break;
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default:
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return EINVAL;
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}
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if (isdigit(*s)) {
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len *= strtoul(s, &np, 10);
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s = np;
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}
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*rlen = len;
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*(const char**)next = s;
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return 0;
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}
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static int
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smb_rap_rqparam_z(struct smb_rap *rap, const char *value)
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{
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int len = strlen(value) + 1;
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bcopy(value, rap->r_npbuf, len);
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rap->r_npbuf += len;
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rap->r_plen += len;
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return 0;
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}
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static int
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smb_rap_rqparam(struct smb_rap *rap, char ptype, char plen, long value)
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{
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char *p = rap->r_npbuf;
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int len;
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switch (ptype) {
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case 'L':
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case 'W':
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setwle(p, 0, value);
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len = 2;
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break;
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case 'D':
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setdle(p, 0, value);
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len = 4;
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break;
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case 'b':
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memset(p, value, plen);
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len = plen;
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default:
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return EINVAL;
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}
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rap->r_npbuf += len;
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rap->r_plen += len;
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return 0;
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}
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int
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smb_rap_create(int fn, const char *param, const char *data,
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struct smb_rap **rapp)
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{
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struct smb_rap *rap;
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char *p;
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int plen, len;
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rap = malloc(sizeof(*rap));
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if (rap == NULL)
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return ENOMEM;
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bzero(rap, sizeof(*rap));
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p = rap->r_sparam = rap->r_nparam = strdup(param);
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rap->r_sdata = rap->r_ndata = strdup(data);
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/*
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* Calculate length of request parameter block
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*/
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len = 2 + strlen(param) + 1 + strlen(data) + 1;
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while (*p) {
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if (smb_rap_parserqparam(p, &p, &plen) != 0)
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break;
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len += plen;
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}
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rap->r_pbuf = rap->r_npbuf = malloc(len);
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smb_rap_rqparam(rap, 'W', 1, fn);
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smb_rap_rqparam_z(rap, rap->r_sparam);
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smb_rap_rqparam_z(rap, rap->r_sdata);
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*rapp = rap;
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return 0;
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}
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void
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smb_rap_done(struct smb_rap *rap)
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{
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if (rap->r_sparam)
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free(rap->r_sparam);
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if (rap->r_sdata)
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free(rap->r_sdata);
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free(rap);
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}
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int
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smb_rap_setNparam(struct smb_rap *rap, long value)
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{
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char *p = rap->r_nparam;
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char ptype = *p;
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int error, plen;
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error = smb_rap_parserqparam(p, &p, &plen);
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if (error)
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return error;
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switch (ptype) {
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case 'L':
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rap->r_rcvbuflen = value;
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/* FALLTHROUGH */
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case 'W':
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case 'D':
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case 'b':
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error = smb_rap_rqparam(rap, ptype, plen, value);
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break;
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default:
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return EINVAL;
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}
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rap->r_nparam = p;
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return 0;
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}
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int
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smb_rap_setPparam(struct smb_rap *rap, void *value)
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{
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char *p = rap->r_nparam;
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char ptype = *p;
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int error, plen;
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error = smb_rap_parserqparam(p, &p, &plen);
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if (error)
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return error;
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switch (ptype) {
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case 'r':
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rap->r_rcvbuf = value;
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break;
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default:
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return EINVAL;
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}
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rap->r_nparam = p;
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return 0;
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}
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static int
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smb_rap_getNparam(struct smb_rap *rap, long *value)
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{
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char *p = rap->r_nparam;
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char ptype = *p;
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int error, plen;
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error = smb_rap_parserpparam(p, &p, &plen);
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if (error)
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return error;
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switch (ptype) {
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case 'h':
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*value = le16toh(*(u_int16_t*)rap->r_npbuf);
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break;
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default:
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return EINVAL;
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}
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rap->r_npbuf += plen;
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rap->r_nparam = p;
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return 0;
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}
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int
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smb_rap_request(struct smb_rap *rap, struct smb_ctx *ctx)
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{
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u_int16_t *rp, conv;
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u_int32_t *p32;
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char *dp, *p = rap->r_nparam;
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char ptype;
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int error, rdatacnt, rparamcnt, entries, done, dlen;
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rdatacnt = rap->r_rcvbuflen;
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rparamcnt = rap->r_plen;
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error = smb_t2_request(ctx, 0, 0, "\\PIPE\\LANMAN",
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rap->r_plen, rap->r_pbuf, /* int tparamcnt, void *tparam */
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0, NULL, /* int tdatacnt, void *tdata */
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&rparamcnt, rap->r_pbuf, /* rparamcnt, void *rparam */
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&rdatacnt, rap->r_rcvbuf /* int *rdatacnt, void *rdata */
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);
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if (error)
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return error;
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rp = (u_int16_t*)rap->r_pbuf;
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rap->r_result = le16toh(*rp++);
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conv = le16toh(*rp++);
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rap->r_npbuf = (char*)rp;
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rap->r_entries = entries = 0;
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done = 0;
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while (!done && *p) {
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ptype = *p;
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switch (ptype) {
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case 'e':
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rap->r_entries = entries = le16toh(*(u_int16_t*)rap->r_npbuf);
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rap->r_npbuf += 2;
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p++;
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break;
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default:
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done = 1;
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}
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/* error = smb_rap_parserpparam(p, &p, &plen);
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if (error) {
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smb_error("reply parameter mismath %s", 0, p);
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return EBADRPC;
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}*/
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}
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rap->r_nparam = p;
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/*
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* In general, unpacking entries we may need to relocate
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* entries for proper alingning. For now use them as is.
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*/
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dp = rap->r_rcvbuf;
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while (entries--) {
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p = rap->r_sdata;
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while (*p) {
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ptype = *p;
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error = smb_rap_parserpdata(p, &p, &dlen);
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if (error) {
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smb_error("reply data mismath %s", 0, p);
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return EBADRPC;
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}
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switch (ptype) {
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case 'z':
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p32 = (u_int32_t*)dp;
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*p32 = (*p32 & 0xffff) - conv;
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break;
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}
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dp += dlen;
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}
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}
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return error;
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}
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int
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smb_rap_error(struct smb_rap *rap, int error)
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{
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if (error)
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return error;
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if (rap->r_result == 0)
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return 0;
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return rap->r_result | SMB_RAP_ERROR;
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}
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int
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smb_rap_NetShareEnum(struct smb_ctx *ctx, int sLevel, void *pbBuffer,
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int cbBuffer, int *pcEntriesRead, int *pcTotalAvail)
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{
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struct smb_rap *rap;
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long lval;
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int error;
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error = smb_rap_create(0, "WrLeh", "B13BWz", &rap);
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if (error)
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return error;
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smb_rap_setNparam(rap, sLevel); /* W - sLevel */
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smb_rap_setPparam(rap, pbBuffer); /* r - pbBuffer */
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smb_rap_setNparam(rap, cbBuffer); /* L - cbBuffer */
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error = smb_rap_request(rap, ctx);
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if (error == 0) {
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*pcEntriesRead = rap->r_entries;
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error = smb_rap_getNparam(rap, &lval);
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*pcTotalAvail = lval;
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}
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error = smb_rap_error(rap, error);
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smb_rap_done(rap);
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return error;
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}
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