/*- * SPDX-License-Identifier: BSD-2-Clause * * Copyright (c) 2000-2001 Boris Popov * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include <sys/param.h> #include <sys/systm.h> #include <sys/endian.h> #include <sys/kernel.h> #include <sys/malloc.h> #include <sys/proc.h> #include <sys/lock.h> #include <sys/sysctl.h> #include <sys/socket.h> #include <sys/signalvar.h> #include <sys/mbuf.h> #include <sys/iconv.h> #include <netsmb/smb.h> #include <netsmb/smb_conn.h> #include <netsmb/smb_rq.h> #include <netsmb/smb_subr.h> static MALLOC_DEFINE(M_SMBDATA, "SMBDATA", "Misc netsmb data"); static MALLOC_DEFINE(M_SMBSTR, "SMBSTR", "netsmb string data"); MALLOC_DEFINE(M_SMBTEMP, "SMBTEMP", "Temp netsmb data"); smb_unichar smb_unieol = 0; void smb_makescred(struct smb_cred *scred, struct thread *td, struct ucred *cred) { if (td) { scred->scr_td = td; scred->scr_cred = cred ? cred : td->td_ucred; } else { scred->scr_td = NULL; scred->scr_cred = cred ? cred : NULL; } } int smb_td_intr(struct thread *td) { struct proc *p; sigset_t tmpset; if (td == NULL) return 0; p = td->td_proc; PROC_LOCK(p); tmpset = p->p_siglist; SIGSETOR(tmpset, td->td_siglist); SIGSETNAND(tmpset, td->td_sigmask); mtx_lock(&p->p_sigacts->ps_mtx); SIGSETNAND(tmpset, p->p_sigacts->ps_sigignore); mtx_unlock(&p->p_sigacts->ps_mtx); if (SIGNOTEMPTY(td->td_siglist) && SMB_SIGMASK(tmpset)) { PROC_UNLOCK(p); return EINTR; } PROC_UNLOCK(p); return 0; } char * smb_strdup(const char *s) { char *p; size_t len; len = s ? strlen(s) + 1 : 1; p = malloc(len, M_SMBSTR, M_WAITOK); if (s) bcopy(s, p, len); else *p = 0; return p; } /* * duplicate string from a user space. */ char * smb_strdupin(char *s, size_t maxlen) { char *p; int error; p = malloc(maxlen + 1, M_SMBSTR, M_WAITOK); error = copyinstr(s, p, maxlen + 1, NULL); if (error) { free(p, M_SMBSTR); return (NULL); } return p; } /* * duplicate memory block from a user space. */ void * smb_memdupin(void *umem, size_t len) { char *p; if (len > 8 * 1024) return NULL; p = malloc(len, M_SMBSTR, M_WAITOK); if (copyin(umem, p, len) == 0) return p; free(p, M_SMBSTR); return NULL; } /* * duplicate memory block in the kernel space. */ void * smb_memdup(const void *umem, int len) { char *p; if (len > 8 * 1024) return NULL; p = malloc(len, M_SMBSTR, M_WAITOK); if (p == NULL) return NULL; bcopy(umem, p, len); return p; } void smb_strfree(char *s) { free(s, M_SMBSTR); } void smb_memfree(void *s) { free(s, M_SMBSTR); } void * smb_zmalloc(size_t size, struct malloc_type *type, int flags) { return malloc(size, type, flags | M_ZERO); } void smb_strtouni(u_int16_t *dst, const char *src) { while (*src) { *dst++ = htole16(*src++); } *dst = 0; } #ifdef SMB_SOCKETDATA_DEBUG void m_dumpm(struct mbuf *m) { char *p; size_t len; printf("d="); while(m) { p=mtod(m,char *); len=m->m_len; printf("(%zu)",len); while(len--){ printf("%02x ",((int)*(p++)) & 0xff); } m=m->m_next; } printf("\n"); } #endif int smb_maperror(int eclass, int eno) { if (eclass == 0 && eno == 0) return 0; switch (eclass) { case ERRDOS: switch (eno) { case ERRbadfunc: