smblib-util.c

RADIUS 服务器介绍 RADIUS服务器支持标准的RADIUS协议

/* UNIX SMBlib NetBIOS implementation

   Version 1.0
   SMBlib Utility Routines

   Copyright (C) Richard Sharpe 1996

*/

/*
   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.
*/

#include "smblib-priv.h"

#include "rfcnb.h"

/* Print out an SMB pkt in all its gory detail ... */

void SMB_Print_Pkt(FILE fd, RFCNB_Pkt *pkt, BOOL command, int Offset, int Len)

{

  /* Well, just how do we do this ... print it I suppose */

  /* Print out the SMB header ...                        */

  /* Print the command                                   */

  /* Print the other bits in the header                  */


  /* etc                                                 */

}

/* Convert a DOS Date_Time to a local host type date time for printing */

char *SMB_DOSTimToStr(int DOS_time)

{ static char SMB_Time_Temp[48];
  int DOS_sec, DOS_min, DOS_hour, DOS_day, DOS_month, DOS_year;

  SMB_Time_Temp[0] = 0;

  DOS_sec   = (DOS_time & 0x001F) * 2;
  DOS_min   = (DOS_time & 0x07E0) >> 5;   
  DOS_hour  = ((DOS_time & 0xF800) >> 11);

  DOS_day   = (DOS_time & 0x001F0000) >> 16;
  DOS_month = (DOS_time & 0x01E00000) >> 21;
  DOS_year  = ((DOS_time & 0xFE000000) >> 25) + 80;

  sprintf(SMB_Time_Temp, "%2d/%02d/%2d %2d:%02d:%02d", DOS_day, DOS_month,
	                 DOS_year, DOS_hour, DOS_min, DOS_sec);

  return(SMB_Time_Temp);

}

/* Convert an attribute byte/word etc to a string ... We return a pointer
   to a static string which we guarantee is long enough. If verbose is 
   true, we print out long form of strings ...                            */

char *SMB_AtrToStr(int attribs, BOOL verbose)

{ static char SMB_Attrib_Temp[128];

  SMB_Attrib_Temp[0] = 0;

  if (attribs & SMB_FA_ROF) 
    strcat(SMB_Attrib_Temp, (verbose?"Read Only ":"R"));

  if (attribs & SMB_FA_HID) 
    strcat(SMB_Attrib_Temp, (verbose?"Hidden ":"H"));

  if (attribs & SMB_FA_SYS) 
    strcat(SMB_Attrib_Temp, (verbose?"System ":"S"));

  if (attribs & SMB_FA_VOL) 
    strcat(SMB_Attrib_Temp, (verbose?"Volume ":"V"));

  if (attribs & SMB_FA_DIR) 
    strcat(SMB_Attrib_Temp, (verbose?"Directory ":"D"));

  if (attribs & SMB_FA_ARC) 
    strcat(SMB_Attrib_Temp, (verbose?"Archive ":"A"));

  return(SMB_Attrib_Temp);

}

/* Pick up the Max Buffer Size from the Tree Structure ... */

int SMB_Get_Tree_MBS(SMB_Tree_Handle tree)

{
  if (tree != NULL) {
    return(tree -> mbs);
  }
  else {
    return(SMBlibE_BAD);
  }
}

/* Pick up the Max buffer size */

int SMB_Get_Max_Buf_Siz(SMB_Handle_Type Con_Handle)

{
  if (Con_Handle != NULL) {
    return(Con_Handle -> max_xmit);
  }
  else {
    return(SMBlibE_BAD);
  }

}
/* Pickup the protocol index from the connection structure                 */

int SMB_Get_Protocol_IDX(SMB_Handle_Type Con_Handle)

{
  if (Con_Handle != NULL) {
    return(Con_Handle -> prot_IDX);
  }
  else {
    return(0xFFFF);  /* Invalid protocol */
  }

}

/* Pick up the protocol from the connection structure                       */

int SMB_Get_Protocol(SMB_Handle_Type Con_Handle)

{
  if (Con_Handle != NULL) {
    return(Con_Handle -> protocol);
  }
  else {
    return(0xFFFF);  /* Invalid protocol */
  }

}

/* Figure out what protocol was accepted, given the list of dialect strings */
/* We offered, and the index back from the server. We allow for a user      */
/* supplied list, and assume that it is a subset of our list                */

int SMB_Figure_Protocol(char *dialects[], int prot_index)

{ int i;

  if (dialects == SMB_Prots) { /* The jobs is easy, just index into table */

    return(SMB_Types[prot_index]);
  }
  else { /* Search through SMB_Prots looking for a match */

    for (i = 0; SMB_Prots[i] != NULL; i++) {

      if (strcmp(dialects[prot_index], SMB_Prots[i]) == 0) { /* A match */

	return(SMB_Types[i]);

