29ad26f932
Use mchain API to work with mbuf chains. Do not depend on INET and IPX options. Allocate ncp_rq structure dynamically to prevent possible stack overflows. Let ncp_request() dispose control structure if request failed. Move all NCP wrappers to ncp_ncp.c file and all NCP request processing functions to ncp_rq.c file. Improve reconnection logic. Misc style fixes.
170 lines
6.2 KiB
C
170 lines
6.2 KiB
C
/*
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* Copyright (c) 1999, 2000, 2001 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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* $FreeBSD$
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*/
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#ifndef _NETNCP_NCP_RQ_H_
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#define _NETNCP_NCP_RQ_H_
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#include <machine/endian.h>
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#define getb(buf,ofs) (((const u_int8_t *)(buf))[ofs])
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#define setb(buf,ofs,val) (((u_int8_t*)(buf))[ofs])=val
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#define getbw(buf,ofs) ((u_int16_t)(getb(buf,ofs)))
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#if (BYTE_ORDER == LITTLE_ENDIAN)
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#define getwle(buf,ofs) (*((u_int16_t*)(&((u_int8_t*)(buf))[ofs])))
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#define getdle(buf,ofs) (*((u_int32_t*)(&((u_int8_t*)(buf))[ofs])))
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#define getwbe(buf,ofs) (ntohs(getwle(buf,ofs)))
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#define getdbe(buf,ofs) (ntohl(getdle(buf,ofs)))
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#define setwle(buf,ofs,val) getwle(buf,ofs)=val
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#define setwbe(buf,ofs,val) getwle(buf,ofs)=htons(val)
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#define setdle(buf,ofs,val) getdle(buf,ofs)=val
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#define setdbe(buf,ofs,val) getdle(buf,ofs)=htonl(val)
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#define htoles(x) ((u_int16_t)(x))
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#define letohs(x) ((u_int16_t)(x))
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#define htolel(x) ((u_int32_t)(x))
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#define letohl(x) ((u_int32_t)(x))
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#else
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#error "Macros for Big-Endians are incomplete"
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#define getwle(buf,ofs) ((u_int16_t)(getb(buf, ofs) | (getb(buf, ofs + 1) << 8)))
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#define getdle(buf,ofs) ((u_int32_t)(getb(buf, ofs) | \
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(getb(buf, ofs + 1) << 8) | \
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(getb(buf, ofs + 2) << 16) | \
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(getb(buf, ofs + 3) << 24)))
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#define getwbe(buf,ofs) (*((u_int16_t*)(&((u_int8_t*)(buf))[ofs])))
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#define getdbe(buf,ofs) (*((u_int32_t*)(&((u_int8_t*)(buf))[ofs])))
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/*
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#define setwle(buf,ofs,val) getwle(buf,ofs)=val
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#define setdle(buf,ofs,val) getdle(buf,ofs)=val
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*/
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#define setwbe(buf,ofs,val) getwle(buf,ofs)=val
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#define setdbe(buf,ofs,val) getdle(buf,ofs)=val
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/*
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#define htoles(x) ((u_int16_t)(x))
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#define letohs(x) ((u_int16_t)(x))
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#define htolel(x) ((u_int32_t)(x))
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#define letohl(x) ((u_int32_t)(x))
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*/
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#endif
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#ifdef _KERNEL
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#include <sys/mchain.h>
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#define NCPR_ALLOCED 0x0001 /* request structure was allocated */
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#define NCPR_DONTFREEONERR 0x0002 /* do not free structure on error */
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/*
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* Structure to prepare ncp request and receive reply
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*/
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struct ncp_rq {
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int nr_flags;
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struct mbchain rq;
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struct mdchain rp;
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int nr_minrplen; /* minimal rp size (-1 if not known) */
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int nr_rpsize; /* reply size minus ncp header */
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int nr_cc; /* completion code */
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int nr_cs; /* connection state */
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struct proc * nr_p; /* proc that did rq */
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struct ucred * nr_cred; /* user that did rq */
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int rexmit;
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struct ncp_conn*nr_conn; /* back link */
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};
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int ncp_rq_alloc(u_int8_t fn, struct ncp_conn *ncp, struct proc *p,
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struct ucred *cred, struct ncp_rq **rqpp);
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int ncp_rq_alloc_any(u_int32_t ptype, u_int8_t fn, struct ncp_conn *ncp,
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struct proc *p, struct ucred *cred, struct ncp_rq **rqpp);
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int ncp_rq_alloc_subfn(u_int8_t fn, u_int8_t subfn, struct ncp_conn *ncp,
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struct proc *p, struct ucred *cred, struct ncp_rq **rqpp);
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int ncp_rq_init_any(struct ncp_rq *rqp, u_int32_t ptype, u_int8_t fn,
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struct ncp_conn *ncp,
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struct proc *p, struct ucred *cred);
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void ncp_rq_done(struct ncp_rq *rqp);
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int ncp_request(struct ncp_rq *rqp);
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int ncp_request_int(struct ncp_rq *rqp);
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struct ncp_nlstables;
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int ncp_rq_pathstring(struct ncp_rq *rqp, int size, const char *name, struct ncp_nlstables*);
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int ncp_rq_dbase_path(struct ncp_rq *, u_int8_t vol_num,
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u_int32_t dir_base, int namelen, u_char *name, struct ncp_nlstables *nt);
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int ncp_rq_pstring(struct ncp_rq *rqp, const char *s);
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void ncp_sign_init(const char *logindata, char *sign_root);
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#else /* ifdef _KERNEL */
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#define DECLARE_RQ struct ncp_buf conn1, *conn=&conn1
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#define ncp_add_byte(conn,x) (conn)->packet[(conn)->rqsize++]=x
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struct ncp_buf;
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__BEGIN_DECLS
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void ncp_init_request(struct ncp_buf *);
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void ncp_init_request_s(struct ncp_buf *, int);
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void ncp_add_word_lh(struct ncp_buf *, u_int16_t);
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void ncp_add_dword_lh(struct ncp_buf *, u_int32_t);
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void ncp_add_word_hl(struct ncp_buf *, u_int16_t);
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void ncp_add_dword_hl(struct ncp_buf *, u_int32_t);
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void ncp_add_mem(struct ncp_buf *, const void *, int);
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void ncp_add_mem_nls(struct ncp_buf *, const void *, int);
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void ncp_add_pstring(struct ncp_buf *, const char *);
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void ncp_add_handle_path(struct ncp_buf *, nuint32, nuint32, int, const char *);
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#define ncp_reply_data(conn,offset) ((conn)->packet+offset)
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#define ncp_reply_byte(conn,offset) (*(u_int8_t*)(ncp_reply_data(conn, offset)))
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u_int16_t ncp_reply_word_hl(struct ncp_buf *, int);
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u_int16_t ncp_reply_word_lh(struct ncp_buf *, int);
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u_int32_t ncp_reply_dword_hl(struct ncp_buf *, int);
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u_int32_t ncp_reply_dword_lh(struct ncp_buf *, int);
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static __inline void
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ConvertToNWfromDWORD(u_int32_t sfd, ncp_fh *fh) {
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fh->val1 = (fh->val.val32 = sfd);
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return;
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}
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__END_DECLS
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#endif /* ifdef _KERNEL */
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#endif /* !_NETNCP_NCP_RQ_H_ */
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