case ERRbadmcb: case ERRbadenv: case ERRbadformat: case ERRrmuns: return EINVAL; case ERRbadfile: case ERRbadpath: case ERRremcd: case 66: /* nt returns it when share not available */ case 67: /* observed from nt4sp6 when sharename wrong */ return ENOENT; case ERRnofids: return EMFILE; case ERRnoaccess: case ERRbadshare: return EACCES; case ERRbadfid: return EBADF; case ERRnomem: return ENOMEM; /* actually remote no mem... */ case ERRbadmem: return EFAULT; case ERRbadaccess: return EACCES; case ERRbaddata: return E2BIG; case ERRbaddrive: case ERRnotready: /* nt */ return ENXIO; case ERRdiffdevice: return EXDEV; case ERRnofiles: return 0; /* eeof ? */ return ETXTBSY; case ERRlock: return EDEADLK; case ERRfilexists: return EEXIST; case 123: /* dunno what is it, but samba maps as noent */ return ENOENT; case 145: /* samba */ return ENOTEMPTY; case ERRnotlocked: return 0; /* file become unlocked */ case 183: return EEXIST; case ERRquota: return EDQUOT; } break; case ERRSRV: switch (eno) { case ERRerror: return EINVAL; case ERRbadpw: case ERRpasswordExpired: return EAUTH; case ERRaccess: return EACCES; case ERRinvnid: return ENETRESET; case ERRinvnetname: SMBERROR("NetBIOS name is invalid\n"); return EAUTH; case 3: /* reserved and returned */ return EIO; case ERRaccountExpired: case ERRbadClient: case ERRbadLogonTime: return EPERM; case ERRnosupport: return EBADRPC; } break; case ERRHRD: switch (eno) { case ERRnowrite: return EROFS; case ERRbadunit: return ENODEV; case ERRnotready: case ERRbadcmd: case ERRdata: return EIO; case ERRbadreq: return EBADRPC; case ERRbadshare: return ETXTBSY; case ERRlock: return EDEADLK; } break; } SMBERROR("Unmapped error %d:%d\n", eclass, eno); return EBADRPC; } static int smb_copy_iconv(struct mbchain *mbp, c_caddr_t src, caddr_t dst, size_t *srclen, size_t *dstlen) { int error; size_t inlen = *srclen, outlen = *dstlen; error = iconv_conv((struct iconv_drv*)mbp->mb_udata, &src, &inlen, &dst, &outlen); if (inlen != *srclen || outlen != *dstlen) { *srclen -= inlen; *dstlen -= outlen; return 0; } else return error; } int smb_put_dmem(struct mbchain *mbp, struct smb_vc *vcp, const char *src, size_t size, int caseopt) { struct iconv_drv *dp = vcp->vc_toserver; if (size == 0) return 0; if (dp == NULL) { return mb_put_mem(mbp, src, size, MB_MSYSTEM); } mbp->mb_copy = smb_copy_iconv; mbp->mb_udata = dp; if (SMB_UNICODE_STRINGS(vcp)) mb_put_padbyte(mbp); return mb_put_mem(mbp, src, size, MB_MCUSTOM); } int smb_put_dstring(struct mbchain *mbp, struct smb_vc *vcp, const char *src, int caseopt) { int error; error = smb_put_dmem(mbp, vcp, src, strlen(src), caseopt); if (error) return error; if (SMB_UNICODE_STRINGS(vcp)) return mb_put_uint16le(mbp, 0); return mb_put_uint8(mbp, 0); } int smb_put_asunistring(struct smb_rq *rqp, const char *src) { struct mbchain *mbp = &rqp->sr_rq; struct iconv_drv *dp = rqp->sr_vc->vc_toserver; u_char c; int error; while (*src) { iconv_convmem(dp, &c, src++, 1); error = mb_put_uint16le(mbp, c); if (error) return error; } return mb_put_uint16le(mbp, 0); }