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-rw-r--r--libc/inet/rpc/xdr_rec.c628
1 files changed, 0 insertions, 628 deletions
diff --git a/libc/inet/rpc/xdr_rec.c b/libc/inet/rpc/xdr_rec.c
deleted file mode 100644
index c17bfa12b..000000000
--- a/libc/inet/rpc/xdr_rec.c
+++ /dev/null
@@ -1,628 +0,0 @@
-/*
- * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
- * unrestricted use provided that this legend is included on all tape
- * media and as a part of the software program in whole or part. Users
- * may copy or modify Sun RPC without charge, but are not authorized
- * to license or distribute it to anyone else except as part of a product or
- * program developed by the user.
- *
- * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
- * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
- *
- * Sun RPC is provided with no support and without any obligation on the
- * part of Sun Microsystems, Inc. to assist in its use, correction,
- * modification or enhancement.
- *
- * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
- * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
- * OR ANY PART THEREOF.
- *
- * In no event will Sun Microsystems, Inc. be liable for any lost revenue
- * or profits or other special, indirect and consequential damages, even if
- * Sun has been advised of the possibility of such damages.
- *
- * Sun Microsystems, Inc.
- * 2550 Garcia Avenue
- * Mountain View, California 94043
- */
-
-/*
- * xdr_rec.c, Implements TCP/IP based XDR streams with a "record marking"
- * layer above tcp (for rpc's use).
- *
- * Copyright (C) 1984, Sun Microsystems, Inc.
- *
- * These routines interface XDRSTREAMS to a tcp/ip connection.
- * There is a record marking layer between the xdr stream
- * and the tcp transport level. A record is composed on one or more
- * record fragments. A record fragment is a thirty-two bit header followed
- * by n bytes of data, where n is contained in the header. The header
- * is represented as a htonl(u_long). The high order bit encodes
- * whether or not the fragment is the last fragment of the record
- * (1 => fragment is last, 0 => more fragments to follow.
- * The other 31 bits encode the byte length of the fragment.
- */
-
-#include <stdio.h>
-#include <string.h>
-#include <unistd.h>
-#include "rpc_private.h"
-
-static bool_t xdrrec_getbytes (XDR *, caddr_t, u_int);
-static bool_t xdrrec_putbytes (XDR *, const char *, u_int);
-static bool_t xdrrec_getint32 (XDR *, int32_t *);
-static bool_t xdrrec_putint32 (XDR *, const int32_t *);
-#if ULONG_MAX != 0xffffffff
-static bool_t xdrrec_getlong (XDR *, long *);
-static bool_t xdrrec_putlong (XDR *, const long *);
-#endif
-static u_int xdrrec_getpos (const XDR *);
-static bool_t xdrrec_setpos (XDR *, u_int);
-static int32_t *xdrrec_inline (XDR *, u_int);
-static void xdrrec_destroy (XDR *);
-
-static const struct xdr_ops xdrrec_ops = {
-#if ULONG_MAX == 0xffffffff
- (bool_t (*)(XDR *, long *)) xdrrec_getint32,
- (bool_t (*)(XDR *, const long *)) xdrrec_putint32,
-#else
- xdrrec_getlong,
- xdrrec_putlong,
-#endif
- xdrrec_getbytes,
- xdrrec_putbytes,
- xdrrec_getpos,
- xdrrec_setpos,
- xdrrec_inline,
- xdrrec_destroy,
- xdrrec_getint32,
- xdrrec_putint32
-};
-
-/*
- * A record is composed of one or more record fragments.
- * A record fragment is a two-byte header followed by zero to
- * 2**32-1 bytes. The header is treated as a long unsigned and is
- * encode/decoded to the network via htonl/ntohl. The low order 31 bits
- * are a byte count of the fragment. The highest order bit is a boolean:
- * 1 => this fragment is the last fragment of the record,
- * 0 => this fragment is followed by more fragment(s).
- *
- * The fragment/record machinery is not general; it is constructed to
- * meet the needs of xdr and rpc based on tcp.
