smb_subr.c

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    1 /*
    2  * Copyright (c) 2000-2001 Boris Popov
    3  * All rights reserved.
    4  *
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions
    7  * are met:
    8  * 1. Redistributions of source code must retain the above copyright
    9  *    notice, this list of conditions and the following disclaimer.
   10  * 2. Redistributions in binary form must reproduce the above copyright
   11  *    notice, this list of conditions and the following disclaimer in the
   12  *    documentation and/or other materials provided with the distribution.
   13  * 3. All advertising materials mentioning features or use of this software
   14  *    must display the following acknowledgement:
   15  *    This product includes software developed by Boris Popov.
   16  * 4. Neither the name of the author nor the names of any co-contributors
   17  *    may be used to endorse or promote products derived from this software
   18  *    without specific prior written permission.
   19  *
   20  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   30  * SUCH DAMAGE.
   31  *
   32  * $FreeBSD: releng/5.1/sys/netsmb/smb_subr.c 114983 2003-05-13 20:36:02Z jhb $
   33  */
   34 #include <sys/param.h>
   35 #include <sys/systm.h>
   36 #include <sys/endian.h>
   37 #include <sys/kernel.h>
   38 #include <sys/malloc.h>
   39 #include <sys/proc.h>
   40 #include <sys/lock.h>
   41 #include <sys/sysctl.h>
   42 #include <sys/socket.h>
   43 #include <sys/signalvar.h>
   44 #include <sys/mbuf.h>
   45 
   46 #include <sys/iconv.h>
   47 
   48 #include <netsmb/smb.h>
   49 #include <netsmb/smb_conn.h>
   50 #include <netsmb/smb_rq.h>
   51 #include <netsmb/smb_subr.h>
   52 
   53 MALLOC_DEFINE(M_SMBDATA, "SMBDATA", "Misc netsmb data");
   54 MALLOC_DEFINE(M_SMBSTR, "SMBSTR", "netsmb string data");
   55 MALLOC_DEFINE(M_SMBTEMP, "SMBTEMP", "Temp netsmb data");
   56 
   57 smb_unichar smb_unieol = 0;
   58 
   59 void
   60 smb_makescred(struct smb_cred *scred, struct thread *td, struct ucred *cred)
   61 {
   62         if (td) {
   63                 scred->scr_td = td;
   64                 scred->scr_cred = cred ? cred : td->td_ucred;
   65         } else {
   66                 scred->scr_td = NULL;
   67                 scred->scr_cred = cred ? cred : NULL;
   68         }
   69 }
   70 
   71 int
   72 smb_td_intr(struct thread *td)
   73 {
   74         struct proc *p;
   75         sigset_t tmpset;
   76 
   77         if (td == NULL)
   78                 return 0;
   79 
   80         p = td->td_proc;
   81         PROC_LOCK(p);
   82         tmpset = p->p_siglist;
   83         SIGSETOR(tmpset, td->td_siglist);
   84         SIGSETNAND(tmpset, td->td_sigmask);
   85         mtx_lock(&p->p_sigacts->ps_mtx);
   86         SIGSETNAND(tmpset, p->p_sigacts->ps_sigignore);
   87         mtx_unlock(&p->p_sigacts->ps_mtx);
   88         if (SIGNOTEMPTY(td->td_siglist) && SMB_SIGMASK(tmpset)) {
   89                 PROC_UNLOCK(p);
   90                 return EINTR;
   91         }
   92         PROC_UNLOCK(p);
   93         return 0;
   94 }
   95 
   96 char *
   97 smb_strdup(const char *s)
   98 {
   99         char *p;
  100         int len;
  101 
  102         len = s ? strlen(s) + 1 : 1;
  103         p = malloc(len, M_SMBSTR, M_WAITOK);
  104         if (s)
  105                 bcopy(s, p, len);
  106         else
  107                 *p = 0;
  108         return p;
  109 }
  110 
  111 /*
  112  * duplicate string from a user space.