      }

    }

    /* If we got here, then we are in trouble, because the protocol was not */
    /* One we understand ...                                                */

    return(SMB_P_Unknown);

  }

}


/* Negotiate the protocol we will use from the list passed in Prots       */
/* we return the index of the accepted protocol in NegProt, -1 indicates  */
/* none acceptible, and our return value is 0 if ok, <0 if problems       */

int SMB_Negotiate(SMB_Handle_Type Con_Handle, char *Prots[])

{ struct SMB_Neg_Prot_Def *prot_pkt;
  struct SMB_Neg_Prot_Resp_Def *resp_pkt;
  struct RFCNB_Pkt *pkt;
  int prots_len, i, pkt_len, prot, alloc_len;
  char *p;

  /* Figure out how long the prot list will be and allocate space for it */

  prots_len = 0;

  for (i = 0; Prots[i] != NULL; i++) {

    prots_len = prots_len + strlen(Prots[i]) + 2; /* Account for null etc */

  }

  /* The -1 accounts for the one byte smb_buf we have because some systems */
  /* don't like char msg_buf[]                                             */

  pkt_len = SMB_negp_len + prots_len;

  /* Make sure that the pkt len is long enough for the max response ...   */
  /* Which is a problem, because the encryption key len eec may be long   */

  if (pkt_len < (SMB_hdr_wct_offset + (19 * 2) + 40)) {

    alloc_len = SMB_hdr_wct_offset + (19 * 2) + 40;

  }
  else {

    alloc_len = pkt_len;

  }

  pkt = (struct RFCNB_Pkt *)RFCNB_Alloc_Pkt(alloc_len);

  if (pkt == NULL) {

    SMBlib_errno = SMBlibE_NoSpace;
    return(SMBlibE_BAD);

  }

  /* Now plug in the bits we need */

  bzero(SMB_Hdr(pkt), SMB_negp_len);
  SIVAL(SMB_Hdr(pkt), SMB_hdr_idf_offset, SMB_DEF_IDF);  /* Plunk in IDF */
  *(SMB_Hdr(pkt) + SMB_hdr_com_offset) = SMBnegprot;
  SSVAL(SMB_Hdr(pkt), SMB_hdr_pid_offset, Con_Handle -> pid);
  SSVAL(SMB_Hdr(pkt), SMB_hdr_tid_offset, 0);
  SSVAL(SMB_Hdr(pkt), SMB_hdr_mid_offset, Con_Handle -> mid);
  SSVAL(SMB_Hdr(pkt), SMB_hdr_uid_offset, Con_Handle -> uid);
  *(SMB_Hdr(pkt) + SMB_hdr_wct_offset) = 0;

  SSVAL(SMB_Hdr(pkt), SMB_negp_bcc_offset, prots_len);

  /* Now copy the prot strings in with the right stuff */

  p = (char *)(SMB_Hdr(pkt) + SMB_negp_buf_offset);

  for (i = 0; Prots[i] != NULL; i++) {

    *p = SMBdialectID;
    strcpy(p + 1, Prots[i]);
    p = p + strlen(Prots[i]) + 2; /* Adjust len of p for null plus dialectID */

  }

  /* Now send the packet and sit back ... */

  if (RFCNB_Send(Con_Handle -> Trans_Connect, pkt, pkt_len) < 0){


#ifdef DEBUG
    fprintf(stderr, "Error sending negotiate protocol\n");
#endif

    RFCNB_Free_Pkt(pkt);
    SMBlib_errno = -SMBlibE_SendFailed; /* Failed, check lower layer errno */
    return(SMBlibE_BAD);

  }

  /* Now get the response ... */

  if (RFCNB_Recv(Con_Handle -> Trans_Connect, pkt, alloc_len) < 0) {

#ifdef DEBUG
    fprintf(stderr, "Error receiving response to negotiate\n");
#endif

    RFCNB_Free_Pkt(pkt);
    SMBlib_errno = -SMBlibE_RecvFailed; /* Failed, check lower layer errno */
    return(SMBlibE_BAD);

  }

  if (CVAL(SMB_Hdr(pkt), SMB_hdr_rcls_offset) != SMBC_SUCCESS) {  /* Process error */

#ifdef DEBUG
    fprintf(stderr, "SMB_Negotiate failed with errorclass = %i, Error Code = %i\n",
	    CVAL(SMB_Hdr(pkt), SMB_hdr_rcls_offset),
	    SVAL(SMB_Hdr(pkt), SMB_hdr_err_offset));
#endif

    SMBlib_SMB_Error = IVAL(SMB_Hdr(pkt), SMB_hdr_rcls_offset);
    RFCNB_Free_Pkt(pkt);
    SMBlib_errno = SMBlibE_Remote;
    return(SMBlibE_BAD);

  }
  
  if (SVAL(SMB_Hdr(pkt), SMB_negrCP_idx_offset) == 0xFFFF) {

#ifdef DEBUG
    fprintf(stderr, "None of our protocols was accepted ... ");
#endif