- */
-
-#define LAST_FRAG (1UL << 31)
-
-typedef struct rec_strm
- {
- caddr_t tcp_handle;
- caddr_t the_buffer;
- /*
- * out-going bits
- */
- int (*writeit) (char *, char *, int);
- caddr_t out_base; /* output buffer (points to frag header) */
- caddr_t out_finger; /* next output position */
- caddr_t out_boundry; /* data cannot up to this address */
- u_int32_t *frag_header; /* beginning of curren fragment */
- bool_t frag_sent; /* true if buffer sent in middle of record */
- /*
- * in-coming bits
- */
- int (*readit) (char *, char *, int);
- u_long in_size; /* fixed size of the input buffer */
- caddr_t in_base;
- caddr_t in_finger; /* location of next byte to be had */
- caddr_t in_boundry; /* can read up to this location */
- long fbtbc; /* fragment bytes to be consumed */
- bool_t last_frag;
- u_int sendsize;
- u_int recvsize;
- }
-RECSTREAM;
-
-static u_int fix_buf_size (u_int) internal_function;
-static bool_t skip_input_bytes (RECSTREAM *, long) internal_function;
-static bool_t flush_out (RECSTREAM *, bool_t) internal_function;
-static bool_t set_input_fragment (RECSTREAM *) internal_function;
-static bool_t get_input_bytes (RECSTREAM *, caddr_t, int) internal_function;
-
-/*
- * Create an xdr handle for xdrrec
- * xdrrec_create fills in xdrs. Sendsize and recvsize are
- * send and recv buffer sizes (0 => use default).
- * tcp_handle is an opaque handle that is passed as the first parameter to
- * the procedures readit and writeit. Readit and writeit are read and
- * write respectively. They are like the system
- * calls expect that they take an opaque handle rather than an fd.
- */
-void
-xdrrec_create (XDR *xdrs, u_int sendsize,
- u_int recvsize, caddr_t tcp_handle,
- int (*readit) (char *, char *, int),
- int (*writeit) (char *, char *, int))
-{
- RECSTREAM *rstrm = (RECSTREAM *) mem_alloc (sizeof (RECSTREAM));
- caddr_t tmp;
- char *buf;
-
- sendsize = fix_buf_size (sendsize);
- recvsize = fix_buf_size (recvsize);
- buf = mem_alloc (sendsize + recvsize + BYTES_PER_XDR_UNIT);
-
- if (rstrm == NULL || buf == NULL)
- {
- (void) fputs ("xdrrec_create: out of memory\n", stderr);
- mem_free (rstrm, sizeof (RECSTREAM));
- mem_free (buf, sendsize + recvsize + BYTES_PER_XDR_UNIT);
- /*
- * This is bad. Should rework xdrrec_create to
- * return a handle, and in this case return NULL
- */
- return;
- }
- /*
- * adjust sizes and allocate buffer quad byte aligned
- */
- rstrm->sendsize = sendsize;
- rstrm->recvsize = recvsize;
- rstrm->the_buffer = buf;
- tmp = rstrm->the_buffer;
- if ((size_t)tmp % BYTES_PER_XDR_UNIT)
- tmp += BYTES_PER_XDR_UNIT - (size_t)tmp % BYTES_PER_XDR_UNIT;
- rstrm->out_base = tmp;
- rstrm->in_base = tmp + sendsize;
- /*
- * now the rest ...
- */
- xdrs->x_ops = &xdrrec_ops;
- xdrs->x_private = (caddr_t) rstrm;
- rstrm->tcp_handle = tcp_handle;
- rstrm->readit = readit;
- rstrm->writeit = writeit;
- rstrm->out_finger = rstrm->out_boundry = rstrm->out_base;
- rstrm->frag_header = (u_int32_t *) rstrm->out_base;
- rstrm->out_finger += 4;
- rstrm->out_boundry += sendsize;
- rstrm->frag_sent = FALSE;
- rstrm->in_size = recvsize;
- rstrm->in_boundry = rstrm->in_base;
- rstrm->in_finger = (rstrm->in_boundry += recvsize);
- rstrm->fbtbc = 0;
- rstrm->last_frag = TRUE;
-}
-libc_hidden_def(xdrrec_create)
-
-
-/*
- * The routines defined below are the xdr ops which will go into the
- * xdr handle filled in by xdrrec_create.