  113  */
  114 char *
  115 smb_strdupin(char *s, int maxlen)
  116 {
  117         char *p, bt;
  118         int len = 0;
  119 
  120         for (p = s; ;p++) {
  121                 if (copyin(p, &bt, 1))
  122                         return NULL;
  123                 len++;
  124                 if (maxlen && len > maxlen)
  125                         return NULL;
  126                 if (bt == 0)
  127                         break;
  128         }
  129         p = malloc(len, M_SMBSTR, M_WAITOK);
  130         copyin(s, p, len);
  131         return p;
  132 }
  133 
  134 /*
  135  * duplicate memory block from a user space.
  136  */
  137 void *
  138 smb_memdupin(void *umem, int len)
  139 {
  140         char *p;
  141 
  142         if (len > 8 * 1024)
  143                 return NULL;
  144         p = malloc(len, M_SMBSTR, M_WAITOK);
  145         if (copyin(umem, p, len) == 0)
  146                 return p;
  147         free(p, M_SMBSTR);
  148         return NULL;
  149 }
  150 
  151 /*
  152  * duplicate memory block in the kernel space.
  153  */
  154 void *
  155 smb_memdup(const void *umem, int len)
  156 {
  157         char *p;
  158 
  159         if (len > 8 * 1024)
  160                 return NULL;
  161         p = malloc(len, M_SMBSTR, M_WAITOK);
  162         if (p == NULL)
  163                 return NULL;
  164         bcopy(umem, p, len);
  165         return p;
  166 }
  167 
  168 void
  169 smb_strfree(char *s)
  170 {
  171         free(s, M_SMBSTR);
  172 }
  173 
  174 void
  175 smb_memfree(void *s)
  176 {
  177         free(s, M_SMBSTR);
  178 }
  179 
  180 void *
  181 smb_zmalloc(unsigned long size, struct malloc_type *type, int flags)
  182 {
  183 
  184         return malloc(size, type, flags | M_ZERO);
  185 }
  186 
  187 void
  188 smb_strtouni(u_int16_t *dst, const char *src)
  189 {
  190         while (*src) {
  191                 *dst++ = htole16(*src++);
  192         }
  193         *dst = 0;
  194 }
  195 
  196 #ifdef SMB_SOCKETDATA_DEBUG
  197 void
  198 m_dumpm(struct mbuf *m) {
  199         char *p;
  200         int len;
  201         printf("d=");
  202         while(m) {
  203                 p=mtod(m,char *);
  204                 len=m->m_len;
  205                 printf("(%d)",len);
  206                 while(len--){
  207                         printf("%02x ",((int)*(p++)) & 0xff);
  208                 }
  209                 m=m->m_next;
  210         };
  211         printf("\n");
  212 }
  213 #endif
  214 
  215 int
  216 smb_maperror(int eclass, int eno)
  217 {
  218         if (eclass == 0 && eno == 0)
  219                 return 0;
  220         switch (eclass) {
  221             case ERRDOS:
  222                 switch (eno) {
  223                     case ERRbadfunc:
  224                     case ERRbadmcb:
  225                     case ERRbadenv:
  226                     case ERRbadformat:
  227                     case ERRrmuns:
  228                         return EINVAL;
  229                     case ERRbadfile:
  230                     case ERRbadpath:
  231                     case ERRremcd:
  232                     case 66:            /* nt returns it when share not available */
  233                     case 67:            /* observed from nt4sp6 when sharename wrong */
  234                         return ENOENT;
  235                     case ERRnofids:
  236                         return EMFILE;
  237                     case ERRnoaccess:
  238                     case ERRbadshare:
  239                         return EACCES;
  240                     case ERRbadfid:
  241                         return EBADF;
  242                     case ERRnomem:
  243                         return ENOMEM;  /* actually remote no mem... */
  244                     case ERRbadmem:
  245                         return EFAULT;
  246                     case ERRbadaccess:
  247                         return EACCES;
  248                     case ERRbaddata:
  249                         return E2BIG;
  250                     case ERRbaddrive:
  251                     case ERRnotready:   /* nt */
  252                         return ENXIO;
  253                     case ERRdiffdevice:
  254                         return EXDEV;
  255                     case ERRnofiles:
  256                         return 0;       /* eeof ? */