    RFCNB_Free_Pkt(pkt);
    SMBlib_errno = SMBlibE_NegNoProt;
    return(SMBlibE_BAD);

  }

  /* Now, unpack the info from the response, if any and evaluate the proto */
  /* selected. We must make sure it is one we like ...                     */

  Con_Handle -> prot_IDX = prot = SVAL(SMB_Hdr(pkt), SMB_negrCP_idx_offset);
  Con_Handle -> protocol = SMB_Figure_Protocol(Prots, prot);

  if (Con_Handle -> protocol == SMB_P_Unknown) { /* No good ... */

    RFCNB_Free_Pkt(pkt);
    SMBlib_errno = SMBlibE_ProtUnknown;
    return(SMBlibE_BAD);

  }
  
  switch (CVAL(SMB_Hdr(pkt), SMB_hdr_wct_offset)) {

  case 0x01:      /* No more info ... */

    break;

  case 13:        /* Up to and including LanMan 2.1 */

    Con_Handle -> Security = SVAL(SMB_Hdr(pkt), SMB_negrLM_sec_offset);
    Con_Handle -> encrypt_passwords = ((Con_Handle -> Security & SMB_sec_encrypt_mask) != 0x00);
    Con_Handle -> Security = Con_Handle -> Security & SMB_sec_user_mask;

    Con_Handle -> max_xmit = SVAL(SMB_Hdr(pkt), SMB_negrLM_mbs_offset);
    Con_Handle -> MaxMPX = SVAL(SMB_Hdr(pkt), SMB_negrLM_mmc_offset);
    Con_Handle -> MaxVC = SVAL(SMB_Hdr(pkt), SMB_negrLM_mnv_offset);
    Con_Handle -> Raw_Support = SVAL(SMB_Hdr(pkt), SMB_negrLM_rm_offset);
    Con_Handle -> SessionKey = IVAL(SMB_Hdr(pkt), SMB_negrLM_sk_offset);
    Con_Handle -> SvrTZ = SVAL(SMB_Hdr(pkt), SMB_negrLM_stz_offset);
    Con_Handle -> Encrypt_Key_Len = SVAL(SMB_Hdr(pkt), SMB_negrLM_ekl_offset);
    
    p = (SMB_Hdr(pkt) + SMB_negrLM_buf_offset);
    fprintf(stderr, "%d", (char *)(SMB_Hdr(pkt) + SMB_negrLM_buf_offset));
    memcpy(Con_Handle->Encrypt_Key, p, 8);

    p = (SMB_Hdr(pkt) + SMB_negrLM_buf_offset + Con_Handle -> Encrypt_Key_Len);

    strncpy(p, Con_Handle -> Svr_PDom, sizeof(Con_Handle -> Svr_PDom) - 1);

    break;

  case 17:        /* NT LM 0.12 and LN LM 1.0 */

    Con_Handle -> Security = SVAL(SMB_Hdr(pkt), SMB_negrNTLM_sec_offset);
    Con_Handle -> encrypt_passwords = ((Con_Handle -> Security & SMB_sec_encrypt_mask) != 0x00);
    Con_Handle -> Security = Con_Handle -> Security & SMB_sec_user_mask;

    Con_Handle -> max_xmit = IVAL(SMB_Hdr(pkt), SMB_negrNTLM_mbs_offset);
    Con_Handle -> MaxMPX = SVAL(SMB_Hdr(pkt), SMB_negrNTLM_mmc_offset);
    Con_Handle -> MaxVC = SVAL(SMB_Hdr(pkt), SMB_negrNTLM_mnv_offset);
    Con_Handle -> MaxRaw = IVAL(SMB_Hdr(pkt), SMB_negrNTLM_mrs_offset);
    Con_Handle -> SessionKey = IVAL(SMB_Hdr(pkt), SMB_negrNTLM_sk_offset);
    Con_Handle -> SvrTZ = SVAL(SMB_Hdr(pkt), SMB_negrNTLM_stz_offset);
    Con_Handle -> Encrypt_Key_Len = CVAL(SMB_Hdr(pkt), SMB_negrNTLM_ekl_offset);

    p = (SMB_Hdr(pkt) + SMB_negrNTLM_buf_offset );
    memcpy(Con_Handle -> Encrypt_Key, p, 8);
    p = (SMB_Hdr(pkt) + SMB_negrNTLM_buf_offset + Con_Handle -> Encrypt_Key_Len);

    strncpy(p, Con_Handle -> Svr_PDom, sizeof(Con_Handle -> Svr_PDom) - 1);

    break;

  default:

#ifdef DEBUG
    fprintf(stderr, "Unknown NegProt response format ... Ignored\n");
    fprintf(stderr, "  wct = %i\n", CVAL(SMB_Hdr(pkt), SMB_hdr_wct_offset));
#endif