- */
-
-static bool_t
-xdrrec_getint32 (XDR *xdrs, int32_t *ip)
-{
- RECSTREAM *rstrm = (RECSTREAM *) xdrs->x_private;
- int32_t *bufip = (int32_t *) rstrm->in_finger;
- int32_t mylong;
-
- /* first try the inline, fast case */
- if (rstrm->fbtbc >= BYTES_PER_XDR_UNIT &&
- rstrm->in_boundry - (char *) bufip >= BYTES_PER_XDR_UNIT)
- {
- *ip = ntohl (*bufip);
- rstrm->fbtbc -= BYTES_PER_XDR_UNIT;
- rstrm->in_finger += BYTES_PER_XDR_UNIT;
- }
- else
- {
- if (!xdrrec_getbytes (xdrs, (caddr_t) &mylong,
- BYTES_PER_XDR_UNIT))
- return FALSE;
- *ip = ntohl (mylong);
- }
- return TRUE;
-}
-
-#if ULONG_MAX != 0xffffffff
-static bool_t
-xdrrec_getlong (XDR *xdrs, long *lp)
-{
- int32_t v;
- bool_t r = xdrrec_getint32 (xdrs, &v);
- *lp = v;
- return r;
-}
-#endif
-
-static bool_t
-xdrrec_putint32 (XDR *xdrs, const int32_t *ip)
-{
- RECSTREAM *rstrm = (RECSTREAM *) xdrs->x_private;
- int32_t *dest_ip = (int32_t *) rstrm->out_finger;
-
- if ((rstrm->out_finger += BYTES_PER_XDR_UNIT) > rstrm->out_boundry)
- {
- /*
- * this case should almost never happen so the code is
- * inefficient
- */
- rstrm->out_finger -= BYTES_PER_XDR_UNIT;
- rstrm->frag_sent = TRUE;
- if (!flush_out (rstrm, FALSE))
- return FALSE;
- dest_ip = (int32_t *) rstrm->out_finger;
- rstrm->out_finger += BYTES_PER_XDR_UNIT;
- }
- *dest_ip = htonl (*ip);
- return TRUE;
-}
-
-#if ULONG_MAX != 0xffffffff
-static bool_t
-xdrrec_putlong (XDR *xdrs, const long *lp)
-{
- int32_t v = *lp;
- return xdrrec_putint32 (xdrs, &v);
-}
-#endif
-
-static bool_t /* must manage buffers, fragments, and records */
-xdrrec_getbytes (XDR *xdrs, caddr_t addr, u_int len)
-{
- RECSTREAM *rstrm = (RECSTREAM *) xdrs->x_private;
- u_int current;
-
- while (len > 0)
- {
- current = rstrm->fbtbc;
- if (current == 0)
- {
- if (rstrm->last_frag)
- return FALSE;
- if (!set_input_fragment (rstrm))
- return FALSE;
- continue;
- }
- current = (len < current) ? len : current;
- if (!get_input_bytes (rstrm, addr, current))
- return FALSE;
- addr += current;
- rstrm->fbtbc -= current;
- len -= current;
- }
- return TRUE;
-}
-
-static bool_t
-xdrrec_putbytes (XDR *xdrs, const char *addr, u_int len)
-{
- RECSTREAM *rstrm = (RECSTREAM *) xdrs->x_private;
- u_int current;
-
- while (len > 0)
- {
- current = rstrm->out_boundry - rstrm->out_finger;
- current = (len < current) ? len : current;
- memcpy (rstrm->out_finger, addr, current);
- rstrm->out_finger += current;
- addr += current;
- len -= current;
- if (rstrm->out_finger == rstrm->out_boundry && len > 0)
- {
- rstrm->frag_sent = TRUE;
- if (!flush_out (rstrm, FALSE))
- return FALSE;
- }
- }
- return TRUE;
-}
-
-static u_int
-xdrrec_getpos (const XDR *xdrs)
-{
- RECSTREAM *rstrm = (RECSTREAM *) xdrs->x_private;
- long pos;
-
- pos = lseek ((int) (long) rstrm->tcp_handle, (long) 0, 1);
- if (pos != -1)
- switch (xdrs->x_op)
- {
-
- case XDR_ENCODE:
- pos += rstrm->out_finger - rstrm->out_base;
- break;
-
- case XDR_DECODE:
- pos -= rstrm->in_boundry - rstrm->in_finger;
- break;
-
- default:
- pos = (u_int) - 1;
- break;