  257                         return ETXTBSY;
  258                     case ERRlock:
  259                         return EDEADLK;
  260                     case ERRfilexists:
  261                         return EEXIST;
  262                     case 123:           /* dunno what is it, but samba maps as noent */
  263                         return ENOENT;
  264                     case 145:           /* samba */
  265                         return ENOTEMPTY;
  266                     case 183:
  267                         return EEXIST;
  268                     case ERRquota:
  269                         return EDQUOT;
  270                 }
  271                 break;
  272             case ERRSRV:
  273                 switch (eno) {
  274                     case ERRerror:
  275                         return EINVAL;
  276                     case ERRbadpw:
  277                     case ERRpasswordExpired:
  278                         return EAUTH;
  279                     case ERRaccess:
  280                         return EACCES;
  281                     case ERRinvnid:
  282                         return ENETRESET;
  283                     case ERRinvnetname:
  284                         SMBERROR("NetBIOS name is invalid\n");
  285                         return EAUTH;
  286                     case 3:             /* reserved and returned */
  287                         return EIO;
  288                     case ERRaccountExpired:
  289                     case ERRbadClient:
  290                     case ERRbadLogonTime:
  291                         return EPERM;
  292                     case ERRnosupport:
  293                         return EBADRPC;
  294                 }
  295                 break;
  296             case ERRHRD:
  297                 switch (eno) {
  298                     case ERRnowrite:
  299                         return EROFS;
  300                     case ERRbadunit:
  301                         return ENODEV;
  302                     case ERRnotready:
  303                     case ERRbadcmd:
  304                     case ERRdata:
  305                         return EIO;
  306                     case ERRbadreq:
  307                         return EBADRPC;
  308                     case ERRbadshare:
  309                         return ETXTBSY;
  310                     case ERRlock:
  311                         return EDEADLK;
  312                 }
  313                 break;
  314         }
  315         SMBERROR("Unmapped error %d:%d\n", eclass, eno);
  316         return EBADRPC;
  317 }
  318 
  319 static int
  320 smb_copy_iconv(struct mbchain *mbp, c_caddr_t src, caddr_t dst, size_t len)
  321 {
  322         size_t outlen = len;
  323 
  324         return iconv_conv((struct iconv_drv*)mbp->mb_udata, &src, &len, &dst, &outlen);
  325 }
  326 
  327 int
  328 smb_put_dmem(struct mbchain *mbp, struct smb_vc *vcp, const char *src,
  329         int size, int caseopt)
  330 {
  331         struct iconv_drv *dp = vcp->vc_toserver;
  332 
  333         if (size == 0)
  334                 return 0;
  335         if (dp == NULL) {
  336                 return mb_put_mem(mbp, src, size, MB_MSYSTEM);
  337         }
  338         mbp->mb_copy = smb_copy_iconv;
  339         mbp->mb_udata = dp;
  340         return mb_put_mem(mbp, src, size, MB_MCUSTOM);
  341 }
  342 
  343 int
  344 smb_put_dstring(struct mbchain *mbp, struct smb_vc *vcp, const char *src,
  345         int caseopt)
  346 {
  347         int error;
  348 
  349         error = smb_put_dmem(mbp, vcp, src, strlen(src), caseopt);
  350         if (error)
  351                 return error;
  352         return mb_put_uint8(mbp, 0);
  353 }
  354 
  355 int
  356 smb_put_asunistring(struct smb_rq *rqp, const char *src)
  357 {
  358         struct mbchain *mbp = &rqp->sr_rq;
  359         struct iconv_drv *dp = rqp->sr_vc->vc_toserver;
  360         u_char c;
  361         int error;
  362 
  363         while (*src) {
  364                 iconv_convmem(dp, &c, src++, 1);
  365                 error = mb_put_uint16le(mbp, c);
  366                 if (error)
  367                         return error;
  368         }
  369         return mb_put_uint16le(mbp, 0);
  370 }
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FreeBSD/Linux Kernel Cross Reference sys/netsmb/smb_subr.c

FreeBSD/Linux Kernel Cross Reference
sys/netsmb/smb_subr.c