- }
- return (u_int) pos;
-}
-
-static bool_t
-xdrrec_setpos (XDR *xdrs, u_int pos)
-{
- RECSTREAM *rstrm = (RECSTREAM *) xdrs->x_private;
- u_int currpos = xdrrec_getpos (xdrs);
- int delta = currpos - pos;
- caddr_t newpos;
-
- if ((int) currpos != -1)
- switch (xdrs->x_op)
- {
-
- case XDR_ENCODE:
- newpos = rstrm->out_finger - delta;
- if (newpos > (caddr_t) rstrm->frag_header &&
- newpos < rstrm->out_boundry)
- {
- rstrm->out_finger = newpos;
- return TRUE;
- }
- break;
-
- case XDR_DECODE:
- newpos = rstrm->in_finger - delta;
- if ((delta < (int) (rstrm->fbtbc)) &&
- (newpos <= rstrm->in_boundry) &&
- (newpos >= rstrm->in_base))
- {
- rstrm->in_finger = newpos;
- rstrm->fbtbc -= delta;
- return TRUE;
- }
- break;
-
- default:
- break;
- }
- return FALSE;
-}
-
-static int32_t *
-xdrrec_inline (XDR *xdrs, u_int len)
-{
- RECSTREAM *rstrm = (RECSTREAM *) xdrs->x_private;
- int32_t *buf = NULL;
-
- switch (xdrs->x_op)
- {
-
- case XDR_ENCODE:
- if ((rstrm->out_finger + len) <= rstrm->out_boundry)
- {
- buf = (int32_t *) rstrm->out_finger;
- rstrm->out_finger += len;
- }
- break;
-
- case XDR_DECODE:
- if ((len <= rstrm->fbtbc) &&
- ((rstrm->in_finger + len) <= rstrm->in_boundry))
- {
- buf = (int32_t *) rstrm->in_finger;
- rstrm->fbtbc -= len;
- rstrm->in_finger += len;
- }
- break;
-
- default:
- break;
- }
- return buf;
-}
-
-static void
-xdrrec_destroy (XDR *xdrs)
-{
- RECSTREAM *rstrm = (RECSTREAM *) xdrs->x_private;
-
- mem_free (rstrm->the_buffer,
- rstrm->sendsize + rstrm->recvsize + BYTES_PER_XDR_UNIT);
- mem_free ((caddr_t) rstrm, sizeof (RECSTREAM));
-}
-
-/*
- * Exported routines to manage xdr records
- */
-
-/*
- * Before reading (deserializing from the stream, one should always call
- * this procedure to guarantee proper record alignment.
- */
-bool_t
-xdrrec_skiprecord (XDR *xdrs)
-{
- RECSTREAM *rstrm = (RECSTREAM *) xdrs->x_private;
-
- while (rstrm->fbtbc > 0 || (!rstrm->last_frag))
- {
- if (!skip_input_bytes (rstrm, rstrm->fbtbc))
- return FALSE;
- rstrm->fbtbc = 0;
- if ((!rstrm->last_frag) && (!set_input_fragment (rstrm)))
- return FALSE;
- }
- rstrm->last_frag = FALSE;
- return TRUE;
-}
-libc_hidden_def(xdrrec_skiprecord)
-
-/*
- * Lookahead function.
- * Returns TRUE iff there is no more input in the buffer
- * after consuming the rest of the current record.
- */
-bool_t
-xdrrec_eof (XDR *xdrs)
-{
- RECSTREAM *rstrm = (RECSTREAM *) xdrs->x_private;
-
- while (rstrm->fbtbc > 0 || (!rstrm->last_frag))
- {
- if (!skip_input_bytes (rstrm, rstrm->fbtbc))
- return TRUE;
- rstrm->fbtbc = 0;
- if ((!rstrm->last_frag) && (!set_input_fragment (rstrm)))
- return TRUE;
- }
- if (rstrm->in_finger == rstrm->in_boundry)
- return TRUE;
- return FALSE;
-}
-libc_hidden_def(xdrrec_eof)
-
-/*
- * The client must tell the package when an end-of-record has occurred.
- * The second parameter tells whether the record should be flushed to the
- * (output) tcp stream. (This lets the package support batched or
- * pipelined procedure calls.) TRUE => immediate flush to tcp connection.
- */
-bool_t
-xdrrec_endofrecord (XDR *xdrs, bool_t sendnow)
-{
- RECSTREAM *rstrm = (RECSTREAM *) xdrs->x_private;
- u_long len; /* fragment length */
-
- if (sendnow || rstrm->frag_sent
- || rstrm->out_finger + BYTES_PER_XDR_UNIT >= rstrm->out_boundry)
- {
- rstrm->frag_sent = FALSE;
- return flush_out (rstrm, TRUE);
- }
- len = (rstrm->out_finger - (char *) rstrm->frag_header
- - BYTES_PER_XDR_UNIT);
- *rstrm->frag_header = htonl ((u_long) len | LAST_FRAG);
- rstrm->frag_header = (u_int32_t *) rstrm->out_finger;
- rstrm->out_finger += BYTES_PER_XDR_UNIT;
- return TRUE;
-}
-libc_hidden_def(xdrrec_endofrecord)
-
-/*
- * Internal useful routines
- */
-static bool_t
-internal_function
-flush_out (RECSTREAM *rstrm, bool_t eor)
-{
- u_long eormask = (eor == TRUE) ? LAST_FRAG : 0;
- u_long len = (rstrm->out_finger - (char *) rstrm->frag_header
- - BYTES_PER_XDR_UNIT);
-
- *rstrm->frag_header = htonl (len | eormask);
- len = rstrm->out_finger - rstrm->out_base;
- if ((*(rstrm->writeit)) (rstrm->tcp_handle, rstrm->out_base, (int) len)
- != (int) len)
- return FALSE;
- rstrm->frag_header = (u_int32_t *) rstrm->out_base;
- rstrm->out_finger = (caddr_t) rstrm->out_base + BYTES_PER_XDR_UNIT;
- return TRUE;
-}
-
-static bool_t /* knows nothing about records! Only about input buffers */
-fill_input_buf (RECSTREAM *rstrm)
-{
- caddr_t where;
- size_t i;
- int len;
-
- where = rstrm->in_base;
- i = (size_t) rstrm->in_boundry % BYTES_PER_XDR_UNIT;
- where += i;
- len = rstrm->in_size - i;
- if ((len = (*(rstrm->readit)) (rstrm->tcp_handle, where, len)) == -1)
- return FALSE;
- rstrm->in_finger = where;
- where += len;
- rstrm->in_boundry = where;
- return TRUE;
-}
-
-static bool_t /* knows nothing about records! Only about input buffers */
-internal_function
-get_input_bytes (RECSTREAM *rstrm, caddr_t addr, int len)
-{
- int current;
-
- while (len > 0)
- {
- current = rstrm->in_boundry - rstrm->in_finger;
- if (current == 0)
- {
- if (!fill_input_buf (rstrm))
- return FALSE;
- continue;
- }
- current = (len < current) ? len : current;
- memcpy (addr, rstrm->in_finger, current);
- rstrm->in_finger += current;
- addr += current;
- len -= current;
- }
- return TRUE;
-}
-
-static bool_t /* next two bytes of the input stream are treated as a header */
-internal_function
-set_input_fragment (RECSTREAM *rstrm)
-{
- uint32_t header;
-
- if (! get_input_bytes (rstrm, (caddr_t)&header, BYTES_PER_XDR_UNIT))
- return FALSE;
- header = ntohl (header);
- rstrm->last_frag = ((header & LAST_FRAG) == 0) ? FALSE : TRUE;
- /*
- * Sanity check. Try not to accept wildly incorrect fragment
- * sizes. Unfortunately, only a size of zero can be identified as
- * 'wildely incorrect', and this only, if it is not the last
- * fragment of a message. Ridiculously large fragment sizes may look
- * wrong, but we don't have any way to be certain that they aren't
- * what the client actually intended to send us. Many existing RPC
- * implementations may sent a fragment of size zero as the last
- * fragment of a message.
- */
- if (header == 0)
- return FALSE;
- rstrm->fbtbc = header & ~LAST_FRAG;
- return TRUE;
-}
-
-static bool_t /* consumes input bytes; knows nothing about records! */
-internal_function
-skip_input_bytes (RECSTREAM *rstrm, long cnt)
-{
- int current;
-
- while (cnt > 0)
- {
- current = rstrm->in_boundry - rstrm->in_finger;
- if (current == 0)
- {
- if (!fill_input_buf (rstrm))
- return FALSE;
- continue;
- }
- current = (cnt < current) ? cnt : current;
- rstrm->in_finger += current;
- cnt -= current;
- }
- return TRUE;
-}
-
-static u_int
-internal_function
-fix_buf_size (u_int s)
-{
- if (s < 100)
- s = 4000;
- return RNDUP (s);
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-22 23:48:45 +0000